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 */ 017 package org.apache.camel.language.xpath; 018 019 import javax.xml.namespace.QName; 020 import javax.xml.xpath.XPathFactory; 021 022 import org.apache.camel.Expression; 023 import org.apache.camel.Predicate; 024 import org.apache.camel.builder.xml.XPathBuilder; 025 import org.apache.camel.support.LanguageSupport; 026 027 /** 028 * XPath language. 029 */ 030 public class XPathLanguage extends LanguageSupport { 031 private QName resultType; 032 private XPathFactory xpathFactory; 033 private Boolean useSaxon; 034 private String objectModelUri; 035 036 public Predicate createPredicate(String expression) { 037 expression = loadResource(expression); 038 039 XPathBuilder builder = XPathBuilder.xpath(expression); 040 configureBuilder(builder); 041 return builder; 042 } 043 044 public Expression createExpression(String expression) { 045 expression = loadResource(expression); 046 047 XPathBuilder builder = XPathBuilder.xpath(expression); 048 configureBuilder(builder); 049 return builder; 050 } 051 052 public QName getResultType() { 053 return resultType; 054 } 055 056 public void setResultType(QName resultType) { 057 this.resultType = resultType; 058 } 059 060 public XPathFactory getXpathFactory() { 061 return xpathFactory; 062 } 063 064 public void setXpathFactory(XPathFactory xpathFactory) { 065 this.xpathFactory = xpathFactory; 066 } 067 068 public void setUseSaxon(Boolean useSaxon) { 069 this.useSaxon = useSaxon; 070 } 071 072 public Boolean getUseSaxon() { 073 return useSaxon; 074 } 075 076 public Boolean isUseSaxon() { 077 return useSaxon != null && useSaxon; 078 } 079 080 public String getObjectModelUri() { 081 return objectModelUri; 082 } 083 084 public void setObjectModelUri(String objectModelUri) { 085 this.objectModelUri = objectModelUri; 086 } 087 088 protected void configureBuilder(XPathBuilder builder) { 089 if (resultType != null) { 090 builder.setResultQName(resultType); 091 } 092 093 if (isUseSaxon()) { 094 builder.enableSaxon(); 095 } else { 096 if (xpathFactory != null) { 097 builder.setXPathFactory(xpathFactory); 098 } 099 if (objectModelUri != null) { 100 builder.setObjectModelUri(objectModelUri); 101 } 102 } 103 } 104 105 public boolean isSingleton() { 106 return false; 107 } 108 }