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ActiveMQ example source code file (SelectorParserTest.java)
The ActiveMQ SelectorParserTest.java source code/** * 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.slf4j.Logger; import org.slf4j.LoggerFactory; /** * */ public class SelectorParserTest extends TestCase { private static final Logger LOG = LoggerFactory.getLogger(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 SelectorParser.parse(text); } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ SelectorParserTest.java source code file: |
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