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The Core Camel Java DSL based router
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.model;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;
import org.apache.camel.Expression;
import org.apache.camel.Predicate;
import org.apache.camel.model.language.ExpressionDefinition;
import org.apache.camel.processor.validation.PredicateValidatingProcessor;
import org.apache.camel.spi.AsPredicate;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.RouteContext;
/**
* Validates a message based on an expression
*
* @version
*/
@Metadata(label = "eip,transformation") @AsPredicate
@XmlRootElement(name = "validate")
@XmlAccessorType(XmlAccessType.FIELD)
public class ValidateDefinition extends NoOutputExpressionNode {
public ValidateDefinition() {
}
public ValidateDefinition(Expression expression) {
super(expression);
}
public ValidateDefinition(Predicate predicate) {
super(predicate);
}
@Override
public String toString() {
return "Validate[" + getExpression() + " -> " + getOutputs() + "]";
}
@Override
public String getShortName() {
return "validate";
}
@Override
public String getLabel() {
return "validate[" + getExpression() + "]";
}
@Override
public PredicateValidatingProcessor createProcessor(RouteContext routeContext) throws Exception {
Predicate pred = getExpression().createPredicate(routeContext);
return new PredicateValidatingProcessor(pred);
}
/**
* Expression to use for validation as a predicate. The expression should return either true or false.
* If returning false the message is invalid and an exception is thrown.
*/
@Override
public void setExpression(ExpressionDefinition expression) {
// override to include javadoc what the expression is used for
super.setExpression(expression);
}
}