Package org.apache.openjpa.jdbc.meta.strats

Class AbstractStrategy

java.lang.Object

org.apache.openjpa.jdbc.meta.strats.AbstractStrategy

All Implemented Interfaces:

Serializable, Strategy

Direct Known Subclasses:

AbstractClassStrategy, AbstractDiscriminatorStrategy, AbstractFieldStrategy, AbstractVersionStrategy

public abstract class AbstractStrategy
extends Object
implements Strategy

No-op strategy for easy extension.

Author:

Abe White

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractStrategy()

Method Summary

Modifier and Type	Method	Description
void	customDelete(OpenJPAStateManager sm, JDBCStore store)	Override this method to customize flushing this mapping.
void	customInsert(OpenJPAStateManager sm, JDBCStore store)	Override this method to customize flushing this mapping.
void	customUpdate(OpenJPAStateManager sm, JDBCStore store)	Override this method to customize flushing this mapping.
void	delete(OpenJPAStateManager sm, JDBCStore store, RowManager rm)	Set the where values appropriately to delete the proper instance, and set all relations on non-secondary tables as updates.
String	getAlias()	Return the alias of this strategy.
void	initialize()	Perform caching and other initialization operations.
void	insert(OpenJPAStateManager sm, JDBCStore store, RowManager rm)	Set values for the mapping into the proper rows.
Boolean	isCustomDelete(OpenJPAStateManager sm, JDBCStore store)	Return Boolean.FALSE if this mapping does not customize the delete process, Boolean.TRUE if it does, or null if it does customize the delete, but also relies on the standard delete method being called.
Boolean	isCustomInsert(OpenJPAStateManager sm, JDBCStore store)	Return Boolean.FALSE if this mapping does not customize the insert process, Boolean.TRUE if it does, or null if it does customize the insert, but also relies on the standard insert method being called.
Boolean	isCustomUpdate(OpenJPAStateManager sm, JDBCStore store)	Return Boolean.FALSE if this mapping does not customize the update process, Boolean.TRUE if it does, or null if it does customize the update, but also relies on the standard update method being called.
void	map(boolean adapt)	Map the owning mapping using this strategy.
void	update(OpenJPAStateManager sm, JDBCStore store, RowManager rm)	Set values for the mapping into the proper rows.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractStrategy

public AbstractStrategy()

Method Details

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

map

public void map(boolean adapt)

Description copied from interface: Strategy

Map the owning mapping using this strategy.

Specified by:

map in interface Strategy

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

initialize

public void initialize()

Description copied from interface: Strategy

Perform caching and other initialization operations. This method is called after Strategy.map(boolean), and after all related components have been mapped as well.

Specified by:

initialize in interface Strategy

insert

public void insert(OpenJPAStateManager sm,
 JDBCStore store,
 RowManager rm)
            throws SQLException

Description copied from interface: Strategy

Set values for the mapping into the proper rows. For class mappings, this method will be called only after the corresponding method has been called for all fields of this mapping.

Specified by:

insert in interface Strategy

Throws:

SQLException

update

public void update(OpenJPAStateManager sm,
 JDBCStore store,
 RowManager rm)
            throws SQLException

Description copied from interface: Strategy

Set values for the mapping into the proper rows.

Specified by:

update in interface Strategy

Throws:

SQLException

See Also:

• Strategy.insert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.sql.RowManager)

delete

public void delete(OpenJPAStateManager sm,
 JDBCStore store,
 RowManager rm)
            throws SQLException

Description copied from interface: Strategy

Set the where values appropriately to delete the proper instance, and set all relations on non-secondary tables as updates. This allows foreign key analysis.

Specified by:

delete in interface Strategy

Throws:

SQLException

See Also:

• Strategy.insert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.sql.RowManager)

isCustomInsert

public Boolean isCustomInsert(OpenJPAStateManager sm,
 JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the insert process, Boolean.TRUE if it does, or null if it does customize the insert, but also relies on the standard insert method being called. Implement the Strategy.customInsert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to implement the custom insertion behavior.

Specified by:

isCustomInsert in interface Strategy

isCustomUpdate

public Boolean isCustomUpdate(OpenJPAStateManager sm,
 JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the update process, Boolean.TRUE if it does, or null if it does customize the update, but also relies on the standard update method being called. Implement the Strategy.customUpdate(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to override the default update behavior.

Specified by:

isCustomUpdate in interface Strategy

isCustomDelete

public Boolean isCustomDelete(OpenJPAStateManager sm,
 JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the delete process, Boolean.TRUE if it does, or null if it does customize the delete, but also relies on the standard delete method being called. Implement the Strategy.customDelete(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to override the default deletion behavior.

Specified by:

isCustomDelete in interface Strategy

customInsert

public void customInsert(OpenJPAStateManager sm,
 JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields. For fields, this method is called after the owning object is inserted, so if this field is in a row with other fields, that row will already exist.

Specified by:

customInsert in interface Strategy

Throws:

SQLException

customUpdate

public void customUpdate(OpenJPAStateManager sm,
 JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields.

Specified by:

customUpdate in interface Strategy

Throws:

SQLException

customDelete

public void customDelete(OpenJPAStateManager sm,
 JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields. For fields, this method will be called after the owning object is deleted.

Specified by:

customDelete in interface Strategy

Throws:

SQLException