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## 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
`MetaDataInheritanceComparator()`

Method Summary
`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`

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`

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