EclipseLink 2.2.0, build 'v20110202-r8913' API Reference

org.eclipse.persistence.mappings
Class OneToOneMapping

java.lang.Object
  extended by org.eclipse.persistence.mappings.DatabaseMapping
      extended by org.eclipse.persistence.mappings.ForeignReferenceMapping
          extended by org.eclipse.persistence.mappings.ObjectReferenceMapping
              extended by org.eclipse.persistence.mappings.OneToOneMapping
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, MapComponentMapping, MapKeyMapping, RelationalMapping
Direct Known Subclasses:
ManyToOneMapping

public class OneToOneMapping
extends ObjectReferenceMapping
implements RelationalMapping, MapKeyMapping

Purpose: One to one mappings are used to represent a pointer references between two java objects. This mappings is usually represented by a single pointer (stored in an instance variable) between the source and target objects. In the relational database tables, these mappings are normally implemented using foreign keys.

See Also:
Serialized Form
Author:
Sati
Since:
TOPLink/Java 1.0

Nested Class Summary
 
Nested classes/interfaces inherited from class org.eclipse.persistence.mappings.DatabaseMapping
DatabaseMapping.WriteType
 
Field Summary
protected  boolean isOneToOneRelationship
          Define if this mapping is really for a OneToOne relationship.
 org.eclipse.persistence.internal.helper.DatabaseTable keyTableForMapKey
           
protected  RelationTableMechanism mechanism
          Mechanism holds relationTable and all fields and queries associated with it.
protected  Expression privateOwnedCriteria
           
protected static java.lang.String setObject
           
protected  boolean shouldVerifyDelete
          These are used for non-unit of work modification to check if the value of the 1-1 was changed and a deletion is required.
protected  java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> sourceToTargetKeyFields
          Maps the source foreign/primary key fields to the target primary/foreign key fields.
protected  java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> targetToSourceKeyFields
          Maps the target primary/foreign key fields to the source foreign/primary key fields.
 
Fields inherited from class org.eclipse.persistence.mappings.ObjectReferenceMapping
foreignKeyFields, isForeignKeyRelationship
 
Fields inherited from class org.eclipse.persistence.mappings.ForeignReferenceMapping
batchFetchType, cascadeDetach, cascadeMerge, cascadePersist, cascadeRefresh, cascadeRemove, forceInitializationOfSelectionCriteria, hasCustomSelectionQuery, indirectionPolicy, INNER_JOIN, isCascadeOnDeleteSetOnDatabase, isPrivateOwned, joinFetch, NONE, OUTER_JOIN, partitioningPolicy, partitioningPolicyName, QUERY_BATCH_PARAMETER, referenceClass, referenceClassName, referenceDescriptor, relationshipPartner, relationshipPartnerAttributeName, requiresTransientWeavedFields, selectionQuery, tempInitSession
 
Fields inherited from class org.eclipse.persistence.mappings.DatabaseMapping
attributeAccessor, attributeName, derivedIdMapping, derivesId, descriptor, fields, isCacheable, isJPAId, isLazy, isMapKeyMapping, isOptional, isPrimaryKeyMapping, isReadOnly, isRemotelyInitialized, mapsIdValue, NO_FIELDS, NO_WEIGHT, properties, weight, WEIGHT_AGGREGATE, WEIGHT_DIRECT, WEIGHT_TO_ONE, WEIGHT_TRANSFORM
 
Constructor Summary
OneToOneMapping()
          PUBLIC: Default constructor.
 
