| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.core.partition.impl.avl; |
| |
| |
| import java.net.URI; |
| |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.api.ldap.model.schema.comparators.UuidComparator; |
| import org.apache.directory.server.constants.ApacheSchemaConstants; |
| import org.apache.directory.server.core.api.DnFactory; |
| import org.apache.directory.server.core.api.partition.Partition; |
| import org.apache.directory.server.core.partition.impl.btree.AbstractBTreePartition; |
| import org.apache.directory.server.xdbm.Index; |
| import org.apache.directory.server.xdbm.impl.avl.AvlIndex; |
| import org.apache.directory.server.xdbm.impl.avl.AvlMasterTable; |
| import org.apache.directory.server.xdbm.impl.avl.AvlRdnIndex; |
| import org.apache.directory.server.xdbm.search.impl.CursorBuilder; |
| import org.apache.directory.server.xdbm.search.impl.DefaultOptimizer; |
| import org.apache.directory.server.xdbm.search.impl.DefaultSearchEngine; |
| import org.apache.directory.server.xdbm.search.impl.EvaluatorBuilder; |
| import org.apache.directory.server.xdbm.search.impl.NoOpOptimizer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * An XDBM Partition backed by in memory AVL Trees. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class AvlPartition extends AbstractBTreePartition |
| { |
| /** static logger */ |
| private static final Logger LOG = LoggerFactory.getLogger( AvlPartition.class ); |
| |
| |
| /** |
| * Creates a store based on AVL Trees. |
| * |
| * @param schemaManager the schema manager |
| */ |
| public AvlPartition( SchemaManager schemaManager ) |
| { |
| super( schemaManager ); |
| } |
| |
| |
| /** |
| * Creates a store based on AVL Trees. |
| * |
| * @param schemaManager the schema manager |
| * @param dnFactory the DN factory |
| */ |
| public AvlPartition( SchemaManager schemaManager, DnFactory dnFactory ) |
| { |
| super( schemaManager, dnFactory ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected void doInit() throws Exception |
| { |
| if ( !initialized ) |
| { |
| EvaluatorBuilder evaluatorBuilder = new EvaluatorBuilder( this, schemaManager ); |
| CursorBuilder cursorBuilder = new CursorBuilder( this, evaluatorBuilder ); |
| |
| // setup optimizer and registries for parent |
| if ( !optimizerEnabled ) |
| { |
| setOptimizer( new NoOpOptimizer() ); |
| } |
| else |
| { |
| setOptimizer( new DefaultOptimizer<Entry>( this ) ); |
| } |
| |
| setSearchEngine( new DefaultSearchEngine( this, cursorBuilder, evaluatorBuilder, getOptimizer() ) ); |
| |
| if ( isInitialized() ) |
| { |
| return; |
| } |
| |
| // Create the master table (the table containing all the entries) |
| master = new AvlMasterTable( id, UuidComparator.INSTANCE, null, false ); |
| |
| super.doInit(); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String getDefaultId() |
| { |
| return Partition.DEFAULT_ID; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String getRootId() |
| { |
| return Partition.ROOT_ID; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void sync() throws Exception |
| { |
| // Nothing to do |
| } |
| |
| |
| /** |
| * always returns false, cause this is a in-memory store |
| */ |
| @Override |
| public boolean isSyncOnWrite() |
| { |
| return false; |
| } |
| |
| |
| /** |
| * Always returns 0 (zero), cause this is a in-memory store |
| */ |
| @Override |
| public int getCacheSize() |
| { |
| return 0; |
| } |
| |
| |
| @Override |
| protected Index<?, String> convertAndInit( Index<?, String> index ) throws Exception |
| { |
| AvlIndex<?> avlIndex; |
| |
| if ( index.getAttributeId().equals( ApacheSchemaConstants.APACHE_RDN_AT_OID ) ) |
| { |
| avlIndex = new AvlRdnIndex( index.getAttributeId() ); |
| } |
| else if ( index instanceof AvlIndex<?> ) |
| { |
| avlIndex = ( AvlIndex<?> ) index; |
| } |
| else |
| { |
| LOG.debug( "Supplied index {} is not a AvlIndex. " |
| + "Will create new AvlIndex using copied configuration parameters.", index ); |
| avlIndex = new AvlIndex( index.getAttributeId(), true ); |
| } |
| |
| avlIndex.init( schemaManager, schemaManager.lookupAttributeTypeRegistry( index.getAttributeId() ) ); |
| |
| return avlIndex; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected final Index createSystemIndex( String oid, URI path, boolean withReverse ) throws Exception |
| { |
| LOG.debug( "Supplied index {} is not a JdbmIndex. " |
| + "Will create new JdbmIndex using copied configuration parameters." ); |
| |
| AvlIndex<?> avlIndex; |
| |
| if ( oid.equals( ApacheSchemaConstants.APACHE_RDN_AT_OID ) ) |
| { |
| avlIndex = new AvlRdnIndex( oid ); |
| } |
| else |
| { |
| LOG.debug( "Supplied index {} is not a AvlIndex. " |
| + "Will create new AvlIndex using copied configuration parameters." ); |
| avlIndex = new AvlIndex( oid, withReverse ); |
| } |
| |
| return avlIndex; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public URI getPartitionPath() |
| { |
| // It's a in-memory partition, return null |
| return null; |
| } |
| } |