Package org.apache.openjpa.meta

Class MetaDataInheritanceComparator

java.lang.Object

org.apache.openjpa.meta.InheritanceComparator

org.apache.openjpa.meta.MetaDataInheritanceComparator

All Implemented Interfaces:

Serializable, Comparator

Direct Known Subclasses:

AnnotationPersistenceMetaDataSerializer.SerializationComparator, XMLPersistenceMetaDataSerializer.SerializationComparator

public class MetaDataInheritanceComparator
extends InheritanceComparator

Comparator that keeps metadatas in inheritance order. Also places relation types used as primary keys before the primary key field owner types.

Author:

Abe White

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
MetaDataInheritanceComparator()

Method Summary

Modifier and Type	Method	Description
int	compare(Object o1, Object o2)
protected Class	toClass(Object elem)	Subclasses can override this method to extract the class to compare on from the elements of the collection.

Methods inherited from class org.apache.openjpa.meta.InheritanceComparator

getBase, setBase

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

MetaDataInheritanceComparator

public MetaDataInheritanceComparator()

Method Detail

toClass

protected Class toClass(Object elem)

Description copied from class: InheritanceComparator

Subclasses can override this method to extract the class to compare on from the elements of the collection.

Overrides:

toClass in class InheritanceComparator

compare

public int compare(Object o1,
                   Object o2)

Specified by:

compare in interface Comparator

Overrides:

compare in class InheritanceComparator