/*
 * @(#)ResultSet.java	1.26 00/02/02
 *
 * Copyright 1996-2000 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */

package java.sql;

import java.math.BigDecimal;
import java.util.Calendar;

/**
 * A table of data representing a database result set, which
 * is usually generated by executing a statement that queries the database. 
 * 
 * <P>A <code>ResultSet</code> object  maintains a cursor pointing
 * to its current row of data.  Initially the cursor is positioned 
 * before the first row. The <code>next</code> method moves the 
 * cursor to the next row, and because it returns <code>false</code>
 * when there are no more rows in the <code>ResultSet</code> object,
 * it can be used in a <code>while</code> loop to iterate through 
 * the result set.
 * <P>
 * A default <code>ResultSet</code> object is not updatable and
 * has a cursor that moves forward only.  Thus, it is possible to
 * iterate through it only once and only from the first row to the
 * last row.  New methods in the JDBC 2.0 API make it possible to
 * produce <code>ResultSet</code> objects that are scrollable and/or
 * updatable.  The following code fragment, in which <code>con</code>
 * is a valid <code>Connection</code> object, illustrates how to make 
 * a result set that is scrollable and insensitive to updates by others, and 
 * that is updatable. See <code>ResultSet</code> fields for other
 * options.
 * <PRE>
 *
 *       Statement stmt = con.createStatement(
 *                                      ResultSet.TYPE_SCROLL_INSENSITIVE,
 *                                      ResultSet.CONCUR_UPDATABLE);
 *       ResultSet rs = stmt.executeQuery("SELECT a, b FROM TABLE2");
 *       // rs will be scrollable, will not show changes made by others,
 *       // and will be updatable
 *
 * </PRE>
 * The <code>ResultSet</code> interface provides 
 * <code>getXXX</code> methods for retrieving column values from
 * the current row.
 * Values can be retrieved using either the index number of the
 * column or the name of the column.  In general, using the 
 * column index will be more efficient.  Columns are numbered from 1.
 * For maximum portability, result set columns within each row should be
 * read in left-to-right order, and each column should be read only once.
 *
 * <P>For the <code>getXXX</code> methods, a JDBC driver attempts
 * to convert the underlying data to the Java type specified in the
 * <code>XXX</code> part of the <code>getXXX</code> method and
 * returns a suitable Java value.  The JDBC specification 
 * has a table showing the allowable mappings
 * from SQL types to Java types with the <code>ResultSet.getXXX</code>
 * methods.
 * <P>
 * <P>Column names used as input to <code>getXXX</code> methods are case
 * insensitive.  When a <code>getXXX</code> method is called  with
 * a column name and several columns have the same name, 
 * the value of the first matching column will be returned. 
 * The column name option is
 * designed to be used when column names are used in the SQL
 * query that generated the result set.
 * For columns that are NOT explicitly named in the query, it
 * is best to use column numbers. If column names are used, there is
 * no way for the programmer to guarantee that they actually refer to
 * the intended columns.
 * <P>
 * A set of <code>updateXXX</code> methods were added to this interface
 * in the JDBC 2.0 API (Java<sup><font size=-2>TM</font></sup> 2 SDK,
 * Standard Edition, version 1.2). The comments regarding parameters
 * to the <code>getXXX</code> methods also apply to parameters to the
 * <code>updateXXX</code> methods.
 *<P>
 * The <code>updateXXX</code> methods may be used in two ways:
 * <ol>
 * <LI>to update a column value in the current row.  In a scrollable
 *     <code>ResultSet</code> object, the cursor can be moved backwards
 *     and forwards, to an absolute position, or to a position
 *     relative to the current row.
 *     The following code fragment updates the <code>NAME</code> column
 *     in the fifth row of the <code>ResultSet</code> object
 *     <code>rs</code> and then uses the method <code>updateRow</code>
 *     to update the data source table from which <code>rs</code> was derived.
 * <PRE>
 *
 *       rs.absolute(5); // moves the cursor to the fifth row of rs
 *       rs.updateString("NAME", "AINSWORTH"); // updates the 
 *          // <code>NAME</code> column of row 5 to be <code>AINSWORTH</code>
 *       rs.updateRow(); // updates the row in the data source
 *
 * </PRE>
 * <LI>to insert column values into the insert row.  An updatable
 *     <code>ResultSet</code> object has a special row associated with
 *     it that serves as a staging area for building a row to be inserted.
 *     The following code fragment moves the cursor to the insert row, builds
 *     a three-column row, and inserts it into <code>rs</code> and into
 *     the data source table using the method <code>insertRow</code>.
 * <PRE>
 *
 *       rs.moveToInsertRow(); // moves cursor to the insert row
 *       rs.updateString(1, "AINSWORTH"); // updates the 
 *          // first column of the insert row to be <code>AINSWORTH</code>
 *       rs.updateInt(2,35); // updates the second column to be <code>35</code>
 *       rs.updateBoolean(3, true); // updates the third row to <code>true</code>
 *       rs.insertRow();
 *       rs.moveToCurrentRow();
 *
 * </PRE>
 * </ol>
 * <P>A <code>ResultSet</code> object is automatically closed when the
 * <code>Statement</code> object that
 * generated it is closed, re-executed, or used
 * to retrieve the next result from a sequence of multiple results.
 * 
 * <P>The number, types and properties of a <code>ResultSet</code>
 * object's columns are provided by the <code>ResulSetMetaData</code>
 * object returned by the <code>ResultSet.getMetaData</code> method.
 *
 * @see Statement#executeQuery 
 * @see Statement#getResultSet 
 * @see ResultSetMetaData 
 */

public interface ResultSet {

    /**
	 * Moves the cursor down one row from its current position.
     * A <code>ResultSet</code> cursor is initially positioned
	 * before the first row; the first call to the method
	 * <code>next</code> makes the first row the current row; the
     * second call makes the second row the current row, and so on. 
     *
     * <P>If an input stream is open for the current row, a call
	 * to the method <code>next</code> will
     * implicitly close it. A <code>ResultSet</code> object's
	 * warning chain is cleared when a new row is read.
     *
     * @return <code>true</code> if the new current row is valid; 
	 * <code>false</code> if there are no more rows 
     * @exception SQLException if a database access error occurs
     */
    boolean next() throws SQLException;


