org.eclipse.persistence.internal.queries

Class MappedKeyMapContainerPolicy

java.lang.Object

org.eclipse.persistence.internal.queries.ContainerPolicy

org.eclipse.persistence.internal.queries.InterfaceContainerPolicy

org.eclipse.persistence.internal.queries.MapContainerPolicy

org.eclipse.persistence.internal.queries.MappedKeyMapContainerPolicy

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, CoreContainerPolicy<AbstractSession>, CoreMappedKeyMapContainerPolicy<AbstractSession>

public class MappedKeyMapContainerPolicy
extends MapContainerPolicy
implements CoreMappedKeyMapContainerPolicy<AbstractSession>

A MappedKeyMapContainerPolicy should be used for mappings to implementers of Map. It differs from MapContainerPolicy by allowing the MapKey to be an otherwise unmapped column in a table rather than a mapped element of the value in the map. This container policy holds a reference to a KeyMapping that will be used to construct the key from the database and a reference to its owner which creates the value for the map. The key of the map can be any implementer of MapKeyMapping and the data representing the key can either be stored in the target table of the value mapping, or in a collection table that associates the source to the target. The data can either be everything necessary to compose the key, or foreign keys that allow the key to be retrieved

Author:

tware

See Also:

MapContainerPolicy, MapKeyMapping, MapComponentMapping, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.persistence.internal.queries.MapContainerPolicy

MapContainerPolicy.MapContainerPolicyIterator

Field Summary

Fields

Modifier and Type	Field and Description
DatabaseQuery	keyQuery

Constructor Summary

Constructors

Constructor and Description
MappedKeyMapContainerPolicy() INTERNAL: Construct a new policy.
MappedKeyMapContainerPolicy(java.lang.Class containerClass) INTERNAL: Construct a new policy for the specified class.
MappedKeyMapContainerPolicy(java.lang.String containerClassName) INTERNAL: Construct a new policy for the specified class name.

