- /*
- * @(#)DynFixedImpl.java 1.8 03/12/19
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.corba.se.impl.dynamicany;
-
- import org.omg.CORBA.TypeCode;
- import org.omg.CORBA.Any;
- import org.omg.CORBA.NO_IMPLEMENT;
- import org.omg.DynamicAny.*;
- import org.omg.DynamicAny.DynAnyPackage.*;
- import java.math.BigDecimal;
- import java.math.BigInteger;
- import org.omg.CORBA.TypeCodePackage.BadKind;
-
- import com.sun.corba.se.spi.orb.ORB ;
- import com.sun.corba.se.spi.logging.CORBALogDomains ;
- import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
-
- public class DynFixedImpl extends DynAnyBasicImpl implements DynFixed
- {
- //
- // Constructors
- //
-
- private DynFixedImpl() {
- this(null, (Any)null, false);
- }
-
- protected DynFixedImpl(ORB orb, Any any, boolean copyValue) {
- super(orb, any, copyValue);
- }
-
- // Sets the current position to -1 and the value to zero.
- protected DynFixedImpl(ORB orb, TypeCode typeCode) {
- super(orb, typeCode);
- index = NO_INDEX;
- }
-
- //
- // DynAny interface methods
- //
- /*
- public int component_count() {
- return 0;
- }
- */
- //
- // DynFixed interface methods
- //
-
- public String get_value () {
- if (status == STATUS_DESTROYED) {
- throw wrapper.dynAnyDestroyed() ;
- }
- return any.extract_fixed().toString();
- }
-
- // Initializes the value of the DynFixed.
- // The val string must contain a fixed string constant in the same format
- // as used for IDL fixed-point literals.
- //
- // It may consist of an integer part, an optional decimal point,
- // a fraction part and an optional letter d or D.
- // The integer and fraction parts both must be sequences of decimal (base 10) digits.
- // Either the integer part or the fraction part, but not both, may be missing.
- //
- // If val contains a value whose scale exceeds that of the DynFixed or is not initialized,
- // the operation raises InvalidValue.
- // The return value is true if val can be represented as the DynFixed without loss of precision.
- // If val has more fractional digits than can be represented in the DynFixed,
- // fractional digits are truncated and the return value is false.
- // If val does not contain a valid fixed-point literal or contains extraneous characters
- // other than leading or trailing white space, the operation raises TypeMismatch.
- //
- public boolean set_value (String val)
- throws org.omg.DynamicAny.DynAnyPackage.TypeMismatch,
- org.omg.DynamicAny.DynAnyPackage.InvalidValue
- {
- if (status == STATUS_DESTROYED) {
- throw wrapper.dynAnyDestroyed() ;
- }
- int digits = 0;
- int scale = 0;
- boolean preservedPrecision = true;
- try {
- digits = any.type().fixed_digits();
- scale = any.type().fixed_scale();
- } catch (BadKind ex) { // impossible
- }
- // First get rid of leading or trailing whitespace which is allowed
- String string = val.trim();
- if (string.length() == 0)
- throw new TypeMismatch();
- // Now scan for the sign
- String sign = "";
- if (string.charAt(0) == '-') {
- sign = "-";
- string = string.substring(1);
- } else if (string.charAt(0) == '+') {
- sign = "+";
- string = string.substring(1);
- }
- // Now get rid of the letter d or D.
- int dIndex = string.indexOf('d');
- if (dIndex == -1) {
- dIndex = string.indexOf('D');
- }
- if (dIndex != -1) {
- string = string.substring(0, dIndex);
- }
- // Just to be sure
- if (string.length() == 0)
- throw new TypeMismatch();
- // Now look for the dot to determine the integer part
- String integerPart;
- String fractionPart;
- int currentScale;
- int currentDigits;
- int dotIndex = string.indexOf('.');
- if (dotIndex == -1) {
- integerPart = string;
- fractionPart = null;
- currentScale = 0;
- currentDigits = integerPart.length();
- } else if (dotIndex == 0 ) {
- integerPart = null;
- fractionPart = string;
- currentScale = fractionPart.length();
- currentDigits = currentScale;
- } else {
- integerPart = string.substring(0, dotIndex);
- fractionPart = string.substring(dotIndex + 1);
- currentScale = fractionPart.length();
- currentDigits = integerPart.length() + currentScale;
- }
- // Let's see if we have to drop some precision
- if (currentDigits > digits) {
- preservedPrecision = false;
- // truncate the fraction part
- if (integerPart.length() < digits) {
- fractionPart = fractionPart.substring(0, digits - integerPart.length());
- } else if (integerPart.length() == digits) {
- // currentScale > 0
- // drop the fraction completely
- fractionPart = null;
- } else {
- // integerPart.length() > digits
- // unable to truncate fraction part
- throw new InvalidValue();
- }
- }
- // If val contains a value whose scale exceeds that of the DynFixed or is not initialized,
- // the operation raises InvalidValue.
- // Reinterpreted to mean raise InvalidValue only if the integer part exceeds precision,
- // which is handled above (integerPart.length() > digits)
- /*
- if (currentScale > scale) {
- throw new InvalidValue("Scale exceeds " + scale);
- }
- */
- // Now check whether both parts are valid numbers
- BigDecimal result;
- try {
- new BigInteger(integerPart);
- if (fractionPart == null) {
- result = new BigDecimal(sign + integerPart);
- } else {
- new BigInteger(fractionPart);
- result = new BigDecimal(sign + integerPart + "." + fractionPart);
- }
- } catch (NumberFormatException nfe) {
- throw new TypeMismatch();
- }
- any.insert_fixed(result, any.type());
- return preservedPrecision;
- }
-
- public String toString() {
- int digits = 0;
- int scale = 0;
- try {
- digits = any.type().fixed_digits();
- scale = any.type().fixed_scale();
- } catch (BadKind ex) { // impossible
- }
- return "DynFixed with value=" + this.get_value() + ", digits=" + digits + ", scale=" + scale;
- }
- }