    /**
	 * Releases this <code>ResultSet</code> object's database and
	 * JDBC resources immediately instead of waiting for
     * this to happen when it is automatically closed.
     *
     * <P><B>Note:</B> A <code>ResultSet</code> object
	 * is automatically closed by the
     * <code>Statement</code> object that generated it when
	 * that <code>Statement</code> object is closed,
     * re-executed, or is used to retrieve the next result from a
     * sequence of multiple results. A <code>ResultSet</code> object
	 * is also automatically closed when it is garbage collected.  
     *
     * @exception SQLException if a database access error occurs
     */
    void close() throws SQLException;

    /**
     * Reports whether
     * the last column read had a value of SQL <code>NULL</code>.
     * Note that you must first call one of the <code>getXXX</code> methods
	 * on a column to try to read its value and then call
	 * the method <code>wasNull</code> to see if the value read was
     * SQL <code>NULL</code>.
     *
     * @return <code>true</code> if the last column value read was SQL
	 *         <code>NULL</code> and <code>false</code> otherwise
     * @exception SQLException if a database access error occurs
     */
    boolean wasNull() throws SQLException;
    
    //======================================================================
    // Methods for accessing results by column index
    //======================================================================

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>String</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    String getString(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>boolean</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>false</code>
     * @exception SQLException if a database access error occurs
     */
    boolean getBoolean(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>byte</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    byte getByte(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>short</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    short getShort(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * an <code>int</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    int getInt(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>long</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    long getLong(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>float</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    float getFloat(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>double</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    double getDouble(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.BigDecimal</code> in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param scale the number of digits to the right of the decimal point
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     * @deprecated
     */
    BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>byte</code> array in the Java programming language.
     * The bytes represent the raw values returned by the driver.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    byte[] getBytes(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Date</code> object in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Date getDate(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Time</code> object in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Time getTime(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Timestamp</code> object in the Java programming language.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Timestamp getTimestamp(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a stream of ASCII characters. The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large <char>LONGVARCHAR</char> values.
	 * The JDBC driver will
     * do any necessary conversion from the database format into ASCII.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream.  Also, a
     * stream may return <code>0</code> when the method
	 * <code>InputStream.available</code>
	 * is called whether there is data available or not.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return a Java input stream that delivers the database column value
     * as a stream of one-byte ASCII characters;
	 * if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.io.InputStream getAsciiStream(int columnIndex) throws SQLException;

    /**
	 * Gets the value of a column in the current row as a stream of
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * as a stream of Unicode characters.
	 * The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large<code>LONGVARCHAR</code>values.  The JDBC driver will
     * do any necessary conversion from the database format into Unicode.
	 * The byte format of the Unicode stream must be Java UTF-8,
	 * as specified in the Java virtual machine specification.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream.  Also, a
     * stream may return <code>0</code> when the method 
	 * <code>InputStream.available</code>
     * is called whether there is data available or not.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return a Java input stream that delivers the database column value
     * as a stream in Java UTF-8 byte format;
	 * if the value is SQL <code>NULL</code>, the value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     * @deprecated use <code>getCharacterStream</code> in place of 
	 *              <code>getUnicodeStream</code>
     */
    java.io.InputStream getUnicodeStream(int columnIndex) throws SQLException;

    /**
	 * Gets the value of a column in the current row as a stream of
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a binary stream of
	 * uninterpreted bytes. The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large <code>LONGVARBINARY</code> values.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream.  Also, a
     * stream may return <code>0</code> when the method 
	 * <code>InputStream.available</code>
     * is called whether there is data available or not.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return a Java input stream that delivers the database column value
     * as a stream of uninterpreted bytes;
	 * if the value is SQL <code>NULL</code>, the value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.io.InputStream getBinaryStream(int columnIndex)
        throws SQLException;


    //======================================================================
    // Methods for accessing results by column name
    //======================================================================

