/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.jpa.openjpa;
import java.net.URL;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.persistence.Entity;
import org.apache.openjpa.persistence.PersistenceMetaDataFactory;
import org.jboss.as.jpa.spi.PersistenceUnitMetadata;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.Index;
/**
* OpenJPA MetaDataFactory that uses the annotation index provided by PersistenceUnitMetadata
* to search entity classes from the persistence unit.
*
* @author Antti Laisi
*/
public class JBossPersistenceMetaDataFactory extends PersistenceMetaDataFactory {
private static final ThreadLocal<PersistenceUnitMetadata> PERSISTENCE_UNIT_METADATA = new ThreadLocal<PersistenceUnitMetadata>();
/** Cache of the type names, used when restarting the persistence unit service */
private static final Map<PersistenceUnitMetadata, Set<String>> CACHED_TYPENAMES = new HashMap<PersistenceUnitMetadata, Set<String>>();
@Override
protected Set<String> parsePersistentTypeNames(ClassLoader loader) {
PersistenceUnitMetadata pu = PERSISTENCE_UNIT_METADATA.get();
if (pu == null) {
return Collections.emptySet();
}
return findPersistenceTypeNames(pu);
}
static void setThreadLocalPersistenceUnitMetadata(PersistenceUnitMetadata pu) {
PERSISTENCE_UNIT_METADATA.set(pu);
}
static void clearThreadLocalPersistenceUnitMetadata() {
PERSISTENCE_UNIT_METADATA.remove();
}
static void cleanup(PersistenceUnitMetadata pu) {
synchronized (CACHED_TYPENAMES) {
CACHED_TYPENAMES.remove(pu);
}
}
private Set<String> findPersistenceTypeNames(PersistenceUnitMetadata pu) {
synchronized (CACHED_TYPENAMES) {
Set<String> typeNames = CACHED_TYPENAMES.get(pu);
if (typeNames != null) {
return typeNames;
}
}
Set<String> persistenceTypeNames = new HashSet<String>();
for (Map.Entry<URL, Index> entry : pu.getAnnotationIndex().entrySet()) {
List<AnnotationInstance> instances = entry.getValue().getAnnotations(DotName.createSimple(Entity.class.getName()));
for (AnnotationInstance instance : instances) {
AnnotationTarget target = instance.target();
if (target instanceof ClassInfo) {
ClassInfo classInfo = (ClassInfo) target;
persistenceTypeNames.add(classInfo.name().toString());
}
}
}
synchronized (CACHED_TYPENAMES) {
CACHED_TYPENAMES.put(pu, persistenceTypeNames);
}
return persistenceTypeNames;
}
}