/*
* 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 org.apache.jackrabbit.core.query;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.RepositoryException;
import javax.jcr.query.Query;
import javax.jcr.query.QueryResult;
import org.apache.jackrabbit.api.query.JackrabbitQueryResult;
public class LimitAndOffsetTest extends AbstractQueryTest {
private Node node1;
private Node node2;
private Node node3;
private Query query;
protected void setUp() throws Exception {
super.setUp();
node1 = testRootNode.addNode("foo");
node1.setProperty("name", "1");
node2 = testRootNode.addNode("bar");
node2.setProperty("name", "2");
node3 = testRootNode.addNode("baz");
node3.setProperty("name", "3");
testRootNode.getSession().save();
query = qm.createQuery("/jcr:root" + testRoot + "/* order by @name",
Query.XPATH);
}
protected void tearDown() throws Exception {
node1 = null;
node2 = null;
node3 = null;
query = null;
super.tearDown();
}
protected void checkResult(QueryResult result, Node[] expectedNodes) throws RepositoryException {
assertEquals(expectedNodes.length, result.getNodes().getSize());
}
public void testLimit() throws Exception {
query.setLimit(1);
QueryResult result = query.execute();
checkResult(result, new Node[] { node1 });
query.setLimit(2);
result = query.execute();
checkResult(result, new Node[] { node1, node2 });
query.setLimit(3);
result = query.execute();
checkResult(result, new Node[] { node1, node2, node3 });
}
public void testOffset() throws Exception {
query.setOffset(0);
QueryResult result = query.execute();
checkResult(result, new Node[] { node1, node2, node3 });
query.setOffset(1);
result = query.execute();
checkResult(result, new Node[] { node2, node3 });
query.setOffset(2);
result = query.execute();
checkResult(result, new Node[] { node3 });
}
public void testOffsetAndLimit() throws Exception {
query.setOffset(0);
query.setLimit(1);
QueryResult result = query.execute();
checkResult(result, new Node[] { node1 });
query.setOffset(1);
query.setLimit(1);
result = query.execute();
checkResult(result, new Node[] { node2 });
query.setOffset(1);
query.setLimit(2);
result = query.execute();
checkResult(result, new Node[] { node2, node3 });
query.setOffset(0);
query.setLimit(2);
result = query.execute();
checkResult(result, new Node[] { node1, node2 });
// Added for JCR-1323
query.setOffset(0);
query.setLimit(4);
result = query.execute();
checkResult(result, new Node[] { node1, node2, node3 });
}
public void testOffsetAndSkip() throws Exception {
query.setOffset(1);
QueryResult result = query.execute();
NodeIterator nodes = result.getNodes();
nodes.skip(1);
assertTrue(node3.isSame(nodes.nextNode()));
}
public void testOffsetAndLimitWithGetSize() throws Exception {
query.setOffset(1);
QueryResult result = query.execute();
NodeIterator nodes = result.getNodes();
assertEquals(2, nodes.getSize());
if (result instanceof JackrabbitQueryResult) {
assertEquals(3, ((JackrabbitQueryResult) result).getTotalSize());
}
// JCR-2684: offset higher than total result => size == 0
query.setOffset(10);
result = query.execute();
nodes = result.getNodes();
assertFalse(nodes.hasNext());
assertEquals(0, nodes.getSize());
if (result instanceof JackrabbitQueryResult) {
assertEquals(3, ((JackrabbitQueryResult) result).getTotalSize());
}
query.setOffset(1);
query.setLimit(1);
result = query.execute();
nodes = result.getNodes();
assertEquals(1, nodes.getSize());
}
}