1 files changed, 126 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/provider/SpringInvoker.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/provider/SpringInvoker.java
new file mode 100644
index 0000000000..ea1d6e6755
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-runtime/src/main/java/org/apache/tuscany/sca/implementation/spring/provider/SpringInvoker.java
@@ -0,0 +1,126 @@
+/*
+ * 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.implementation.spring.provider;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.sca.implementation.spring.SpringBeanElement;
+import org.apache.tuscany.sca.implementation.spring.SpringImplementation;
+import org.apache.tuscany.sca.implementation.spring.context.SpringContextWrapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceUtil;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * Initial implementation of a Spring bean invoker
+ * @version $Rev$ $Date$ 
+ */
+public class SpringInvoker implements Invoker {
+
+    private Method theMethod = null;
+    private Object bean;
+    private SpringBeanElement beanElement;
+    private boolean badInvoker = false;
+
+    private SpringContextWrapper springContext;
+    private Operation operation;
+
+    /**
+     * SpringInvoker constructor
+     * @param component - the Spring component to invoke
+     * @param service - the service to invoke
+     * @param operation - the operation to invoke
+     */
+    public SpringInvoker(RuntimeComponent component,
+                         SpringContextWrapper springContext,
+                         RuntimeComponentService service,
+                         Operation operation) {
+
+        this.springContext = springContext;
+        this.operation = operation;
+
+        // From the component and the service, identify the Spring Bean which is the target
+        SpringImplementation theImplementation = (SpringImplementation)component.getImplementation();
+        beanElement = theImplementation.getBeanFromService(service.getService());
+
+        if (beanElement == null) {
+            badInvoker = true;
+            return;
+        }
+
+    } // end constructor SpringInvoker
+
+    // Lazy-load the method to avoid timing problems with the Spring Context
+    private void setupMethod() throws SpringInvocationException {
+        try {
+            bean = springContext.getBean(beanElement.getId());
+            Class<?> beanClass = bean.getClass();
+            theMethod = JavaInterfaceUtil.findMethod(beanClass, operation);
+            //System.out.println("SpringInvoker - found method " + theMethod.getName() );
+        } catch (NoSuchMethodException e) {
+            throw new SpringInvocationException(e);
+        }
+    }
+
+    private Object doInvoke(Object payload) throws SpringInvocationException {
+        if (theMethod == null)
+            setupMethod();
+
+        if (badInvoker)
+            throw new SpringInvocationException("Spring invoker incorrectly configured");
+        // Invoke the method on the Spring bean using the payload, returning the results
+        try {
+            Object ret;
+
+            if (payload != null && !payload.getClass().isArray()) {
+                ret = theMethod.invoke(bean, payload);
+            } else {
+                ret = theMethod.invoke(bean, (Object[])payload);
+            }
+            return ret;
+        } catch (InvocationTargetException e) {
+            throw new SpringInvocationException("Spring invoker invoke method '" + theMethod.getName() + "' error.",
+                                                e.getCause());
+        } catch (Exception e) {
+            throw new SpringInvocationException("Spring invoker invoke method '" + theMethod.getName() + "' error.", e);
+        }
+
+    } // end method doInvoke
+
+    /**
+     * @param msg the message to invoke on the target bean
+     */
+    public Message invoke(Message msg) {
+        try {
+            Object resp = doInvoke(msg.getBody());
+            msg.setBody(resp);
+        } catch (SpringInvocationException e) {
+            msg.setFaultBody(e.getCause());
+        } catch (Throwable e) {
+            msg.setFaultBody(e);
+        }
+        //System.out.println("Spring Invoker - invoke called");
+        return msg;
+    } // end method invoke
+
+} // end class SpringInvoker