/*
* 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.graph.test;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import junit.framework.TestSuite;
import com.hp.hpl.jena.graph.Factory;
import com.hp.hpl.jena.graph.Graph;
import com.hp.hpl.jena.graph.GraphEvents;
import com.hp.hpl.jena.graph.GraphListener;
import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.graph.impl.SimpleBulkUpdateHandler;
import com.hp.hpl.jena.mem.GraphMem ;
import com.hp.hpl.jena.shared.ReificationStyle;
/**
* Version of graph tests that set up a listener that copies all changes
* and verifies that after every notification modified graph
* and original are isomorphic.
* @author Jeremy Carroll
*
*/
public class TestGraphListener extends MetaTestGraph {
public TestGraphListener(String name) {
super(name);
}
public TestGraphListener( Class<? extends Graph> graphClass, String name, ReificationStyle style )
{ super( graphClass, name, style ); }
public static TestSuite suite()
{ return MetaTestGraph.suite( TestGraphListener.class, GraphMem.class ); }
/**
* A listener to check that a graph is being tracked
* correctly by its events.
* @author Jeremy
*
*/
protected class CheckChanges implements GraphListener {
protected Graph copy, original;
final String desc;
public CheckChanges(String description, Graph g) {
original = g;
desc = description;
copy = TestGraphListener.super.getGraph();
}
protected void verify() {
assertIsomorphic(desc+" has not been tracked correctly. [delegating,copy-from-listener]",
original,copy
);
}
@Override
public void notifyAddIterator(Graph g, Iterator<Triple> it) {
while (it.hasNext()) copy.add(it.next());
verify();
}
@Override
public void notifyAddTriple(Graph g, Triple t) {
copy.add(t);
verify();
}
@Override
public void notifyDeleteIterator(Graph g, Iterator<Triple> it) {
while (it.hasNext()) copy.delete(it.next());
verify();
}
@Override
public void notifyDeleteTriple(Graph g, Triple t) {
copy.delete(t);
verify();
}
@Override
public void notifyEvent(Graph source, Object value) {
if (value instanceof GraphEvents) {
if (GraphEvents.removeAll.equals(value)) {
notifyRemoveAll(source,Triple.ANY);
} else {
GraphEvents event = (GraphEvents)value;
if ("remove".equals(event.getTitle())) {
notifyRemoveAll(source,(Triple)event.getContent());
}
}
}
verify();
}
public void notifyRemoveAll(Graph source, Triple t) {
SimpleBulkUpdateHandler.removeAll(copy, t.getSubject(), t.getPredicate(), t.getObject());
verify();
}
@Override
public void notifyAddList(Graph g, List<Triple> triples) {
notifyAddIterator(g, triples.iterator());
}
@Override
public void notifyDeleteArray(Graph g, Triple[] triples) {
notifyDeleteIterator(g,Arrays.asList(triples).iterator());
}
@Override
public void notifyAddArray(Graph g, Triple[] triples) {
notifyAddIterator(g,Arrays.asList(triples).iterator());
}
@Override
public void notifyAddGraph(Graph g, Graph added) {
notifyAddIterator(g,added.find(Triple.ANY));
}
@Override
public void notifyDeleteGraph(Graph g, Graph removed) {
notifyDeleteIterator(g,removed.find(Triple.ANY));
}
@Override
public void notifyDeleteList(Graph g, List<Triple> list) {
notifyDeleteIterator(g, list.iterator());
}
}
@Override
public Graph getGraph() {
Graph g = Factory.createGraphMem();
g.getEventManager().register(new CheckChanges("simple tracking",g));
return g;
}
}