/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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* Copyright 2011-2015 ForgeRock AS
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*/
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package org.opends.server.backends.pluggable;
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import static org.opends.server.backends.pluggable.EntryIDSet.newUndefinedSet;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.ByteString;
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import org.opends.server.backends.pluggable.spi.Cursor;
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import org.opends.server.backends.pluggable.spi.ReadableTransaction;
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import org.opends.server.backends.pluggable.spi.StorageRuntimeException;
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import org.opends.server.backends.pluggable.spi.TreeName;
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import org.opends.server.backends.pluggable.spi.WriteableTransaction;
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/**
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* A null index which replaces id2children and id2subtree when they have been disabled.
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*/
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final class NullIndex implements Index
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{
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private final TreeName name;
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NullIndex(TreeName name)
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{
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this.name = name;
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}
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@Override
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public void update(WriteableTransaction txn, ByteString key, EntryIDSet deletedIDs, EntryIDSet addedIDs)
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throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public EntryIDSet get(ReadableTransaction txn, ByteSequence key)
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{
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return newUndefinedSet();
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}
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@Override
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public boolean setIndexEntryLimit(int indexEntryLimit)
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{
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return false;
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}
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@Override
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public int getIndexEntryLimit()
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{
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return 0;
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}
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@Override
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public void setTrusted(WriteableTransaction txn, boolean trusted) throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public boolean isTrusted()
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{
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return true;
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}
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@Override
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public boolean getMaintainCount()
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{
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return false;
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}
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@Override
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public long getRecordCount(ReadableTransaction txn) throws StorageRuntimeException
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{
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return 0;
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}
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@Override
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public Cursor<ByteString, EntryIDSet> openCursor(ReadableTransaction txn)
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{
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return new Cursor<ByteString, EntryIDSet>()
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{
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@Override
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public boolean positionToKey(ByteSequence key)
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{
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return false;
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}
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@Override
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public boolean positionToKeyOrNext(ByteSequence key)
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{
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return false;
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}
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@Override
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public boolean positionToLastKey()
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{
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return false;
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}
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@Override
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public boolean positionToIndex(int index)
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{
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return false;
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}
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@Override
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public boolean next()
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{
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return false;
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}
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@Override
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public ByteString getKey()
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{
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return null;
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}
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@Override
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public EntryIDSet getValue()
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{
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return null;
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}
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@Override
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public void close()
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{
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// Nothing to do.
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}
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};
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}
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@Override
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public void importRemove(WriteableTransaction txn, ImportIDSet idsToBeRemoved) throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public void importPut(WriteableTransaction txn, ImportIDSet idsToBeAdded) throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public TreeName getName()
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{
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return name;
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}
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@Override
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public void open(WriteableTransaction txn) throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public void delete(WriteableTransaction txn) throws StorageRuntimeException
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{
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// Do nothing.
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}
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@Override
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public void setName(TreeName name)
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{
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// Do nothing.
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}
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}
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