Method Summary
 void addAdditionalFieldsToQuery(ReadQuery selectionQuery, Expression baseExpression)
          INTERNAL: Used when initializing queries for mappings that use a Map.
 void addFieldsForMapKey(org.eclipse.persistence.internal.sessions.AbstractRecord joinRow)
          INTERNAL: Used when initializing queries for mappings that use a Map Called when the insert query is being initialized to ensure the fields for the map key are in the insert query
 void addForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField sourceForeignKeyField, org.eclipse.persistence.internal.helper.DatabaseField targetPrimaryKeyField)
          PUBLIC: Define the foreign key relationship in the 1-1 mapping.
 void addForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName, java.lang.String targetPrimaryKeyFieldName)
          PUBLIC: Define the foreign key relationship in the 1-1 mapping.
 void addKeyToDeletedObjectsList(java.lang.Object object, java.util.Map deletedObjects)
          INTERNAL: For mappings used as MapKeys in MappedKeyContainerPolicy.
 void addTargetForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField targetForeignKeyField, org.eclipse.persistence.internal.helper.DatabaseField sourcePrimaryKeyField)
          PUBLIC: Define the target foreign key relationship in the 1-1 mapping.
 void addTargetForeignKeyFieldName(java.lang.String targetForeignKeyFieldName, java.lang.String sourcePrimaryKeyFieldName)
          PUBLIC: Define the target foreign key relationship in the 1-1 mapping.
protected  Expression buildBatchCriteria(ExpressionBuilder builder, ObjectLevelReadQuery query)
          INTERNAL: Return the selection criteria used to IN batch fetching.
 java.lang.Object buildElementClone(java.lang.Object attributeValue, java.lang.Object parent, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession, boolean isExisting)
          Build a clone of the given element in a unitOfWork.
 Expression buildObjectJoinExpression(Expression expression, Expression argument, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Used to allow object level comparisons.
 Expression buildObjectJoinExpression(Expression expression, java.lang.Object value, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Used to allow object level comparisons.
 Expression buildSelectionCriteria()
          This method would allow customers to get the potential selection criteria for a mapping prior to initialization.
 Expression buildSelectionCriteria(boolean useParameter, boolean usePreviousSelectionCriteria)
          INTERNAL: Build the selection criteria for this mapping.
 ReadQuery buildSelectionQueryForDirectCollectionKeyMapping(org.eclipse.persistence.internal.queries.ContainerPolicy containerPolicy)
          INTERNAL: Certain key mappings favor different types of selection query.
 void buildShallowOriginalFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, java.lang.Object original, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery query, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
          INTERNAL: Builds a shallow original object.
protected  java.lang.Object checkCacheForBatchKey(org.eclipse.persistence.internal.sessions.AbstractRecord sourceRow, java.lang.Object foreignKey, java.util.Map batchObjects, ReadQuery batchQuery, ObjectLevelReadQuery originalQuery, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Check if the target object is in the cache if possible based on the target key value.
 java.lang.Object clone()
          INTERNAL: This methods clones all the fields and ensures that each collection refers to the same clones.
protected  java.util.Vector<org.eclipse.persistence.internal.helper.DatabaseField> collectFields()
          INTERNAL: Return all the fields populated by this mapping, these are foreign keys only.
 java.lang.Object createMapComponentFromJoinedRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractSession session, boolean isTargetProtected)
          INTERNAL Called when a DatabaseMapping is used to map the key in a collection.
 java.lang.Object createMapComponentFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractSession session, boolean isTargetProtected)
          INTERNAL Called when a DatabaseMapping is used to map the key in a collection.
 java.lang.Object createMapComponentFromSerializableKeyInfo(java.lang.Object keyInfo, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Create an instance of the Key object from the key information extracted from the map.
 QueryKey createQueryKeyForMapKey()
          INTERNAL: Create a query key that links to the map key
 java.lang.Object createSerializableMapKeyInfo(java.lang.Object key, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Creates the Array of simple types used to recreate this map.
 void deleteMapKey(java.lang.Object objectDeleted, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: For mappings used as MapKeys in MappedKeyContainerPolicy, Delete the passed object if necessary.
protected  void executeBatchQuery(DatabaseQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, java.util.Map referenceObjectsByKey, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord translationRow)
          INTERNAL: Prepare and execute the batch query and store the results for each source object in a map keyed by the mappings source keys of the source objects.
 void extendPessimisticLockScopeInSourceQuery(ObjectLevelReadQuery sourceQuery)
          INTERNAL: Called only if both shouldExtendPessimisticLockScope and shouldExtendPessimisticLockScopeInSourceQuery are true.
protected  void extendPessimisticLockScopeInTargetQuery(ObjectLevelReadQuery targetQuery, ObjectBuildingQuery sourceQuery)
          INTERNAL: Adds locking clause to the target query to extend pessimistic lock scope.
protected  java.lang.Object extractBatchKeyFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Extract the foreign key value from the source row.
 java.util.Map extractIdentityFieldsForQuery(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Extract the fields for the Map key from the object to use in a query
protected  java.lang.Object extractKeyFromReferenceObject(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Extract the key value from the reference object.
 java.lang.Object extractPrimaryKeysForReferenceObjectFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row)
          INTERNAL: Return the primary key for the reference object (i.e. the object object referenced by domainObject and specified by mapping).
 Expression getAdditionalSelectionCriteriaForMapKey()
          INTERNAL: Return the selection criteria necessary to select the target object when this mapping is a map key.
 java.util.List<org.eclipse.persistence.internal.helper.DatabaseTable> getAdditionalTablesForJoinQuery()
          INTERNAL: Return any tables that will be required when this mapping is used as part of a join query
 java.util.List<org.eclipse.persistence.internal.helper.DatabaseField> getAllFieldsForMapKey()
          INTERNAL: Get all the fields for the map key
protected  ReadQuery getExtendPessimisticLockScopeDedicatedQuery(org.eclipse.persistence.internal.sessions.AbstractSession session, short lockMode)
          INTERNAL: Should be overridden by subclass that allows setting extendPessimisticLockScope to DEDICATED_QUERY.
 java.lang.Class getFieldClassification(org.eclipse.persistence.internal.helper.DatabaseField fieldToClassify)
          INTERNAL: Return the classification for the field contained in the mapping.
 java.util.Collection getFieldsForTranslationInAggregate()
          INTERNAL: Return source key fields for translation by an AggregateObjectMapping
 java.util.Vector getForeignKeyFieldNames()
          PUBLIC: Return the foreign key field names associated with the mapping.
 java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getForeignKeyFieldsForMapKey()
          INTERNAL: Return a Map of any foreign keys defined within the the MapKey
protected  java.util.Map getForeignKeysToPrimaryKeys()
          Return the appropriate map that maps the "foreign keys" to the "primary keys".
 java.util.List<org.eclipse.persistence.internal.helper.DatabaseField> getIdentityFieldsForMapKey()
          INTERNAL: Return the fields that make up the identity of the mapped object.
 java.lang.Class getMapKeyTargetType()
          INTERNAL: Return the class this key mapping maps or the descriptor for it
 ObjectLevelReadQuery getNestedJoinQuery(org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectLevelReadQuery query, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Return the query that is used when this mapping is part of a joined relationship This method is used when this mapping is used to map the key in a Map
 java.util.Vector getOrderedForeignKeyFields()
          INTERNAL: Return a vector of the foreign key fields in the same order as the corresponding primary key fields are in their descriptor.
protected  ClassDescriptor getPrimaryKeyDescriptor()
          Return the descriptor for whichever side of the relation has the "primary key".
 Expression getPrivateOwnedCriteria()
          INTERNAL: The private owned criteria is only used outside of the unit of work to compare the previous value of the reference.
 org.eclipse.persistence.internal.helper.DatabaseTable getRelationTable()
          PUBLIC: Return RelationTable.
 RelationTableMechanism getRelationTableMechanism()
          PUBLIC: Returns RelationTableMechanism that may be owned by the mapping, that allows to configure the mapping to use relation table (just like ManyToManyMapping).
 java.util.Vector getSourceToTargetKeyFieldAssociations()
          INTERNAL: Return a collection of the source to target field value associations.
 java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getSourceToTargetKeyFields()
          INTERNAL: Returns the source keys to target keys fields association.
 java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getTargetToSourceKeyFields()
          INTERNAL: Returns the target keys to source keys fields association.
 java.lang.Object getTargetVersionOfSourceObject(java.lang.Object object, java.lang.Object parent, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession)
          INTERNAL: If required, get the targetVersion of the source object from the merge manager Used with MapKeyContainerPolicy to abstract getting the target version of a source key
 boolean hasRelationTable()
          PUBLIC: Indicates whether the mapping has RelationTable.
 boolean hasRelationTableMechanism()
          PUBLIC: Indicates whether the mapping has RelationTableMechanism.
 void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Initialize the mapping.
protected  void initializeForeignKeys(org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: The foreign keys primary keys are stored as database fields in the map.
protected  void initializeForeignKeysWithDefaults(org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: The foreign keys primary keys are stored as database fields in the map.
protected  void initializePrivateOwnedCriteria()
          INTERNAL: Selection criteria is created with source foreign keys and target keys.
 boolean isCascadedLockingSupported()
          INTERNAL Return true if this mapping supports cascaded version optimistic locking.
 boolean isJoiningSupported()
          INTERNAL: Return if this mapping support joining.
 boolean isOneToOneMapping()
          INTERNAL:
 boolean isOneToOneRelationship()
          Return if this mapping is really for a OneToOne relationship.
 boolean isOwned()
          INTERNAL:
 boolean isRelationalMapping()
          INTERNAL:
 void iterateOnMapKey(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator, java.lang.Object element)
          INTERNAL: Called when iterating through descriptors to handle iteration on this mapping when it is used as a MapKey
 void performDataModificationEvent(java.lang.Object[] event, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Perform the commit event.
 void postInitializeMapKey(org.eclipse.persistence.internal.queries.MappedKeyMapContainerPolicy policy)
          INTERNAL: Need to set the field type for the foreign key fields for a map key, as the fields are not contained in any descriptor.
 void postInsert(WriteObjectQuery query)
          INTERNAL: Insert into relation table.
protected  void postPrepareNestedBatchQuery(ReadQuery batchQuery, ObjectLevelReadQuery query)
          INTERNAL: Allow the mapping the do any further batch preparation.
 void postUpdate(WriteObjectQuery query)
          INTERNAL: Update the relation table with the entries related to this mapping.
 void preDelete(DeleteObjectQuery query)
          INTERNAL: Delete privately owned parts
 void preinitializeMapKey(org.eclipse.persistence.internal.helper.DatabaseTable table)
          INTERNAL: Making any mapping changes necessary to use a the mapping as a map key prior to initializing the mapping
 void prepareCascadeLockingPolicy()
          INTERNAL: Prepare a cascade locking policy.
protected  java.lang.Object readPrivateOwnedForObject(ObjectLevelModifyQuery modifyQuery)
          INTERNAL: Reads the private owned object.
 void rehashFieldDependancies(org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Rehash any map based on fields.
 boolean requiresDataModificationEventsForMapKey()
          INTERNAL: Return whether this mapping requires extra queries to update the rows if it is used as a key in a map.
 void setForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName)
          PUBLIC: Define the foreign key relationship in the 1-1 mapping.
 void setForeignKeyFieldNames(java.util.Vector fieldNames)
          PUBLIC: Return the foreign key field names associated with the mapping.
 void setIsOneToOneRelationship(boolean isOneToOneRelationship)
          Define if this mapping is really for a OneToOne relationship.
protected  void setPrivateOwnedCriteria(Expression expression)
          INTERNAL: Private owned criteria is used to verify the deletion of the target.
 void setRelationTableMechanism(RelationTableMechanism mechanism)
          PUBLIC: Set RelationTableMechanism into the mapping, that allows to configure the mapping to use relation table (just like ManyToManyMapping).
 void setShouldVerifyDelete(boolean shouldVerifyDelete)
          PUBLIC: Verify delete is used during delete and update on private 1:1's outside of a unit of work only.
 void setSourceToTargetKeyFieldAssociations(java.util.Vector sourceToTargetKeyFieldAssociations)
          INTERNAL: Set a collection of the source to target field associations.
 void setSourceToTargetKeyFields(java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> sourceToTargetKeyFields)
          INTERNAL: Set the source keys to target keys fields association.
 void setTargetForeignKeyFieldName(java.lang.String targetForeignKeyFieldName)
          PUBLIC: Define the target foreign key relationship in the 1-1 mapping.
 void setTargetToSourceKeyFields(java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> targetToSourceKeyFields)
          INTERNAL: Set the target keys to source keys fields association.
 boolean shouldVerifyDelete()
          PUBLIC: Verify delete is used during delete and update outside of a unit of work only.
 java.lang.Object unwrapKey(java.lang.Object key, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Allow the key mapping to unwrap the object.
 java.lang.Object valueFromObject(java.lang.Object object, org.eclipse.persistence.internal.helper.DatabaseField field, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Get a value from the object and set that in the respective field of the row.
protected  java.lang.Object valueFromRowInternal(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
          INTERNAL: Return the value of the field from the row or a value holder on the query to obtain the object.
protected  java.lang.Object valueFromRowInternalWithJoin(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected)
          INTERNAL: Return the value of the field from the row or a value holder on the query to obtain the object.
 java.lang.Object wrapKey(java.lang.Object key, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Allow the key mapping to wrap the object.
 void writeFromAttributeIntoRow(java.lang.Object attribute, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: A subclass should implement this method if it wants different behavior.
 void writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType)
          INTERNAL: Get a value from the object and set that in the respective field of the row.
 void writeFromObjectIntoRowForShallowInsert(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: This row is built for shallow insert which happens in case of bidirectional inserts.
 void writeFromObjectIntoRowForShallowInsertWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord ChangeRecord, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: This row is built for shallow insert which happens in case of bidirectional inserts.
 void writeFromObjectIntoRowWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType)
          INTERNAL: Get a value from the object and set that in the respective field of the row.
 void writeInsertFieldsIntoRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Write fields needed for insert into the template for with null values.
 