Method Summary

Modifier and Type	Method and Description
void	addAdditionalFieldsToQuery(ReadQuery selectionQuery, Expression baseExpression) INTERNAL: Called when the selection query is being initialize to add the fields for the key to the query
void	addFieldsForMapKey(AbstractRecord joinRow) INTERNAL: Called when the insert query is being initialized to ensure the fields for the key are in the insert query
boolean	addInto(java.lang.Object element, java.lang.Object container, AbstractSession session) INTERNAL: Add element into container which implements the Map interface.
boolean	addInto(java.lang.Object element, java.lang.Object container, AbstractSession session, AbstractRecord row, DataReadQuery query, CacheKey parentCacheKey, boolean isTargetProtected) INTERNAL: This is used for ordered List containers to add all of the elements to the collection in the order of the index field in the row.
boolean	addInto(java.lang.Object element, java.lang.Object container, AbstractSession session, AbstractRecord dbRow, ObjectBuildingQuery query, CacheKey parentCacheKey, boolean isTargetProtected) INTERNAL: Add element to that implements the Map interface use the row to compute the key
void	addNestedJoinsQueriesForMapKey(JoinedAttributeManager joinManager, ObjectLevelReadQuery query, AbstractSession session) INTERNAL: Used for joining.
java.lang.Object	buildCloneForKey(java.lang.Object key, java.lang.Object parent, CacheKey parentCacheKey, java.lang.Integer refreshCascade, AbstractSession cloningSession, boolean isExisting, boolean isCacheCheckComplete) Build a clone for the key of a Map represented by this container policy.
java.lang.Object	buildKey(AbstractRecord row, ObjectBuildingQuery query, CacheKey parentCacheKey, AbstractSession session, boolean isTargetProtected) Extract the key for the map from the provided row.
java.lang.Object	buildKeyFromJoinedRow(AbstractRecord row, JoinedAttributeManager joinManager, ObjectBuildingQuery query, CacheKey parentCacheKey, AbstractSession session, boolean isTargetProtected) Extract the key for the map from the provided row.
java.lang.Object[]	buildReferencesPKList(java.lang.Object container, AbstractSession session) INTERNAL: This method will access the target relationship and create a list of information to rebuild the collection.
ReadQuery	buildSelectionQueryForDirectCollectionMapping() INTERNAL: Certain key mappings favor different types of selection query.
void	cascadeDiscoverAndPersistUnregisteredNewObjects(java.lang.Object object, java.util.Map newObjects, java.util.Map unregisteredExistingObjects, java.util.Map visitedObjects, UnitOfWorkImpl uow, java.util.Set cascadeErrors) INTERNAL: Cascade discover and persist new objects during commit to the map key
void	cascadePerformRemoveIfRequired(java.lang.Object object, UnitOfWorkImpl uow, java.util.Map visitedObjects) INTERNAL: Cascade registerNew to any mappings managed by the container policy.
void	cascadeRegisterNewIfRequired(java.lang.Object object, UnitOfWorkImpl uow, java.util.Map visitedObjects) INTERNAL: Cascade registerNew to any mappings managed by the container policy.
java.lang.Object	clone() INTERNAL: The mapping clones itself to create deep copy.
boolean	compareContainers(java.lang.Object firstObjectMap, java.lang.Object secondObjectMap) INTERNAL: Return true if keys are the same.
boolean	compareKeys(java.lang.Object sourceValue, AbstractSession session) INTERNAL: Return true if keys are the same in the source as the backup.
void	convertClassNamesToClasses(java.lang.ClassLoader classLoader) INTERNAL: Convert all the class-name-based settings in this ContainerPolicy to actual class-based settings
QueryKey	createQueryKeyForMapKey() INTERNAL: Create a query key that links to the map key.
java.lang.Object	createWrappedObjectFromExistingWrappedObject(java.lang.Object wrappedObject, java.lang.Object parent, ClassDescriptor referenceDescriptor, MergeManager mergeManager, AbstractSession targetSession) INTERNAL: This method will actually potentially wrap an object in two ways.
void	deleteWrappedObject(java.lang.Object objectDeleted, AbstractSession session) INTERNAL: Delete the key and value of the passed association passed object.
java.util.List<DatabaseField>	getAdditionalFieldsForJoin(CollectionMapping baseMapping) INTERNAL: Return any additional fields required by the policy for a fetch join.
java.util.List<DatabaseTable>	getAdditionalTablesForJoinQuery() INTERNAL: Return any tables that will be required when this mapping is used as part of a join query.
java.lang.Object	getCloneDataFromChangeSet(ObjectChangeSet changeSet) INTERNAL: Used when objects are added or removed during an update.
ClassDescriptor	getDescriptorForMapKey() INTERNAL: Return the reference descriptor for the map key if it exists.
DatabaseField	getDirectKeyField(CollectionMapping baseMapping) INTERNAL: Return the DatabaseField that represents the key in a DirectMapMapping.
java.util.Map<DatabaseField,DatabaseField>	getForeignKeyFieldsForMapKey() INTERNAL: Return a Map of any foreign keys defined within the the MapKey.
