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

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.persistence.mappings.DatabaseMapping

DatabaseMapping.WriteType

Field Summary

protected boolean	shouldIncrementTargetLockValueOnAddOrRemoveTarget Indicates whether target's optimistic locking value should be incremented on target being added to / removed from a source.
protected boolean	shouldIncrementTargetLockValueOnDeleteSource Indicates whether target's optimistic locking value should be incremented on the source deletion.

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.CollectionMapping

changeOrderTargetQuery, containerPolicy, deleteAllQuery, hasCustomDeleteAllQuery, hasOrderBy, isListOrderFieldSupported, listOrderField, mustDeleteReferenceObjectsOneByOne, orderCorrectionType

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

UnidirectionalOneToManyMapping()
PUBLIC: Default constructor.

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, 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

batchedValueFromRow, buildBackupClone, buildClone, buildCloneFromRow, checkCacheForBatchKey, createCloneValueHolder, dontDoMerge, dontUseBatchReading, dontUseIndirection, extendPessimisticLockScopeInSourceQuery, extendPessimisticLockScopeInTargetQuery, fixObjectReferences, getAttributeValueFromObject, getAttributeValueWithClonedValueHolders, getBatchFetchType, getExtendPessimisticLockScopeDedicatedQuery, getIndirectionPolicy, getJoinFetch, 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, 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, shouldUseBatchReading, shouldUseValueFromRowWithJoin, trimRowForJoin, trimRowForJoin, useBasicIndirection, useBatchReading, useContainerIndirection, useInnerJoinFetch, useOuterJoinFetch, usesIndirection, useWeavedIndirection, valueFromRow, valueFromRowInternal

Methods inherited from class org.eclipse.persistence.mappings.DatabaseMapping

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, getWeight, hasConstraintDependency, hasMapsIdValue, hasRootExpressionThatShouldUseOuterJoin, isAbstractCompositeCollectionMapping, isAbstractCompositeDirectCollectionMapping, isAbstractCompositeObjectMapping, isAbstractDirectMapping, isAggregateCollectionMapping, isAggregateMapping, isAggregateObjectMapping, isCacheable, isCandidateForPrivateOwnedRemoval, isCloningRequired, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isEISMapping, isElementCollectionMapping, isJPAId, isManyToManyMapping, isManyToOneMapping, isMapKeyMapping, 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, writeFromObjectIntoRowForWhereClause, writeFromObjectIntoRowWithChangeRecord, writeInsertFieldsIntoRow, writeUpdateFieldsIntoRow

Methods inherited from class java.lang.Object

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

Field Detail

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.

Constructor Detail

UnidirectionalOneToManyMapping

public UnidirectionalOneToManyMapping()

PUBLIC: Default constructor.

Method Detail

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