Methods inherited from class org.eclipse.persistence.mappings.ObjectReferenceMapping
buildBackupCloneForPartObject, buildChangeRecord, buildCloneForPartObject, buildCopy, buildExpression, buildReferencesPKList, buildTargetInterfaces, buildUnitofWorkCloneForPartObject, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemoveIfRequired, cascadePerformRemoveIfRequired, cascadePerformRemovePrivateOwnedObjectFromChangeSetIfRequired, cascadeRegisterNewIfRequired, cascadeRegisterNewIfRequired, collectQueryParameters, compareForChange, compareObjectsWithoutPrivateOwned, compareObjectsWithPrivateOwned, createCloneValueHolder, extractPrimaryKeyRowForSourceObject, extractPrimaryKeysForReferenceObject, extractPrimaryKeysFromRealReferenceObject, fixRealObjectReferences, getDescriptorForTarget, getForeignKeyFields, getPrimaryKeyForObject, getRealAttributeValueFromAttribute, hasConstraintDependency, insert, internalBuildChangeRecord, isChangeTrackingSupported, isForeignKeyRelationship, isObjectReferenceMapping, iterateOnRealAttributeValue, mergeChangesIntoObject, mergeIntoObject, postCalculateChanges, postDelete, preInitialize, preInsert, preUpdate, recordPrivateOwnedRemovals, setForeignKeyFields, setIsForeignKeyRelationship, setNewValueInChangeRecord, update, updateChangeRecord, useProxyIndirection, useProxyIndirection, useProxyIndirection, valueFromPKList, verifyDelete, writeFromObjectIntoRowForUpdate, writeFromObjectIntoRowForWhereClause
 