java.util.List<DatabaseField>	getIdentityFieldsForMapKey() INTERNAL: Return the fields that make up the identity of the mapped object.
Converter	getKeyConverter() INTERNAL: Get the Converter for the key of this mapping if one exists.
MapKeyMapping	getKeyMapping()
java.util.Map	getKeyMappingDataForWriteQuery(java.lang.Object object, AbstractSession session) INTERNAL: Add any non-Foreign-key data from an Object describe by a MapKeyMapping to a database row This is typically used in write queries to ensure all the data stored in the collection table is included in the query.
DatabaseQuery	getKeyQuery() INTERNAL: Some map keys must be obtained from the database.
Expression	getKeySelectionCriteria() INTERNAL: Get the selection criteria for the map key.
java.lang.Object	getKeyType() INTERNAL: Return the type of the map key, this will be overridden by container policies that allow maps.
MapComponentMapping	getValueMapping()
void	initialize(AbstractSession session, DatabaseTable keyTable) INTERNAL: Initialize the key mapping
boolean	isMapKeyAttribute() INTERNAL: Return whether a map key this container policy represents is an attribute By default this method will return false since only subclasses actually represent maps.
boolean	isMapKeyObject() INTERNAL: Return if the map key this container policy represents is a OneToOne.
boolean	isMappedKeyMapPolicy()
void	iterateOnMapKey(DescriptorIterator iterator, java.lang.Object element) INTERNAL: Used in Descriptor Iteration to iterate on map keys.
java.lang.Object	keyFrom(java.lang.Object element, AbstractSession session) INTERNAL: Return the key for the specified element.
void	postCalculateChanges(ObjectChangeSet ocs, ClassDescriptor referenceDescriptor, DatabaseMapping mapping, UnitOfWorkImpl uow) INTERNAL: Add the provided object to the deleted objects list on the commit manager.
void	postCalculateChanges(java.lang.Object key, java.lang.Object value, ClassDescriptor referenceDescriptor, DatabaseMapping mapping, UnitOfWorkImpl uow) INTERNAL: Add the provided object to the deleted objects list on the commit manager.
void	postInitialize(AbstractSession session) INTERNAL: Some subclasses need to post initialize mappings associated with them.
void	processAdditionalWritableMapKeyFields(AbstractSession session) INTERNAL: This method is used to check the key mapping to ensure that it does not write to a field that is written by another mapping.
boolean	propagatesEventsToCollection() INTERNAL: Returns true if the key mapping is an AggregateObjectMapping.
void	propogatePostDelete(DeleteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	propogatePostInsert(WriteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	propogatePostUpdate(WriteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	propogatePreDelete(DeleteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	propogatePreInsert(WriteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	propogatePreUpdate(WriteObjectQuery query, java.lang.Object object) INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of
void	recordPrivateOwnedRemovals(java.lang.Object object, ClassDescriptor referenceDescriptor, UnitOfWorkImpl uow) INTERNAL: Add the key and value from provided association to the deleted objects list on the commit manager.
boolean	requiresDataModificationEvents() INTERNAL: Returns whether this ContainerPolicy requires data modification events when objects are added or deleted during update.
void	setDescriptorForKeyMapping(ClassDescriptor descriptor) INTERNAL: Used during initialization of DirectMapMapping.
void	setKeyConverter(Converter keyConverter, DirectMapMapping mapping) INTERNAL: Set a converter on the KeyField of a DirectCollectionMapping.
void	setKeyConverterClassName(java.lang.String keyConverterClassName, DirectMapMapping mapping) INTERNAL: Set the name of the class to be used as a converter for the key of a DirectMapMaping.
void	setKeyField(DatabaseField keyField, ClassDescriptor descriptor) INTERNAL: Set the DatabaseField that will represent the key in a DirectMapMapping.
void	setKeyMapping(MapKeyMapping mapping)
void	setKeyQuery(DatabaseQuery keyQuery) INTERNAL: Some map keys must be obtained from the database.
void	setValueMapping(MapComponentMapping mapping)
boolean	shouldIncludeKeyInDeleteEvent() INTERNAL: Return whether data for a map key must be included on a Delete datamodification event If the keyMapping is privateOwned, that data should be.
boolean	shouldUpdateForeignKeysPostInsert() INTERNAL: Certain types of container policies require an extra update statement after a relationship is inserted.
java.lang.Object	unwrapKey(java.lang.Object key, AbstractSession session) INTERNAL: Allow the key to be unwrapped.
int	updateJoinedMappingIndexesForMapKey(java.util.Map<DatabaseMapping,java.lang.Object> indexList, int index) INTERNAL: Update the joined mapping indices Adds the key mapping and it's index to the list of joined mappings.
java.lang.Object	valueFromPKList(java.lang.Object[] pks, AbstractRecord foreignKeys, ForeignReferenceMapping mapping, AbstractSession session) INTERNAL: This method is used to load a relationship from a list of PKs.

