/*
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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 2011-2014 ForgeRock AS
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*/
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package org.opends.server.backends.pluggable;
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import java.util.List;
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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.forgerock.opendj.ldap.ConditionResult;
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import org.forgerock.opendj.ldap.spi.IndexingOptions;
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import org.opends.server.backends.pluggable.BackendImpl.ReadableStorage;
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import org.opends.server.backends.pluggable.BackendImpl.Storage;
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import org.opends.server.backends.pluggable.BackendImpl.StorageRuntimeException;
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import org.opends.server.backends.pluggable.BackendImpl.TreeName;
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import org.opends.server.backends.pluggable.BackendImpl.WriteableStorage;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.Entry;
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import org.opends.server.types.Modification;
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import com.sleepycat.je.PreloadConfig;
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import com.sleepycat.je.PreloadStats;
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/**
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* A null index which replaces id2children and id2subtree when they have been
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* disabled.
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*/
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final class NullIndex extends Index
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{
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/**
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* Create a new null index object.
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*
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* @param name
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* The name of the index database within the entryContainer.
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* @param indexer
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* The indexer object to construct index keys from LDAP attribute
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* values.
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* @param state
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* The state database to persist index state info.
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* @param storage
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* The JE Storage
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* @param entryContainer
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* The database entryContainer holding this index.
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* @throws StorageRuntimeException
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* If an error occurs in the JE database.
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*/
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public NullIndex(TreeName name, Indexer indexer, State state, Storage storage,
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EntryContainer entryContainer) throws StorageRuntimeException
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{
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super(name, indexer, state, 0, 0, false, storage, entryContainer);
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}
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/** {@inheritDoc} */
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@Override
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void updateKey(WriteableStorage txn, ByteString key, EntryIDSet deletedIDs,
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EntryIDSet addedIDs) throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public void delete(IndexBuffer buffer, ByteString keyBytes)
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public ConditionResult containsID(ReadableStorage txn, ByteString key,
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EntryID entryID) throws StorageRuntimeException
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{
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return ConditionResult.UNDEFINED;
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}
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/** {@inheritDoc} */
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@Override
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public EntryIDSet readKey(ByteSequence key, ReadableStorage txn)
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{
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return new EntryIDSet();
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}
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/** {@inheritDoc} */
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@Override
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public void writeKey(WriteableStorage txn, ByteString key,
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EntryIDSet entryIDList) throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public EntryIDSet readRange(ByteSequence lower, ByteSequence upper,
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boolean lowerIncluded, boolean upperIncluded)
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{
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return new EntryIDSet();
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}
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/** {@inheritDoc} */
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@Override
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public int getEntryLimitExceededCount()
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{
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return 0;
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}
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/** {@inheritDoc} */
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@Override
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public void closeCursor() throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public void addEntry(IndexBuffer buffer, EntryID entryID, Entry entry, IndexingOptions options)
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throws StorageRuntimeException, DirectoryException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public void removeEntry(IndexBuffer buffer, EntryID entryID, Entry entry, IndexingOptions options)
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throws StorageRuntimeException, DirectoryException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public void modifyEntry(IndexBuffer buffer, EntryID entryID, Entry oldEntry,
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Entry newEntry, List<Modification> mods, IndexingOptions options) throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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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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/** {@inheritDoc} */
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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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/** {@inheritDoc} */
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@Override
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public void setTrusted(WriteableStorage txn, boolean trusted)
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throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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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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/** {@inheritDoc} */
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@Override
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public boolean isRebuildRunning()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public void setRebuildStatus(boolean rebuildRunning)
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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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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/** {@inheritDoc} */
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@Override
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public void open(WriteableStorage txn) throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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public void close() throws StorageRuntimeException
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{
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// Do nothing.
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}
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/** {@inheritDoc} */
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@Override
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protected void put(WriteableStorage txn, ByteSequence key, ByteSequence value) throws StorageRuntimeException
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{
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}
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/** {@inheritDoc} */
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@Override
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protected ByteString read(ReadableStorage txn, ByteSequence key, boolean isRMW) throws StorageRuntimeException
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{
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return null;
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}
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/** {@inheritDoc} */
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@Override
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protected boolean insert(WriteableStorage txn, ByteString key,
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ByteString value) throws StorageRuntimeException
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{
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return true;
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}
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/** {@inheritDoc} */
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@Override
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protected boolean delete(WriteableStorage txn, ByteSequence key)
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throws StorageRuntimeException
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{
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return true;
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}
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/** {@inheritDoc} */
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@Override
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public long getRecordCount() throws StorageRuntimeException
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{
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return 0;
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}
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/** {@inheritDoc} */
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@Override
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public PreloadStats preload(PreloadConfig config) throws StorageRuntimeException
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{
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return new PreloadStats();
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}
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}
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