svn commit: r430728 - /incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java

[an...@apache.org]

Author: antelder
Date: Fri Aug 11 02:01:47 2006
New Revision: 430728

URL: http://svn.apache.org/viewvc?rev=430728&view=rev
Log:
Add an SPI extension class to simplify implementing a TargetInvoker 

Added:
    incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java

Added: incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java
URL: http://svn.apache.org/viewvc/incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java?rev=430728&view=auto
==============================================================================
--- incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java (added)
+++ incubator/tuscany/java/sca/spi/src/main/java/org/apache/tuscany/spi/extension/TargetInvokerExtension.java Fri Aug 11 02:01:47 2006
@@ -0,0 +1,63 @@
+/**
+ *
+ * Copyright 2006 The Apache Software Foundation or its licensors as applicable
+ *
+ *  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.apache.tuscany.spi.extension;
+
+import java.lang.reflect.InvocationTargetException;
+
+import org.apache.tuscany.spi.wire.InvocationRuntimeException;
+import org.apache.tuscany.spi.wire.Message;
+import org.apache.tuscany.spi.wire.TargetInvoker;
+
+/**
+ * The default implementation of a TargetInvoker
+ */
+public abstract class TargetInvokerExtension implements TargetInvoker {
+
+    private boolean cacheable;
+    
+    public TargetInvokerExtension() {
+    }
+
+    public Message invoke(Message msg) throws InvocationRuntimeException {
+        try {
+            Object resp = invokeTarget(msg.getBody());
+            msg.setBody(resp);
+        } catch (InvocationTargetException e) {
+            msg.setBody(e.getCause());
+        }
+        return msg;
+    }
+
+    public boolean isCacheable() {
+        return cacheable;
+    }
+
+    public void setCacheable(boolean cacheable) {
+        this.cacheable = cacheable;
+    }
+
+    public boolean isOptimizable() {
+        return isCacheable();
+    }
+    
+    public Object clone() throws CloneNotSupportedException {
+        TargetInvokerExtension clonedInvoker = (TargetInvokerExtension) super.clone();
+        clonedInvoker.cacheable = this.cacheable;
+        return clonedInvoker;
+    }
+
+}



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