/**
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 Aug 18, 2010
*/
package com.bigdata.bop.join;
import java.util.Properties;
import junit.framework.TestCase2;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.ap.E;
import com.bigdata.bop.ap.R;
import com.bigdata.journal.BufferMode;
import com.bigdata.journal.ITx;
import com.bigdata.journal.Journal;
import com.bigdata.rdf.spo.DistinctTermAdvancer;
import com.bigdata.relation.accesspath.IAsynchronousIterator;
import com.bigdata.relation.accesspath.ThickAsynchronousIterator;
import com.bigdata.striterator.ChunkedArrayIterator;
/**
* Unit tests for the {@link DistinctTermScanOp} operator.
*
* TODO These tests must be specific to the IV layer. They can not be written
* for a relation whose elements are (String,String) tuples. However, we now
* have test coverage for this at the AST / SPARQL QUERY execution layer.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public class TestDistinctTermScanOp extends TestCase2 {
/**
*
*/
public TestDistinctTermScanOp() {
}
/**
* @param name
*/
public TestDistinctTermScanOp(String name) {
super(name);
}
@Override
public Properties getProperties() {
final Properties p = new Properties(super.getProperties());
p.setProperty(Journal.Options.BUFFER_MODE, BufferMode.Transient
.toString());
return p;
}
static private final String namespace = "ns";
Journal jnl;
@Override
public void setUp() throws Exception {
super.setUp();
jnl = new Journal(getProperties());
loadData(jnl);
}
/**
* Create and populate relation in the {@link #namespace}.
*
* FIXME The {@link DistinctTermAdvancer} is IV specific code. We need to
* use a R(elation) and E(lement) type that use IVs to write this test.
*/
private void loadData(final Journal store) {
// create the relation.
final R rel = new R(store, namespace, ITx.UNISOLATED, new Properties());
rel.create();
// data to insert.
final E[] a = {//
new E("John", "Mary"),//
new E("Mary", "Paul"),//
new E("Paul", "Leon"),//
new E("Leon", "Paul"),//
new E("Mary", "John"),//
};
// insert data (the records are not pre-sorted).
rel.insert(new ChunkedArrayIterator<E>(a.length, a, null/* keyOrder */));
// Do commit since not scale-out.
store.commit();
}
@Override
public void tearDown() throws Exception {
if (jnl != null) {
jnl.destroy();
jnl = null;
}
super.tearDown();
}
/**
* Return an {@link IAsynchronousIterator} that will read a single
* {@link IBindingSet}.
*
* @param bindingSet
* the binding set.
*/
protected ThickAsynchronousIterator<IBindingSet[]> newBindingSetIterator(
final IBindingSet bindingSet) {
return new ThickAsynchronousIterator<IBindingSet[]>(
new IBindingSet[][] { new IBindingSet[] { bindingSet } });
}
// /**
// * Unit test corresponding to
// *
// * <pre>
// * SELECT DISTINCT ?x { ("Mary",?X) }
// * </pre>
// */
// public void test_distinctTermScan_01()
// throws InterruptedException, ExecutionException {
//
// final int joinId = 2;
// final int predId = 3;
//
// final Predicate<E> predOp = new Predicate<E>(new IVariableOrConstant[] {
// new Constant<String>("Mary"), Var.var("x") }, NV
// .asMap(new NV[] {//
// new NV(Predicate.Annotations.RELATION_NAME,
// new String[] { namespace }),//
// new NV(Predicate.Annotations.BOP_ID, predId),//
// new NV(Annotations.TIMESTAMP,
// ITx.READ_COMMITTED),//
// }));
//
// final DistinctTermScanOp<E> query = new DistinctTermScanOp<E>(
// new BOp[] {},// args
// new NV(DistinctTermScanOp.Annotations.BOP_ID, joinId),//
// new NV(DistinctTermScanOp.Annotations.PREDICATE, predOp),//
// new NV(DistinctTermScanOp.Annotations.DISTINCT_VAR, Var.var("x"))//
// );
//
// // the expected solutions.
// final IBindingSet[] expected = new IBindingSet[] {//
// new ListBindingSet(//
// new IVariable[] { Var.var("x") },//
// new IConstant[] { new Constant<String>("Paul") }//
// ),//
// new ListBindingSet(//
// new IVariable[] { Var.var("x") },//
// new IConstant[] { new Constant<String>("John") }//
// ),//
// };
//
// final BOpStats stats = query.newStats();
//
// final IAsynchronousIterator<IBindingSet[]> source = new ThickAsynchronousIterator<IBindingSet[]>(
// new IBindingSet[][] { new IBindingSet[] { new ListBindingSet()} });
//
// final IBlockingBuffer<IBindingSet[]> sink = new BlockingBufferWithStats<IBindingSet[]>(query, stats);
//
// final BOpContext<IBindingSet> context = new BOpContext<IBindingSet>(
// new MockRunningQuery(null/* fed */, jnl/* indexManager */
// ), -1/* partitionId */, stats,query/* op */,
// false/* lastInvocation */,
// source, sink, null/* sink2 */);
//
// // get task.
// final FutureTask<Void> ft = query.eval(context);
//
// // execute task.
// jnl.getExecutorService().execute(ft);
//
// AbstractQueryEngineTestCase.assertSameSolutionsAnyOrder(expected, sink.iterator(),
// ft);
//
// // join task
// assertEquals(1L, stats.chunksIn.get());
// assertEquals(1L, stats.unitsIn.get());
// assertEquals(2L, stats.unitsOut.get());
// assertEquals(1L, stats.chunksOut.get());
//
// }
}