org.hibernate.jpa.graph.internal.EntityGraphImpl Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of hibernate-core
The core O/RM functionality as provided by Hibernate
There is a newer version: 7.0.0.Alpha1
/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
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 javax.persistence.metamodel.ManagedType;

import org.hibernate.cfg.NotYetImplementedException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.graph.spi.EntityGraphImplementor;

/**
 * The Hibernate implementation of the JPA EntityGraph contract.
 *
 * @author Steve Ebersole
 */
public class EntityGraphImpl extends AbstractGraphNode implements EntityGraph, EntityGraphImplementor {
	private final String name;
	private final EntityType entityType;

	public EntityGraphImpl(String name, EntityType entityType, SessionFactoryImplementor sessionFactory) {
		super( sessionFactory, true );
		this.name = name;
		this.entityType = entityType;
	}

	public EntityGraphImpl makeImmutableCopy(String name) {
		return new EntityGraphImpl<>( name, this, false );
	}

	public EntityGraphImpl makeMutableCopy() {
		return new EntityGraphImpl<>( name, this, true );
	}

	private EntityGraphImpl(String name, EntityGraphImpl original, boolean mutable) {
		super( original, mutable );
		this.name = name;
		this.entityType = original.entityType;
	}

	public EntityType getEntityType() {
		return entityType;
	}

	@Override
	public String getName() {
		return name;
	}

	@Override
	public void addAttributeNodes(String... attributeNames) {
		super.addAttributeNodes( attributeNames );
	}

	@Override
	@SafeVarargs
	public final void addAttributeNodes(Attribute... attributes) {
		super.addAttributeNodes( attributes );
	}

	@Override
	public  SubgraphImpl addSubgraph(Attribute attribute) {
		return super.addSubgraph( attribute );
	}

	@Override
	public  SubgraphImpl addSubgraph(Attribute attribute, Class type) {
		return super.addSubgraph( attribute, type );
	}

	@Override
	public  SubgraphImpl addSubgraph(String attributeName) {
		return super.addSubgraph( attributeName );
	}

	@Override
	public  SubgraphImpl addSubgraph(String attributeName, Class type) {
		return super.addSubgraph( attributeName, type );
	}

	@Override
	public  SubgraphImpl addKeySubgraph(Attribute attribute) {
		return super.addKeySubgraph( attribute );
	}

	@Override
	public  SubgraphImpl addKeySubgraph(Attribute attribute, Class type) {
		return super.addKeySubgraph( attribute, type );
	}

	@Override
	public  SubgraphImpl addKeySubgraph(String attributeName) {
		return super.addKeySubgraph( attributeName );
	}

	@Override
	public  SubgraphImpl addKeySubgraph(String attributeName, Class type) {
		return super.addKeySubgraph( attributeName, type );
	}

	@Override
	public  Subgraph addSubclassSubgraph(Class type) {
		// todo : implement
		throw new NotYetImplementedException();
	}

	@Override
	public List> getAttributeNodes() {
		return super.attributeNodes();
	}

	@Override
	@SuppressWarnings("unchecked")
	protected Attribute 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().getMetamodel().entity( entityName ) );
	}

	public boolean appliesTo(EntityType 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;
	}

	@Override
	ManagedType getManagedType() {
		return entityType;
	}
}