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>String</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    String getString(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>boolean</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>false</code>
     * @exception SQLException if a database access error occurs
     */
    boolean getBoolean(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>byte</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    byte getByte(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>short</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    short getShort(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * an <code>int</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    int getInt(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>long</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    long getLong(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>float</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    float getFloat(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>double</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>0</code>
     * @exception SQLException if a database access error occurs
     */
    double getDouble(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.math.BigDecimal</code> in the Java programming language.
     *
     * @param columnName the SQL name of the column
     * @param scale the number of digits to the right of the decimal point
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     * @deprecated
     */
    BigDecimal getBigDecimal(String columnName, int scale) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>byte</code> array in the Java programming language.
     * The bytes represent the raw values returned by the driver.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    byte[] getBytes(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Date</code> object in the Java programming language.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Date getDate(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row  
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Time</code> object in the Java programming language.
     *
     * @param columnName the SQL name of the column
     * @return the column value; 
	 * if the value is SQL <code>NULL</code>,
     * the value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Time getTime(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as
	 * a <code>java.sql.Timestamp</code> object.
     *
     * @param columnName the SQL name of the column
	 * @return the column value; if the value is SQL <code>NULL</code>, the
	 * value returned is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.sql.Timestamp getTimestamp(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a stream of
	 * ASCII characters. The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large <code>LONGVARCHAR</code> values.
	 * The JDBC driver will
     * do any necessary conversion from the database format into ASCII.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream. Also, a
     * stream may return <code>0</code> when the method <code>available</code>
     * is called whether there is data available or not.
     *
     * @param columnName the SQL name of the column
     * @return a Java input stream that delivers the database column value
     * as a stream of one-byte ASCII characters.
	 * If the value is SQL <code>NULL</code>,
     * the value returned is <code>null</code>.
     * @exception SQLException if a database access error occurs
     */
    java.io.InputStream getAsciiStream(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a stream of
	 * Unicode characters. The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large <code>LONGVARCHAR</code> values.
	 * The JDBC driver will
     * do any necessary conversion from the database format into Unicode.
	 * The byte format of the Unicode stream must be Java UTF-8,
	 * as defined in the Java virtual machine specification.
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream. Also, a
     * stream may return <code>0</code> when the method <code>available</code>
     * is called whether there is data available or not.
     *
     * @param columnName the SQL name of the column
     * @return a Java input stream that delivers the database column value
     * as a stream of two-byte Unicode characters.  
	 * If the value is SQL <code>NULL</code>,
     * the value returned is <code>null</code>.
     * @exception SQLException if a database access error occurs
     * @deprecated
     */
    java.io.InputStream getUnicodeStream(String columnName) throws SQLException;

    /**
     * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a stream of uninterpreted
	 * <code>byte</code>s.
	 * The value can then be read in chunks from the
	 * stream. This method is particularly
     * suitable for retrieving large <code>LONGVARBINARY</code>
	 * values. 
     *
     * <P><B>Note:</B> All the data in the returned stream must be
     * read prior to getting the value of any other column. The next
     * call to a <code>getXXX</code> method implicitly closes the stream. Also, a
     * stream may return <code>0</code> when the method <code>available</code>
     * is called whether there is data available or not.
	 *
     * @param columnName the SQL name of the column
     * @return a Java input stream that delivers the database column value
     * as a stream of uninterpreted bytes; 
	 * if the value is SQL <code>NULL</code>, the result is <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    java.io.InputStream getBinaryStream(String columnName)
        throws SQLException;


    //=====================================================================
    // Advanced features:
    //=====================================================================

    /**
     * Returns the first warning reported by calls on this 
	 * <code>ResultSet</code> object.
     * Subsequent warnings on this <code>ResultSet</code> object
	 * will be chained to the <code>SQLWarning</code> object that 
	 * this method returns.
     *
     * <P>The warning chain is automatically cleared each time a new
     * row is read.
     *
     * <P><B>Note:</B> This warning chain only covers warnings caused
     * by <code>ResultSet</code> methods.  Any warning caused by
	 * <code>Statement</code> methods
     * (such as reading OUT parameters) will be chained on the
     * <code>Statement</code> object. 
     *
     * @return the first <code>SQLWarning</code> object reported or <code>null</code>
     * @exception SQLException if a database access error occurs
     */
    SQLWarning getWarnings() throws SQLException;

    /**
	 * Clears all warnings reported on this <code>ResultSet</code> object.
     * After this method is called, the method <code>getWarnings</code>
	 * returns <code>null</code> until a new warning is
     * reported for this <code>ResultSet</code> object.  
     *
     * @exception SQLException if a database access error occurs
     */
    void clearWarnings() throws SQLException;

    /**
     * Gets the name of the SQL cursor used by this <code>ResultSet</code>
	 * object.
     *
     * <P>In SQL, a result table is retrieved through a cursor that is
     * named. The current row of a result set can be updated or deleted
     * using a positioned update/delete statement that references the
     * cursor name. To insure that the cursor has the proper isolation
     * level to support update, the cursor's <code>select</code> statement should be 
     * of the form 'select for update'. If the 'for update' clause is 
     * omitted, the positioned updates may fail.
     * 
     * <P>The JDBC API supports this SQL feature by providing the name of the
     * SQL cursor used by a <code>ResultSet</code> object.
	 * The current row of a <code>ResultSet</code> object
     * is also the current row of this SQL cursor.
     *
     * <P><B>Note:</B> If positioned update is not supported, a
     * <code>SQLException</code> is thrown.
     *
     * @return the SQL name for this <code>ResultSet</code> object's cursor
     * @exception SQLException if a database access error occurs
     */
    String getCursorName() throws SQLException;

    /**
     * Retrieves the  number, types and properties of
	 * this <code>ResultSet</code> object's columns.
     *
     * @return the description of this <code>ResultSet</code> object's columns
     * @exception SQLException if a database access error occurs
     */
    ResultSetMetaData getMetaData() throws SQLException;

    /**
     * <p>Gets the value of the designated column in the current row 
	 * of this <code>ResultSet</code> object as 
	 * an <code>Object</code> in the Java programming language.
     *
     * <p>This method will return the value of the given column as a
     * Java object.  The type of the Java object will be the default
     * Java object type corresponding to the column's SQL type,
     * following the mapping for built-in types specified in the JDBC 
     * specification.
     *
     * <p>This method may also be used to read datatabase-specific
     * abstract data types.
     *
     * In the JDBC 2.0 API, the behavior of method
	 * <code>getObject</code> is extended to materialize  
     * data of SQL user-defined types.  When a column contains
     * a structured or distinct value, the behavior of this method is as 
     * if it were a call to: <code>getObject(columnIndex, 
     * this.getStatement().getConnection().getTypeMap())</code>.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return a <code>java.lang.Object</code> holding the column value  
     * @exception SQLException if a database access error occurs
     */
    Object getObject(int columnIndex) throws SQLException;

