org.eclipse.persistence.mappings
Class UnidirectionalOneToManyMapping
java.lang.Object
org.eclipse.persistence.mappings.DatabaseMapping
org.eclipse.persistence.mappings.ForeignReferenceMapping
org.eclipse.persistence.mappings.CollectionMapping
org.eclipse.persistence.mappings.OneToManyMapping
org.eclipse.persistence.mappings.UnidirectionalOneToManyMapping
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable, ContainerMapping, MapComponentMapping, RelationalMapping
public class UnidirectionalOneToManyMapping
- extends OneToManyMapping
Purpose: UnidirectionalOneToManyMapping doesn't have 1:1 back reference mapping.
- See Also:
- Serialized Form
- Author:
- Andrei Ilitchev
- Since:
- Eclipselink 1.1
Fields inherited from class org.eclipse.persistence.mappings.OneToManyMapping |
addTargetQuery, hasCustomAddTargetQuery, hasCustomRemoveAllTargetsQuery, hasCustomRemoveTargetQuery, ObjectAdded, ObjectRemoved, PostInsert, removeAllTargetsQuery, removeTargetQuery, sourceKeyFields, sourceKeysToTargetForeignKeys, targetForeignKeyFields, targetForeignKeysToSourceKeys, targetForeignKeyTable, targetPrimaryKeyFields |
Fields inherited from class org.eclipse.persistence.mappings.ForeignReferenceMapping |
batchFetchType, cascadeDetach, cascadeMerge, cascadePersist, cascadeRefresh, cascadeRemove, forceInitializationOfSelectionCriteria, hasCustomSelectionQuery, indirectionPolicy, INNER_JOIN, isCascadeOnDeleteSetOnDatabase, isPrivateOwned, joinFetch, mappedBy, 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, unconvertedProperties, weight, WEIGHT_AGGREGATE, WEIGHT_DIRECT, WEIGHT_TO_ONE, WEIGHT_TRANSFORM |
Method Summary |
protected org.eclipse.persistence.internal.sessions.AbstractRecord |
buildKeyRowForTargetUpdate(ObjectLevelModifyQuery query)
INTERNAL:
Build a row containing the keys for use in the query that updates the row for the
target object during an insert or update |
org.eclipse.persistence.internal.sessions.ChangeRecord |
compareForChange(java.lang.Object clone,
java.lang.Object backUp,
org.eclipse.persistence.internal.sessions.ObjectChangeSet owner,
org.eclipse.persistence.internal.sessions.AbstractSession uow)
INTERNAL:
This method is used to create a change record from comparing two collections |
protected org.eclipse.persistence.internal.sessions.AbstractRecord |
createModifyRowForAddTargetQuery()
INTERNAL: |
protected java.util.Vector |
extractSourceKeyFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row,
org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL:
Extract the source primary key value from the target row. |
void |
initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL:
Initialize the mapping. |
boolean |
isOwned()
INTERNAL: |
boolean |
isUnidirectionalOneToManyMapping()
INTERNAL: |
void |
postCalculateChanges(ChangeRecord changeRecord,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
INTERNAL:
Overridden by mappings that require additional processing of the change record after the record has been calculated. |
void |
postCalculateChangesOnDeleted(java.lang.Object deletedObject,
org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet uowChangeSet,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
INTERNAL:
Overridden by mappings that require objects to be deleted contribute to change set creation. |
void |
postInitialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
Initialize the type of the target foreign key, as it will be null as it is not mapped in the target. |
protected void |
postPrepareNestedBatchQuery(ReadQuery batchQuery,
ObjectLevelReadQuery query)
INTERNAL:
Add additional fields |
void |
preDelete(DeleteObjectQuery query)
INTERNAL:
Delete the reference objects. |
void |
prepareCascadeLockingPolicy()
Prepare a cascade locking policy. |
protected void |
prepareTranslationRow(org.eclipse.persistence.internal.sessions.AbstractRecord translationRow,
java.lang.Object object,
ClassDescriptor descriptor,
org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL:
The translation row may require additional fields than the primary key if the mapping in not on the primary key. |
void |
recordPrivateOwnedRemovals(java.lang.Object object,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
