org.apache.openjpa.jdbc.meta
Class JDBCValueOrder

java.lang.Object
  org.apache.openjpa.jdbc.meta.JDBCValueOrder

All Implemented Interfaces:

Serializable, JDBCOrder, Order

 class JDBCValueOrder
extends Object
implements JDBCOrder

Order by value columns, which are the primary key columns in the case of a relation field.

Author:

Abe White

Field Summary

Fields inherited from interface org.apache.openjpa.meta.Order

ELEMENT

Constructor Summary

JDBCValueOrder(FieldMapping fm, boolean asc)

Method Summary

Comparator<?>	getComparator()
DBIdentifier	getIdentifier()
String	getName()
boolean	isAscending()
boolean	isInRelation() Whether the value is a member of the field's related type, rather than columns of the field itself.
void	order(Select sel, ClassMapping elem, Joins joins) Order by this value.

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCValueOrder

public JDBCValueOrder(FieldMapping fm,
                      boolean asc)

Method Detail

getName

public String getName()

Specified by:

getName in interface Order

getIdentifier

public DBIdentifier getIdentifier()

Specified by:

getIdentifier in interface JDBCOrder

isAscending

public boolean isAscending()

Specified by:

isAscending in interface Order

getComparator

public Comparator<?> getComparator()

Specified by:

getComparator in interface Order

isInRelation

public boolean isInRelation()

Description copied from interface: JDBCOrder

Whether the value is a member of the field's related type, rather than columns of the field itself.

Specified by:

isInRelation in interface JDBCOrder

order

public void order(Select sel,
                  ClassMapping elem,
                  Joins joins)

Description copied from interface: JDBCOrder

Order by this value.

Specified by:

order in interface JDBCOrder

elem - if this value has independent mappings, the mapping we're selecting