    /**
     * <p>Gets the value of the designated column in the current row 
	 * of this <code>ResultSet</code> object as 
	 * an <code>Object</code> in the Java programming language.
     *
     * <p>This method will return the value of the given column as a
     * Java object.  The type of the Java object will be the default
     * Java object type corresponding to the column's SQL type,
     * following the mapping for built-in types specified in the JDBC 
     * specification.
     *
     * <p>This method may also be used to read datatabase-specific
     * abstract data types.
     *
     * In the JDBC 2.0 API, the behavior of the method
	 * <code>getObject</code> is extended to materialize  
     * data of SQL user-defined types.  When a column contains
     * a structured or distinct value, the behavior of this method is as 
     * if it were a call to: <code>getObject(columnIndex, 
     * this.getStatement().getConnection().getTypeMap())</code>.
     *
     * @param columnName the SQL name of the column
     * @return a <code>java.lang.Object</code> holding the column value  
     * @exception SQLException if a database access error occurs
     */
    Object getObject(String columnName) throws SQLException;

    //----------------------------------------------------------------

    /**
     * Maps the given <code>ResultSet</code> column name to its
	 * <code>ResultSet</code> column index.
     *
     * @param columnName the name of the column
     * @return the column index of the given column name
     * @exception SQLException if a database access error occurs
     */
    int findColumn(String columnName) throws SQLException;


    //--------------------------JDBC 2.0-----------------------------------

    //---------------------------------------------------------------------
    // Getters and Setters
    //---------------------------------------------------------------------

    /**
     * Gets the value of the designated column in the current row 
	 * of this <code>ResultSet</code> object as a
	 * <code>java.io.Reader</code> object.
	 * @return a <code>java.io.Reader</code> object that contains the column
	 * value; if the value is SQL <code>NULL</code>, the value returned is
	 * <code>null</code> in the Java programming language.
     * @param columnIndex the first column is 1, the second is 2, ...
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.io.Reader getCharacterStream(int columnIndex) throws SQLException;

    /**
     * Gets the value of the designated column in the current row 
	 * of this <code>ResultSet</code> object as a
	 * <code>java.io.Reader</code> object.
	 *
	 * @return a <code>java.io.Reader</code> object that contains the column
	 * value; if the value is SQL <code>NULL</code>, the value returned is
	 * <code>null</code> in the Java programming language.
     * @param columnName the name of the column
	 * @return the value in the specified column as a <code>java.io.Reader</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.io.Reader getCharacterStream(String columnName) throws SQLException;

    /**
	 * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a
	 * <code>java.math.BigDecimal</code> with full precision.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return the column value (full precision);
	 * if the value is SQL <code>NULL</code>, the value returned is
	 * <code>null</code> in the Java programming language.
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    BigDecimal getBigDecimal(int columnIndex) throws SQLException;

    /**
	 * Gets the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a
	 * <code>java.math.BigDecimal</code> with full precision.
     *
     * @param columnName the column name
     * @return the column value (full precision);
	 * if the value is SQL <code>NULL</code>, the value returned is
	 * <code>null</code> in the Java programming language.
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     *
     */
    BigDecimal getBigDecimal(String columnName) throws SQLException;

    //---------------------------------------------------------------------
    // Traversal/Positioning
    //---------------------------------------------------------------------

    /**
     * Indicates whether the cursor is before the first row in 
	 * this <code>ResultSet</code> object.
     *
     * @return <code>true</code> if the cursor is before the first row;
	 * <code>false</code> if the cursor is at any other position or the
	 * result set contains no rows
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean isBeforeFirst() throws SQLException;
      
    /**
     * Indicates whether the cursor is after the last row in 
	 * this <code>ResultSet</code> object.
     *
     * @return <code>true</code> if the cursor is after the last row;
	 * <code>false</code> if the cursor is at any other position or the
	 * result set contains no rows
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean isAfterLast() throws SQLException;
 
    /**
     * Indicates whether the cursor is on the first row of
	 * this <code>ResultSet</code> object.
     *
     * @return <code>true</code> if the cursor is on the first row;
	 * <code>false</code> otherwise   
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean isFirst() throws SQLException;
 
    /**
     * Indicates whether the cursor is on the last row of 
	 * this <code>ResultSet</code> object.
     * Note: Calling the method <code>isLast</code> may be expensive
	 * because the JDBC driver
     * might need to fetch ahead one row in order to determine 
     * whether the current row is the last row in the result set.
     *
     * @return <code>true</code> if the cursor is on the last row;
	 * <code>false</code> otherwise   
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean isLast() throws SQLException;

    /**
     * Moves the cursor to the front of
	 * this <code>ResultSet</code> object, just before the
     * first row. This method has no effect if the result set contains no rows.
     *
     * @exception SQLException if a database access error
	 * occurs or the result set type is <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void beforeFirst() throws SQLException;

    /**
     * Moves the cursor to the end of
	 * this <code>ResultSet</code> object, just after the
     * last row. This method has no effect if the result set contains no rows.
     * @exception SQLException if a database access error
	 * occurs or the result set type is <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
	 */
    void afterLast() throws SQLException;

    /**
     * Moves the cursor to the first row in
	 * this <code>ResultSet</code> object.
     *
     * @return <code>true</code> if the cursor is on a valid row;
	 * <code>false</code> if there are no rows in the result set
     * @exception SQLException if a database access error
	 * occurs or the result set type is <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean first() throws SQLException;

    /**
     * Moves the cursor to the last row in
	 * this <code>ResultSet</code> object.
     *
     * @return <code>true</code> if the cursor is on a valid row;
	 * <code>false</code> if there are no rows in the result set
     * @exception SQLException if a database access error
	 * occurs or the result set type is <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean last() throws SQLException;

