/**
* 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.activemq.selector;
import junit.framework.TestCase;
import org.apache.activemq.filter.BooleanExpression;
import org.apache.activemq.filter.ComparisonExpression;
import org.apache.activemq.filter.Expression;
import org.apache.activemq.filter.LogicExpression;
import org.apache.activemq.filter.PropertyExpression;
import org.apache.activemq.filter.XPathExpression;
import org.apache.activemq.spring.ConsumerBean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @version $Revision: 1.2 $
*/
public class SelectorParserTest extends TestCase {
private static final Log LOG = LogFactory.getLog(SelectorParserTest.class);
public void testParseXPath() throws Exception {
BooleanExpression filter = parse("XPATH '//title[@lang=''eng'']'");
assertTrue("Created XPath expression", filter instanceof XPathExpression);
LOG.info("Expression: " + filter);
}
public void testParseWithParensAround() throws Exception {
String[] values = {"x = 1 and y = 2", "(x = 1) and (y = 2)", "((x = 1) and (y = 2))"};
for (int i = 0; i < values.length; i++) {
String value = values[i];
LOG.info("Parsing: " + value);
BooleanExpression andExpression = parse(value);
assertTrue("Created LogicExpression expression", andExpression instanceof LogicExpression);
LogicExpression logicExpression = (LogicExpression)andExpression;
Expression left = logicExpression.getLeft();
Expression right = logicExpression.getRight();
assertTrue("Left is a binary filter", left instanceof ComparisonExpression);
assertTrue("Right is a binary filter", right instanceof ComparisonExpression);
ComparisonExpression leftCompare = (ComparisonExpression)left;
ComparisonExpression rightCompare = (ComparisonExpression)right;
assertPropertyExpression("left", leftCompare.getLeft(), "x");
assertPropertyExpression("right", rightCompare.getLeft(), "y");
}
}
protected void assertPropertyExpression(String message, Expression expression, String expected) {
assertTrue(message + ". Must be PropertyExpression", expression instanceof PropertyExpression);
PropertyExpression propExp = (PropertyExpression)expression;
assertEquals(message + ". Property name", expected, propExp.getName());
}
protected BooleanExpression parse(String text) throws Exception {
return new SelectorParser().parse(text);
}
}