| /* |
| * 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.invocation; |
| |
| 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.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 SpringContextStub 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, |
| SpringContextStub 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 |