    /**
     * Retrieves the current row number.  The first row is number 1, the
     * second number 2, and so on.  
     *
     * @return the current row number; <code>0</code> if there is no current row
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int getRow() throws SQLException;

    /**
     * Moves the cursor to the given row number in
	 * this <code>ResultSet</code> object.
     *
     * <p>If the row number is positive, the cursor moves to 
	 * the given row number with respect to the
     * beginning of the result set.  The first row is row 1, the second
     * is row 2, and so on. 
     *
     * <p>If the given row number is negative, the cursor moves to
	 * an absolute row position with respect to
     * the end of the result set.  For example, calling the method
	 * <code>absolute(-1)</code> positions the 
     * cursor on the last row; calling the method <code>absolute(-2)</code>
	 * moves the cursor to the next-to-last row, and so on.
     *
     * <p>An attempt to position the cursor beyond the first/last row in
     * the result set leaves the cursor before the first row or after 
	 * the last row.
     *
     * <p><B>Note:</B> Calling <code>absolute(1)</code> is the same
	 * as calling <code>first()</code>. Calling <code>absolute(-1)</code> 
     * is the same as calling <code>last()</code>.
     *
     * @return <code>true</code> if the cursor is on the result set;
	 * <code>false</code> otherwise
     * @exception SQLException if a database access error
	 * occurs, the row is <code>0</code>, or the result set type is 
	 * <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean absolute( int row ) throws SQLException;

    /**
     * Moves the cursor a relative number of rows, either positive or negative.
     * Attempting to move beyond the first/last row in the
     * result set positions the cursor before/after the
     * the first/last row. Calling <code>relative(0)</code> is valid, but does
     * not change the cursor position.
     *
     * <p>Note: Calling the method <code>relative(1)</code>
	 * is different from calling the method <code>next()</code>
     * because is makes sense to call <code>next()</code> when there
	 * is no current row,
     * for example, when the cursor is positioned before the first row
     * or after the last row of the result set.
     *
     * @return <code>true</code> if the cursor is on a row;
	 * <code>false</code> otherwise
     * @exception SQLException if a database access error occurs, 
	 * there is no current row, or the result set type is 
	 * <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean relative( int rows ) throws SQLException;

    /**
     * Moves the cursor to the previous row in this
	 * <code>ResultSet</code> object.
     *
     * <p><B>Note:</B> Calling the method <code>previous()</code> is not the same as
	 * calling the method <code>relative(-1)</code> because it
     * makes sense to call</code>previous()</code> when there is no current row.
     *
     * @return <code>true</code> if the cursor is on a valid row; 
	 * <code>false</code> if it is off the result set
     * @exception SQLException if a database access error
	 * occurs or the result set type is <code>TYPE_FORWARD_ONLY</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean previous() throws SQLException;

    //---------------------------------------------------------------------
    // Properties
    //---------------------------------------------------------------------

    /**
     * The constant indicating that the rows in a result set will be 
	 * processed in a forward direction; first-to-last.
	 * This constant is used by the method <code>setFetchDirection</code>
	 * as a hint to the driver, which the driver may ignore.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int FETCH_FORWARD = 1000;

    /**
     * The constant indicating that the rows in a result set will be 
     * processed in a reverse direction; last-to-first.
	 * This constant is used by the method <code>setFetchDirection</code>
	 * as a hint to the driver, which the driver may ignore.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int FETCH_REVERSE = 1001;

    /**
     * The constant indicating that the order in which rows in a 
	 * result set will be processed is unknown.
	 * This constant is used by the method <code>setFetchDirection</code>
	 * as a hint to the driver, which the driver may ignore.
     */
    int FETCH_UNKNOWN = 1002;

    /**
     * Gives a hint as to the direction in which the rows in this
	 * <code>ResultSet</code> object will be processed. 
	 * The initial value is determined by the 
	 * <code>Statement</code> object
     * that produced this <code>ResultSet</code> object.
	 * The fetch direction may be changed at any time.
     *
     * @exception SQLException if a database access error occurs or
     * the result set type is <code>TYPE_FORWARD_ONLY</code> and the fetch
	 * direction is not <code>FETCH_FORWARD</code>
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
	 * @see Statement#setFetchDirection
     */
    void setFetchDirection(int direction) throws SQLException;

    /**
     * Returns the fetch direction for this 
	 * <code>ResultSet</code> object.
     *
	 * @return the current fetch direction for this <code>ResultSet</code> object 
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int getFetchDirection() throws SQLException;

    /**
     * Gives the JDBC driver a hint as to the number of rows that should 
     * be fetched from the database when more rows are needed for this 
	 * <code>ResultSet</code> object.
     * If the fetch size specified is zero, the JDBC driver 
     * ignores the value and is free to make its own best guess as to what
     * the fetch size should be.  The default value is set by the 
	 * <code>Statement</code> object
     * that created the result set.  The fetch size may be changed at any time.
     *
     * @param rows the number of rows to fetch
     * @exception SQLException if a database access error occurs or the
     * condition <code>0 <= rows <= this.getMaxRows()</code> is not satisfied
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void setFetchSize(int rows) throws SQLException;

    /**
     *
     * Returns the fetch size for this 
	 * <code>ResultSet</code> object.
     *
	 * @return the current fetch size for this <code>ResultSet</code> object
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int getFetchSize() throws SQLException;

    /**
	 * The constant indicating the type for a <code>ResultSet</code> object
	 * whose cursor may move only forward.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int TYPE_FORWARD_ONLY = 1003;

    /**
	 * The constant indicating the type for a <code>ResultSet</code> object
	 * that is scrollable but generally not sensitive to changes made by others.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
	 * 
     */
    int TYPE_SCROLL_INSENSITIVE = 1004;

