/* | |
* 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 WARRANTIESOR 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.aries.jpa.blueprint.supplier.impl; | |
import static org.osgi.service.jpa.EntityManagerFactoryBuilder.JPA_UNIT_NAME; | |
import java.lang.reflect.InvocationHandler; | |
import java.lang.reflect.InvocationTargetException; | |
import java.lang.reflect.Method; | |
import javax.persistence.EntityManagerFactory; | |
import org.osgi.framework.BundleContext; | |
import org.osgi.framework.Filter; | |
import org.osgi.framework.FrameworkUtil; | |
import org.osgi.framework.InvalidSyntaxException; | |
import org.osgi.util.tracker.ServiceTracker; | |
public class EmfProxy implements InvocationHandler { | |
private ServiceTracker<EntityManagerFactory, EntityManagerFactory> tracker; | |
public EmfProxy(BundleContext context, String unitName) { | |
String filterS = String.format("(&(objectClass=%s)(%s=%s))", | |
EntityManagerFactory.class.getName(), JPA_UNIT_NAME, unitName); | |
Filter filter; | |
try { | |
filter = FrameworkUtil.createFilter(filterS); | |
} catch (InvalidSyntaxException e) { | |
throw new IllegalStateException(e); | |
} | |
tracker = new ServiceTracker<>(context, filter, null); | |
tracker.open(); | |
} | |
private EntityManagerFactory getEntityManagerFactory() { | |
try { | |
return tracker.waitForService(10000); | |
} catch (InterruptedException e) { | |
throw new IllegalStateException(e); | |
} | |
} | |
@Override | |
public Object invoke(Object proxy, Method method, Object[] args) | |
throws Throwable { | |
Object res = null; | |
EntityManagerFactory delegate = getEntityManagerFactory(); | |
try { | |
res = method.invoke(delegate, args); | |
} catch (IllegalArgumentException e) { | |
new IllegalStateException(e); | |
} catch (InvocationTargetException e) { | |
new IllegalStateException(e); | |
} | |
return res; | |
} | |
} |