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.model;
018
019 import javax.xml.bind.annotation.XmlAccessType;
020 import javax.xml.bind.annotation.XmlAccessorType;
021 import javax.xml.bind.annotation.XmlAttribute;
022 import javax.xml.bind.annotation.XmlRootElement;
023
024 import org.apache.camel.Expression;
025 import org.apache.camel.Processor;
026 import org.apache.camel.builder.ExpressionBuilder;
027 import org.apache.camel.builder.ExpressionClause;
028 import org.apache.camel.builder.ProcessorBuilder;
029 import org.apache.camel.model.language.ExpressionDefinition;
030 import org.apache.camel.spi.RouteContext;
031 import org.apache.camel.util.ObjectHelper;
032
033 /**
034 * Represents an XML <setHeader/> element
035 */
036 @XmlRootElement(name = "setHeader")
037 @XmlAccessorType(XmlAccessType.FIELD)
038 public class SetHeaderDefinition extends ExpressionNode {
039 @XmlAttribute(required = true)
040 private String headerName;
041
042 public SetHeaderDefinition() {
043 }
044
045 public SetHeaderDefinition(String headerName, ExpressionDefinition expression) {
046 super(expression);
047 setHeaderName(headerName);
048 }
049
050 public SetHeaderDefinition(String headerName, Expression expression) {
051 super(expression);
052 setHeaderName(headerName);
053 }
054
055 public SetHeaderDefinition(String headerName, String value) {
056 super(ExpressionBuilder.constantExpression(value));
057 setHeaderName(headerName);
058 }
059
060 @Override
061 public String toString() {
062 return "SetHeader[" + getHeaderName() + ", " + getExpression() + "]";
063 }
064
065 @Override
066 public String getShortName() {
067 return "setHeader";
068 }
069
070 @Override
071 public Processor createProcessor(RouteContext routeContext) throws Exception {
072 ObjectHelper.notNull(headerName, "headerName");
073 Expression expr = getExpression().createExpression(routeContext);
074 return ProcessorBuilder.setHeader(getHeaderName(), expr);
075 }
076
077 public void setHeaderName(String headerName) {
078 this.headerName = headerName;
079 }
080
081 public String getHeaderName() {
082 return headerName;
083 }
084
085 // Fluent API
086 //-------------------------------------------------------------------------
087 /**
088 * Set the expression that SetHeaderType will use
089 * @return the builder
090 */
091 public ExpressionClause<SetHeaderDefinition> expression() {
092 return ExpressionClause.createAndSetExpression(this);
093 }
094 }