    /**
	 * The constant indicating the type for a <code>ResultSet</code> object
	 * that is scrollable and generally sensitive to changes made by others.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int TYPE_SCROLL_SENSITIVE = 1005;

    /**
     * Returns the type of this <code>ResultSet</code> object.  
	 * The type is determined by the <code>Statement</code> object
	 * that created the result set.
     *
     * @return <code>TYPE_FORWARD_ONLY</code>,
	 * <code>TYPE_SCROLL_INSENSITIVE</code>,
	 * or <code>TYPE_SCROLL_SENSITIVE</code>
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int getType() throws SQLException;

    /**
	 * The constant indicating the concurrency mode for a
	 * <code>ResultSet</code> object that may NOT be updated.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     *  
     */
    int CONCUR_READ_ONLY = 1007;

    /**
	 * The constant indicating the concurrency mode for a
	 * <code>ResultSet</code> object that may be updated.
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     * 
     */
    int CONCUR_UPDATABLE = 1008;

    /**
     * Returns the concurrency mode of this <code>ResultSet</code> object.
	 * The concurrency used is determined by the 
	 * <code>Statement</code> object that created the result set.
     *
     * @return the concurrency type, either <code>CONCUR_READ_ONLY</code>
	 * or <code>CONCUR_UPDATABLE</code>
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    int getConcurrency() throws SQLException;

    //---------------------------------------------------------------------
    // Updates
    //---------------------------------------------------------------------

    /**
     * Indicates whether the current row has been updated.  The value returned 
     * depends on whether or not the result set can detect updates.
     *
     * @return <code>true</code> if the row has been visibly updated
	 * by the owner or another, and updates are detected
     * @exception SQLException if a database access error occurs
     * 
     * @see DatabaseMetaData#updatesAreDetected
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean rowUpdated() throws SQLException;

    /**
     * Indicates whether the current row has had an insertion.
	 * The value returned depends on whether or not this
	 * <code>ResultSet</code> object can detect visible inserts.
     *
     * @return <code>true</code> if a row has had an insertion
	 * and insertions are detected; <code>false</code> otherwise
     * @exception SQLException if a database access error occurs
     * 
     * @see DatabaseMetaData#insertsAreDetected
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean rowInserted() throws SQLException;
   
    /**
     * Indicates whether a row has been deleted.  A deleted row may leave
     * a visible "hole" in a result set.  This method can be used to
     * detect holes in a result set.  The value returned depends on whether 
     * or not this <code>ResultSet</code> object can detect deletions.
     *
     * @return <code>true</code> if a row was deleted and deletions are detected;
	 * <code>false</code> otherwise
     * @exception SQLException if a database access error occurs
     * 
     * @see DatabaseMetaData#deletesAreDetected
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    boolean rowDeleted() throws SQLException;

    /**
     * Gives a nullable column a null value.
     * 
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code>
	 * or <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateNull(int columnIndex) throws SQLException;  

    /**
     * Updates the designated column with a <code>boolean</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBoolean(int columnIndex, boolean x) throws SQLException;

    /**
     * Updates the designated column with a <code>byte</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateByte(int columnIndex, byte x) throws SQLException;

    /**
     * Updates the designated column with a <code>short</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateShort(int columnIndex, short x) throws SQLException;

    /**
     * Updates the designated column with an <code>int</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateInt(int columnIndex, int x) throws SQLException;

    /**
     * Updates the designated column with a <code>long</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateLong(int columnIndex, long x) throws SQLException;

    /**
     * Updates the designated column with a <code>float</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateFloat(int columnIndex, float x) throws SQLException;

    /**
     * Updates the designated column with a <code>double</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateDouble(int columnIndex, double x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.math.BigDecimal</code> 
	 * value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBigDecimal(int columnIndex, BigDecimal x) throws SQLException;

    /**
     * Updates the designated column with a <code>String</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateString(int columnIndex, String x) throws SQLException;

    /**
     * Updates the designated column with a <code>byte</code> array value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBytes(int columnIndex, byte x[]) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Date</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateDate(int columnIndex, java.sql.Date x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Time</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateTime(int columnIndex, java.sql.Time x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Timestamp</code>
	 * value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateTimestamp(int columnIndex, java.sql.Timestamp x)
      throws SQLException;

    /** 
     * Updates the designated column with an ascii stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateAsciiStream(int columnIndex, 
			   java.io.InputStream x, 
			   int length) throws SQLException;

    /** 
     * Updates the designated column with a binary stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value     
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBinaryStream(int columnIndex, 
			    java.io.InputStream x,
			    int length) throws SQLException;

    /**
     * Updates the designated column with a character stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateCharacterStream(int columnIndex,
			     java.io.Reader x,
			     int length) throws SQLException;

    /**
     * Updates the designated column with an <code>Object</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @param scale for <code>java.sql.Types.DECIMA</code>
	 *  or <code>java.sql.Types.NUMERIC</code> types,
     *  this is the number of digits after the decimal point.  For all other
     *  types this value will be ignored.
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateObject(int columnIndex, Object x, int scale)
      throws SQLException;

    /**
     * Updates the designated column with an <code>Object</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateObject(int columnIndex, Object x) throws SQLException;

    /**
     * Updates the designated column with a <code>null</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateNull(String columnName) throws SQLException;  

    /**
     * Updates the designated column with a <code>boolean</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBoolean(String columnName, boolean x) throws SQLException;

    /**
     * Updates the designated column with a <code>byte</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateByte(String columnName, byte x) throws SQLException;

