org.eclipse.persistence.eis.mappings
Class EISOneToOneMapping

java.lang.Object
  org.eclipse.persistence.mappings.DatabaseMapping
      org.eclipse.persistence.mappings.ForeignReferenceMapping
          org.eclipse.persistence.mappings.ObjectReferenceMapping
              org.eclipse.persistence.eis.mappings.EISOneToOneMapping

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, EISMapping

public class EISOneToOneMapping
extends ObjectReferenceMapping
implements EISMapping

An EIS one-to-one mapping is a reference mapping that represents the relationship between a single source object and a single mapped persistent Java object. The source object usually contains a foreign key (pointer) to the target object (key on source); alternatively, the target object may contain a foreign key to the source object (key on target). Because both the source and target objects use interactions, they must both be configured as root object types.

Record Type	Description
Indexed	Ordered collection of record elements. The indexed record EIS format enables Java class attribute values to be retrieved by position or index.
Mapped	Key-value map based representation of record elements. The mapped record EIS format enables Java class attribute values to be retrieved by an object key.
XML	Record/Map representation of an XML DOM element.

See Also:

EISDescriptor.useIndexedRecordFormat(), EISDescriptor.useMappedRecordFormat(), EISDescriptor.useXMLRecordFormat(), Serialized Form

Since:

Oracle TopLink 10g Release 2 (10.1.3)

Nested Class Summary

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

DatabaseMapping.WriteType

Field Summary

protected Expression	privateOwnedCriteria
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	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

EISOneToOneMapping()

Method Summary

void	addForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField sourceForeignKeyField, org.eclipse.persistence.internal.helper.DatabaseField targetKeyField) PUBLIC: Define the source foreign key relationship in the one-to-one mapping.
void	addForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName, java.lang.String targetKeyFieldName) PUBLIC: Define the source foreign key relationship in the one-to-one mapping.
java.lang.Object	clone() INTERNAL: This methods clones all the fields and ensures that each collection refers to the same clones.
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).
java.lang.Class	getFieldClassification(org.eclipse.persistence.internal.helper.DatabaseField fieldToClassify) INTERNAL: Return the classifiction for the field contained in the mapping.
Expression	getPrivateOwnedCriteria() INTERNAL: The private owned criteria is only used outside of the unit of work to compare the previous value of the reference.
java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField>	getSourceToTargetKeyFields() INTERNAL: Gets the foreign key fields.
java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField>	getTargetToSourceKeyFields() INTERNAL: Gets the target foreign key fields.
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 hashtable.
protected void	initializePrivateOwnedCriteria() INTERNAL: Selection criteria is created with source foreign keys and target keys.
protected void	initializeSelectionCriteria(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Selection criteria is created with source foreign keys and target keys.
boolean	isEISMapping() INTERNAL:
boolean	isOneToOneMapping() INTERNAL:
protected java.lang.Object	readPrivateOwnedForObject(ObjectLevelModifyQuery modifyQuery) INTERNAL: Reads the private owned object.
protected void	setPrivateOwnedCriteria(Expression expression) INTERNAL: Private owned criteria is used to verify the deletion of the target.
void	setSelectionSQLString(java.lang.String sqlString) INTERNAL: This method is not supported in an EIS environment.
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	setSourceToTargetKeyFields(java.util.Map sourceToTargetKeyFields) INTERNAL: Set the source keys to target keys fields association.
void	setTargetToSourceKeyFields(java.util.Map targetToSourceKeyFields) INTERNAL: Set the source keys to target keys fields association.
void	setUsesBatchReading(boolean usesBatchReading) INTERNAL: This method is not supported in an EIS environment.
boolean	shouldVerifyDelete() PUBLIC: Verify delete is used during delete and update outside of a unit of work only.
void	useBatchReading() INTERNAL: This method is not supported in an EIS environment.
java.lang.Object	valueFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, org.eclipse.persistence.internal.sessions.AbstractSession session, boolean isTargetProtected) INTERNAL: Return the value of the field from the row or a value holder on the query to obtain the object.
void	writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord Record, 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.

