//$Id: InheritanceState.java 14736 2008-06-04 14:23:42Z hardy.ferentschik $
package org.hibernate.cfg;
import java.util.Map;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.MappedSuperclass;
import org.hibernate.annotations.common.reflection.ReflectionManager;
import org.hibernate.annotations.common.reflection.XAnnotatedElement;
import org.hibernate.annotations.common.reflection.XClass;
/**
* Some extra data to the inheritance position of a class
*
* @author Emmanuel Bernard
*/
public class InheritanceState {
public InheritanceState(XClass clazz) {
this.clazz = clazz;
extractInheritanceType();
}
public XClass clazz;
/**
* has son either mappedsuperclass son or entity son
*/
public boolean hasSons = false;
/**
* a mother entity is available
*/
public boolean hasParents = false;
public InheritanceType type;
public boolean isEmbeddableSuperclass = false;
/**
* only defined on embedded superclasses
*/
public String accessType = null;
public Boolean isPropertyAnnotated;
private void extractInheritanceType() {
XAnnotatedElement element = clazz;
Inheritance inhAnn = element.getAnnotation( Inheritance.class );
MappedSuperclass mappedSuperClass = element.getAnnotation( MappedSuperclass.class );
if ( mappedSuperClass != null ) {
isEmbeddableSuperclass = true;
type = inhAnn == null ? null : inhAnn.strategy();
}
else {
type = inhAnn == null ? InheritanceType.SINGLE_TABLE : inhAnn.strategy();
}
}
boolean hasTable() {
return !hasParents || !InheritanceType.SINGLE_TABLE.equals( type );
}
boolean hasDenormalizedTable() {
return hasParents && InheritanceType.TABLE_PER_CLASS.equals( type );
}
public static InheritanceState getSuperEntityInheritanceState(
XClass clazz, Map<XClass, InheritanceState> states,
ReflectionManager reflectionManager
) {
XClass superclass = clazz;
do {
superclass = superclass.getSuperclass();
InheritanceState currentState = states.get( superclass );
if ( currentState != null && !currentState.isEmbeddableSuperclass ) return currentState;
}
while ( superclass != null && !reflectionManager.equals( superclass, Object.class ) );
return null;
}
public static InheritanceState getSuperclassInheritanceState(
XClass clazz, Map<XClass, InheritanceState> states,
ReflectionManager reflectionManager
) {
XClass superclass = clazz;
do {
superclass = superclass.getSuperclass();
InheritanceState currentState = states.get( superclass );
if ( currentState != null ) return currentState;
}
while ( superclass != null && !reflectionManager.equals( superclass, Object.class ) );
return null;
}
}