INTERNAL:
Overridden by mappings that require additional processing of the change record after the record has been calculated. |
boolean |
requiresDataModificationEvents()
INTERNAL:
UnidirectionalOneToManyMapping performs some events after INSERT/UPDATE to maintain the keys |
void |
setShouldIncrementTargetLockValueOnAddOrRemoveTarget(boolean shouldIncrementTargetLockValueOnAddOrRemoveTarget)
PUBLIC:
Set value that indicates whether target's optimistic locking value should be incremented on
target being added to / removed from a source (default value is true). |
void |
setShouldIncrementTargetLockValueOnDeleteSource(boolean shouldIncrementTargetLockValueOnDeleteSource)
PUBLIC:
Set value that indicates whether target's optimistic locking value should be incremented on
the source deletion (default value is true). |
boolean |
shouldIncrementTargetLockValueOnAddOrRemoveTarget()
PUBLIC:
Indicates whether target's optimistic locking value should be incremented on
target being added to / removed from a source (default value is true). |
boolean |
shouldIncrementTargetLockValueOnDeleteSource()
PUBLIC:
Indicates whether target's optimistic locking value should be incremented on
the source deletion (default value is true). |
protected boolean |
shouldRemoveTargetQueryModifyTargetForeignKey()
INTERNAL
Target foreign key of the removed object should be modified (set to null). |
Methods inherited from class org.eclipse.persistence.mappings.OneToManyMapping |
addTargetForeignKeyField, addTargetForeignKeyFieldName, buildBatchCriteria, buildDefaultSelectionCriteriaAndAddFieldsToQuery, buildListOrderField, buildSelectionCriteria, clone, collectQueryParameters, createMapComponentFromRow, deleteAll, deleteReferenceObjectsLeftOnDatabase, extractBatchKeyFromRow, extractKeyFromTargetRow, getFieldsForTranslationInAggregate, getSourceKeyFieldNames, getSourceKeyFields, getSourceKeysToTargetForeignKeys, getTargetForeignKeyFieldNames, getTargetForeignKeyFields, getTargetForeignKeysToSourceKeys, getTargetForeignKeyToSourceKeys, getTargetPrimaryKeyFields, hasInverseConstraintDependency, initializeAddTargetQuery, initializeChangeOrderTargetQuery, initializeDeleteAllQuery, initializeReferenceDescriptor, initializeRemoveAllTargetsQuery, initializeRemoveTargetQuery, initializeTargetForeignKeysToSourceKeys, initializeTargetPrimaryKeyFields, isCascadedLockingSupported, isJoiningSupported, isOneToManyMapping, isRelationalMapping, isSourceKeySpecified, objectAddedDuringUpdate, objectRemovedDuringUpdate, performDataModificationEvent, postInsert, postUpdate, setAddTargetSQLString, setCustomAddTargetQuery, setCustomRemoveAllTargetsQuery, setCustomRemoveTargetQuery, setDeleteAllSQLString, setSessionName, setSourceKeyFieldNames, setSourceKeyFields, setTargetForeignKeyFieldName, setTargetForeignKeyFieldNames, setTargetForeignKeyFieldNames, setTargetForeignKeyFields, setTargetForeignKeysToSourceKeys, shouldObjectModifyCascadeToParts, updateTargetForeignKeyPostUpdateSource_ObjectAdded, updateTargetForeignKeyPostUpdateSource_ObjectRemoved, updateTargetRowPostInsertSource, updateTargetRowPreDeleteSource, verifyDelete |
Methods inherited from class org.eclipse.persistence.mappings.CollectionMapping |
addAggregateOrderBy, addAscendingOrdering, addDescendingOrdering, addOrderBy, buildBackupCloneForPartObject, buildChangeRecord, buildCloneForPartObject, buildContainerClone, buildCopy, buildElementClone, buildElementUnitOfWorkClone, buildReferencesPKList, calculateDeferredChanges, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemoveIfRequired, cascadePerformRemovePrivateOwnedObjectFromChangeSetIfRequired, cascadeRegisterNewIfRequired, compareCollectionsForChange, compareLists, compareListsAndWrite, compareObjects, compareObjectsAndWrite, compareObjectsWithoutPrivateOwned, compareObjectsWithPrivateOwned, convertClassNamesToClasses, executeBatchQuery, extractResultFromBatchQuery, fixRealObjectReferences, getAdditionalFieldsBaseExpression, getContainerPolicy, getDeleteAllQuery, getJoinCriteria, getListOrderField, getObjectCorrespondingTo, getOrderByQueryKeyExpressions, getOrderCorrectionType, getRealCollectionAttributeValueFromObject, getSelectionQueryContainerPolicy, hasCustomDeleteAllQuery