Methods inherited from class org.eclipse.persistence.mappings.ForeignReferenceMapping
batchedValueFromRow, buildBackupClone, buildClone, buildCloneFromRow, compareObjects, convertClassNamesToClasses, dontDoMerge, dontUseBatchReading, dontUseIndirection, extractResultFromBatchQuery, fixObjectReferences, getAttributeValueFromObject, getAttributeValueWithClonedValueHolders, getBatchFetchType, getIndirectionPolicy, getJoinCriteria, getJoinFetch, getObjectCorrespondingTo, getPartitioningPolicy, getPartitioningPolicyName, getReferenceClass, getReferenceClassName, getReferenceDescriptor, getRelationshipPartner, getRelationshipPartnerAttributeName, getSelectionCriteria, getSelectionQuery, getTempSession, getValueFromRemoteValueHolder, hasCustomSelectionQuery, hasDependency, initializeReferenceDescriptor, initializeSelectionQuery, instantiateAttribute, isAttributeValueInstantiated, isCascadeDetach, isCascadeMerge, isCascadeOnDeleteSetOnDatabase, isCascadePersist, isCascadeRefresh, isCascadeRemove, isExtendingPessimisticLockScope, isForeignReferenceMapping, isInnerJoinFetched, isJoinFetched, isLazy, isLockableMapping, isOuterJoinFetched, isPrivateOwned, iterate, mergeRemoteValueHolder, postInitialize, prepareHistoricalQuery, prepareNestedBatchQuery, prepareNestedJoinQueryClone, prepareNestedJoins, privateOwnedRelationship, readFromRowIntoObject, remoteInitialization, replaceValueHoldersIn, requiresTransientWeavedFields, setBatchFetchType, setCascadeAll, setCascadeDetach, setCascadeMerge, setCascadePersist, setCascadeRefresh, setCascadeRemove, setCustomSelectionQuery, setForceInitializationOfSelectionCriteria, setHasCustomSelectionQuery, setIndirectionPolicy, setIsCacheable, setIsCascadeOnDeleteSetOnDatabase, setIsPrivateOwned, setJoinFetch, setPartitioningPolicy, setPartitioningPolicyName, setRealAttributeValueInObject, setReferenceClass, setReferenceClassName, setReferenceDescriptor, setRelationshipPartner, setRelationshipPartnerAttributeName, setRequiresTransientWeavedFields, setSelectionCall, setSelectionCriteria, setSelectionQuery, setSelectionSQLString, setShouldExtendPessimisticLockScope, setTempSession, setUsesBatchReading, setUsesIndirection, shouldExtendPessimisticLockScope, shouldExtendPessimisticLockScopeInDedicatedQuery, shouldExtendPessimisticLockScopeInSourceQuery, shouldExtendPessimisticLockScopeInTargetQuery, shouldForceInitializationOfSelectionCriteria, shouldInitializeSelectionCriteria, shouldMergeCascadeParts, shouldMergeCascadeReference, shouldObjectModifyCascadeToParts, shouldUseBatchReading, shouldUseValueFromRowWithJoin, trimRowForJoin, trimRowForJoin, useBasicIndirection, useBatchReading, useContainerIndirection, useInnerJoinFetch, useOuterJoinFetch, usesIndirection, useWeavedIndirection, validateBeforeInitialization, valueFromRow
 
Methods inherited from class org.eclipse.persistence.mappings.DatabaseMapping
buildContainerClone, calculateDeferredChanges, cascadeMerge_, cloneFields, derivesId, earlyPreDelete, extractNestedExpressions, getAttributeAccessor, getAttributeClassification, getAttributeName, getContainerPolicy, getDerivedIdMapping, getDescriptor, getField, getFields, getGetMethodName, getMapsIdValue, getProperties, getProperty, getRealAttributeValueFromObject, getRealCollectionAttributeValueFromObject, getSelectFields, getSelectTables, getSetMethodName, getWeight, hasInverseConstraintDependency, hasMapsIdValue, hasRootExpressionThatShouldUseOuterJoin, isAbstractCompositeCollectionMapping, isAbstractCompositeDirectCollectionMapping, isAbstractCompositeObjectMapping, isAbstractDirectMapping, isAggregateCollectionMapping, isAggregateMapping, isAggregateObjectMapping, isCacheable, isCandidateForPrivateOwnedRemoval, isCloningRequired, isCollectionMapping, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isEISMapping, isJPAId, isManyToManyMapping, isManyToOneMapping, isMapKeyMapping, isNestedTableMapping, isOneToManyMapping, isOptional, isPrimaryKeyMapping, isReadOnly, isReferenceMapping, isRemotelyInitialized, isStructureMapping, isTransformationMapping, isUnidirectionalOneToManyMapping, isUsingMethodAccess, isVariableOneToOneMapping, isWriteOnly, isXMLMapping, postCalculateChangesOnDeleted, readFromResultSetIntoObject, readOnly, readWrite, remotelyInitialized, setAttributeAccessor, setAttributeName, setAttributeValueInObject, setChangeListener, setDerivedIdMapping, setDerivesId, setDescriptor, setFields, setGetMethodName, setIsJPAId, setIsLazy, setIsMapKeyMapping, setIsOptional, setIsPrimaryKeyMapping, setIsReadOnly, setMapsIdValue, setProperties, setProperty, setSetMethodName, setWeight, simpleAddToCollectionChangeRecord, simpleRemoveFromCollectionChangeRecord, toString, updateCollectionChangeRecord, validateAfterInitialization, valueFromResultSet, valueFromRow, writeUpdateFieldsIntoRow
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.eclipse.persistence.mappings.foundation.MapKeyMapping
cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemoveIfRequired, cascadeRegisterNewIfRequired, getReferenceDescriptor
 

Field Detail

sourceToTargetKeyFields

protected java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> sourceToTargetKeyFields
Maps the source foreign/primary key fields to the target primary/foreign key fields.


targetToSourceKeyFields

protected java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> targetToSourceKeyFields
Maps the target primary/foreign key fields to the source foreign/primary key fields.


shouldVerifyDelete

protected boolean shouldVerifyDelete
These are used for non-unit of work modification to check if the value of the 1-1 was changed and a deletion is required.


privateOwnedCriteria

protected transient Expression privateOwnedCriteria

keyTableForMapKey

public org.eclipse.persistence.internal.helper.DatabaseTable keyTableForMapKey

setObject

protected static final java.lang.String setObject
See Also:
Constant Field Values

mechanism

protected transient RelationTableMechanism mechanism
Mechanism holds relationTable and all fields and queries associated with it.


isOneToOneRelationship

protected boolean isOneToOneRelationship
Define if this mapping is really for a OneToOne relationship. This is a backward compatibility issue, in that before the ManyToOneMapping was created OneToOneMapping was used for both.

Constructor Detail

OneToOneMapping

public OneToOneMapping()
PUBLIC: Default constructor.

Method Detail

isRelationalMapping

public boolean isRelationalMapping()
INTERNAL:

Overrides:
isRelationalMapping in class DatabaseMapping

addAdditionalFieldsToQuery

public void addAdditionalFieldsToQuery(ReadQuery selectionQuery,
                                       Expression baseExpression)
INTERNAL: Used when initializing queries for mappings that use a Map. Called when the selection query is being initialized to add the fields for the map key to the query.

Specified by:
addAdditionalFieldsToQuery in interface MapKeyMapping

addFieldsForMapKey

public void addFieldsForMapKey(org.eclipse.persistence.internal.sessions.AbstractRecord joinRow)
INTERNAL: Used when initializing queries for mappings that use a Map Called when the insert query is being initialized to ensure the fields for the map key are in the insert query

Specified by:
addFieldsForMapKey in interface MapKeyMapping

addForeignKeyField

public void addForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField sourceForeignKeyField,
                               org.eclipse.persistence.internal.helper.DatabaseField targetPrimaryKeyField)
PUBLIC: Define the foreign key relationship in the 1-1 mapping. This method is used for composite foreign key relationships, that is the source object's table has multiple foreign key fields to the target object's primary key fields. Both the source foreign key field and the target foreign key field must be specified. When a foreign key is specified TopLink will automatically populate the value for that field from the target object when the object is written to the database. If the foreign key is also mapped through a direct-to-field then the direct-to-field must be set read-only.