Methods inherited from class org.eclipse.persistence.internal.queries.MapContainerPolicy

addInto, addNextValueFromIteratorInto, buildChangeSetForNewObjectInCollection, buildCollectionEntry, clear, cloneFor, concatenateContainers, createChangeEvent, getElementClass, getElementClassName, getInterfaceType, getKeyName, hasNext, isMapPolicy, isValidContainer, iteratorFor, keyFromEntry, keyFromIterator, nextEntry, nextEntry, prepare, recordUpdateToCollectionInChangeRecord, removeFrom, setElementClass, setKeyMethod, setKeyMethod, setKeyMethodName, setKeyName, setKeyName, setKeyName, sizeFor, unwrapElement, unwrapIteratorResult

Methods inherited from class org.eclipse.persistence.internal.queries.InterfaceContainerPolicy

buildContainerFromVector, equals, getCloneMethod, getContainerClass, getContainerClassName, isValidContainerType, setCloneMethod, setContainerClass, setContainerClassName

Methods inherited from class org.eclipse.persistence.internal.queries.ContainerPolicy

addAll, addAll, buildDefaultPolicy, buildPolicyFor, buildPolicyFor, clone, compareCollectionsForChange, containerInstance, containerInstance, contains, copyMapDataToRow, execute, getChangeValuesFrom, getDefaultContainerClass, getElementDescriptor, hasElementDescriptor, hasOrder, initializeConstructor, isCollectionPolicy, isCursoredStreamPolicy, isCursorPolicy, isDirectMapPolicy, isEmpty, isListPolicy, isOrderedListPolicy, isScrollableCursorPolicy, mergeCascadeParts, mergeChanges, next, overridesRead, prepareForExecution, recordAddToCollectionInChangeRecord, recordRemoveFromCollectionInChangeRecord, remoteExecute, removeFrom, setDefaultContainerClass, setElementDescriptor, shouldAddAll, toString, updateChangeRecordForSelfMerge, vectorFor

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.persistence.internal.core.queries.CoreContainerPolicy

addInto, clear, containerInstance, containerInstance, contains, hasNext, isEmpty, isListPolicy, iteratorFor, next, nextEntry, nextEntry, removeFrom, setContainerClass, sizeFor, vectorFor

Field Detail

keyQuery

public DatabaseQuery keyQuery

Constructor Detail

MappedKeyMapContainerPolicy

public MappedKeyMapContainerPolicy()

INTERNAL: Construct a new policy.

MappedKeyMapContainerPolicy

public MappedKeyMapContainerPolicy(java.lang.Class containerClass)

INTERNAL: Construct a new policy for the specified class.

MappedKeyMapContainerPolicy

public MappedKeyMapContainerPolicy(java.lang.String containerClassName)

INTERNAL: Construct a new policy for the specified class name.

Method Detail

addAdditionalFieldsToQuery

public void addAdditionalFieldsToQuery(ReadQuery selectionQuery,
                                       Expression baseExpression)

INTERNAL: Called when the selection query is being initialize to add the fields for the key to the query

Overrides:

addAdditionalFieldsToQuery in class ContainerPolicy

See Also:

MappedKeyMapContinerPolicy

getKeyMappingDataForWriteQuery

public java.util.Map getKeyMappingDataForWriteQuery(java.lang.Object object,
                                                    AbstractSession session)

INTERNAL: Add any non-Foreign-key data from an Object describe by a MapKeyMapping to a database row This is typically used in write queries to ensure all the data stored in the collection table is included in the query.

Overrides:

getKeyMappingDataForWriteQuery in class ContainerPolicy

getKeyType

public java.lang.Object getKeyType()

INTERNAL: Return the type of the map key, this will be overridden by container policies that allow maps.

Overrides:

getKeyType in class MapContainerPolicy

addFieldsForMapKey

public void addFieldsForMapKey(AbstractRecord joinRow)

INTERNAL: Called when the insert query is being initialized to ensure the fields for the key are in the insert query

Overrides:

addFieldsForMapKey in class ContainerPolicy

See Also:

MappedKeyMapContainerPolicy

addInto

public boolean addInto(java.lang.Object element,
                       java.lang.Object container,
                       AbstractSession session)

INTERNAL: Add element into container which implements the Map interface. The may be used by merging/cloning passing a Map.Entry.

Specified by:

addInto in interface CoreContainerPolicy<AbstractSession>

Overrides:

addInto in class MapContainerPolicy

addInto

public boolean addInto(java.lang.Object element,
                       java.lang.Object container,
                       AbstractSession session,
                       AbstractRecord row,
                       DataReadQuery query,
                       CacheKey parentCacheKey,
                       boolean isTargetProtected)

INTERNAL: This is used for ordered List containers to add all of the elements to the collection in the order of the index field in the row. This is currently only used by OrderListContainerPolicy, so this is just a stub. The passing of the query is to allow future compatibility with Maps (ordered Map).

