/*
* 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 com.hp.hpl.jena.tdb.extra ;
import java.util.Iterator ;
import org.apache.jena.atlas.lib.FileOps ;
import org.apache.jena.atlas.logging.LogCtl ;
import com.hp.hpl.jena.query.ReadWrite ;
import com.hp.hpl.jena.sparql.core.Quad ;
import com.hp.hpl.jena.sparql.sse.SSE ;
import com.hp.hpl.jena.tdb.TDBFactory ;
import com.hp.hpl.jena.tdb.base.file.Location ;
import com.hp.hpl.jena.tdb.sys.SystemTDB ;
import com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction ;
import com.hp.hpl.jena.tdb.transaction.Journal ;
import com.hp.hpl.jena.tdb.transaction.JournalControl ;
import com.hp.hpl.jena.tdb.transaction.NodeTableTrans ;
public class T_QuadsObjectIsNull {
// static {
// ARQ.getContext().set(SystemTDB.symFileMode, "direct");
// TDB.getContext().set(TDB.symUnionDefaultGraph, true);
// }
static String DIR = "DBX" ;
static Location location = new Location(DIR) ;
public static void main(String[] args) {
if ( false )
{
LogCtl.enable(SystemTDB.syslog.getName()) ;
LogCtl.enable(Journal.class) ;
LogCtl.enable(JournalControl.class) ;
LogCtl.enable(NodeTableTrans.class) ;
}
if ( false )
{
String journal = "DBX/journal.jrnl" ;
if ( FileOps.exists(journal))
JournalControl.print(journal) ;
}
if ( false ) {
FileOps.ensureDir(DIR) ;
FileOps.clearDirectory(DIR) ;
}
one() ;
}
public static void write(DatasetGraphTransaction dsg, Quad quad)
{
dsg.begin(ReadWrite.WRITE) ;
dsg.add(quad) ;
if ( ! dsg.contains(quad) )
throw new RuntimeException("No quad: "+quad) ;
dsg.commit() ;
dsg.end() ;
}
private static void dump(DatasetGraphTransaction dsg)
{
dsg.begin(ReadWrite.READ);
Iterator<Quad> iter = dsg.find() ;
for ( ; iter.hasNext() ; )
{
Quad q = iter.next() ;
System.out.println(q) ;
}
//RiotWriter.writeNQuads(System.out, dsg) ;
dsg.commit();
dsg.end();
}
public static void one()
{
Quad q1 = SSE.parseQuad("(<g1> <s1> <p1> '1')") ;
Quad q2 = SSE.parseQuad("(<g2> <s2> <p2> '2')") ;
Quad q3 = SSE.parseQuad("(<g3> <s3> <p3> '3')") ;
DatasetGraphTransaction dsg = (DatasetGraphTransaction)TDBFactory.createDatasetGraph(location);
System.out.println("Start") ;
dump(dsg) ;
write(dsg, q1) ;
write(dsg, q2) ;
//write(dsg, q3) ;
System.out.println("Finish") ;
dump(dsg) ;
}
}