org.apache.openjpa.jdbc.meta.strats
Class EmbeddedClassStrategy
java.lang.Object
org.apache.openjpa.jdbc.meta.strats.AbstractStrategy
org.apache.openjpa.jdbc.meta.strats.AbstractClassStrategy
org.apache.openjpa.jdbc.meta.strats.EmbeddedClassStrategy
- All Implemented Interfaces:
- Serializable, ClassStrategy, Strategy
public class EmbeddedClassStrategy
- extends AbstractClassStrategy
Class mapping for embedded objects.
- Author:
- Abe White
- See Also:
- Serialized Form
Method Summary |
Object |
getNullIndicatorValue(OpenJPAStateManager sm)
Return the proper synthetic null indicator value for the given instance. |
boolean |
indicatesNull(Object val)
Return whether the given null indicator value means the object is null. |
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 org.apache.openjpa.jdbc.meta.strats.AbstractStrategy |
customDelete, customInsert, customUpdate, delete, getAlias, initialize, insert, isCustomDelete, isCustomInsert, isCustomUpdate, update |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.openjpa.jdbc.meta.Strategy |
customDelete, customInsert, customUpdate, delete, getAlias, initialize, insert, isCustomDelete, isCustomInsert, isCustomUpdate, update |
EmbeddedClassStrategy
public EmbeddedClassStrategy()
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
getNullIndicatorValue
public Object getNullIndicatorValue(OpenJPAStateManager sm)
- Return the proper synthetic null indicator value for the given instance.
indicatesNull
public boolean indicatesNull(Object val)
- Return whether the given null indicator value means the object is null.
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 © 2006-2010 Apache Software Foundation. All Rights Reserved.