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Diffstat (limited to 'sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/JPAAtomicComponent.java')
-rw-r--r-- | sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/JPAAtomicComponent.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/JPAAtomicComponent.java b/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/JPAAtomicComponent.java new file mode 100644 index 0000000000..df74625b49 --- /dev/null +++ b/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/JPAAtomicComponent.java @@ -0,0 +1,70 @@ +/* + * 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.openjpa; + +import java.util.Map; +import javax.persistence.EntityManagerFactory; +import javax.persistence.Persistence; + +import org.apache.tuscany.spi.ObjectCreationException; +import org.apache.tuscany.spi.component.CompositeComponent; +import org.apache.tuscany.spi.component.ScopeContainer; +import org.apache.tuscany.spi.component.TargetResolutionException; +import org.apache.tuscany.spi.extension.SystemAtomicComponentExtension; + +/** + * A system service that manages a JPA <code>EntityManagerFactory</code>. This service is used by {@link + * EntityManagerProcessor} to inject an <code>EntityManager<code> on a constructor parameter, field, or method of an + * implementation instance. Since a JPA persistence context is specific to an application, this system service is scoped + * to the application composite. That is, it is contained as a system child of the application composite. + * + * @version $Rev$ $Date$ + */ +public class JPAAtomicComponent extends SystemAtomicComponentExtension { + private EntityManagerFactory factory; + private String persistenceUnit; + private Map<Object, Object> configProps; + + public JPAAtomicComponent(String name, + CompositeComponent parent, + ScopeContainer scopeContainer, + String persistenceUnit, + Map<Object, Object> configProps, + int initLevel) { + super(name, parent, initLevel); + assert persistenceUnit != null; + this.persistenceUnit = persistenceUnit; + this.configProps = configProps; + } + + public Object createInstance() throws ObjectCreationException { + if (configProps != null) { + factory = Persistence.createEntityManagerFactory(persistenceUnit, configProps); + } else { + factory = Persistence.createEntityManagerFactory(persistenceUnit); + } + return factory; + } + + public Object getTargetInstance() throws TargetResolutionException { + return factory; + } + + +} |