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+/*
+ * 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 pojo.provider;
+
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.osoa.sca.ServiceRuntimeException;
+
+import pojo.POJOImplementation;
+
+/**
+ * The model representing a sample CRUD implementation in an SCA assembly model.
+ * The sample CRUD implementation is not a full blown implementation, it only
+ * supports a subset of what a component implementation can support: - a single
+ * fixed service (as opposed to a list of services typed by different
+ * interfaces) - a directory attribute used to specify where a CRUD component is
+ * going to persist resources - no references or properties - no policy intents
+ * or policy sets
+ */
+class POJOImplementationProvider implements ImplementationProvider {
+
+ private POJOImplementation implementation;
+ private Object pojoInstance;
+
+ /**
+ * Constructs a new CRUD implementation.
+ */
+ POJOImplementationProvider(RuntimeComponent component, POJOImplementation implementation) {
+ this.implementation = implementation;
+
+ // Create a new instance of the POJO
+ try {
+ pojoInstance = implementation.getPOJOClass().newInstance();
+ } catch (Exception e) {
+ throw new ServiceRuntimeException(e);
+ }
+ }
+
+ public void start() {
+ try {
+ // Invoke the POJO's init method
+ Method initMethod = implementation.getMethods().get("init");
+ if (initMethod != null) {
+ initMethod.invoke(pojoInstance);
+ }
+ } catch (Exception e) {
+ throw new ServiceRuntimeException(e);
+ }
+ }
+
+ public void stop() {
+ try {
+ // Invoke the POJO's destroy method
+ Method destroyMethod = implementation.getMethods().get("destroy");
+ if (destroyMethod != null) {
+ destroyMethod.invoke(pojoInstance);
+ }
+ } catch (Exception e) {
+ throw new ServiceRuntimeException(e);
+ } finally {
+ pojoInstance = null;
+ }
+ }
+
+ public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
+ Method method = implementation.getMethods().get(operation.getName());
+ POJOImplementationInvoker invoker = new POJOImplementationInvoker(pojoInstance, operation, method);
+ return invoker;
+ }
+
+ public boolean supportsOneWayInvocation() {
+ return false;
+ }
+
+}