/**
* Copyright (c) 2002-2011 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.index.impl.lucene;
import java.util.HashMap;
import java.util.Map;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Field.Store;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.PropertyContainer;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.index.BatchInserterIndex;
import org.neo4j.graphdb.index.BatchInserterIndexProvider;
import org.neo4j.graphdb.index.Index;
import org.neo4j.helpers.collection.MapUtil;
import org.neo4j.kernel.impl.batchinsert.BatchInserter;
import org.neo4j.kernel.impl.batchinsert.BatchInserterImpl;
import org.neo4j.kernel.impl.batchinsert.SimpleRelationship;
import org.neo4j.kernel.impl.index.IndexStore;
/**
* The {@link BatchInserter} version of {@link LuceneIndexProvider}. Indexes
* created and populated using {@link BatchInserterIndex}s from this provider
* are compatible with {@link Index}s from {@link LuceneIndexProvider}.
*/
public class LuceneBatchInserterIndexProvider implements BatchInserterIndexProvider
{
private final BatchInserter inserter;
private final Map<IndexIdentifier, LuceneBatchInserterIndex> indexes =
new HashMap<IndexIdentifier, LuceneBatchInserterIndex>();
final IndexStore indexStore;
final EntityType nodeEntityType;
final EntityType relationshipEntityType;
public LuceneBatchInserterIndexProvider( final BatchInserter inserter )
{
this.inserter = inserter;
this.indexStore = ((BatchInserterImpl) inserter).getIndexStore();
this.nodeEntityType = new EntityType()
{
public Document newDocument( Object entityId )
{
return IndexType.newBaseDocument( (Long) entityId );
}
public Class<? extends PropertyContainer> getType()
{
return Node.class;
}
};
this.relationshipEntityType = new EntityType()
{
public Document newDocument( Object entityId )
{
RelationshipId relId = null;
if(entityId instanceof Long) {
SimpleRelationship relationship = inserter.getRelationshipById( (Long) entityId );
relId = new RelationshipId( relationship.getId(), relationship.getStartNode(), relationship.getEndNode() );
} else if (entityId instanceof RelationshipId ) {
relId = (RelationshipId) entityId;
} else {
new IllegalArgumentException( "Ids of type " + entityId.getClass() + " are not supported.");
}
Document doc = IndexType.newBaseDocument( relId.id );
doc.add( new Field( LuceneIndex.KEY_START_NODE_ID, "" + relId.startNode,
Store.YES, org.apache.lucene.document.Field.Index.NOT_ANALYZED ) );
doc.add( new Field( LuceneIndex.KEY_END_NODE_ID, "" + relId.endNode,
Store.YES, org.apache.lucene.document.Field.Index.NOT_ANALYZED ) );
return doc;
}
public Class<? extends PropertyContainer> getType()
{
return Relationship.class;
}
};
}
public BatchInserterIndex nodeIndex( String indexName, Map<String, String> config )
{
config( Node.class, indexName, config );
return index( new IndexIdentifier( LuceneCommand.NODE, nodeEntityType, indexName ), config );
}
private Map<String, String> config( Class<? extends PropertyContainer> cls,
String indexName, Map<String, String> config )
{
// TODO Doesn't look right
if ( config != null )
{
config = MapUtil.stringMap( new HashMap<String, String>( config ),
"provider", LuceneIndexProvider.SERVICE_NAME );
indexStore.setIfNecessary( cls, indexName, config );
return config;
}
else
{
return indexStore.get( cls, indexName );
}
}
public BatchInserterIndex relationshipIndex( String indexName, Map<String, String> config )
{
config( Relationship.class, indexName, config );
return index( new IndexIdentifier( LuceneCommand.RELATIONSHIP, relationshipEntityType, indexName ), config );
}
private BatchInserterIndex index( IndexIdentifier identifier, Map<String, String> config )
{
// We don't care about threads here... c'mon... it's a
// single-threaded batch inserter
LuceneBatchInserterIndex index = indexes.get( identifier );
if ( index == null )
{
index = new LuceneBatchInserterIndex( this, inserter, identifier, config );
indexes.put( identifier, index );
}
return index;
}
public void shutdown()
{
for ( LuceneBatchInserterIndex index : indexes.values() )
{
index.shutdown();
}
}
}