/*
 * Copyright 2008 the original author or authors.
 * 
 * Licensed 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.openehealth.ipf.platform.camel.core.closures;

import groovy.lang.Closure;
import groovy.transform.stc.ClosureParams;
import groovy.transform.stc.SimpleType;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;

/**
 * An expression that delegates to a {@link Closure}
 * 
 * @author Martin Krasser
 */
public class DelegatingExpression extends ClosureAdapter<Object> implements Expression {

    public DelegatingExpression(@ClosureParams(value = SimpleType.class, options = { "org.apache.camel.Exchange"})
                                        Closure<Object> closure) {
        super(closure);
    }

	@Override
	public <T> T evaluate(Exchange exchange, Class<T> type) {
        return type.cast(call(exchange));
	}
    
}