Overrides:

addInto in class ContainerPolicy

addInto

public boolean addInto(java.lang.Object element,
                       java.lang.Object container,
                       AbstractSession session,
                       AbstractRecord dbRow,
                       ObjectBuildingQuery query,
                       CacheKey parentCacheKey,
                       boolean isTargetProtected)

INTERNAL: Add element to that implements the Map interface use the row to compute the key

Overrides:

addInto in class ContainerPolicy

addNestedJoinsQueriesForMapKey

public void addNestedJoinsQueriesForMapKey(JoinedAttributeManager joinManager,
                                           ObjectLevelReadQuery query,
                                           AbstractSession session)

INTERNAL: Used for joining. Add any queries necessary for joining to the join manager

Overrides:

addNestedJoinsQueriesForMapKey in class ContainerPolicy

buildCloneForKey

public java.lang.Object buildCloneForKey(java.lang.Object key,
                                         java.lang.Object parent,
                                         CacheKey parentCacheKey,
                                         java.lang.Integer refreshCascade,
                                         AbstractSession cloningSession,
                                         boolean isExisting,
                                         boolean isCacheCheckComplete)

Build a clone for the key of a Map represented by this container policy.

Overrides:

buildCloneForKey in class ContainerPolicy

Returns:

buildSelectionQueryForDirectCollectionMapping

public ReadQuery buildSelectionQueryForDirectCollectionMapping()

INTERNAL: Certain key mappings favor different types of selection query. Return the appropriate type of selectionQuery.

Overrides:

buildSelectionQueryForDirectCollectionMapping in class ContainerPolicy

Returns:

buildKey

public java.lang.Object buildKey(AbstractRecord row,
                                 ObjectBuildingQuery query,
                                 CacheKey parentCacheKey,
                                 AbstractSession session,
                                 boolean isTargetProtected)

Extract the key for the map from the provided row.

Overrides:

buildKey in class ContainerPolicy

Returns:

buildKeyFromJoinedRow

public java.lang.Object buildKeyFromJoinedRow(AbstractRecord row,
                                              JoinedAttributeManager joinManager,
                                              ObjectBuildingQuery query,
                                              CacheKey parentCacheKey,
                                              AbstractSession session,
                                              boolean isTargetProtected)

Extract the key for the map from the provided row.

Overrides:

buildKeyFromJoinedRow in class ContainerPolicy

Returns:

buildReferencesPKList

public java.lang.Object[] buildReferencesPKList(java.lang.Object container,
                                                AbstractSession session)

INTERNAL: This method will access the target relationship and create a list of information to rebuild the collection. For the MapContainerPolicy this return will consist of an array with serial Map entry key and value elements.

Overrides:

buildReferencesPKList in class MapContainerPolicy

See Also:

ObjectReferenceMapping.buildReferencesPKList, ContainerPolicy.buildReferencesPKList

cascadeDiscoverAndPersistUnregisteredNewObjects

public void cascadeDiscoverAndPersistUnregisteredNewObjects(java.lang.Object object,
                                                            java.util.Map newObjects,
                                                            java.util.Map unregisteredExistingObjects,
                                                            java.util.Map visitedObjects,
                                                            UnitOfWorkImpl uow,
                                                            java.util.Set cascadeErrors)

INTERNAL: Cascade discover and persist new objects during commit to the map key

Overrides:

cascadeDiscoverAndPersistUnregisteredNewObjects in class ContainerPolicy

cascadePerformRemoveIfRequired

public void cascadePerformRemoveIfRequired(java.lang.Object object,
                                           UnitOfWorkImpl uow,
                                           java.util.Map visitedObjects)

INTERNAL: Cascade registerNew to any mappings managed by the container policy. This will cascade the register to the key mapping.

Overrides:

cascadePerformRemoveIfRequired in class ContainerPolicy

cascadeRegisterNewIfRequired

public void cascadeRegisterNewIfRequired(java.lang.Object object,
                                         UnitOfWorkImpl uow,
                                         java.util.Map visitedObjects)

INTERNAL: Cascade registerNew to any mappings managed by the container policy. This will cascade the register to the key mapping.