addForeignKeyFieldName

public void addForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName,
                                   java.lang.String targetPrimaryKeyFieldName)
PUBLIC: Define the foreign key relationship in the 1-1 mapping. This method is used for composite foreign key relationships, that is the source object's table has multiple foreign key fields to the target object's primary key fields. Both the source foreign key field name and the target foreign key field name must be specified. When a foreign key is specified TopLink will automatically populate the value for that field from the target object when the object is written to the database. If the foreign key is also mapped through a direct-to-field then the direct-to-field must be set read-only.


addTargetForeignKeyField

public void addTargetForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField targetForeignKeyField,
                                     org.eclipse.persistence.internal.helper.DatabaseField sourcePrimaryKeyField)
PUBLIC: Define the target foreign key relationship in the 1-1 mapping. This method is used for composite target foreign key relationships, that is the target object's table has multiple foreign key fields to the source object's primary key fields. Both the target foreign key field and the source primary key field must be specified. The distinction between a foreign key and target foreign key is that the 1-1 mapping will not populate the target foreign key value when written (because it is in the target table). Normally 1-1's are through foreign keys but in bi-directional 1-1's the back reference will be a target foreign key. In obscure composite legacy data models a 1-1 may consist of a foreign key part and a target foreign key part, in this case both method will be called with the correct parts.


addTargetForeignKeyFieldName

public void addTargetForeignKeyFieldName(java.lang.String targetForeignKeyFieldName,
                                         java.lang.String sourcePrimaryKeyFieldName)
PUBLIC: Define the target foreign key relationship in the 1-1 mapping. This method is used for composite target foreign key relationships, that is the target object's table has multiple foreign key fields to the source object's primary key fields. Both the target foreign key field name and the source primary key field name must be specified. The distinction between a foreign key and target foreign key is that the 1-1 mapping will not populate the target foreign key value when written (because it is in the target table). Normally 1-1's are through foreign keys but in bi-directional 1-1's the back reference will be a target foreign key. In obscure composite legacy data models a 1-1 may consist of a foreign key part and a target foreign key part, in this case both method will be called with the correct parts.


addKeyToDeletedObjectsList

public void addKeyToDeletedObjectsList(java.lang.Object object,
                                       java.util.Map deletedObjects)
INTERNAL: For mappings used as MapKeys in MappedKeyContainerPolicy. Add the target of this mapping to the deleted objects list if necessary This method is used for removal of private owned relationships.

Specified by:
addKeyToDeletedObjectsList in interface MapKeyMapping

buildElementClone

public java.lang.Object buildElementClone(java.lang.Object attributeValue,
                                          java.lang.Object parent,
                                          org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey,
                                          org.eclipse.persistence.internal.sessions.AbstractSession cloningSession,
                                          boolean isExisting)
Build a clone of the given element in a unitOfWork.

Specified by:
buildElementClone in interface MapKeyMapping
Returns:

buildObjectJoinExpression

public Expression buildObjectJoinExpression(Expression expression,
                                            java.lang.Object value,
                                            org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Used to allow object level comparisons.

Overrides:
buildObjectJoinExpression in class DatabaseMapping

buildObjectJoinExpression

public Expression buildObjectJoinExpression(Expression expression,
                                            Expression argument,
                                            org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Used to allow object level comparisons.

Overrides:
buildObjectJoinExpression in class DatabaseMapping

buildSelectionQueryForDirectCollectionKeyMapping

public ReadQuery buildSelectionQueryForDirectCollectionKeyMapping(org.eclipse.persistence.internal.queries.ContainerPolicy containerPolicy)
INTERNAL: Certain key mappings favor different types of selection query. Return the appropriate type of selectionQuery

Specified by:
buildSelectionQueryForDirectCollectionKeyMapping in interface MapKeyMapping
Returns:

clone

public java.lang.Object clone()
INTERNAL: This methods clones all the fields and ensures that each collection refers to the same clones.

Overrides:
clone in class ForeignReferenceMapping

createMapComponentFromRow

public java.lang.Object createMapComponentFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow,
                                                  ObjectBuildingQuery query,
                                                  org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                                  org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                  boolean isTargetProtected)
INTERNAL Called when a DatabaseMapping is used to map the key in a collection. Returns the key.

Specified by:
createMapComponentFromRow in interface MapComponentMapping

createSerializableMapKeyInfo

public java.lang.Object createSerializableMapKeyInfo(java.lang.Object key,
                                                     org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Creates the Array of simple types used to recreate this map.

Specified by:
createSerializableMapKeyInfo in interface MapKeyMapping

createMapComponentFromSerializableKeyInfo

public java.lang.Object createMapComponentFromSerializableKeyInfo(java.lang.Object keyInfo,
                                                                  org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Create an instance of the Key object from the key information extracted from the map. This may return the value directly in case of a simple key or will be used as the FK to load a related entity.

Specified by:
createMapComponentFromSerializableKeyInfo in interface MapKeyMapping

createMapComponentFromJoinedRow

public java.lang.Object createMapComponentFromJoinedRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow,
                                                        org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                                        ObjectBuildingQuery query,
                                                        org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                                        org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                        boolean isTargetProtected)
INTERNAL Called when a DatabaseMapping is used to map the key in a collection. Returns the key.

Specified by:
createMapComponentFromJoinedRow in interface MapKeyMapping

createQueryKeyForMapKey

public QueryKey createQueryKeyForMapKey()
INTERNAL: Create a query key that links to the map key

Specified by:
createQueryKeyForMapKey in interface MapKeyMapping
Returns:

deleteMapKey

public void deleteMapKey(java.lang.Object objectDeleted,
                         org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: For mappings used as MapKeys in MappedKeyContainerPolicy, Delete the passed object if necessary. This method is used for removal of private owned relationships

Specified by:
deleteMapKey in interface MapKeyMapping
Parameters:
objectDeleted -
session -

extendPessimisticLockScopeInTargetQuery

protected void extendPessimisticLockScopeInTargetQuery(ObjectLevelReadQuery targetQuery,
                                                       ObjectBuildingQuery sourceQuery)
INTERNAL: Adds locking clause to the target query to extend pessimistic lock scope.

Overrides:
extendPessimisticLockScopeInTargetQuery in class ForeignReferenceMapping

extendPessimisticLockScopeInSourceQuery

public void extendPessimisticLockScopeInSourceQuery(ObjectLevelReadQuery sourceQuery)
INTERNAL: Called only if both shouldExtendPessimisticLockScope and shouldExtendPessimisticLockScopeInSourceQuery are true. Adds fields to be locked to the where clause of the source query. Note that the sourceQuery must be ObjectLevelReadQuery so that it has ExpressionBuilder. This method must be implemented in subclasses that allow setting shouldExtendPessimisticLockScopeInSourceQuery to true.

Overrides:
extendPessimisticLockScopeInSourceQuery in class ForeignReferenceMapping

extractBatchKeyFromRow

protected java.lang.Object extractBatchKeyFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                                  org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Extract the foreign key value from the source row.

