1 files changed, 78 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/binding/local/AbstractLocalTargetInvoker.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/binding/local/AbstractLocalTargetInvoker.java
new file mode 100644
index 0000000000..4a06bc8c74
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/binding/local/AbstractLocalTargetInvoker.java
@@ -0,0 +1,78 @@
+/*
+ * 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.core.binding.local;
+
+import java.lang.reflect.InvocationTargetException;
+
+import org.apache.tuscany.spi.wire.Interceptor;
+import org.apache.tuscany.spi.wire.InvocationChain;
+import org.apache.tuscany.spi.wire.InvocationRuntimeException;
+import org.apache.tuscany.spi.wire.Message;
+import org.apache.tuscany.spi.wire.TargetInvoker;
+import org.apache.tuscany.spi.component.WorkContext;
+
+/**
+ * Base class for dispatching to a composite reference using the local binding
+ *
+ * @version $Rev$ $Date$
+ */
+public abstract class AbstractLocalTargetInvoker implements TargetInvoker {
+    protected boolean cacheable;
+
+    public boolean isCacheable() {
+        return cacheable;
+    }
+
+    public void setCacheable(boolean cacheable) {
+        this.cacheable = cacheable;
+    }
+
+    public boolean isOptimizable() {
+        return isCacheable(); // we only need to check if the scopes are correct
+    }
+
+    public Object invokeTarget(final Object payload, short sequence, WorkContext workContext) throws InvocationTargetException {
+        throw new InvocationTargetException(new UnsupportedOperationException());
+    }
+
+    protected Message invoke(InvocationChain chain, TargetInvoker invoker, Message msg) throws Throwable {
+        Interceptor headInterceptor = chain.getHeadInterceptor();
+        if (headInterceptor == null) {
+            try {
+                // short-circuit the dispatch and invoke the target directly
+                if (invoker == null) {
+                    String name = chain.getOperation().getName();
+                    throw new AssertionError("No target invoker [" + name + "]");
+                }
+                return invoker.invoke(msg);
+            } catch (InvocationRuntimeException e) {
+                // the cause was thrown by the target so throw it
+                throw e.getCause();
+            }
+        } else {
+            msg.setTargetInvoker(invoker);
+            return headInterceptor.invoke(msg);
+        }
+    }
+
+    @Override
+    public AbstractLocalTargetInvoker clone() throws CloneNotSupportedException {
+        return (AbstractLocalTargetInvoker) super.clone();
+    }
+}