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.builder; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Expression; 021 import org.apache.camel.Processor; 022 023 /** 024 * A builder of a number of different {@link Processor} implementations 025 * 026 * @version $Revision: 751655 $ 027 */ 028 public final class ProcessorBuilder { 029 030 /** 031 * Utility classes should not have a public constructor. 032 */ 033 private ProcessorBuilder() { 034 } 035 036 /** 037 * Creates a processor which sets the body of the IN message to the value of the expression 038 */ 039 public static Processor setBody(final Expression expression) { 040 return new Processor() { 041 public void process(Exchange exchange) { 042 Object newBody = expression.evaluate(exchange); 043 exchange.getIn().setBody(newBody); 044 } 045 046 @Override 047 public String toString() { 048 return "setBody(" + expression + ")"; 049 } 050 }; 051 } 052 053 /** 054 * Creates a processor which sets the body of the OUT message to the value of the expression 055 */ 056 public static Processor setOutBody(final Expression expression) { 057 return new Processor() { 058 public void process(Exchange exchange) { 059 Object newBody = expression.evaluate(exchange); 060 exchange.getOut().setBody(newBody); 061 } 062 063 @Override 064 public String toString() { 065 return "setOutBody(" + expression + ")"; 066 } 067 }; 068 } 069 070 /** 071 * Creates a processor which sets the body of the FAULT message to the value of the expression 072 */ 073 public static Processor setFaultBody(final Expression expression) { 074 return new Processor() { 075 public void process(Exchange exchange) { 076 Object newBody = expression.evaluate(exchange); 077 exchange.getFault().setBody(newBody); 078 } 079 080 @Override 081 public String toString() { 082 return "setFaultBody(" + expression + ")"; 083 } 084 }; 085 } 086 087 /** 088 * Sets the header on the IN message 089 */ 090 public static Processor setHeader(final String name, final Expression expression) { 091 return new Processor() { 092 public void process(Exchange exchange) { 093 Object value = expression.evaluate(exchange); 094 exchange.getIn().setHeader(name, value); 095 } 096 097 @Override 098 public String toString() { 099 return "setHeader(" + name + ", " + expression + ")"; 100 } 101 }; 102 } 103 104 /** 105 * Sets the header on the OUT message 106 */ 107 public static Processor setOutHeader(final String name, final Expression expression) { 108 return new Processor() { 109 public void process(Exchange exchange) { 110 Object value = expression.evaluate(exchange); 111 exchange.getOut().setHeader(name, value); 112 } 113 114 @Override 115 public String toString() { 116 return "setOutHeader(" + name + ", " + expression + ")"; 117 } 118 }; 119 } 120 121 /** 122 * Sets the header on the FAULT message 123 */ 124 public static Processor setFaultHeader(final String name, final Expression expression) { 125 return new Processor() { 126 public void process(Exchange exchange) { 127 Object value = expression.evaluate(exchange); 128 exchange.getFault().setHeader(name, value); 129 } 130 131 @Override 132 public String toString() { 133 return "setFaultHeader(" + name + ", " + expression + ")"; 134 } 135 }; 136 } 137 138 /** 139 * Sets the property on the exchange 140 */ 141 public static Processor setProperty(final String name, final Expression expression) { 142 return new Processor() { 143 public void process(Exchange exchange) { 144 Object value = expression.evaluate(exchange); 145 exchange.setProperty(name, value); 146 } 147 148 @Override 149 public String toString() { 150 return "setProperty(" + name + ", " + expression + ")"; 151 } 152 }; 153 } 154 155 /** 156 * Removes the header on the IN message 157 */ 158 public static Processor removeHeader(final String name) { 159 return new Processor() { 160 public void process(Exchange exchange) { 161 exchange.getIn().removeHeader(name); 162 } 163 164 @Override 165 public String toString() { 166 return "removeHeader(" + name + ")"; 167 } 168 }; 169 } 170 171 /** 172 * Removes the header on the FAULT message 173 */ 174 public static Processor removeFaultHeader(final String name) { 175 return new Processor() { 176 public void process(Exchange exchange) { 177 exchange.getFault().removeHeader(name); 178 } 179 180 @Override 181 public String toString() { 182 return "removeFaultHeader(" + name + ")"; 183 } 184 }; 185 } 186 187 /** 188 * Removes the property on the exchange 189 */ 190 public static Processor removeProperty(final String name) { 191 return new Processor() { 192 public void process(Exchange exchange) { 193 exchange.removeProperty(name); 194 } 195 196 @Override 197 public String toString() { 198 return "removeProperty(" + name + ")"; 199 } 200 }; 201 } 202 203 /** 204 * Throws an exception 205 */ 206 public static Processor throwException(final Exception ex) { 207 return new Processor() { 208 public void process(Exchange exchange) throws Exception { 209 throw ex; 210 } 211 212 @Override 213 public String toString() { 214 return "throwException(" + ex.toString() + ")"; 215 } 216 }; 217 } 218 }