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Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.
/*
(c) Copyright 2007, 2008 Hewlett-Packard Development Company, LP
All rights reserved.
$Id: TestUnionStatistics.java,v 1.2 2008/01/02 12:07:21 andy_seaborne Exp $
*/
package com.hp.hpl.jena.graph.compose.test;
import com.hp.hpl.jena.graph.*;
import com.hp.hpl.jena.graph.compose.MultiUnion;
import com.hp.hpl.jena.graph.impl.GraphBase;
import com.hp.hpl.jena.graph.test.GraphTestBase;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
public class TestUnionStatistics extends GraphTestBase
{
public TestUnionStatistics( String name )
{ super( name ); }
static class AnInteger
{
public int value = 0;
public AnInteger( int value )
{ this.value = value; }
}
public void testUnionValues()
{
testUnion( 0, 0, 0, 0 );
}
public void testCopiesSingleNonZeroResult()
{
testUnion( 1, 1, 0, 0 );
testUnion( 1, 0, 1, 0 );
testUnion( 1, 0, 0, 1 );
testUnion( 1, 1, 0, 0 );
testUnion( 2, 0, 2, 0 );
testUnion( 4, 0, 0, 4 );
}
public void testResultIsSumOfBaseResults()
{
testUnion( 3, 1, 2, 0 );
testUnion( 5, 1, 0, 4 );
testUnion( 6, 0, 2, 4 );
testUnion( 7, 1, 2, 4 );
testUnion( 3, 0, 2, 1 );
testUnion( 5, 4, 1, 0 );
testUnion( 6, 2, 2, 2 );
testUnion( 7, 6, 0, 1 );
}
public void testUnknownOverrulesAll()
{
testUnion( -1, -1, 0, 0 );
testUnion( -1, 0, -1, 0 );
testUnion( -1, 0, 0, -1 );
testUnion( -1, -1, 1, 1 );
testUnion( -1, 1, -1, 1 );
testUnion( -1, 1, 1, -1 );
}
/**
Asserts that the statistic obtained by probing the three-element union
with statistics av
, bv
, and
cv
is expected
.
*/
private void testUnion( int expected, int av, int bv, int cv )
{
AnInteger a = new AnInteger( av ), b = new AnInteger( bv ), c = new AnInteger( cv );
Graph g1 = graphWithGivenStatistic( a );
Graph g2 = graphWithGivenStatistic( b );
Graph g3 = graphWithGivenStatistic( c );
Graph [] graphs = new Graph[]{g1, g2, g3};
MultiUnion mu = new MultiUnion( graphs );
GraphStatisticsHandler gs = new MultiUnion.MultiUnionStatisticsHandler( mu );
assertEquals( expected, gs.getStatistic( Node.ANY, Node.ANY, Node.ANY ) );
}
static Graph graphWithGivenStatistic( final AnInteger x )
{
return new GraphBase()
{
protected ExtendedIterator graphBaseFind( TripleMatch m )
{
throw new RuntimeException( "should never be called" );
}
protected GraphStatisticsHandler createStatisticsHandler()
{
return new GraphStatisticsHandler()
{
public long getStatistic( Node S, Node P, Node O )
{ return x.value; }
};
}
};
}
}
/*
* (c) Copyright 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
* 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 name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
*/