Overrides:
extractBatchKeyFromRow in class ForeignReferenceMapping

extractIdentityFieldsForQuery

public java.util.Map extractIdentityFieldsForQuery(java.lang.Object object,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Extract the fields for the Map key from the object to use in a query

Specified by:
extractIdentityFieldsForQuery in interface MapKeyMapping
Returns:

extractKeyFromReferenceObject

protected java.lang.Object extractKeyFromReferenceObject(java.lang.Object object,
                                                         org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Extract the key value from the reference object.


extractPrimaryKeysForReferenceObjectFromRow

public java.lang.Object extractPrimaryKeysForReferenceObjectFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row)
INTERNAL: Return the primary key for the reference object (i.e. the object object referenced by domainObject and specified by mapping). This key will be used by a RemoteValueHolder.

Overrides:
extractPrimaryKeysForReferenceObjectFromRow in class ObjectReferenceMapping

postPrepareNestedBatchQuery

protected void postPrepareNestedBatchQuery(ReadQuery batchQuery,
                                           ObjectLevelReadQuery query)
INTERNAL: Allow the mapping the do any further batch preparation.

Overrides:
postPrepareNestedBatchQuery in class ForeignReferenceMapping

buildBatchCriteria

protected Expression buildBatchCriteria(ExpressionBuilder builder,
                                        ObjectLevelReadQuery query)
INTERNAL: Return the selection criteria used to IN batch fetching.

Overrides:
buildBatchCriteria in class ForeignReferenceMapping

executeBatchQuery

protected void executeBatchQuery(DatabaseQuery query,
                                 org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                 java.util.Map referenceObjectsByKey,
                                 org.eclipse.persistence.internal.sessions.AbstractSession session,
                                 org.eclipse.persistence.internal.sessions.AbstractRecord translationRow)
INTERNAL: Prepare and execute the batch query and store the results for each source object in a map keyed by the mappings source keys of the source objects.

Overrides:
executeBatchQuery in class ForeignReferenceMapping

checkCacheForBatchKey

protected java.lang.Object checkCacheForBatchKey(org.eclipse.persistence.internal.sessions.AbstractRecord sourceRow,
                                                 java.lang.Object foreignKey,
                                                 java.util.Map batchObjects,
                                                 ReadQuery batchQuery,
                                                 ObjectLevelReadQuery originalQuery,
                                                 org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Check if the target object is in the cache if possible based on the target key value. Return null if the target key is not the primary key, or if the query is refreshing.

Overrides:
checkCacheForBatchKey in class ForeignReferenceMapping

getAdditionalSelectionCriteriaForMapKey

public Expression getAdditionalSelectionCriteriaForMapKey()
INTERNAL: Return the selection criteria necessary to select the target object when this mapping is a map key.

Specified by:
getAdditionalSelectionCriteriaForMapKey in interface MapKeyMapping
Returns:

getAdditionalTablesForJoinQuery

public java.util.List<org.eclipse.persistence.internal.helper.DatabaseTable> getAdditionalTablesForJoinQuery()
INTERNAL: Return any tables that will be required when this mapping is used as part of a join query

Specified by:
getAdditionalTablesForJoinQuery in interface MapKeyMapping
Returns:

getExtendPessimisticLockScopeDedicatedQuery

protected ReadQuery getExtendPessimisticLockScopeDedicatedQuery(org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                                short lockMode)
INTERNAL: Should be overridden by subclass that allows setting extendPessimisticLockScope to DEDICATED_QUERY.

Overrides:
getExtendPessimisticLockScopeDedicatedQuery in class ForeignReferenceMapping

getFieldClassification

public java.lang.Class getFieldClassification(org.eclipse.persistence.internal.helper.DatabaseField fieldToClassify)
                                       throws DescriptorException
INTERNAL: Return the classification for the field contained in the mapping. This is used to convert the row value to a consistent java value.

Overrides:
getFieldClassification in class DatabaseMapping
Throws:
DescriptorException

getForeignKeyFieldNames

public java.util.Vector getForeignKeyFieldNames()
PUBLIC: Return the foreign key field names associated with the mapping. These are only the source fields that are writable.


getFieldsForTranslationInAggregate

public java.util.Collection getFieldsForTranslationInAggregate()
INTERNAL: Return source key fields for translation by an AggregateObjectMapping

Overrides:
getFieldsForTranslationInAggregate in class ForeignReferenceMapping

getForeignKeysToPrimaryKeys

protected java.util.Map getForeignKeysToPrimaryKeys()
Return the appropriate map that maps the "foreign keys" to the "primary keys".


getForeignKeyFieldsForMapKey

public java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getForeignKeyFieldsForMapKey()
INTERNAL: Return a Map of any foreign keys defined within the the MapKey

Specified by:
getForeignKeyFieldsForMapKey in interface MapKeyMapping
Returns:

getIdentityFieldsForMapKey

public java.util.List<org.eclipse.persistence.internal.helper.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

Specified by:
getIdentityFieldsForMapKey in interface MapKeyMapping
Returns:

getNestedJoinQuery

public ObjectLevelReadQuery getNestedJoinQuery(org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                               ObjectLevelReadQuery query,
                                               org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Return the query that is used when this mapping is part of a joined relationship This method is used when this mapping is used to map the key in a Map

Specified by:
getNestedJoinQuery in interface MapKeyMapping
Returns:

getAllFieldsForMapKey

public java.util.List<org.eclipse.persistence.internal.helper.DatabaseField> getAllFieldsForMapKey()
INTERNAL: Get all the fields for the map key

Specified by:
getAllFieldsForMapKey in interface MapKeyMapping

getOrderedForeignKeyFields

public java.util.Vector getOrderedForeignKeyFields()
INTERNAL: Return a vector of the foreign key fields in the same order as the corresponding primary key fields are in their descriptor.


getPrimaryKeyDescriptor

protected ClassDescriptor getPrimaryKeyDescriptor()
Return the descriptor for whichever side of the relation has the "primary key".


getPrivateOwnedCriteria

public Expression getPrivateOwnedCriteria()
INTERNAL: The private owned criteria is only used outside of the unit of work to compare the previous value of the reference.


getSourceToTargetKeyFieldAssociations

public java.util.Vector getSourceToTargetKeyFieldAssociations()
INTERNAL: Return a collection of the source to target field value associations.


getSourceToTargetKeyFields

public java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getSourceToTargetKeyFields()
INTERNAL: Returns the source keys to target keys fields association.


getTargetToSourceKeyFields

public java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getTargetToSourceKeyFields()
INTERNAL: Returns the target keys to source keys fields association.


getTargetVersionOfSourceObject

public java.lang.Object getTargetVersionOfSourceObject(java.lang.Object object,
                                                       java.lang.Object parent,
                                                       org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                                       org.eclipse.persistence.internal.sessions.AbstractSession targetSession)
INTERNAL: If required, get the targetVersion of the source object from the merge manager Used with MapKeyContainerPolicy to abstract getting the target version of a source key

Specified by:
getTargetVersionOfSourceObject in interface MapKeyMapping
Returns:

getMapKeyTargetType

public java.lang.Class getMapKeyTargetType()
INTERNAL: Return the class this key mapping maps or the descriptor for it

Specified by:
getMapKeyTargetType in interface MapKeyMapping
Returns:

initialize

public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
                throws DescriptorException
INTERNAL: Initialize the mapping.

