/*******************************************************************************
* Copyright (c) 2011, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* 03/19/2009-2.0 dclarke - initial API start
* 06/30/2009-2.0 mobrien - finish JPA Metadata API modifications in support
* of the Metamodel implementation for EclipseLink 2.0 release involving
* Map, ElementCollection and Embeddable types on MappedSuperclass descriptors
* - 266912: JPA 2.0 Metamodel API (part of the JSR-317 EJB 3.1 Criteria API)
* 07/06/2009-2.0 mobrien - 266912: Introduce IdentifiableTypeImpl between ManagedTypeImpl
* - EntityTypeImpl now inherits from IdentifiableTypeImpl instead of ManagedTypeImpl
* - MappedSuperclassTypeImpl now inherits from IdentifiableTypeImpl instead
* of implementing IdentifiableType indirectly
* 07/16/2009-2.0 mobrien - 266912: implement getIdType() minus full composite key support
* http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/metamodel_api#DI_47:_20090715:_Implement_IdentifiableType.getIdType.28.29_for_composite_keys
******************************************************************************/
package org.eclipse.persistence.internal.jpa.metamodel;
import javax.persistence.metamodel.Bindable;
import javax.persistence.metamodel.EntityType;
import javax.persistence.metamodel.Type;
import org.eclipse.persistence.descriptors.ClassDescriptor;
/**
* <p>
* <b>Purpose</b>: Provides the implementation for the EntityType interface
* of the JPA 2.0 Metamodel API (part of the JSR-317 EJB 3.1 Criteria API)
* <br>EntityTypeImpl implements the IdentifiableType interface via EntityType
* <p>
* <b>Description</b>:
* Instances of the type EntityType represent entity types.
*
* @see javax.persistence.metamodel.EntityType
*
* @since EclipseLink 1.2 - JPA 2.0
* @param <X> The represented entity type.
*/
public class EntityTypeImpl<X> extends IdentifiableTypeImpl<X> implements EntityType<X> {
/** Item 54: DI 89: explicit UID will avoid performance hit runtime generation of one */
private static final long serialVersionUID = 7970950485096018114L;
protected EntityTypeImpl(MetamodelImpl metamodel, ClassDescriptor descriptor) {
super(metamodel, descriptor);
// The supertype field will remain uninstantiated until MetamodelImpl.initialize() is complete
}
/**
* Return the bindable type of the represented object.
* @return bindable type
*/
public Bindable.BindableType getBindableType() {
return Bindable.BindableType.ENTITY_TYPE;
}
/**
* Return the Java type of the represented object.
* If the bindable type of the object is <code>PLURAL_ATTRIBUTE</code>,
* the Java element type is returned. If the bindable type is
* <code>SINGULAR_ATTRIBUTE</code> or <code>ENTITY_TYPE</code>,
* the Java type of the
* represented entity or attribute is returned.
* @return Java type
*/
public Class<X> getBindableJavaType() {
// In EntityType our BindableType is ENTITY_TYPE - return the java type of the entity
return this.getJavaType();
}
/**
* Return the entity name
* @return entity name
*/
public String getName() {
return getDescriptor().getAlias();
}
/**
* Return the persistence type.
* @return persistence type
*/
public Type.PersistenceType getPersistenceType() {
return Type.PersistenceType.ENTITY;
}
/**
* INTERNAL:
* Return whether this type is an Entity (true) or MappedSuperclass (false) or Embeddable (false)
* @return
*/
@Override
public boolean isEntity() {
return true;
}
/**
* INTERNAL:
* Return whether this type is an MappedSuperclass (true) or Entity (false) or Embeddable (false)
* @return
*/
@Override
public boolean isMappedSuperclass() {
return !isEntity();
}
}