/**
*
* Copyright 2004 Protique Ltd
*
* Licensed 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.activemq.selector;
import junit.framework.TestCase;
import org.activemq.filter.ComparisonExpression;
import org.activemq.filter.Expression;
import org.activemq.filter.ExpressionFilter;
import org.activemq.filter.Filter;
import org.activemq.filter.LogicExpression;
import org.activemq.filter.PropertyExpression;
import org.activemq.filter.XPathExpression;
/**
* @version $Revision: 1.1.1.1 $
*/
public class SelectorParserTest extends TestCase {
public void testParseXPath() throws Exception {
Filter filter = parse("XPATH '//title[@lang=''eng'']'");
assertTrue("Created ExpressionFilter filter", filter instanceof ExpressionFilter);
Expression xpathExpression = ((ExpressionFilter) filter).getExpression();
assertTrue("Created XPath expression", xpathExpression instanceof XPathExpression);
System.out.println("Expression: "+xpathExpression);
}
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];
System.out.println("Parsing: " + value);
Filter filter = parse(value);
assertTrue("Created ExpressionFilter filter", filter instanceof ExpressionFilter);
Expression andExpression = ((ExpressionFilter) filter).getExpression();
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 Filter parse(String text) throws Exception {
return new SelectorParser().parse(text);
}
}