Overrides:
initialize in class ForeignReferenceMapping
Throws:
DescriptorException

initializeForeignKeys

protected void initializeForeignKeys(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: The foreign keys primary keys are stored as database fields in the map.


initializeForeignKeysWithDefaults

protected void initializeForeignKeysWithDefaults(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: The foreign keys primary keys are stored as database fields in the map.


initializePrivateOwnedCriteria

protected void initializePrivateOwnedCriteria()
INTERNAL: Selection criteria is created with source foreign keys and target keys.


preinitializeMapKey

public void preinitializeMapKey(org.eclipse.persistence.internal.helper.DatabaseTable table)
                         throws DescriptorException
INTERNAL: Making any mapping changes necessary to use a the mapping as a map key prior to initializing the mapping

Specified by:
preinitializeMapKey in interface MapKeyMapping
Throws:
DescriptorException

postInitializeMapKey

public void postInitializeMapKey(org.eclipse.persistence.internal.queries.MappedKeyMapContainerPolicy policy)
INTERNAL: Need to set the field type for the foreign key fields for a map key, as the fields are not contained in any descriptor.

Specified by:
postInitializeMapKey in interface MapKeyMapping

prepareCascadeLockingPolicy

public void prepareCascadeLockingPolicy()
INTERNAL: Prepare a cascade locking policy.

Overrides:
prepareCascadeLockingPolicy in class DatabaseMapping

buildSelectionCriteria

public Expression buildSelectionCriteria()
This method would allow customers to get the potential selection criteria for a mapping prior to initialization. This would allow them to more easily create an amendment method that would amend the SQL for the join.


buildSelectionCriteria

public Expression buildSelectionCriteria(boolean useParameter,
                                         boolean usePreviousSelectionCriteria)
INTERNAL: Build the selection criteria for this mapping. Allows several variations. Either a parameter can be used for the join or simply the database field The existing selection criteria can be built upon or a whole new criteria can be built.


buildShallowOriginalFromRow

public void buildShallowOriginalFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                        java.lang.Object original,
                                        org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                        ObjectBuildingQuery query,
                                        org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
INTERNAL: Builds a shallow original object. Only direct attributes and primary keys are populated. In this way the minimum original required for instantiating a working copy clone can be built without placing it in the shared cache (no concern over cycles).

Overrides:
buildShallowOriginalFromRow in class DatabaseMapping

isOneToOneMapping

public boolean isOneToOneMapping()
INTERNAL:

Overrides:
isOneToOneMapping in class DatabaseMapping

isOwned

public boolean isOwned()
INTERNAL:

Overrides:
isOwned in class DatabaseMapping

readPrivateOwnedForObject

protected java.lang.Object readPrivateOwnedForObject(ObjectLevelModifyQuery modifyQuery)
                                              throws DatabaseException
INTERNAL: Reads the private owned object.

Overrides:
readPrivateOwnedForObject in class ObjectReferenceMapping
Throws:
DatabaseException

rehashFieldDependancies

public void rehashFieldDependancies(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Rehash any map based on fields. This is used to clone descriptors for aggregates, which hammer field names, it is probably better not to hammer the field name and this should be refactored.

Overrides:
rehashFieldDependancies in class DatabaseMapping

requiresDataModificationEventsForMapKey

public boolean requiresDataModificationEventsForMapKey()
INTERNAL: Return whether this mapping requires extra queries to update the rows if it is used as a key in a map. This will typically be true if there are any parts to this mapping that are not read-only.

Specified by:
requiresDataModificationEventsForMapKey in interface MapKeyMapping

isOneToOneRelationship

public boolean isOneToOneRelationship()
Return if this mapping is really for a OneToOne relationship. This is a backward compatibility issue, in that before the ManyToOneMapping was created OneToOneMapping was used for both. false means it may be a OneToOne or a ManyToOne (unknown).


setIsOneToOneRelationship

public void setIsOneToOneRelationship(boolean isOneToOneRelationship)
Define if this mapping is really for a OneToOne relationship. This is a backward compatibility issue, in that before the ManyToOneMapping was created OneToOneMapping was used for both.


setForeignKeyFieldName

public void setForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName)
PUBLIC: Define the foreign key relationship in the 1-1 mapping. This method is used for singleton foreign key relationships only, that is the source object's table has a foreign key field to the target object's primary key field. Only the source foreign key field name is specified. When a foreign key is specified TopLink will automatically populate the value for that field from the target object when the object is written to the database. If the foreign key is also mapped through a direct-to-field then the direct-to-field must be set read-only.


setForeignKeyFieldNames

public void setForeignKeyFieldNames(java.util.Vector fieldNames)
PUBLIC: Return the foreign key field names associated with the mapping. These are only the source fields that are writable.


setPrivateOwnedCriteria

protected void setPrivateOwnedCriteria(Expression expression)
INTERNAL: Private owned criteria is used to verify the deletion of the target. It joins from the source table on the foreign key to the target table, with a parameterization of the primary key of the source object.


setShouldVerifyDelete

public void setShouldVerifyDelete(boolean shouldVerifyDelete)
PUBLIC: Verify delete is used during delete and update on private 1:1's outside of a unit of work only. It checks for the previous value of the target object through joining the source and target tables. By default it is always done, but may be disabled for performance on distributed database reasons. In the unit of work the previous value is obtained from the backup-clone so it is never used.


setSourceToTargetKeyFieldAssociations

public void setSourceToTargetKeyFieldAssociations(java.util.Vector sourceToTargetKeyFieldAssociations)
INTERNAL: Set a collection of the source to target field associations.


setSourceToTargetKeyFields

public void setSourceToTargetKeyFields(java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> sourceToTargetKeyFields)
INTERNAL: Set the source keys to target keys fields association.


setTargetForeignKeyFieldName

public void setTargetForeignKeyFieldName(java.lang.String targetForeignKeyFieldName)
PUBLIC: Define the target foreign key relationship in the 1-1 mapping. This method is used for singleton target foreign key relationships only, that is the target object's table has a foreign key field to the source object's primary key field. The target foreign key field name is specified. The distinction between a foreign key and target foreign key is that the 1-1 mapping will not populate the target foreign key value when written (because it is in the target table). Normally 1-1's are through foreign keys but in bi-directional 1-1's the back reference will be a target foreign key.


setTargetToSourceKeyFields

public void setTargetToSourceKeyFields(java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> targetToSourceKeyFields)
INTERNAL: Set the target keys to source keys fields association.


shouldVerifyDelete

public boolean shouldVerifyDelete()
PUBLIC: Verify delete is used during delete and update outside of a unit of work only. It checks for the previous value of the target object through joining the source and target tables.


isCascadedLockingSupported

public boolean isCascadedLockingSupported()
INTERNAL Return true if this mapping supports cascaded version optimistic locking.

