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/*
* 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.tuscany.sca.core.invocation;
import java.lang.reflect.Method;
import java.util.List;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.apache.tuscany.sca.runtime.EndpointReference;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.assembly.Service;
import org.apache.tuscany.sca.assembly.Consumer;
/**
* Class which provides methods which assist in the invocation of Consumer methods
* @author MikeEdwards
*
*/
public class ConsumerInvokerHelper {
/**
* Returns the name of the Consumer operation for a given event type
* @param Args - the parameters for the method to invoke
* @param wire - the runtime wire involved in the invocation
* @return - the name of the operation - null if no corresponding operation can be found
*/
public static String returnConsumerOperation( Object[] Args, RuntimeWire wire ) {
if( isTargetConsumer( wire ) ) {
Consumer consumer = getTargetConsumer( wire );
String eventType = getEventType( Args[0] );
if( consumer != null ) {
return consumer.getOperationByEventType(eventType);
} // end if
} // end if
return null;
} // end returnConsumerMethod
/**
* Find the event type associated with the argument
* @param arg - the argument
* @return a String containing the event type
*/
static String getEventType( Object arg ) {
Class<?> clazz = arg.getClass();
String name = clazz.getCanonicalName();
// Deal with the case where the argument is some XML holder class (need to look for top level child
// object with some "real class"
// Check if the class is marked with an EventType
org.osoa.sca.annotations.EventType eventType = clazz.getAnnotation(org.osoa.sca.annotations.EventType.class);
if (eventType != null) {
return eventType.name();
} else {
return name;
}// end if
} // end getEventType
/**
* For a wire target that is a consumer, returns the Consumer object
* @param wire - the wire
* @return a Consumer if the wire targets a consumer - otherwise null
*/
static Consumer getTargetConsumer( RuntimeWire wire ) {
return ((Service)wire.getTarget().getContract()).getConsumer();
}
/**
* Determines whether the target of a wire is a Consumer
* @param wire - a runtime wire
* @return - true if the target of the wire is a Consumer, false otherwise
*/
static boolean isTargetConsumer( RuntimeWire wire ) {
Service service = (Service)wire.getTarget().getContract();
return service.isConsumer();
} // end isTargetConsumer
} // end class ConsumerInvokerHelper
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