/**
* 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.language.mvel;
import java.io.Serializable;
import org.apache.camel.Exchange;
import org.apache.camel.ExpressionEvaluationException;
import org.apache.camel.ExpressionIllegalSyntaxException;
import org.apache.camel.impl.ExpressionSupport;
public class MvelExpression extends ExpressionSupport {
private final String expressionString;
private final Class<?> type;
private final Serializable compiled;
public MvelExpression(MvelLanguage language, String expressionString, Class<?> type) {
this.expressionString = expressionString;
this.type = type;
try {
this.compiled = org.mvel2.MVEL.compileExpression(expressionString);
} catch (Exception e) {
throw new ExpressionIllegalSyntaxException(expressionString, e);
}
}
public static MvelExpression mvel(String expression) {
return new MvelExpression(new MvelLanguage(), expression, Object.class);
}
public <T> T evaluate(Exchange exchange, Class<T> tClass) {
try {
Object value = org.mvel2.MVEL.executeExpression(compiled, new RootObject(exchange));
return exchange.getContext().getTypeConverter().convertTo(tClass, value);
} catch (Exception e) {
throw new ExpressionEvaluationException(this, exchange, e);
}
}
public Object evaluate(Exchange exchange) {
try {
return org.mvel2.MVEL.executeExpression(compiled, new RootObject(exchange));
} catch (Exception e) {
throw new ExpressionEvaluationException(this, exchange, e);
}
}
protected String assertionFailureMessage(Exchange exchange) {
return expressionString;
}
@Override
public String toString() {
return "Mvel[" + expressionString + "]";
}
}