1 files changed, 88 insertions, 0 deletions
diff --git a/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/EntityManagerProcessor.java b/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/EntityManagerProcessor.java
new file mode 100644
index 0000000000..8046c0a7c0
--- /dev/null
+++ b/sandbox/old/contrib/persistence/openjpa/src/main/java/org/apache/tuscany/service/openjpa/EntityManagerProcessor.java
@@ -0,0 +1,88 @@
+/*
+ * 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.lang.reflect.Member;
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.PersistenceContext;
+
+import org.apache.tuscany.spi.ObjectFactory;
+import org.apache.tuscany.spi.annotation.Autowire;
+import org.apache.tuscany.spi.component.CompositeComponent;
+import org.apache.tuscany.spi.component.TargetException;
+import org.apache.tuscany.spi.deployer.DeploymentContext;
+import org.apache.tuscany.spi.implementation.java.AbstractPropertyProcessor;
+import org.apache.tuscany.spi.implementation.java.ImplementationProcessorService;
+import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
+import org.apache.tuscany.spi.implementation.java.ProcessingException;
+import org.apache.tuscany.spi.wire.InboundWire;
+
+
+/**
+ * Evaluates constructors, methods, and fields annotated with {@link PersistenceContext }, creating a mapped property
+ * that will inject an {@link EntityManager} on an implementation instance.
+ *
+ * @version $Rev$ $Date$
+ */
+public class EntityManagerProcessor extends AbstractPropertyProcessor<PersistenceContext> {
+
+    public EntityManagerProcessor(@Autowire ImplementationProcessorService service) {
+        super(PersistenceContext.class, service);
+    }
+
+    protected String getName(PersistenceContext annotation) {
+        String name = annotation.unitName();
+        if (name == null) {
+            return "_defaultJPAPersistenceUnit";
+        }
+        return name;
+    }
+
+    protected <T> JavaMappedProperty<T> createProperty(String name,
+                                                       Class<T> javaType,
+                                                       Member member) throws ProcessingException {
+        if (!EntityManager.class.equals(javaType)) {
+            throw new InvalidInjectionSite("Injection site must by of type " + EntityManager.class.getName(), name);
+        }
+        return super.createProperty(name, javaType, member);
+    }
+
+    @SuppressWarnings("unchecked")
+    protected <T> void initProperty(JavaMappedProperty<T> property,
+                                    PersistenceContext annotation,
+                                    CompositeComponent parent,
+                                    DeploymentContext context) throws ProcessingException {
+        EntityManagerFactory emf;
+        try {
+            InboundWire wire = parent.resolveSystemAutowire(EntityManagerFactory.class);
+            if (wire == null) {
+                throw new EntityManagerFactoryNotConfiguredException();
+            }
+            Object o = wire.getTargetService();
+            assert o instanceof EntityManagerFactory;
+            emf = (EntityManagerFactory) o;
+        } catch (TargetException e) {
+            throw new ProcessingException(e);
+        }
+        ObjectFactory factory = new EntityManagerObjectFactory(emf);
+        property.setDefaultValueFactory(factory);
+    }
+
+}