    /**
     * Updates the designated column with a <code>short</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateShort(String columnName, short x) throws SQLException;

    /**
     * Updates the designated column with an <code>int</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateInt(String columnName, int x) throws SQLException;

    /**
     * Updates the designated column with a <code>long</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateLong(String columnName, long x) throws SQLException;

    /**
     * Updates the designated column with a <code>float	</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateFloat(String columnName, float x) throws SQLException;

    /**
     * Updates the designated column with a <code>double</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateDouble(String columnName, double x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.BigDecimal</code>
	 * value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBigDecimal(String columnName, BigDecimal x) throws SQLException;

    /**
     * Updates the designated column with a <code>String</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateString(String columnName, String x) throws SQLException;

    /**
     * Updates the designated column with a <code>boolean</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * JDBC 2.0
     *  
     * Updates a column with a byte array value.
     *
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row, or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or <code>insertRow</code>
     * methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBytes(String columnName, byte x[]) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Date</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateDate(String columnName, java.sql.Date x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Time</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateTime(String columnName, java.sql.Time x) throws SQLException;

    /**
     * Updates the designated column with a <code>java.sql.Timestamp</code>
	 * value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateTimestamp(String columnName, java.sql.Timestamp x)
      throws SQLException;

    /** 
     * Updates the designated column with an ascii stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateAsciiStream(String columnName, 
			   java.io.InputStream x, 
			   int length) throws SQLException;

    /** 
     * Updates the designated column with a binary stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateBinaryStream(String columnName, 
			    java.io.InputStream x,
			    int length) throws SQLException;

    /**
     * Updates the designated column with a character stream value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @param length the length of the stream
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateCharacterStream(String columnName,
			     java.io.Reader reader,
			     int length) throws SQLException;

    /**
     * Updates the designated column with an <code>Object</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @param scale for <code>java.sql.Types.DECIMA</code>
	 *  or <code>java.sql.Types.NUMERIC</code> types,
     *  this is the number of digits after the decimal point.  For all other
     *  types this value will be ignored.
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateObject(String columnName, Object x, int scale)
      throws SQLException;

    /**
     * Updates the designated column with an <code>Object</code> value.
     * The <code>updateXXX</code> methods are used to update column values in the
     * current row or the insert row.  The <code>updateXXX</code> methods do not 
     * update the underlying database; instead the <code>updateRow</code> or
	 * <code>insertRow</code> methods are called to update the database.
     *
     * @param columnName the name of the column
     * @param x the new column value
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateObject(String columnName, Object x) throws SQLException;

    /**
     * Inserts the contents of the insert row into this 
	 * <code>ResultSet</code> objaect and into the database.  
	 * The cursor must be on the insert row when this method is called.
     *
     * @exception SQLException if a database access error occurs,
     * if this method is called when the cursor is not on the insert row,
	 * or if not all of non-nullable columns in
	 * the insert row have been given a value
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void insertRow() throws SQLException;

    /**
     * Updates the underlying database with the new contents of the
     * current row of this <code>ResultSet</code> object.
	 * This method cannot be called when the cursor is on the insert row.
     *
     * @exception SQLException if a database access error occurs or
     * if this method is called when the cursor is on the insert row
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void updateRow() throws SQLException;

    /**
     * Deletes the current row from this <code>ResultSet</code> object 
	 * and from the underlying database.  This method cannot be called when
	 * the cursor is on the insert row.
     *
     * @exception SQLException if a database access error occurs
	 * or if this method is called when the cursor is on the insert row
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void deleteRow() throws SQLException;

    /**
     * Refreshes the current row with its most recent value in 
     * the database.  This method cannot be called when
	 * the cursor is on the insert row.
     *
     * <P>The <code>refreshRow</code> method provides a way for an 
	 * application to 
     * explicitly tell the JDBC driver to refetch a row(s) from the
     * database.  An application may want to call <code>refreshRow</code> when 
     * caching or prefetching is being done by the JDBC driver to
     * fetch the latest value of a row from the database.  The JDBC driver 
     * may actually refresh multiple rows at once if the fetch size is 
     * greater than one.
     * 
     * <P> All values are refetched subject to the transaction isolation 
     * level and cursor sensitivity.  If <code>refreshRow</code> is called after
     * calling an <code>updateXXX</code> method, but before calling
	 * the method <code>updateRow</code>, then the
     * updates made to the row are lost.  Calling the method
	 * <code>refreshRow</code> frequently will likely slow performance.
     *
     * @exception SQLException if a database access error
	 * occurs or if this method is called when the cursor is on the insert row
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void refreshRow() throws SQLException;

    /**
	 * Cancels the updates made to the current row in this
	 * <code>ResultSet</code> object.
     * This method may be called after calling an
     * <code>updateXXX</code> method(s) and before calling
	 * the method <code>updateRow</code> to roll back 
     * the updates made to a row.  If no updates have been made or 
     * <code>updateRow</code> has already been called, this method has no 
     * effect.
     *
     * @exception SQLException if a database access error
	 * occurs or if this method is called when the cursor is on the insert row
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void cancelRowUpdates() throws SQLException;

    /**
     * Moves the cursor to the insert row.  The current cursor position is 
     * remembered while the cursor is positioned on the insert row.
     *
     * The insert row is a special row associated with an updatable
     * result set.  It is essentially a buffer where a new row may
     * be constructed by calling the <code>updateXXX</code> methods prior to 
     * inserting the row into the result set.  
     *
     * Only the <code>updateXXX</code>, <code>getXXX</code>,
	 * and <code>insertRow</code> methods may be 
     * called when the cursor is on the insert row.  All of the columns in 
     * a result set must be given a value each time this method is
     * called before calling <code>insertRow</code>.  
	 * An <code>updateXXX</code> method must be called before a
     * <code>getXXX</code> method can be called on a column value.
     *
     * @exception SQLException if a database access error occurs
     * or the result set is not updatable
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void moveToInsertRow() throws SQLException;

