diff options
Diffstat (limited to 'sandbox/old/contrib/persistence/common/src/main/java/org/apache/tuscany/service/persistence/common/PersistenceUnitProcessor.java')
-rw-r--r-- | sandbox/old/contrib/persistence/common/src/main/java/org/apache/tuscany/service/persistence/common/PersistenceUnitProcessor.java | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/sandbox/old/contrib/persistence/common/src/main/java/org/apache/tuscany/service/persistence/common/PersistenceUnitProcessor.java b/sandbox/old/contrib/persistence/common/src/main/java/org/apache/tuscany/service/persistence/common/PersistenceUnitProcessor.java new file mode 100644 index 0000000000..169f48fec7 --- /dev/null +++ b/sandbox/old/contrib/persistence/common/src/main/java/org/apache/tuscany/service/persistence/common/PersistenceUnitProcessor.java @@ -0,0 +1,122 @@ +/* + * 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.service.persistence.common; + +import java.lang.reflect.Field; +import java.net.URI; +import javax.persistence.EntityManagerFactory; +import javax.persistence.PersistenceUnit; + +import org.osoa.sca.annotations.Reference; + +import org.apache.tuscany.spi.ObjectFactory; +import org.apache.tuscany.spi.component.AtomicComponent; +import org.apache.tuscany.spi.component.RegistrationException; +import org.apache.tuscany.spi.component.TargetException; +import org.apache.tuscany.spi.deployer.DeploymentContext; +import org.apache.tuscany.spi.idl.InvalidServiceContractException; +import org.apache.tuscany.spi.idl.java.InterfaceJavaIntrospector; +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.Resource; +import org.apache.tuscany.spi.model.ServiceContract; + +import org.apache.tuscany.core.component.ComponentManager; + +/** + * Annotation processor for injecting <code>PersistenceUnit</code> annotations on properties. + * + * @version $Rev$ $Date$ + */ +public class PersistenceUnitProcessor extends ImplementationProcessorExtension { + /** + * Persistence unit builder + */ + private PersistenceUnitBuilder builder = new DefaultPersistenceUnitBuilder(); + private ComponentManager componentManager; + private InterfaceJavaIntrospector introspector; + + @Reference + public void setComponentManager(ComponentManager componentManager) { + this.componentManager = componentManager; + } + + @Reference + public void setIntrospector(InterfaceJavaIntrospector introspector) { + this.introspector = introspector; + } + + + @SuppressWarnings({"unchecked"}) + public void visitField(Field field, + PojoComponentType<JavaMappedService, JavaMappedReference, JavaMappedProperty<?>> type, + DeploymentContext context) throws ProcessingException { + + PersistenceUnit annotation = field.getAnnotation(PersistenceUnit.class); + if (annotation == null) { + return; + } + String unitName = annotation.unitName(); + URI unitUri = context.getComponentId().resolve(unitName); + AtomicComponent component = (AtomicComponent) componentManager.getComponent(unitUri); + EntityManagerFactory emf; + if (component == null) { + emf = builder.newEntityManagerFactory(unitName, context.getClassLoader()); + try { + ServiceContract<EntityManagerFactory> contract = + (ServiceContract) introspector.introspect(EntityManagerFactory.class); + componentManager.registerJavaObject(unitUri, contract, emf); + } catch (RegistrationException e) { + throw new ProcessingException(e); + } catch (InvalidServiceContractException e) { + throw new ProcessingException(e); + } + } else { + try { + emf = (EntityManagerFactory) component.getTargetInstance(); + } catch (TargetException e) { + throw new ProcessingException(e); + } + } + + ObjectFactory factory = new EmfObjectFactory(emf); + Resource resource = new Resource(unitName, field.getType(), field); + resource.setObjectFactory(factory); + type.add(resource); + } + + private class EmfObjectFactory implements ObjectFactory<EntityManagerFactory> { + + private EntityManagerFactory emf; + + public EmfObjectFactory(EntityManagerFactory emf) { + this.emf = emf; + } + + public EntityManagerFactory getInstance() { + return emf; + } + + } + +} |