com.sun.ejb.portable.ObjrefEnumeration Maven / Gradle / Ivy
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package com.sun.ejb.portable;
import java.util.*;
import java.io.Serializable;
/**
* This class is necessary because neither Vector nor Hashtable
* return a Serializable Enumeration, which can be sent from the
* EJB server back to the client.
* This class must be available at the client too, and it could
* be instantiated in another vendor's container.
*
*/
public final class ObjrefEnumeration implements Enumeration, Serializable
{
private int count=0;
private ArrayList objrefs;
// This is called only by the EJB container in the RI.
public void add(Object obj)
{
if ( objrefs == null )
objrefs = new ArrayList();
objrefs.add(obj);
}
public boolean hasMoreElements()
{
if ( objrefs == null )
return false;
return count < objrefs.size();
}
public Object nextElement()
{
if ( objrefs != null ) {
synchronized (this) {
if (count < objrefs.size()) {
return objrefs.get(count++);
}
}
}
throw new NoSuchElementException("ObjrefEnumeration");
}
}