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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 org.apache.tuscany.core.implementation.processor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Set;
import org.osoa.sca.annotations.Callback;
import org.osoa.sca.annotations.Remotable;
import org.apache.tuscany.spi.annotation.Autowire;
import org.apache.tuscany.spi.component.CompositeComponent;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.idl.InvalidServiceContractException;
import org.apache.tuscany.spi.implementation.java.ImplementationProcessorExtension;
import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
import org.apache.tuscany.spi.implementation.java.JavaMappedReference;
import org.apache.tuscany.spi.implementation.java.JavaMappedService;
import org.apache.tuscany.spi.implementation.java.PojoComponentType;
import org.apache.tuscany.spi.implementation.java.ProcessingException;
import org.apache.tuscany.spi.implementation.java.ImplementationProcessorService;
import org.apache.tuscany.spi.model.ServiceContract;
import static org.apache.tuscany.core.util.JavaIntrospectionHelper.getAllInterfaces;
import static org.apache.tuscany.core.util.JavaIntrospectionHelper.toPropertyName;
/**
* Processes an {@link org.osoa.sca.annotations.Service} annotation and updates the component type with corresponding
* {@link JavaMappedService}s. Also processes related {@link org.osoa.sca.annotations.Callback} annotations.
*
* @version $Rev$ $Date$
*/
public class ServiceProcessor extends ImplementationProcessorExtension {
private ImplementationProcessorService implService;
public ServiceProcessor(@Autowire ImplementationProcessorService implService) {
this.implService = implService;
}
public <T> void visitClass(CompositeComponent parent, Class<T> clazz,
PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type,
DeploymentContext context) throws ProcessingException {
org.osoa.sca.annotations.Service annotation = clazz.getAnnotation(org.osoa.sca.annotations.Service.class);
if (annotation == null) {
// scan intefaces for remotable
Set<Class> interfaces = getAllInterfaces(clazz);
for (Class<?> interfaze : interfaces) {
if (interfaze.getAnnotation(Remotable.class) != null) {
JavaMappedService service;
try {
service = implService.createService(interfaze);
} catch (InvalidServiceContractException e) {
throw new ProcessingException(e);
}
type.getServices().put(service.getName(), service);
}
}
return;
}
Class<?>[] interfaces = annotation.interfaces();
if (interfaces.length == 0) {
Class<?> interfaze = annotation.value();
if (Void.class.equals(interfaze)) {
throw new IllegalServiceDefinitionException("No interfaces specified");
} else {
interfaces = new Class<?>[1];
interfaces[0] = interfaze;
}
}
for (Class<?> interfaze : interfaces) {
if (!interfaze.isInterface()) {
throw new InvalidServiceType("Service must be an interface", interfaze.getName());
}
JavaMappedService service;
try {
service = implService.createService(interfaze);
} catch (InvalidServiceContractException e) {
throw new ProcessingException(e);
}
type.getServices().put(service.getName(), service);
}
}
public void visitMethod(CompositeComponent parent,
Method method,
PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type,
DeploymentContext context) throws ProcessingException {
Callback annotation = method.getAnnotation(Callback.class);
if (annotation == null) {
return;
}
if (method.getParameterTypes().length != 1) {
throw new IllegalCallbackReferenceException("Setter must have one parameter", method.toString());
}
String name = toPropertyName(method.getName());
JavaMappedService callbackService = null;
Class<?> callbackClass = method.getParameterTypes()[0];
for (JavaMappedService service : type.getServices().values()) {
ServiceContract serviceContract = service.getServiceContract();
if (serviceContract.getCallbackClass().equals(callbackClass)) {
callbackService = service;
}
}
if (callbackService == null) {
throw new IllegalCallbackReferenceException("Callback type does not match a service callback interface");
}
callbackService.setCallbackReferenceName(name);
callbackService.setCallbackMember(method);
}
public void visitField(CompositeComponent parent, Field field,
PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type,
DeploymentContext context) throws ProcessingException {
Callback annotation = field.getAnnotation(Callback.class);
if (annotation == null) {
return;
}
String name = field.getName();
JavaMappedService callbacksService = null;
Class<?> callbackClass = field.getType();
for (JavaMappedService service : type.getServices().values()) {
ServiceContract serviceContract = service.getServiceContract();
if (serviceContract.getCallbackClass().equals(callbackClass)) {
callbacksService = service;
}
}
if (callbacksService == null) {
throw new IllegalCallbackReferenceException("Callback type does not match a service callback interface");
}
callbacksService.setCallbackReferenceName(name);
callbacksService.setCallbackMember(field);
}
}
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