org.apache.openjpa.jdbc.meta.strats
Class FlatClassStrategy
java.lang.Object
org.apache.openjpa.jdbc.meta.strats.AbstractStrategy
org.apache.openjpa.jdbc.meta.strats.AbstractClassStrategy
org.apache.openjpa.jdbc.meta.strats.FlatClassStrategy
- All Implemented Interfaces:
- Serializable, ClassStrategy, Strategy
public class FlatClassStrategy
- extends AbstractClassStrategy
Mapping for classes mapped to their superclass table.
- Author:
- Abe White
- See Also:
- Serialized Form
Method Summary |
String |
getAlias()
Return the alias of this strategy. |
boolean |
isPrimaryKeyObjectId(boolean hasAll)
Return true if the this class' primary key columns correspond to the
base class' primary key columns used to construct oid values. |
void |
map(boolean adapt)
Map the owning mapping using this strategy. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ALIAS
public static final String ALIAS
- See Also:
- Constant Field Values
FlatClassStrategy
public FlatClassStrategy()
getAlias
public String getAlias()
- Description copied from interface:
Strategy
- Return the alias of this strategy. For custom strategies, return the
full class name.
- Specified by:
getAlias
in interface Strategy
- Overrides:
getAlias
in class AbstractStrategy
map
public void map(boolean adapt)
- Description copied from interface:
Strategy
- Map the owning mapping using this strategy.
- Specified by:
map
in interface Strategy
- Overrides:
map
in class AbstractStrategy
- Parameters:
adapt
- if true, use the owning mapping's raw mapping info
to set its ORM data; if false, ORM data will already be set
isPrimaryKeyObjectId
public boolean isPrimaryKeyObjectId(boolean hasAll)
- Description copied from interface:
ClassStrategy
- Return true if the this class' primary key columns correspond to the
base class' primary key columns used to construct oid values. Base
classes always return true. Classes that join to the base class table,
though, may not always join using the same columns the base class
uses for oid values, or may not use all the columns. When performing a
select, we will join down to the most-derived class that is identified
by oid values. We cannot use non-primary key field values for joining
during selects, because the field values to join on might be the ones
we're trying to select! Similarly, we can only reconstruct oid values
for selected objects using classes whose primary keys store oid values.
- Specified by:
isPrimaryKeyObjectId
in interface ClassStrategy
- Overrides:
isPrimaryKeyObjectId
in class AbstractClassStrategy
- Parameters:
hasAll
- if true, there must be a primary key column for every
base class primary key column; if false the primary key
must only match a subset of the base class primary key columns
Copyright © 2006-2007 Apache Software Foundation. All Rights Reserved.