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

buildBackupCloneForPartObject, buildChangeRecord, buildCloneForPartObject, buildCopy, buildExpression, buildReferencesPKList, buildTargetInterfaces, buildUnitofWorkCloneForPartObject, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemoveIfRequired, cascadePerformRemoveIfRequired, cascadePerformRemovePrivateOwnedObjectFromChangeSetIfRequired, cascadeRegisterNewIfRequired, cascadeRegisterNewIfRequired, collectFields, collectQueryParameters, compareForChange, compareObjectsWithoutPrivateOwned, compareObjectsWithPrivateOwned, createCloneValueHolder, extractPrimaryKeyRowForSourceObject, extractPrimaryKeysForReferenceObject, extractPrimaryKeysFromRealReferenceObject, fixRealObjectReferences, getDescriptorForTarget, getForeignKeyFields, getPrimaryKeyForObject, getRealAttributeValueFromAttribute, hasConstraintDependency, hasRelationTableMechanism, insert, internalBuildChangeRecord, isChangeTrackingSupported, isForeignKeyRelationship, isObjectReferenceMapping, iterateOnRealAttributeValue, mergeChangesIntoObject, mergeIntoObject, postCalculateChanges, postDelete, postInsert, postUpdate, preDelete, 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, buildBatchCriteria, buildClone, buildCloneFromRow, checkCacheForBatchKey, compareObjects, convertClassNamesToClasses, dontDoMerge, dontUseBatchReading, dontUseIndirection, executeBatchQuery, extendPessimisticLockScopeInSourceQuery, extendPessimisticLockScopeInTargetQuery, extractBatchKeyFromRow, extractResultFromBatchQuery, fixObjectReferences, getAttributeValueFromObject, getAttributeValueWithClonedValueHolders, getBatchFetchType, getExtendPessimisticLockScopeDedicatedQuery, getFieldsForTranslationInAggregate, 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, isJoiningSupported, isLazy, isLockableMapping, isOuterJoinFetched, isPrivateOwned, iterate, mergeRemoteValueHolder, postInitialize, postPrepareNestedBatchQuery, 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, setShouldExtendPessimisticLockScope, setTempSession, setUsesIndirection, shouldExtendPessimisticLockScope, shouldExtendPessimisticLockScopeInDedicatedQuery, shouldExtendPessimisticLockScopeInSourceQuery, shouldExtendPessimisticLockScopeInTargetQuery, shouldForceInitializationOfSelectionCriteria, shouldInitializeSelectionCriteria, shouldMergeCascadeParts, shouldMergeCascadeReference, shouldObjectModifyCascadeToParts, shouldUseBatchReading, shouldUseValueFromRowWithJoin, trimRowForJoin, trimRowForJoin, useBasicIndirection, useContainerIndirection, useInnerJoinFetch, useOuterJoinFetch, usesIndirection, useWeavedIndirection, validateBeforeInitialization, valueFromRowInternal, valueFromRowInternalWithJoin

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

buildContainerClone, buildObjectJoinExpression, buildObjectJoinExpression, buildShallowOriginalFromRow, 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, isCascadedLockingSupported, isCloningRequired, isCollectionMapping, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isJPAId, isManyToManyMapping, isManyToOneMapping, isMapKeyMapping, isNestedTableMapping, isOneToManyMapping, isOptional, isOwned, isPrimaryKeyMapping, isReadOnly, isReferenceMapping, isRelationalMapping, isRemotelyInitialized, isStructureMapping, isTransformationMapping, isUnidirectionalOneToManyMapping, isUsingMethodAccess, isVariableOneToOneMapping, isWriteOnly, isXMLMapping, performDataModificationEvent, postCalculateChangesOnDeleted, prepareCascadeLockingPolicy, readFromResultSetIntoObject, readOnly, readWrite, rehashFieldDependancies, 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, valueFromObject, valueFromResultSet, valueFromRow, writeFromAttributeIntoRow, writeFromObjectIntoRowForShallowInsert, writeFromObjectIntoRowForShallowInsertWithChangeRecord, writeFromObjectIntoRowWithChangeRecord, writeInsertFieldsIntoRow, writeUpdateFieldsIntoRow