    /**
     * Moves the cursor to the remembered cursor position, usually the
     * current row.  This method has no effect if the cursor is not on 
	 * the insert row. 
     *
     * @exception SQLException if a database access error occurs
     * or the result set is not updatable
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    void moveToCurrentRow() throws SQLException;

    /**
     * Returns the <code>Statement</code> object that produced this 
	 * <code>ResultSet</code> object.
	 * If the result set was generated some other way, such as by a
	 * <code>DatabaseMetaData</code> method, this method returns 
	 * <code>null</code>.
     *
     * @return the <code>Statment</code> object that produced 
	 * this <code>ResultSet</code> object or <code>null</code>
     * if the result set was produced some other way
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Statement getStatement() throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as an <code>Object</code>
	 * in the Java programming language.
	 * This method uses the given <code>Map</code> object
     * for the custom mapping of the
     * SQL structured or distinct type that is being retrieved.
     *
     * @param i the first column is 1, the second is 2, ...
     * @param map a <code>java.util.Map</code> object that contains the mapping 
	 * from SQL type names to classes in the Java programming language
     * @return an <code>Object</code> in the Java programming language
	 * representing the SQL value
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Object getObject(int i, java.util.Map map) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Ref</code> object
	 * in the Java programming language.
     *
     * @param i the first column is 1, the second is 2, ...
     * @return a <code>Ref</code> object representing an SQL <code>REF</code> value
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Ref getRef(int i) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Blob</code> object
	 * in the Java programming language.
     *
     * @param i the first column is 1, the second is 2, ...
     * @return a <code>Blob</code> object representing the SQL <code>BLOB</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Blob getBlob(int i) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Clob</code> object
	 * in the Java programming language.
     *
     * @param i the first column is 1, the second is 2, ...
     * @return a <code>Clob</code> object representing the SQL <code>CLOB</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Clob getClob(int i) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as an <code>Array</code> object
	 * in the Java programming language.
     *
     * @param i the first column is 1, the second is 2, ...
     * @return an <code>Array</code> object representing the SQL <code>ARRAY</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Array getArray(int i) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as an <code>Object</code>
	 * in the Java programming language.
	 * This method uses the specified <code>Map</code> object for
	 * custom mapping if appropriate.
     *
     * @param colName the name of the column from which to retrieve the value
     * @param map a <code>java.util.Map</code> object that contains the mapping 
	 * from SQL type names to classes in the Java programming language
     * @return an <code>Object</code> representing the SQL value in the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Object getObject(String colName, java.util.Map map) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Ref</code> object
	 * in the Java programming language.
     *
     * @param colName the column name
     * @return a <code>Ref</code> object representing the SQL <code>REF</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Ref getRef(String colName) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Blob</code> object
	 * in the Java programming language.
     *
     * @param colName the name of the column from which to retrieve the value
     * @return a <code>Blob</code> object representing the SQL <code>BLOB</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Blob getBlob(String colName) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>Clob</code> object
	 * in the Java programming language.
     *
     * @param colName the name of the column from which to retrieve the value
     * @return a <code>Clob</code> object representing the SQL <code>CLOB</code>
	 * value in the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Clob getClob(String colName) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as an <code>Array</code> object
	 * in the Java programming language.
     *
     * @param colName the name of the column from which to retrieve the value
     * @return an <code>Array</code> object representing the SQL <code>ARRAY</code> value in
	 *         the specified column
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    Array getArray(String colName) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Date</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the date if the underlying database does not store
     * timezone information.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the date
     * @return the column value as a <code>java.sql.Date</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Date getDate(int columnIndex, Calendar cal) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Date</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the date if the underlying database does not store
     * timezone information.
     *
     * @param columnName the SQL name of the column from which to retrieve the value
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the date
     * @return the column value as a <code>java.sql.Date</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Date getDate(String columnName, Calendar cal) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Time</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the time if the underlying database does not store
     * timezone information.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the time
     * @return the column value as a <code>java.sql.Time</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Time getTime(int columnIndex, Calendar cal) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Time</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the time if the underlying database does not store
     * timezone information.
     *
     * @param columnName the SQL name of the column
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the time
     * @param cal the calendar to use in constructing the time
     * @return the column value as a <code>java.sql.Time</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Time getTime(String columnName, Calendar cal) throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Timestamp</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the timestamp if the underlying database does not store
     * timezone information.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the timestamp
     * @return the column value as a <code>java.sql.Timestamp</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Timestamp getTimestamp(int columnIndex, Calendar cal) 
      throws SQLException;

    /**
     * Returns the value of the designated column in the current row
	 * of this <code>ResultSet</code> object as a <code>java.sql.Timestamp</code> object
	 * in the Java programming language.
     * This method uses the given calendar to construct an appropriate millisecond
     * value for the timestamp if the underlying database does not store
     * timezone information.
     *
     * @param columnName the SQL name of the column
     * @param cal the <code>java.util.Calendar</code> object
	 * to use in constructing the date
     * @return the column value as a <code>java.sql.Timestamp</code> object;
	 * if the value is SQL <code>NULL</code>,
	 * the value returned is <code>null</code> in the Java programming language
     * @exception SQLException if a database access error occurs
     * @since 1.2
     * @see <a href="package-summary.html#2.0 API">What Is in the JDBC
     *      2.0 API</a>
     */
    java.sql.Timestamp getTimestamp(String columnName, Calendar cal)	
      throws SQLException;
}