/*
* $Header$
* $Revision: 982 $
* $Date: 2006-12-08 18:42:51 +1000 (Fri, 08 Dec 2006) $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003-2009 The JRDF Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* the JRDF Project (http://jrdf.sf.net/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The JRDF Project" and "JRDF" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* newmana@users.sourceforge.net.
*
* 5. Products derived from this software may not be called "JRDF"
* nor may "JRDF" appear in their names without prior written
* permission of the JRDF Project.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the JRDF Project. For more
* information on JRDF, please see <http://jrdf.sourceforge.net/>.
*
*/
package org.jrdf;
import org.jrdf.collection.BdbCollectionFactory;
import org.jrdf.collection.BdbMapFactory;
import org.jrdf.collection.IteratorTrackingCollectionFactory;
import org.jrdf.collection.MapFactory;
import org.jrdf.graph.Graph;
import org.jrdf.graph.local.OrderedGraphFactoryImpl;
import org.jrdf.graph.local.index.longindex.LongIndex;
import org.jrdf.graph.local.index.longindex.bdb.LongIndexBdb;
import org.jrdf.graph.local.index.nodepool.NodePoolFactory;
import org.jrdf.graph.local.index.nodepool.bdb.BdbNodePoolFactory;
import org.jrdf.query.QueryFactory;
import org.jrdf.query.QueryFactoryImpl;
import org.jrdf.query.execute.QueryEngine;
import org.jrdf.sparql.SparqlConnection;
import org.jrdf.sparql.SparqlConnectionImpl;
import org.jrdf.sparql.builder.QueryBuilder;
import org.jrdf.util.DirectoryHandler;
import org.jrdf.util.TempDirectoryHandler;
import org.jrdf.util.bdb.BdbEnvironmentHandler;
import org.jrdf.util.bdb.BdbEnvironmentHandlerImpl;
import static java.util.Arrays.asList;
import java.util.HashSet;
import java.util.Set;
public final class SortedDiskBdbJRDFFactory implements JRDFFactory {
private static final QueryFactory QUERY_FACTORY = new QueryFactoryImpl();
private static final QueryEngine QUERY_ENGINE = QUERY_FACTORY.createQueryEngine();
private static final QueryBuilder BUILDER = QUERY_FACTORY.createQueryBuilder();
private static final DirectoryHandler HANDLER = new TempDirectoryHandler();
private static final BdbEnvironmentHandler BDB_HANDLER = new BdbEnvironmentHandlerImpl(HANDLER);
private static long graphNumber;
private Set<LongIndex> openIndexes = new HashSet<LongIndex>();
private Set<NodePoolFactory> openFactories = new HashSet<NodePoolFactory>();
private Set<MapFactory> openMapFactories = new HashSet<MapFactory>();
private IteratorTrackingCollectionFactory collectionFactory;
private SortedDiskBdbJRDFFactory() {
}
public static JRDFFactory getFactory() {
return new SortedDiskBdbJRDFFactory();
}
public void refresh() {
}
public Graph getNewGraph() {
graphNumber++;
NodePoolFactory nodePoolFactory = new BdbNodePoolFactory(BDB_HANDLER, graphNumber);
MapFactory factory = new BdbMapFactory(new BdbEnvironmentHandlerImpl(new TempDirectoryHandler()),
"database" + graphNumber);
LongIndex[] indexes = createIndexes(factory);
collectionFactory = new BdbCollectionFactory(BDB_HANDLER, "collection" + graphNumber);
openIndexes.addAll(asList(indexes));
openMapFactories.add(factory);
openFactories.add(nodePoolFactory);
final Graph graph = new OrderedGraphFactoryImpl(indexes, nodePoolFactory, collectionFactory).getGraph();
graph.clear();
return graph;
}
public SparqlConnection getNewSparqlConnection() {
return new SparqlConnectionImpl(BUILDER, QUERY_ENGINE);
}
public void close() {
collectionFactory.close();
for (LongIndex index : openIndexes) {
index.close();
}
for (MapFactory factory : openMapFactories) {
factory.close();
}
for (NodePoolFactory openFactory : openFactories) {
openFactory.close();
}
openIndexes.clear();
openFactories.clear();
openMapFactories.clear();
}
private LongIndex[] createIndexes(MapFactory factory) {
return new LongIndex[]{new LongIndexBdb(factory), new LongIndexBdb(factory), new LongIndexBdb(factory)};
}
}