Overrides:

cascadeRegisterNewIfRequired in class ContainerPolicy

clone

public java.lang.Object clone()

INTERNAL: The mapping clones itself to create deep copy.

Overrides:

clone in class ContainerPolicy

compareContainers

public boolean compareContainers(java.lang.Object firstObjectMap,
                                 java.lang.Object secondObjectMap)

INTERNAL: Return true if keys are the same. False otherwise

compareKeys

public boolean compareKeys(java.lang.Object sourceValue,
                           AbstractSession session)

INTERNAL: Return true if keys are the same in the source as the backup. False otherwise in the case of read-only compare against the original.

Overrides:

compareKeys in class MapContainerPolicy

createQueryKeyForMapKey

public QueryKey createQueryKeyForMapKey()

INTERNAL: Create a query key that links to the map key.

Overrides:

createQueryKeyForMapKey in class MapContainerPolicy

createWrappedObjectFromExistingWrappedObject

public java.lang.Object createWrappedObjectFromExistingWrappedObject(java.lang.Object wrappedObject,
                                                                     java.lang.Object parent,
                                                                     ClassDescriptor referenceDescriptor,
                                                                     MergeManager mergeManager,
                                                                     AbstractSession targetSession)

INTERNAL: This method will actually potentially wrap an object in two ways. It will first wrap the object based on the referenceDescriptor's wrapper policy. It will also potentially do some wrapping based on what is required by the container policy.

Overrides:

createWrappedObjectFromExistingWrappedObject in class MapContainerPolicy

parent - if this is an aggregate, the owner of the aggregate

Returns:

See Also:

MappedKeyMapContainerPolicy

convertClassNamesToClasses

public void convertClassNamesToClasses(java.lang.ClassLoader classLoader)

INTERNAL: Convert all the class-name-based settings in this ContainerPolicy to actual class-based settings

Overrides:

convertClassNamesToClasses in class MapContainerPolicy

Parameters:

classLoader -

deleteWrappedObject

public void deleteWrappedObject(java.lang.Object objectDeleted,
                                AbstractSession session)

INTERNAL: Delete the key and value of the passed association passed object.

Overrides:

deleteWrappedObject in class ContainerPolicy

See Also:

MappedKeyMapContainerPolicy

getAdditionalTablesForJoinQuery

public java.util.List<DatabaseTable> getAdditionalTablesForJoinQuery()

INTERNAL: Return any tables that will be required when this mapping is used as part of a join query.

Overrides:

getAdditionalTablesForJoinQuery in class ContainerPolicy

getAdditionalFieldsForJoin

public java.util.List<DatabaseField> getAdditionalFieldsForJoin(CollectionMapping baseMapping)

INTERNAL: Return any additional fields required by the policy for a fetch join.

Overrides:

getAdditionalFieldsForJoin in class ContainerPolicy

getForeignKeyFieldsForMapKey

public java.util.Map<DatabaseField,DatabaseField> getForeignKeyFieldsForMapKey()

INTERNAL: Return a Map of any foreign keys defined within the the MapKey.

getDescriptorForMapKey

public ClassDescriptor getDescriptorForMapKey()

INTERNAL: Return the reference descriptor for the map key if it exists.

Overrides:

getDescriptorForMapKey in class ContainerPolicy

getCloneDataFromChangeSet

public java.lang.Object getCloneDataFromChangeSet(ObjectChangeSet changeSet)

INTERNAL: Used when objects are added or removed during an update. This method returns either the clone from the ChangeSet or a packaged version of it that contains things like map keys.

Overrides:

getCloneDataFromChangeSet in class ContainerPolicy

getDirectKeyField

public DatabaseField getDirectKeyField(CollectionMapping baseMapping)

INTERNAL: Return the DatabaseField that represents the key in a DirectMapMapping. If the keyMapping is not a DirectMapping, this will return null.

Overrides:

getDirectKeyField in class MapContainerPolicy

getIdentityFieldsForMapKey

public java.util.List<DatabaseField> getIdentityFieldsForMapKey()

INTERNAL: Return the fields that make up the identity of the mapped object. For mappings with a primary key, it will be the set of fields in the primary key. For mappings without a primary key it will likely be all the fields.

