/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.jpa.graph.internal;
import java.util.List;
import javax.persistence.AttributeNode;
import javax.persistence.EntityGraph;
import javax.persistence.Subgraph;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.EntityType;
import javax.persistence.metamodel.IdentifiableType;
import org.hibernate.cfg.NotYetImplementedException;
import org.hibernate.graph.spi.GraphNodeImplementor;
import org.hibernate.jpa.HibernateEntityManagerFactory;
/**
* The Hibernate implementation of the JPA EntityGraph contract.
*
* @author Steve Ebersole
*/
public class EntityGraphImpl<T> extends AbstractGraphNode<T> implements EntityGraph<T>, GraphNodeImplementor {
private final String name;
private final EntityType<T> entityType;
public EntityGraphImpl(String name, EntityType<T> entityType, HibernateEntityManagerFactory entityManagerFactory) {
super( entityManagerFactory, true );
this.name = name;
this.entityType = entityType;
}
public EntityGraphImpl<T> makeImmutableCopy(String name) {
return new EntityGraphImpl<T>( name, this, false );
}
public EntityGraphImpl<T> makeMutableCopy() {
return new EntityGraphImpl<T>( name, this, true );
}
private EntityGraphImpl(String name, EntityGraphImpl<T> original, boolean mutable) {
super( original, mutable );
this.name = name;
this.entityType = original.entityType;
}
public EntityType<T> getEntityType() {
return entityType;
}
@Override
public String getName() {
return name;
}
@Override
public void addAttributeNodes(String... attributeNames) {
super.addAttributeNodes( attributeNames );
}
@Override
public void addAttributeNodes(Attribute<T, ?>... attributes) {
super.addAttributeNodes( attributes );
}
@Override
public <X> SubgraphImpl<X> addSubgraph(Attribute<T, X> attribute) {
return super.addSubgraph( attribute );
}
@Override
public <X> SubgraphImpl<? extends X> addSubgraph(Attribute<T, X> attribute, Class<? extends X> type) {
return super.addSubgraph( attribute, type );
}
@Override
public <X> SubgraphImpl<X> addSubgraph(String attributeName) {
return super.addSubgraph( attributeName );
}
@Override
public <X> SubgraphImpl<X> addSubgraph(String attributeName, Class<X> type) {
return super.addSubgraph( attributeName, type );
}
@Override
public <X> SubgraphImpl<X> addKeySubgraph(Attribute<T, X> attribute) {
return super.addKeySubgraph( attribute );
}
@Override
public <X> SubgraphImpl<? extends X> addKeySubgraph(Attribute<T, X> attribute, Class<? extends X> type) {
return super.addKeySubgraph( attribute, type );
}
@Override
public <X> SubgraphImpl<X> addKeySubgraph(String attributeName) {
return super.addKeySubgraph( attributeName );
}
@Override
public <X> SubgraphImpl<X> addKeySubgraph(String attributeName, Class<X> type) {
return super.addKeySubgraph( attributeName, type );
}
@Override
public <T1 extends Object> Subgraph<? extends T1> addSubclassSubgraph(Class<? extends T1> type) {
// todo : implement
throw new NotYetImplementedException();
}
@Override
public List<AttributeNode<?>> getAttributeNodes() {
return super.attributeNodes();
}
@Override
protected Attribute<T,?> resolveAttribute(String attributeName) {
final Attribute attribute = entityType.getAttribute( attributeName );
if ( attribute == null ) {
throw new IllegalArgumentException(
String.format(
"Given attribute name [%s] is not an attribute on this entity [%s]",
attributeName,
entityType.getName()
)
);
}
return attribute;
}
@SuppressWarnings("unchecked")
public boolean appliesTo(String entityName) {
return appliesTo( getFactory().getEntityTypeByName( entityName ) );
}
public boolean appliesTo(EntityType<? super T> entityType) {
if ( this.entityType.equals( entityType ) ) {
return true;
}
IdentifiableType superType = entityType.getSupertype();
while ( superType != null ) {
if ( superType.equals( entityType ) ) {
return true;
}
superType = superType.getSupertype();
}
return false;
}
}