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 java.util.Collections; 020 import java.util.List; 021 import javax.xml.bind.annotation.XmlAccessType; 022 import javax.xml.bind.annotation.XmlAccessorType; 023 024 import org.apache.camel.Expression; 025 import org.apache.camel.Predicate; 026 import org.apache.camel.model.language.ExpressionDefinition; 027 028 /** 029 * An {@link org.apache.camel.model.ExpressionNode} which does <b>not</b> support any outputs. 030 * <p/> 031 * This node is to be extended by definitions which need to support an expression but the definition should not 032 * contain any outputs, such as {@link org.apache.camel.model.TransformDefinition}. 033 * 034 * @version 035 */ 036 @XmlAccessorType(XmlAccessType.FIELD) 037 public class NoOutputExpressionNode extends ExpressionNode { 038 039 public NoOutputExpressionNode() { 040 } 041 042 public NoOutputExpressionNode(ExpressionDefinition expression) { 043 super(expression); 044 } 045 046 public NoOutputExpressionNode(Expression expression) { 047 super(expression); 048 } 049 050 public NoOutputExpressionNode(Predicate predicate) { 051 super(predicate); 052 } 053 054 @Override 055 public List<ProcessorDefinition<?>> getOutputs() { 056 return Collections.emptyList(); 057 } 058 059 @Override 060 public boolean isOutputSupported() { 061 return false; 062 } 063 064 @Override 065 public void addOutput(ProcessorDefinition<?> output) { 066 // add it to the parent as we do not support outputs 067 getParent().addOutput(output); 068 } 069 070 @Override 071 public ExpressionNode id(String id) { 072 // let parent handle assigning the id, as we do not support outputs 073 getParent().id(id); 074 return this; 075 } 076 } 077