Methods inherited from class java.lang.Object

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

Field Detail

sourceToTargetKeyFields

protected java.util.Map 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

Constructor Detail

EISOneToOneMapping

public EISOneToOneMapping()

Method Detail

isEISMapping

public boolean isEISMapping()

INTERNAL:

Overrides:

isEISMapping in class DatabaseMapping

isOneToOneMapping

public boolean isOneToOneMapping()

INTERNAL:

Overrides:

isOneToOneMapping in class DatabaseMapping

addForeignKeyField

public void addForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField sourceForeignKeyField,
                               org.eclipse.persistence.internal.helper.DatabaseField targetKeyField)

PUBLIC: Define the source foreign key relationship in the one-to-one mapping. This method is used to add foreign key relationships to the mapping. Both the source foreign key field name and the corresponding target primary key field name must be specified.

addForeignKeyFieldName

public void addForeignKeyFieldName(java.lang.String sourceForeignKeyFieldName,
                                   java.lang.String targetKeyFieldName)

PUBLIC: Define the source foreign key relationship in the one-to-one mapping. This method is used to add foreign key relationships to the mapping. Both the source foreign key field name and the corresponding target primary key field name must be specified.

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

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

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 hashtable.

initializeSelectionCriteria

protected void initializeSelectionCriteria(org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Selection criteria is created with source foreign keys and target keys. This criteria is then used to read target records from the table. CR#3922 - This method is almost the same as buildSelectionCriteria() the difference is that getSelectionCriteria() is called

readPrivateOwnedForObject

protected java.lang.Object readPrivateOwnedForObject(ObjectLevelModifyQuery modifyQuery)
                                              throws DatabaseException

INTERNAL: Reads the private owned object.

Overrides:

readPrivateOwnedForObject in class ObjectReferenceMapping

Throws:

DatabaseException

initializePrivateOwnedCriteria

protected void initializePrivateOwnedCriteria()

INTERNAL: Selection criteria is created with source foreign keys and target keys.

valueFromRow

public java.lang.Object valueFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                     org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                     ObjectBuildingQuery query,
                                     org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey,
                                     org.eclipse.persistence.internal.sessions.AbstractSession session,
                                     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:

valueFromRow in class ForeignReferenceMapping

Throws:

DatabaseException

writeFromObjectIntoRow

public void writeFromObjectIntoRow(java.lang.Object object,
                                   org.eclipse.persistence.internal.sessions.AbstractRecord Record,
                                   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

getFieldClassification

public java.lang.Class getFieldClassification(org.eclipse.persistence.internal.helper.DatabaseField fieldToClassify)
                                       throws DescriptorException

INTERNAL: Return the classifiction 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

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.

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.

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.

getSourceToTargetKeyFields

public java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getSourceToTargetKeyFields()

INTERNAL: Gets the foreign key fields.

getTargetToSourceKeyFields

public java.util.Map<org.eclipse.persistence.internal.helper.DatabaseField,org.eclipse.persistence.internal.helper.DatabaseField> getTargetToSourceKeyFields()

INTERNAL: Gets the target foreign key fields.

setSourceToTargetKeyFields

public void setSourceToTargetKeyFields(java.util.Map sourceToTargetKeyFields)

INTERNAL: Set the source keys to target keys fields association.

setTargetToSourceKeyFields

public void setTargetToSourceKeyFields(java.util.Map targetToSourceKeyFields)

INTERNAL: Set the source keys to target keys fields association.

setSelectionSQLString

public void setSelectionSQLString(java.lang.String sqlString)

INTERNAL: This method is not supported in an EIS environment.

Overrides:

setSelectionSQLString in class ForeignReferenceMapping

setUsesBatchReading

public void setUsesBatchReading(boolean usesBatchReading)

INTERNAL: This method is not supported in an EIS environment.

Overrides:

setUsesBatchReading in class ForeignReferenceMapping

See Also:

ForeignReferenceMapping.setBatchFetchType(BatchFetchType)

useBatchReading

public void useBatchReading()

INTERNAL: This method is not supported in an EIS environment.

Overrides:

useBatchReading in class ForeignReferenceMapping