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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.language;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import org.apache.camel.CamelContext;
import org.apache.camel.Expression;
import org.apache.camel.Predicate;
import org.apache.camel.builder.SimpleBuilder;
import org.apache.camel.spi.Metadata;
import org.apache.camel.util.ObjectHelper;
/**
* For expressions and predicates using the simple language
*
* @version
*/
@Metadata(label = "language,core,java", title = "Simple")
@XmlRootElement(name = "simple")
@XmlAccessorType(XmlAccessType.FIELD)
public class SimpleExpression extends ExpressionDefinition {
@XmlAttribute(name = "resultType")
private String resultTypeName;
@XmlTransient
private Class resultType;
public SimpleExpression() {
}
public SimpleExpression(String expression) {
super(expression);
}
public SimpleExpression(Expression expression) {
super(expression);
}
public String getLanguage() {
return "simple";
}
public Class getResultType() {
return resultType;
}
/**
* Sets the class of the result type (type from output)
*/
public void setResultType(Class resultType) {
this.resultType = resultType;
}
public String getResultTypeName() {
return resultTypeName;
}
/**
* Sets the class name of the result type (type from output)
*/
public void setResultTypeName(String resultTypeName) {
this.resultTypeName = resultTypeName;
}
@Override
public Expression createExpression(CamelContext camelContext) {
if (resultType == null && resultTypeName != null) {
try {
resultType = camelContext.getClassResolver().resolveMandatoryClass(resultTypeName);
} catch (ClassNotFoundException e) {
throw ObjectHelper.wrapRuntimeCamelException(e);
}
}
String exp = getExpression();
// should be true by default
boolean isTrim = getTrim() == null || getTrim();
if (exp != null && isTrim) {
exp = exp.trim();
}
SimpleBuilder answer = new SimpleBuilder(exp);
answer.setResultType(resultType);
return answer;
}
@Override
public Predicate createPredicate(CamelContext camelContext) {
// SimpleBuilder is also a Predicate
return (Predicate) createExpression(camelContext);
}
}