, hasOrderBy, initializeListOrderField, initializeListOrderFieldTable, isAttributeValueInstantiatedOrChanged, isChangeTrackingSupported, isCollectionMapping, isListOrderFieldSupported, isMapKeyObjectRelationship, iterateOnElement, iterateOnRealAttributeValue, mergeChangesIntoObject, mergeIntoObject, mustDeleteReferenceObjectsOneByOne, objectOrderChangedDuringUpdate, objectUnchangedDuringUpdate, objectUnchangedDuringUpdate, postDelete, preInsert, preUpdate, readPrivateOwnedForObject, replaceValueHoldersIn, setChangeListener, setContainerPolicy, setCustomDeleteAllQuery, setDeleteAllCall, setDeleteAllQuery, setHasCustomDeleteAllQuery, setListOrderField, setListOrderFieldName, setMustDeleteReferenceObjectsOneByOne, setOrderCorrectionType, setSelectionQueryContainerPolicy, setUseLazyInstantiationForIndirectCollection, shouldUseLazyInstantiationForIndirectCollection, shouldUseListOrderFieldTableExpression, simpleAddToCollectionChangeRecord, simpleRemoveFromCollectionChangeRecord, updateChangeRecord, updateChangeRecordForSelfMerge, updateCollectionChangeRecord, useCollectionClass, useCollectionClassName, useListClassName, useMapClass, useMapClass, useMapClassName, useSortedSetClass, useSortedSetClassName, useSortedSetClassName, useTransparentCollection, useTransparentList, useTransparentMap, useTransparentSet, validateBeforeInitialization, valueFromPKList, valueFromRowInternalWithJoin, writeChanges |
Methods inherited from class org.eclipse.persistence.mappings.ForeignReferenceMapping |
addForeignKeyField, batchedValueFromRow, buildBackupClone, buildClone, buildCloneFromRow, checkCacheForBatchKey, createCloneValueHolder, dontDoMerge, dontUseBatchReading, dontUseIndirection, extendPessimisticLockScopeInSourceQuery, extendPessimisticLockScopeInTargetQuery, fixObjectReferences, getAttributeValueFromObject, getAttributeValueWithClonedValueHolders, getBatchFetchType, getExtendPessimisticLockScopeDedicatedQuery, getIndirectionPolicy, getJoinFetch, getMappedBy, getOrderByNormalizedExpressions, getPartitioningPolicy, getPartitioningPolicyName, getRealAttributeValueFromAttribute, getReferenceClass, getReferenceClassName, getReferenceDescriptor, getRelationshipPartner, getRelationshipPartnerAttributeName, getSelectionCriteria, getSelectionQuery, getTempSession, getValueFromRemoteValueHolder, hasCustomSelectionQuery, hasDependency, initializeSelectionQuery, instantiateAttribute, isAttributeValueFullyBuilt, isAttributeValueInstantiated, isCascadeDetach, isCascadeMerge, isCascadeOnDeleteSetOnDatabase, isCascadePersist, isCascadeRefresh, isCascadeRemove, isExtendingPessimisticLockScope, isForeignReferenceMapping, isInnerJoinFetched, isJoinFetched, isLazy, isLockableMapping, isOuterJoinFetched, isPrivateOwned, iterate, mergeRemoteValueHolder, preInitialize, prepareHistoricalQuery, prepareNestedBatchQuery, prepareNestedJoinQueryClone, prepareNestedJoins, privateOwnedRelationship, readFromRowIntoObject, remoteInitialization, requiresTransientWeavedFields, setBatchFetchType, setCascadeAll, setCascadeDetach, setCascadeMerge, setCascadePersist, setCascadeRefresh, setCascadeRemove, setCustomSelectionQuery, setForceInitializationOfSelectionCriteria, setHasCustomSelectionQuery, setIndirectionPolicy, setIsCacheable, setIsCascadeOnDeleteSetOnDatabase, setIsPrivateOwned, setJoinFetch, setMappedBy, 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, shouldRefreshCascadeParts, shouldUseBatchReading, shouldUseValueFromRowWithJoin, trimRowForJoin, trimRowForJoin, useBasicIndirection, useBatchReading, useContainerIndirection, useInnerJoinFetch, useOuterJoinFetch, usesIndirection, useWeavedIndirection, valueFromRow, valueFromRowInternal |
Methods inherited from class org.eclipse.persistence.mappings.DatabaseMapping |
