kodo.jdbc.meta
Class MetaDataMappingFactory

java.lang.Object
  |
  +--kodo.jdbc.meta.MetaDataMappingFactory

All Implemented Interfaces:

Configurable, MappingFactory

public class MetaDataMappingFactory

extends Object

implements MappingFactory, Configurable

Factory that places mapping information in JDO metadata extensions.

Constructor Summary

MetaDataMappingFactory()

Method Summary

void	addExtensionKeys(Collection exts, Mapping mapping) Add any metadata extension keys that this MappingFactory uses to store mapping information.
boolean	dropMappings(ClassMetaData[] types) Delete the given mappings.
void	endConfiguration() Invoked upon completion of bean property configuration for this object.
boolean	isSingleOperation() Return true if this factory reads and writes all system mappings at once.
void	readMapping(ClassMetaData meta, MappingInfoRepository repos) Read the object-relational mapping for the given persistent type and add it to the given repository.
boolean	revertMappings(ClassMetaData[] types) Revert the mappings to their last saved state, or return false if any cannot be reverted.
void	setConfiguration(Configuration conf) Invoked prior to setting bean properties.
void	startConfiguration() Invoked before bean property configuration is begun on this object.
void	storeMappings(MappingInfoRepository mappings, JDOMetaDataRepository repos) Store any changes made to the given mappings, including their field mappings.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetaDataMappingFactory

public MetaDataMappingFactory()

Method Detail

setConfiguration

public void setConfiguration(Configuration conf)

Description copied from interface: Configurable

Invoked prior to setting bean properties.

Specified by:

setConfiguration in interface Configurable

startConfiguration

public void startConfiguration()

Description copied from interface: Configurable

Invoked before bean property configuration is begun on this object.

Specified by:

startConfiguration in interface Configurable

endConfiguration

public void endConfiguration()

Description copied from interface: Configurable

Invoked upon completion of bean property configuration for this object.

Specified by:

endConfiguration in interface Configurable

isSingleOperation

public boolean isSingleOperation()

Description copied from interface: MappingFactory

Return true if this factory reads and writes all system mappings at once. Knowing this lets us optimize some operations. If a factory returns true to this method, then it should be able to handle MappingFactory.readMapping(kodo.meta.ClassMetaData, kodo.jdbc.meta.MappingInfoRepository) and MappingFactory.revertMappings(kodo.meta.ClassMetaData[]) calls that pass in a null meta data argument.

Specified by:

isSingleOperation in interface MappingFactory

readMapping

public void readMapping(ClassMetaData meta,
                        MappingInfoRepository repos)

Description copied from interface: MappingFactory

Read the object-relational mapping for the given persistent type and add it to the given repository.

Specified by:

readMapping in interface MappingFactory

Following copied from interface: kodo.jdbc.meta.MappingFactory

Parameters:

type - the type to read mapping information for

repos - add the mapping information to this repository

storeMappings

public void storeMappings(MappingInfoRepository mappings,
                          JDOMetaDataRepository repos)

Description copied from interface: MappingFactory

Store any changes made to the given mappings, including their field mappings.

Specified by:

storeMappings in interface MappingFactory

Following copied from interface: kodo.jdbc.meta.MappingFactory

Parameters:

mappings - the changed mappings

repos - can be used to access class metadata if needed

revertMappings

public boolean revertMappings(ClassMetaData[] types)

Description copied from interface: MappingFactory

Revert the mappings to their last saved state, or return false if any cannot be reverted.

Specified by:

revertMappings in interface MappingFactory

Following copied from interface: kodo.jdbc.meta.MappingFactory

Parameters:

types - the types to revert

Returns:

true if all mappings were reverted, false otherwise

dropMappings

public boolean dropMappings(ClassMetaData[] types)

Description copied from interface: MappingFactory

Delete the given mappings.

Specified by:

dropMappings in interface MappingFactory

Following copied from interface: kodo.jdbc.meta.MappingFactory

Parameters:

types - the types to drop

Returns:

true if all mappings were dropped, false otherwise

addExtensionKeys

public void addExtensionKeys(Collection exts,
                             Mapping mapping)

Description copied from interface: MappingFactory

Add any metadata extension keys that this MappingFactory uses to store mapping information.

Specified by:

addExtensionKeys in interface MappingFactory

Following copied from interface: kodo.jdbc.meta.MappingFactory

Parameters:

exts - the collection to which to add the extension keys

mapping - the mapping for which to add the keys