Overrides:
isCascadedLockingSupported in class DatabaseMapping

isJoiningSupported

public boolean isJoiningSupported()
INTERNAL: Return if this mapping support joining.

Overrides:
isJoiningSupported in class ForeignReferenceMapping

iterateOnMapKey

public void iterateOnMapKey(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator,
                            java.lang.Object element)
INTERNAL: Called when iterating through descriptors to handle iteration on this mapping when it is used as a MapKey

Specified by:
iterateOnMapKey in interface MapKeyMapping

unwrapKey

public java.lang.Object unwrapKey(java.lang.Object key,
                                  org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Allow the key mapping to unwrap the object.

Specified by:
unwrapKey in interface MapKeyMapping
Returns:

wrapKey

public java.lang.Object wrapKey(java.lang.Object key,
                                org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Allow the key mapping to wrap the object.

Specified by:
wrapKey in interface MapKeyMapping
Returns:

writeFromAttributeIntoRow

public void writeFromAttributeIntoRow(java.lang.Object attribute,
                                      org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                      org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: A subclass should implement this method if it wants different behavior. Write the foreign key values from the attribute to the row.

Overrides:
writeFromAttributeIntoRow in class DatabaseMapping

valueFromObject

public java.lang.Object valueFromObject(java.lang.Object object,
                                        org.eclipse.persistence.internal.helper.DatabaseField field,
                                        org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Get a value from the object and set that in the respective field of the row.

Overrides:
valueFromObject in class DatabaseMapping

valueFromRowInternalWithJoin

protected java.lang.Object valueFromRowInternalWithJoin(org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                                        org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                                        ObjectBuildingQuery sourceQuery,
                                                        org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                                        org.eclipse.persistence.internal.sessions.AbstractSession executionSession,
                                                        boolean isTargetProtected)
                                                 throws DatabaseException
INTERNAL: Return the value of the field from the row or a value holder on the query to obtain the object. Check for batch + aggregation reading.

Overrides:
valueFromRowInternalWithJoin in class ForeignReferenceMapping
Throws:
DatabaseException

valueFromRowInternal

protected java.lang.Object valueFromRowInternal(org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                                org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                                ObjectBuildingQuery sourceQuery,
                                                org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
                                         throws DatabaseException
INTERNAL: Return the value of the field from the row or a value holder on the query to obtain the object. Check for batch + aggregation reading.

Overrides:
valueFromRowInternal in class ForeignReferenceMapping
Throws:
DatabaseException

writeFromObjectIntoRow

public void writeFromObjectIntoRow(java.lang.Object object,
                                   org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                   org.eclipse.persistence.internal.sessions.AbstractSession session,
                                   DatabaseMapping.WriteType writeType)
INTERNAL: Get a value from the object and set that in the respective field of the row.

Overrides:
writeFromObjectIntoRow in class DatabaseMapping

writeFromObjectIntoRowForShallowInsert

public void writeFromObjectIntoRowForShallowInsert(java.lang.Object object,
                                                   org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: This row is built for shallow insert which happens in case of bidirectional inserts. The foreign keys must be set to null to avoid constraints.

Overrides:
writeFromObjectIntoRowForShallowInsert in class DatabaseMapping

writeFromObjectIntoRowWithChangeRecord

public void writeFromObjectIntoRowWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord,
                                                   org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                   DatabaseMapping.WriteType writeType)
INTERNAL: Get a value from the object and set that in the respective field of the row. Validation preventing primary key updates is implemented here.

Overrides:
writeFromObjectIntoRowWithChangeRecord in class DatabaseMapping

writeFromObjectIntoRowForShallowInsertWithChangeRecord

public void writeFromObjectIntoRowForShallowInsertWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord ChangeRecord,
                                                                   org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                                                   org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: This row is built for shallow insert which happens in case of bidirectional inserts. The foreign keys must be set to null to avoid constraints.

Overrides:
writeFromObjectIntoRowForShallowInsertWithChangeRecord in class DatabaseMapping

writeInsertFieldsIntoRow

public void writeInsertFieldsIntoRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow,
                                     org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Write fields needed for insert into the template for with null values.

Overrides:
writeInsertFieldsIntoRow in class DatabaseMapping

hasRelationTableMechanism

public boolean hasRelationTableMechanism()
PUBLIC: Indicates whether the mapping has RelationTableMechanism.

Overrides:
hasRelationTableMechanism in class ObjectReferenceMapping

hasRelationTable

public boolean hasRelationTable()
PUBLIC: Indicates whether the mapping has RelationTable.


getRelationTableMechanism

public RelationTableMechanism getRelationTableMechanism()
PUBLIC: Returns RelationTableMechanism that may be owned by the mapping, that allows to configure the mapping to use relation table (just like ManyToManyMapping). By default its null, should be created and set into the mapping before use.


setRelationTableMechanism

public void setRelationTableMechanism(RelationTableMechanism mechanism)
PUBLIC: Set RelationTableMechanism into the mapping, that allows to configure the mapping to use relation table (just like ManyToManyMapping).


getRelationTable

public org.eclipse.persistence.internal.helper.DatabaseTable getRelationTable()
PUBLIC: Return RelationTable.


preDelete

public void preDelete(DeleteObjectQuery query)
               throws DatabaseException,
                      OptimisticLockException
INTERNAL: Delete privately owned parts

Overrides:
preDelete in class ObjectReferenceMapping
Throws:
DatabaseException
OptimisticLockException

postInsert

public void postInsert(WriteObjectQuery query)
                throws DatabaseException
INTERNAL: Insert into relation table. This follows following steps.

- Extract primary key and its value from the source object.

- Extract target key and its value from the target object.

- Construct a insert statement with above fields and values for relation table.

- execute the statement.

Overrides:
postInsert in class ObjectReferenceMapping
Throws:
DatabaseException

postUpdate

public void postUpdate(WriteObjectQuery query)
                throws DatabaseException
INTERNAL: Update the relation table with the entries related to this mapping. Delete entries removed, insert entries added. If private also insert/delete/update target objects.

Overrides:
postUpdate in class ObjectReferenceMapping
Throws:
DatabaseException

performDataModificationEvent

public void performDataModificationEvent(java.lang.Object[] event,
                                         org.eclipse.persistence.internal.sessions.AbstractSession session)
                                  throws DatabaseException,
                                         DescriptorException
INTERNAL: Perform the commit event. This is used in the uow to delay data modifications.

Overrides:
performDataModificationEvent in class DatabaseMapping
Throws:
DatabaseException
DescriptorException

collectFields

protected java.util.Vector<org.eclipse.persistence.internal.helper.DatabaseField> collectFields()
INTERNAL: Return all the fields populated by this mapping, these are foreign keys only.

Overrides:
collectFields in class ObjectReferenceMapping

EclipseLink 2.2.0, build 'v20110202-r8913' API Reference