From ebd2a0edbe3564d1a81ccc7535337a22ff3acb14 Mon Sep 17 00:00:00 2001
From: edwardsmj <edwardsmj@13f79535-47bb-0310-9956-ffa450edef68>
Date: Thu, 6 Nov 2008 17:00:16 +0000
Subject: Changes to enable consumers and producers to be connected via
 binding.sca

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@711909 13f79535-47bb-0310-9956-ffa450edef68
---
 .../sca/core/invocation/ConsumerInvokerHelper.java | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 sandbox/event/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ConsumerInvokerHelper.java

(limited to 'sandbox/event/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ConsumerInvokerHelper.java')

diff --git a/sandbox/event/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ConsumerInvokerHelper.java b/sandbox/event/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ConsumerInvokerHelper.java
new file mode 100644
index 0000000000..f83a66d44d
--- /dev/null
+++ b/sandbox/event/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/ConsumerInvokerHelper.java
@@ -0,0 +1,97 @@
+/*
+ * 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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