addUnconvertedProperty, buildExpression, buildObjectJoinExpression, buildObjectJoinExpression, buildShallowOriginalFromRow, cloneFields, collectFields, derivesId, earlyPreDelete, extractNestedExpressions, getAttributeAccessor, getAttributeClassification, getAttributeName, getDerivedIdMapping, getDescriptor, getField, getFieldClassification, getFields, getGetMethodName, getMapsIdValue, getProperties, getProperty, getRealAttributeValueFromObject, getSelectFields, getSelectTables, getSetMethodName, getUnconvertedProperties, getWeight, hasConstraintDependency, hasMapsIdValue, hasRootExpressionThatShouldUseOuterJoin, hasUnconvertedProperties, isAbstractColumnMapping, isAbstractCompositeCollectionMapping, isAbstractCompositeDirectCollectionMapping, isAbstractCompositeObjectMapping, isAbstractDirectMapping, isAggregateCollectionMapping, isAggregateMapping, isAggregateObjectMapping, isCacheable, isCandidateForPrivateOwnedRemoval, isCloningRequired, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isEISMapping, isElementCollectionMapping, isJPAId, isManyToManyMapping, isManyToOneMapping, isMapKeyMapping, isMultitenantPrimaryKeyMapping, isNestedTableMapping, isObjectReferenceMapping, isOneToOneMapping, isOptional, isPrimaryKeyMapping, isReadOnly, isReferenceMapping, isRemotelyInitialized, isStructureMapping, isTransformationMapping, isUsingMethodAccess, isVariableOneToOneMapping, isWriteOnly, isXMLMapping, readFromResultSetIntoObject, readOnly, readWrite, rehashFieldDependancies, remotelyInitialized, setAttributeAccessor, setAttributeName, setAttributeValueInObject, setDerivedIdMapping, setDerivesId, setDescriptor, setFields, setGetMethodName, setIsJPAId, setIsLazy, setIsMapKeyMapping, setIsOptional, setIsPrimaryKeyMapping, setIsReadOnly, setMapsIdValue, setProperties, setProperty, setSetMethodName, setWeight, toString, validateAfterInitialization, valueFromObject, valueFromResultSet, valueFromRow, writeFromAttributeIntoRow, writeFromObjectIntoRow, writeFromObjectIntoRowForShallowInsert, writeFromObjectIntoRowForShallowInsertWithChangeRecord, writeFromObjectIntoRowForUpdate, writeFromObjectIntoRowForUpdateAfterShallowInsert, writeFromObjectIntoRowForUpdateBeforeShallowDelete, writeFromObjectIntoRowForWhereClause, writeFromObjectIntoRowWithChangeRecord, writeInsertFieldsIntoRow, writeUpdateFieldsIntoRow |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
shouldIncrementTargetLockValueOnAddOrRemoveTarget
protected transient boolean shouldIncrementTargetLockValueOnAddOrRemoveTarget
- Indicates whether target's optimistic locking value should be incremented on
target being added to / removed from a source.
shouldIncrementTargetLockValueOnDeleteSource
protected transient boolean shouldIncrementTargetLockValueOnDeleteSource
- Indicates whether target's optimistic locking value should be incremented on
the source deletion.
Note that if the flag is set to true then the indirection will be triggered on
source delete - in order to verify all targets' versions.
UnidirectionalOneToManyMapping
public UnidirectionalOneToManyMapping()
- PUBLIC:
Default constructor.
buildKeyRowForTargetUpdate
protected org.eclipse.persistence.internal.sessions.AbstractRecord buildKeyRowForTargetUpdate(ObjectLevelModifyQuery query)
- INTERNAL:
Build a row containing the keys for use in the query that updates the row for the
target object during an insert or update
- Overrides:
buildKeyRowForTargetUpdate
in class OneToManyMapping
compareForChange
public org.eclipse.persistence.internal.sessions.ChangeRecord compareForChange(java.lang.Object clone,
java.lang.Object backUp,
org.eclipse.persistence.internal.sessions.ObjectChangeSet owner,
org.eclipse.persistence.internal.sessions.AbstractSession uow)
- INTERNAL:
This method is used to create a change record from comparing two collections
- Overrides:
compareForChange
in class CollectionMapping
- Returns:
- org.eclipse.persistence.internal.sessions.ChangeRecord
extractSourceKeyFromRow
protected java.util.Vector extractSourceKeyFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row,
org.eclipse.persistence.internal.sessions.AbstractSession session)
- INTERNAL:
Extract the source primary key value from the target row.
Used for batch reading, most following same order and fields as in the mapping.
isOwned
public boolean isOwned()
- INTERNAL:
- Overrides:
isOwned
in class DatabaseMapping
isUnidirectionalOneToManyMapping
public boolean isUnidirectionalOneToManyMapping()
- INTERNAL:
- Overrides:
isUnidirectionalOneToManyMapping
in class DatabaseMapping
initialize
public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
throws DescriptorException
- INTERNAL:
Initialize the mapping.