Overrides:

getIdentityFieldsForMapKey in class ContainerPolicy

getKeyConverter

public Converter getKeyConverter()

INTERNAL: Get the Converter for the key of this mapping if one exists.

getKeyMapping

public MapKeyMapping getKeyMapping()

getKeyQuery

public DatabaseQuery getKeyQuery()

INTERNAL: Some map keys must be obtained from the database. This query is used to obtain the key.

getKeySelectionCriteria

public Expression getKeySelectionCriteria()

INTERNAL: Get the selection criteria for the map key.

Overrides:

getKeySelectionCriteria in class ContainerPolicy

getValueMapping

public MapComponentMapping getValueMapping()

initialize

public void initialize(AbstractSession session,
                       DatabaseTable keyTable)

INTERNAL: Initialize the key mapping

Overrides:

initialize in class ContainerPolicy

isMappedKeyMapPolicy

public boolean isMappedKeyMapPolicy()

Overrides:

isMappedKeyMapPolicy in class ContainerPolicy

isMapKeyAttribute

public boolean isMapKeyAttribute()

INTERNAL: Return whether a map key this container policy represents is an attribute By default this method will return false since only subclasses actually represent maps.

Overrides:

isMapKeyAttribute in class MapContainerPolicy

isMapKeyObject

public boolean isMapKeyObject()

INTERNAL: Return if the map key this container policy represents is a OneToOne.

Overrides:

isMapKeyObject in class ContainerPolicy

iterateOnMapKey

public void iterateOnMapKey(DescriptorIterator iterator,
                            java.lang.Object element)

INTERNAL: Used in Descriptor Iteration to iterate on map keys.

Overrides:

iterateOnMapKey in class ContainerPolicy

postCalculateChanges

public void postCalculateChanges(ObjectChangeSet ocs,
                                 ClassDescriptor referenceDescriptor,
                                 DatabaseMapping mapping,
                                 UnitOfWorkImpl uow)

INTERNAL: Add the provided object to the deleted objects list on the commit manager. This may be overridden by subclasses to process a composite object.

Overrides:

postCalculateChanges in class ContainerPolicy

See Also:

MappedKeyMapContainerPolicy

postCalculateChanges

public void postCalculateChanges(java.lang.Object key,
                                 java.lang.Object value,
                                 ClassDescriptor referenceDescriptor,
                                 DatabaseMapping mapping,
                                 UnitOfWorkImpl uow)

INTERNAL: Add the provided object to the deleted objects list on the commit manager. This may be overridden by subclasses to process a composite object.

Overrides:

postCalculateChanges in class ContainerPolicy

processAdditionalWritableMapKeyFields

public void processAdditionalWritableMapKeyFields(AbstractSession session)

INTERNAL: This method is used to check the key mapping to ensure that it does not write to a field that is written by another mapping. There are two possibilities: 1. The conflicting mapping has already been processed. In that case, we add MultipleWritableMappings exception to the integrity checker right away 2. There are no conflicting mappings. In that case, we store the list of fields that this mapping has processed on the descriptor for the target so they can be checked as the descriptor initializes.

Overrides:

processAdditionalWritableMapKeyFields in class ContainerPolicy

recordPrivateOwnedRemovals

public void recordPrivateOwnedRemovals(java.lang.Object object,
                                       ClassDescriptor referenceDescriptor,
                                       UnitOfWorkImpl uow)

INTERNAL: Add the key and value from provided association to the deleted objects list on the commit manager.

Overrides:

recordPrivateOwnedRemovals in class ContainerPolicy

requiresDataModificationEvents

public boolean requiresDataModificationEvents()

INTERNAL: Returns whether this ContainerPolicy requires data modification events when objects are added or deleted during update.

Overrides:

requiresDataModificationEvents in class ContainerPolicy

Returns:

keyFrom

public java.lang.Object keyFrom(java.lang.Object element,
                                AbstractSession session)

INTERNAL: Return the key for the specified element.

Overrides:

keyFrom in class MapContainerPolicy

postInitialize

public void postInitialize(AbstractSession session)

INTERNAL: Some subclasses need to post initialize mappings associated with them.

