oracle.toplink.ejb.cmp.wls11
Class EnumeratorImpl

java.lang.Object
oracle.toplink.ejb.cmp.wls11.EnumeratorImpl

All Implemented Interfaces:

java.util.Enumeration, java.io.Serializable

public class EnumeratorImpl

extends java.lang.Object

implements java.io.Serializable, java.util.Enumeration

Although Vectors are Serializable, their Enumerations (obtained by the .elements() method) are not.When a finder query returns an Enumeration it cannot simply return a regular VectorEnumerator since this class will not marshal properly. EnumeratorImpl implements Serializable, and hence can be sent across from the server to the client. EnumeratorImpl has a Vector whose Enumeration (elements) are lazily initialized once the client invokes methods on it. There are no serialization problems since the elements are stored in a transient attribute.

See Also:

Serialized Form

Constructor Summary

EnumeratorImpl(java.util.Vector vect)
Creates an EnumeratorImpl for a given vector.

Method Summary

boolean	hasMoreElements()
java.lang.Object	nextElement()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EnumeratorImpl

public EnumeratorImpl(java.util.Vector vect)

Creates an EnumeratorImpl for a given vector. You shouldn't access the vector once it is wrapped.

Method Detail

hasMoreElements

public boolean hasMoreElements()

Specified by:

hasMoreElements in interface java.util.Enumeration

nextElement

public java.lang.Object nextElement()

Specified by:

nextElement in interface java.util.Enumeration