- Overrides:
initialize
in class OneToManyMapping
- Throws:
DescriptorException
postInitialize
public void postInitialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
- Initialize the type of the target foreign key, as it will be null as it is not mapped in the target.
- Overrides:
postInitialize
in class CollectionMapping
createModifyRowForAddTargetQuery
protected org.eclipse.persistence.internal.sessions.AbstractRecord createModifyRowForAddTargetQuery()
- INTERNAL:
- Overrides:
createModifyRowForAddTargetQuery
in class OneToManyMapping
preDelete
public void preDelete(DeleteObjectQuery query)
throws DatabaseException,
OptimisticLockException
- INTERNAL:
Delete the reference objects.
- Overrides:
preDelete
in class OneToManyMapping
- Throws:
DatabaseException
OptimisticLockException
prepareCascadeLockingPolicy
public void prepareCascadeLockingPolicy()
- Prepare a cascade locking policy.
- Overrides:
prepareCascadeLockingPolicy
in class OneToManyMapping
postCalculateChanges
public void postCalculateChanges(ChangeRecord changeRecord,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
- INTERNAL:
Overridden by mappings that require additional processing of the change record after the record has been calculated.
- Overrides:
postCalculateChanges
in class CollectionMapping
postCalculateChangesOnDeleted
public void postCalculateChangesOnDeleted(java.lang.Object deletedObject,
org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet uowChangeSet,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
- INTERNAL:
Overridden by mappings that require objects to be deleted contribute to change set creation.
- Overrides:
postCalculateChangesOnDeleted
in class DatabaseMapping
postPrepareNestedBatchQuery
protected void postPrepareNestedBatchQuery(ReadQuery batchQuery,
ObjectLevelReadQuery query)
- INTERNAL:
Add additional fields
- Overrides:
postPrepareNestedBatchQuery
in class CollectionMapping
prepareTranslationRow
protected void prepareTranslationRow(org.eclipse.persistence.internal.sessions.AbstractRecord translationRow,
java.lang.Object object,
ClassDescriptor descriptor,
org.eclipse.persistence.internal.sessions.AbstractSession session)
- INTERNAL:
The translation row may require additional fields than the primary key if the mapping in not on the primary key.
- Overrides:
prepareTranslationRow
in class CollectionMapping
recordPrivateOwnedRemovals
public void recordPrivateOwnedRemovals(java.lang.Object object,
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)
- INTERNAL:
Overridden by mappings that require additional processing of the change record after the record has been calculated.
- Overrides:
recordPrivateOwnedRemovals
in class CollectionMapping
requiresDataModificationEvents
public boolean requiresDataModificationEvents()
- INTERNAL:
UnidirectionalOneToManyMapping performs some events after INSERT/UPDATE to maintain the keys
- Overrides:
requiresDataModificationEvents
in class OneToManyMapping
- Returns:
- See Also:
UnidirectionalOneToManyMapping
setShouldIncrementTargetLockValueOnAddOrRemoveTarget
public void setShouldIncrementTargetLockValueOnAddOrRemoveTarget(boolean shouldIncrementTargetLockValueOnAddOrRemoveTarget)
- PUBLIC:
Set value that indicates whether target's optimistic locking value should be incremented on
target being added to / removed from a source (default value is true).
setShouldIncrementTargetLockValueOnDeleteSource
public void setShouldIncrementTargetLockValueOnDeleteSource(boolean shouldIncrementTargetLockValueOnDeleteSource)
- PUBLIC:
Set value that indicates whether target's optimistic locking value should be incremented on
the source deletion (default value is true).
shouldIncrementTargetLockValueOnAddOrRemoveTarget
public boolean shouldIncrementTargetLockValueOnAddOrRemoveTarget()
- PUBLIC:
Indicates whether target's optimistic locking value should be incremented on
target being added to / removed from a source (default value is true).
shouldIncrementTargetLockValueOnDeleteSource
public boolean shouldIncrementTargetLockValueOnDeleteSource()
- PUBLIC:
Indicates whether target's optimistic locking value should be incremented on
the source deletion (default value is true).
shouldRemoveTargetQueryModifyTargetForeignKey
protected boolean shouldRemoveTargetQueryModifyTargetForeignKey()
- INTERNAL
Target foreign key of the removed object should be modified (set to null).
- Overrides:
shouldRemoveTargetQueryModifyTargetForeignKey
in class OneToManyMapping