/**
* 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.processor.aggregate;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.component.bean.ParameterInfo;
/**
* Method information about the POJO method to call when using the {@link AggregationStrategyBeanAdapter}.
*/
public class AggregationStrategyMethodInfo {
private final Method method;
private final List<ParameterInfo> oldParameters;
private final List<ParameterInfo> newParameters;
@Deprecated
public AggregationStrategyMethodInfo(CamelContext camelContext, Class<?> type, Method method,
List<ParameterInfo> oldParameters, List<ParameterInfo> newParameters) {
this(method, oldParameters, newParameters);
}
public AggregationStrategyMethodInfo(Method method,
List<ParameterInfo> oldParameters,
List<ParameterInfo> newParameters) {
this.method = method;
this.oldParameters = oldParameters;
this.newParameters = newParameters;
}
public Object invoke(Object pojo, Exchange oldExchange, Exchange newExchange) throws Exception {
// evaluate the parameters
List<Object> list = new ArrayList<Object>(oldParameters.size() + newParameters.size());
for (ParameterInfo info : oldParameters) {
if (oldExchange != null) {
Object value = info.getExpression().evaluate(oldExchange, info.getType());
list.add(value);
} else {
// use a null value as oldExchange is null
list.add(null);
}
}
for (ParameterInfo info : newParameters) {
if (newExchange != null) {
Object value = info.getExpression().evaluate(newExchange, info.getType());
list.add(value);
} else {
// use a null value as newExchange is null
list.add(null);
}
}
Object[] args = list.toArray();
return method.invoke(pojo, args);
}
}