org.apache.directory.server.core.partition.impl.btree.jdbm
Class BTreeTupleEnumeration

java.lang.Object
  extended by org.apache.directory.server.core.partition.impl.btree.jdbm.BTreeTupleEnumeration
All Implemented Interfaces:
java.util.Enumeration, javax.naming.NamingEnumeration

public class BTreeTupleEnumeration
extends java.lang.Object
implements javax.naming.NamingEnumeration

A NamingEnumeration that returns underlying keys in a BTree as values for a single key within a Tuple. This is used specifically for situations when tables support duplicate keys and a BTree is used for storing the values for that key. This enumeration thus advances a browser forwards or reverse returning keys from a BTree as Tuple values. The key provided in the constructor is always returned as the key of the Tuple.

WARNING: The tuple returned is reused every time for efficiency and populated a over and over again with the new value. The key never changes.

Version:
$Rev$
Author:
Apache Directory Project

Method Summary
 void close()
           
 boolean hasMore()
           
 boolean hasMoreElements()
           
 java.lang.Object next()
           
 java.lang.Object nextElement()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

close

public void close()
           throws javax.naming.NamingException
Specified by:
close in interface javax.naming.NamingEnumeration
Throws:
javax.naming.NamingException

hasMore

public boolean hasMore()
                throws javax.naming.NamingException
Specified by:
hasMore in interface javax.naming.NamingEnumeration
Throws:
javax.naming.NamingException

next

public java.lang.Object next()
                      throws javax.naming.NamingException
Specified by:
next in interface javax.naming.NamingEnumeration
Throws:
javax.naming.NamingException

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


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