1 files changed, 104 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-M2/sca/services/containers/container.spring/src/main/java/org/apache/tuscany/container/spring/impl/SpringInvoker.java b/sca-java-1.x/branches/sca-java-M2/sca/services/containers/container.spring/src/main/java/org/apache/tuscany/container/spring/impl/SpringInvoker.java
new file mode 100644
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+++ b/sca-java-1.x/branches/sca-java-M2/sca/services/containers/container.spring/src/main/java/org/apache/tuscany/container/spring/impl/SpringInvoker.java
@@ -0,0 +1,104 @@
+/*
+ * 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.container.spring.impl;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.spi.component.TargetException;
+import org.apache.tuscany.spi.wire.InvocationRuntimeException;
+import org.apache.tuscany.spi.wire.Message;
+import org.apache.tuscany.spi.wire.TargetInvoker;
+
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+
+/**
+ * Dispatches to an operation on a Spring bean. Since Spring manages bean lifecycle and scope through resolution in the
+ * target proxy, the invoker can safely cache the target proxy.
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public class SpringInvoker implements TargetInvoker {
+    private ApplicationContext springContext;
+    // default to true since Spring handles resolution
+    private boolean cacheable = true;
+    private String beanName;
+    private Method method;
+    // caching is thread-safe since Spring handles resolution
+    private Object bean;
+
+    public SpringInvoker(String beanName, Method method, ApplicationContext context) {
+        this.beanName = beanName;
+        this.method = method;
+        springContext = context;
+    }
+
+    public Object invokeTarget(final Object object) throws InvocationTargetException {
+        if (bean == null) {
+            try {
+                bean = springContext.getBean(beanName);
+            } catch (BeansException e) {
+                throw new TargetException(e);
+            }
+        }
+        try {
+            if (object != null && !object.getClass().isArray()) {
+                return method.invoke(bean, object);
+            } else {
+                return method.invoke(bean, (Object[]) object);
+            }
+        } catch (IllegalAccessException e) {
+            throw new InvocationTargetException(e);
+        }
+    }
+
+    public Message invoke(Message msg) throws InvocationRuntimeException {
+        try {
+            Object resp = invokeTarget(msg.getBody());
+            msg.setBody(resp);
+        } catch (InvocationTargetException e) {
+            msg.setBodyWithFault(e.getCause());
+        } catch (Throwable e) {
+            msg.setBodyWithFault(e);
+        }
+        return msg;
+    }
+
+    public boolean isCacheable() {
+        return cacheable;
+    }
+
+    public void setCacheable(boolean cacheable) {
+        this.cacheable = cacheable;
+    }
+
+    public boolean isOptimizable() {
+        return false;
+    }
+
+
+    public SpringInvoker clone() throws CloneNotSupportedException {
+        SpringInvoker invoker = (SpringInvoker) super.clone();
+        invoker.bean = null;
+        return invoker;
+    }
+
+
+}