001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.language.xpath; 018 019import javax.xml.namespace.QName; 020import javax.xml.xpath.XPathFactory; 021 022import org.apache.camel.Expression; 023import org.apache.camel.Predicate; 024import org.apache.camel.builder.xml.XPathBuilder; 025import org.apache.camel.support.LanguageSupport; 026 027/** 028 * XPath language. 029 */ 030public class XPathLanguage extends LanguageSupport { 031 private QName resultType; 032 private XPathFactory xpathFactory; 033 private Boolean useSaxon; 034 private String objectModelUri; 035 private Boolean threadSafety; 036 037 public Predicate createPredicate(String expression) { 038 expression = loadResource(expression); 039 040 XPathBuilder builder = XPathBuilder.xpath(expression); 041 configureBuilder(builder); 042 return builder; 043 } 044 045 public Expression createExpression(String expression) { 046 expression = loadResource(expression); 047 048 XPathBuilder builder = XPathBuilder.xpath(expression); 049 configureBuilder(builder); 050 return builder; 051 } 052 053 public QName getResultType() { 054 return resultType; 055 } 056 057 public void setResultType(QName resultType) { 058 this.resultType = resultType; 059 } 060 061 public XPathFactory getXpathFactory() { 062 return xpathFactory; 063 } 064 065 public void setXpathFactory(XPathFactory xpathFactory) { 066 this.xpathFactory = xpathFactory; 067 } 068 069 public void setUseSaxon(Boolean useSaxon) { 070 this.useSaxon = useSaxon; 071 } 072 073 public Boolean getUseSaxon() { 074 return useSaxon; 075 } 076 077 public Boolean isUseSaxon() { 078 return useSaxon != null && useSaxon; 079 } 080 081 public String getObjectModelUri() { 082 return objectModelUri; 083 } 084 085 public void setObjectModelUri(String objectModelUri) { 086 this.objectModelUri = objectModelUri; 087 } 088 089 public Boolean getThreadSafety() { 090 return threadSafety; 091 } 092 093 public void setThreadSafety(Boolean threadSafety) { 094 this.threadSafety = threadSafety; 095 } 096 097 protected void configureBuilder(XPathBuilder builder) { 098 if (threadSafety != null) { 099 builder.setThreadSafety(threadSafety); 100 } 101 if (resultType != null) { 102 builder.setResultQName(resultType); 103 } 104 105 if (isUseSaxon()) { 106 builder.enableSaxon(); 107 } else { 108 if (xpathFactory != null) { 109 builder.setXPathFactory(xpathFactory); 110 } 111 if (objectModelUri != null) { 112 builder.setObjectModelUri(objectModelUri); 113 } 114 } 115 } 116 117 public boolean isSingleton() { 118 return false; 119 } 120}