/*
* $Header$
* $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.IteratorTrackingCollectionFactory;
import org.jrdf.graph.Graph;
import org.jrdf.graph.global.MoleculeGraph;
import org.jrdf.graph.global.MoleculeGraphImpl;
import org.jrdf.graph.global.MoleculeLocalizer;
import org.jrdf.graph.global.MoleculeLocalizerImpl;
import org.jrdf.graph.global.index.ReadableIndex;
import org.jrdf.graph.global.index.ReadableIndexImpl;
import org.jrdf.graph.global.index.WritableIndex;
import org.jrdf.graph.global.index.WritableIndexImpl;
import org.jrdf.graph.global.index.adapter.LongIndexAdapter;
import org.jrdf.graph.global.index.longindex.MoleculeStructureIndex;
import org.jrdf.graph.global.index.longindex.sesame.MoleculeStructureIndexSesameSync;
import org.jrdf.graph.local.OrderedGraphFactoryImpl;
import org.jrdf.graph.local.index.longindex.LongIndex;
import org.jrdf.graph.local.index.nodepool.Localizer;
import org.jrdf.graph.local.index.nodepool.LocalizerImpl;
import org.jrdf.graph.local.index.nodepool.NodePool;
import org.jrdf.graph.local.index.nodepool.StringNodeMapper;
import org.jrdf.graph.local.index.nodepool.StringNodeMapperFactoryImpl;
import org.jrdf.sparql.SparqlConnection;
import org.jrdf.util.DirectoryHandler;
import org.jrdf.util.bdb.BdbEnvironmentHandlerImpl;
import org.jrdf.util.btree.BTreeFactory;
import org.jrdf.util.btree.BTreeFactoryImpl;
import static java.util.Arrays.asList;
import java.util.HashSet;
import java.util.Set;
/**
* Uses default in memory constructors to create JRDF entry points. Returns sorted results.
*
* @author Andrew Newman
* @version $Id: PersistentGlobalJRDFFactoryImpl.java 3210 2009-11-19 13:09:10Z newmana $
*/
public final class PersistentGlobalJRDFFactoryImpl implements PersistentGlobalJRDFFactory {
private static final StringNodeMapper STRING_MAPPER = new StringNodeMapperFactoryImpl().createMapper();
private final Set<MoleculeStructureIndex<Long>> openStructureIndexes = new HashSet<MoleculeStructureIndex<Long>>();
private final DirectoryHandler handler;
private BTreeFactory btreeFactory = new BTreeFactoryImpl();
private BasePersistentJRDFFactory base;
private PersistentGlobalJRDFFactoryImpl(DirectoryHandler newHandler) {
this.handler = newHandler;
this.base = new BasePersistentJRDFFactoryImpl(newHandler, new BdbEnvironmentHandlerImpl(handler));
refresh();
}
public static PersistentGlobalJRDFFactory getFactory(DirectoryHandler handler) {
return new PersistentGlobalJRDFFactoryImpl(handler);
}
public SparqlConnection getNewSparqlConnection() {
return base.createSparqlConnection();
}
public boolean hasGraph(String name) {
return base.hasGraph(name);
}
public MoleculeGraph getNewGraph() {
final MoleculeGraph moleculeGraph = getGraph("default");
moleculeGraph.clear();
return moleculeGraph;
}
public MoleculeGraph getGraph(String name) {
if (base.hasGraph(name)) {
return getExistingGraph(name);
} else {
return getNewGraph(name);
}
}
public MoleculeGraph getNewGraph(String name) {
long graphNumber = base.addNewGraph(name);
return getGraph(graphNumber);
}
public MoleculeGraph getExistingGraph(String name) throws IllegalArgumentException {
if (!base.hasGraph(name)) {
throw new IllegalArgumentException("Cannot get graph named: " + name);
} else {
return getGraph(base.getGraphId(name));
}
}
public void refresh() {
base.refresh();
}
public void close() {
base.close();
for (MoleculeStructureIndex<Long> index : openStructureIndexes) {
index.close();
}
openStructureIndexes.clear();
}
private MoleculeGraph getGraph(long graphNumber) {
final NodePool nodePool = base.createNodePool(graphNumber);
MoleculeStructureIndex<Long>[] structureIndexes = createMoleculeStructureIndexes(graphNumber);
ReadableIndex<Long> readIndex = new ReadableIndexImpl(structureIndexes);
WritableIndex<Long> writeIndex = new WritableIndexImpl(structureIndexes);
LongIndex[] longIndexes = new LongIndex[]{new LongIndexAdapter(structureIndexes[0]),
new LongIndexAdapter(structureIndexes[1]), new LongIndexAdapter(structureIndexes[2])};
IteratorTrackingCollectionFactory collectionFactory = base.createCollectionFactory(graphNumber);
Graph graph = new OrderedGraphFactoryImpl(longIndexes, nodePool, collectionFactory).getGraph();
final long curMaxMoleculeId = readIndex.getMaxMoleculeId();
Localizer localizer = new LocalizerImpl(nodePool, STRING_MAPPER);
MoleculeLocalizer moleculeLocalizer = new MoleculeLocalizerImpl(localizer, curMaxMoleculeId);
return new MoleculeGraphImpl(writeIndex, readIndex, moleculeLocalizer, graph, nodePool);
}
private MoleculeStructureIndex<Long>[] createMoleculeStructureIndexes(long graphNumber) {
MoleculeStructureIndex<Long>[] indexes = new MoleculeStructureIndexSesameSync[] {
new MoleculeStructureIndexSesameSync(btreeFactory.createQuinBTree(handler, "spomd" + graphNumber)),
new MoleculeStructureIndexSesameSync(btreeFactory.createQuinBTree(handler, "posmd" + graphNumber)),
new MoleculeStructureIndexSesameSync(btreeFactory.createQuinBTree(handler, "ospmd" + graphNumber)),
new MoleculeStructureIndexSesameSync(btreeFactory.createQuinBTree(handler, "dmspo" + graphNumber)),
};
openStructureIndexes.addAll(asList(indexes));
return indexes;
}
}