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.model; 018 019import javax.xml.bind.annotation.XmlAccessType; 020import javax.xml.bind.annotation.XmlAccessorType; 021import javax.xml.bind.annotation.XmlRootElement; 022 023import org.apache.camel.Expression; 024import org.apache.camel.Predicate; 025import org.apache.camel.model.language.ExpressionDefinition; 026import org.apache.camel.spi.AsPredicate; 027import org.apache.camel.spi.Metadata; 028 029/** 030 * Validates a message based on an expression 031 */ 032@Metadata(label = "eip,transformation") 033@AsPredicate 034@XmlRootElement(name = "validate") 035@XmlAccessorType(XmlAccessType.FIELD) 036public class ValidateDefinition extends ExpressionNode { 037 038 public ValidateDefinition() { 039 } 040 041 public ValidateDefinition(Expression expression) { 042 super(expression); 043 } 044 045 public ValidateDefinition(Predicate predicate) { 046 super(predicate); 047 } 048 049 @Override 050 public String toString() { 051 return "Validate[" + getExpression() + " -> " + getOutputs() + "]"; 052 } 053 054 @Override 055 public String getShortName() { 056 return "validate"; 057 } 058 059 @Override 060 public String getLabel() { 061 return "validate[" + getExpression() + "]"; 062 } 063 064 /** 065 * Expression to use for validation as a predicate. The expression should 066 * return either <tt>true</tt> or <tt>false</tt>. If returning 067 * <tt>false</tt> the message is invalid and an exception is thrown. 068 */ 069 @Override 070 public void setExpression(ExpressionDefinition expression) { 071 // override to include javadoc what the expression is used for 072 super.setExpression(expression); 073 } 074 075}