- /*
- * @(#)TransientBindingIterator.java 1.45 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.naming.cosnaming;
-
- // Import general CORBA classes
- import org.omg.CORBA.SystemException;
- import org.omg.CORBA.ORB;
- import org.omg.PortableServer.POA;
-
- // Get org.omg.CosNaming Types
- import org.omg.CosNaming.Binding;
- import org.omg.CosNaming.BindingType;
- import org.omg.CosNaming.BindingTypeHolder;
- import org.omg.CosNaming.NameComponent;
-
- // Get base implementation
- import com.sun.corba.se.impl.naming.cosnaming.NamingContextImpl;
- import com.sun.corba.se.impl.naming.cosnaming.InternalBindingValue;
-
- // Get a hash table
- import java.util.Hashtable;
- import java.util.Enumeration;
-
- /**
- * Class TransientBindingIterator implements the abstract methods
- * defined by BindingIteratorImpl, to use with the TransientNamingContext
- * implementation of the NamingContextImpl. The TransientBindingIterator
- * implementation receives a hash table of InternalBindingValues, and uses
- * an Enumeration to iterate over the contents of the hash table.
- * @see BindingIteratorImpl
- * @see TransientNamingContext
- */
- public class TransientBindingIterator extends BindingIteratorImpl
- {
- // There is only one POA used for both TransientNamingContext and
- // TransientBindingIteraor servants.
- private POA nsPOA;
- /**
- * Constructs a new TransientBindingIterator object.
- * @param orb a org.omg.CORBA.ORB object.
- * @param aTable A hashtable containing InternalBindingValues which is
- * the content of the TransientNamingContext.
- * @param java.lang.Exception a Java exception.
- * @exception Exception a Java exception thrown of the base class cannot
- * initialize.
- */
- public TransientBindingIterator(ORB orb, Hashtable aTable,
- POA thePOA )
- throws java.lang.Exception
- {
- super(orb);
- theHashtable = aTable;
- theEnumeration = this.theHashtable.elements();
- currentSize = this.theHashtable.size();
- this.nsPOA = thePOA;
- }
-
- /**
- * Returns the next binding in the NamingContext. Uses the enumeration
- * object to determine if there are more bindings and if so, returns
- * the next binding from the InternalBindingValue.
- * @param b The Binding as an out parameter.
- * @return true if there were more bindings.
- */
- final public boolean NextOne(org.omg.CosNaming.BindingHolder b)
- {
- // If there are more elements get the next element
- boolean hasMore = theEnumeration.hasMoreElements();
- if (hasMore) {
- b.value =
- ((InternalBindingValue)theEnumeration.nextElement()).theBinding;
- currentSize--;
- } else {
- // Return empty but marshalable binding
- b.value = new Binding(new NameComponent[0],BindingType.nobject);
- }
- return hasMore;
- }
-
- /**
- * Destroys this BindingIterator by disconnecting from the ORB
- * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
- * system exceptions.
- */
- final public void Destroy()
- {
- // Remove the object from the Active Object Map.
- try {
- byte[] objectId = nsPOA.servant_to_id( this );
- if( objectId != null ) {
- nsPOA.deactivate_object( objectId );
- }
- }
- catch( Exception e ) {
- NamingUtils.errprint("BindingIterator.Destroy():caught exception:");
- NamingUtils.printException(e);
- }
- }
-
- /**
- * Returns the remaining number of elements in the iterator.
- * @return the remaining number of elements in the iterator.
- */
- public final int RemainingElements() {
- return currentSize;
- }
-
- private int currentSize;
- private Hashtable theHashtable;
- private Enumeration theEnumeration;
- }