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java.lang.Objectorg.apache.openjpa.jdbc.meta.JDBCValueOrder
class JDBCValueOrder
Order by value columns, which are the primary key columns in the case of a relation field.
| Field Summary |
|---|
| Fields inherited from interface org.apache.openjpa.meta.Order |
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ELEMENT |
| Constructor Summary | |
|---|---|
JDBCValueOrder(FieldMapping fm,
boolean asc)
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|
| Method Summary | |
|---|---|
Comparator<?> |
getComparator()
Return a comparator for ordering by this element, or null if the ordering is done in the datastore. |
DBIdentifier |
getIdentifier()
|
String |
getName()
Return the name of the orderable. |
boolean |
isAscending()
Order direction. |
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 |
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public JDBCValueOrder(FieldMapping fm,
boolean asc)
| Method Detail |
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public String getName()
Order
getName in interface Orderpublic DBIdentifier getIdentifier()
getIdentifier in interface JDBCOrderpublic boolean isAscending()
Order
isAscending in interface Orderpublic Comparator<?> getComparator()
Order
getComparator in interface Orderpublic boolean isInRelation()
JDBCOrder
isInRelation in interface JDBCOrder
public void order(Select sel,
ClassMapping elem,
Joins joins)
JDBCOrder
order in interface JDBCOrderelem - if this value has independent mappings, the mapping
we're selecting
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