/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Mar 16, 2012
*/
package com.bigdata.bop.rdf.update;
import java.beans.Statement;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
import com.bigdata.bop.BOp;
import com.bigdata.bop.BOpContext;
import com.bigdata.bop.IBindingSet;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.internal.IVCache;
import com.bigdata.rdf.spo.ISPO;
import com.bigdata.rdf.store.AbstractTripleStore;
/**
* Vectored insert operator for RDF Statements. The solutions flowing through
* this operator MUST bind the <code>s</code>, <code>p</code>, <code>o</code>,
* and (depending on the database mode) MAY bind the <code>c</code> variable.
* Those variables correspond to the Subject, Predicate, Object, and
* Context/Graph position of an RDF {@link Statement} respectively. On input,
* the variables must be real {@link IV}s. The {@link IVCache} does NOT need to
* be set. The output is an empty solution.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public final class InsertStatementsOp extends AbstractAddRemoveStatementsOp {
public InsertStatementsOp(final BOp[] args,
final Map<String, Object> annotations) {
super(args, annotations);
}
public InsertStatementsOp(final InsertStatementsOp op) {
super(op);
}
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public FutureTask<Void> eval(final BOpContext<IBindingSet> context) {
return new FutureTask<Void>(new ChunkTask(context, this));
}
static private class ChunkTask implements Callable<Void> {
private final BOpContext<IBindingSet> context;
private final AbstractTripleStore tripleStore;
private final boolean sids;
private final boolean quads;
public ChunkTask(final BOpContext<IBindingSet> context,
final InsertStatementsOp op) {
this.context = context;
final String namespace = ((String[]) op
.getRequiredProperty(Annotations.RELATION_NAME))[0];
final long timestamp = (Long) op
.getRequiredProperty(Annotations.TIMESTAMP);
this.tripleStore = (AbstractTripleStore) context.getResource(
namespace, timestamp);
this.sids = tripleStore.isStatementIdentifiers();
this.quads = tripleStore.isQuads();
}
@Override
public Void call() throws Exception {
final boolean bindsC = sids | quads;
// Build set of distinct ISPOs.
final Set<ISPO> b = acceptSolutions(context, bindsC);
// Convert into array.
final ISPO[] stmts = b.toArray(new ISPO[b.size()]);
// Write on the database.
final long nmodified = tripleStore.addStatements(stmts,
stmts.length);
// Increment by the #of statements written.
context.getStats().mutationCount.add(nmodified);
// done.
return null;
}
} // ChunkTask
} // InsertStatements