Overrides:

postInitialize in class ContainerPolicy

propogatePostDelete

public void propogatePostDelete(DeleteObjectQuery query,
                                java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePostDelete in class ContainerPolicy

propogatePostInsert

public void propogatePostInsert(WriteObjectQuery query,
                                java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePostInsert in class ContainerPolicy

propogatePostUpdate

public void propogatePostUpdate(WriteObjectQuery query,
                                java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePostUpdate in class ContainerPolicy

propogatePreDelete

public void propogatePreDelete(DeleteObjectQuery query,
                               java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePreDelete in class ContainerPolicy

propogatePreInsert

public void propogatePreInsert(WriteObjectQuery query,
                               java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePreInsert in class ContainerPolicy

propogatePreUpdate

public void propogatePreUpdate(WriteObjectQuery query,
                               java.lang.Object object)

INTERNAL: Propagate the postDeleteEvent to any additional objects the query is aware of

Overrides:

propogatePreUpdate in class ContainerPolicy

propagatesEventsToCollection

public boolean propagatesEventsToCollection()

INTERNAL: Returns true if the key mapping is an AggregateObjectMapping. Aggregates need events propagated to them because they are not explicitly deleted, updated or inserted

Overrides:

propagatesEventsToCollection in class ContainerPolicy

setKeyField

public void setKeyField(DatabaseField keyField,
                        ClassDescriptor descriptor)

INTERNAL: Set the DatabaseField that will represent the key in a DirectMapMapping.

setDescriptorForKeyMapping

public void setDescriptorForKeyMapping(ClassDescriptor descriptor)

INTERNAL: Used during initialization of DirectMapMapping. Sets the descriptor associated with the key.

setKeyConverter

public void setKeyConverter(Converter keyConverter,
                            DirectMapMapping mapping)

INTERNAL: Set a converter on the KeyField of a DirectCollectionMapping.

setKeyConverterClassName

public void setKeyConverterClassName(java.lang.String keyConverterClassName,
                                     DirectMapMapping mapping)

INTERNAL: Set the name of the class to be used as a converter for the key of a DirectMapMaping.

setKeyMapping

public void setKeyMapping(MapKeyMapping mapping)

setKeyQuery

public void setKeyQuery(DatabaseQuery keyQuery)

INTERNAL: Some map keys must be obtained from the database. This query is used to obtain the key

Parameters:

keyQuery -

setValueMapping

public void setValueMapping(MapComponentMapping mapping)

shouldIncludeKeyInDeleteEvent

public boolean shouldIncludeKeyInDeleteEvent()

INTERNAL: Return whether data for a map key must be included on a Delete datamodification event If the keyMapping is privateOwned, that data should be.

Overrides:

shouldIncludeKeyInDeleteEvent in class ContainerPolicy

shouldUpdateForeignKeysPostInsert

public boolean shouldUpdateForeignKeysPostInsert()

INTERNAL: Certain types of container policies require an extra update statement after a relationship is inserted. Return whether this update statement is required.

Overrides:

shouldUpdateForeignKeysPostInsert in class ContainerPolicy

updateJoinedMappingIndexesForMapKey

public int updateJoinedMappingIndexesForMapKey(java.util.Map<DatabaseMapping,java.lang.Object> indexList,
                                               int index)

INTERNAL: Update the joined mapping indices Adds the key mapping and it's index to the list of joined mappings.

Overrides:

updateJoinedMappingIndexesForMapKey in class ContainerPolicy

unwrapKey

public java.lang.Object unwrapKey(java.lang.Object key,
                                  AbstractSession session)

INTERNAL: Allow the key to be unwrapped. This will be overridden by container policies that allow keys that are entities.

Overrides:

unwrapKey in class MapContainerPolicy

valueFromPKList

public java.lang.Object valueFromPKList(java.lang.Object[] pks,
                                        AbstractRecord foreignKeys,
                                        ForeignReferenceMapping mapping,
                                        AbstractSession session)

INTERNAL: This method is used to load a relationship from a list of PKs. This list may be available if the relationship has been cached.

Overrides:

valueFromPKList in class MapContainerPolicy