Package org.eclipse.persistence.mappings

Class ForeignReferenceMapping

java.lang.Object
org.eclipse.persistence.core.mappings.CoreMapping<AttributeAccessor,org.eclipse.persistence.internal.sessions.AbstractSession,org.eclipse.persistence.internal.queries.ContainerPolicy,ClassDescriptor,org.eclipse.persistence.internal.helper.DatabaseField>
org.eclipse.persistence.mappings.DatabaseMapping
org.eclipse.persistence.mappings.ForeignReferenceMapping
All Implemented Interfaces:
Serializable, Cloneable
Direct Known Subclasses:
CollectionMapping, ObjectReferenceMapping
public abstract class ForeignReferenceMapping extends DatabaseMapping
Purpose: Abstract class for relationship mappings
See Also:

  • Field Details

    • QUERY_BATCH_PARAMETER

      public static final String QUERY_BATCH_PARAMETER
      Query parameter name used for IN batch ids.
      See Also:

    • referenceClass

      protected Class referenceClass
      This is used only in descriptor proxy in remote session

    • referenceClassName

      protected String referenceClassName

    • tempInitSession

      protected transient org.eclipse.persistence.internal.sessions.AbstractSession tempInitSession
      The session is temporarily used for initialization. Once used, it is set to null

    • referenceDescriptor

      protected transient ClassDescriptor referenceDescriptor
      The descriptor of the reference class.

    • selectionQuery

      protected ReadQuery selectionQuery
      This query is used to read referenced objects for this mapping.

    • isPrivateOwned

      protected boolean isPrivateOwned
      Indicates whether the referenced object is privately owned or not.

    • batchFetchType

      protected BatchFetchType batchFetchType
      Indicates whether the referenced object should always be batch read on read all queries, and defines the type of batch fetch to use.

    • indirectionPolicy

      protected org.eclipse.persistence.internal.indirection.IndirectionPolicy indirectionPolicy
      Implements indirection behavior

    • hasCustomSelectionQuery

      protected transient boolean hasCustomSelectionQuery
      Indicates whether the selection query is TopLink generated or defined by the user.

    • relationshipPartner

      protected DatabaseMapping relationshipPartner
      Used to reference the other half of a bi-directional relationship.

    • relationshipPartnerAttributeName

      protected String relationshipPartnerAttributeName
      Set by users, used to retrieve the backpointer for this mapping

    • cascadePersist

      protected boolean cascadePersist
      Cascading flags used by the EntityManager

    • cascadeMerge

      protected boolean cascadeMerge

    • cascadeRefresh

      protected boolean cascadeRefresh

    • cascadeRemove

      protected boolean cascadeRemove

    • cascadeDetach

      protected boolean cascadeDetach

    • requiresTransientWeavedFields

      protected boolean requiresTransientWeavedFields
      Flag used to determine if we need to weave the transient annotation on weaved fields.

    • joinFetch

      protected int joinFetch
      Define if the relationship should always be join fetched.

    • INNER_JOIN

      public static final int INNER_JOIN
      Specify any INNER join on a join fetch.
      See Also:

    • OUTER_JOIN

      public static final int OUTER_JOIN
      Specify any OUTER join on a join fetch.
      See Also:

    • NONE

      public static final int NONE
      Specify no join fetch, this is the default.
      See Also:

    • forceInitializationOfSelectionCriteria

      protected boolean forceInitializationOfSelectionCriteria
      This is a way (after cloning) to force the initialization of the selection criteria

    • isCascadeOnDeleteSetOnDatabase

      protected boolean isCascadeOnDeleteSetOnDatabase
      Support delete cascading on the database relationship constraint.

    • partitioningPolicy

      protected PartitioningPolicy partitioningPolicy
      Allow the mapping's queries to be targeted at specific connection pools.

    • partitioningPolicyName

      protected String partitioningPolicyName
      Allow the mapping's queries to be targeted at specific connection pools.

    • mappedBy

      protected String mappedBy
      Stores JPA metadata about whether another mapping is the owning mapping. Only populated for JPA models

  • Constructor Details

    • ForeignReferenceMapping

      protected ForeignReferenceMapping()

  • Method Details

    • getMappedBy

      public String getMappedBy()
      ADVANCED: Allows the retrieval of the owning mapping for a particular mapping. Note: This will only be set for JPA models
      Returns:

    • getPartitioningPolicy

      public PartitioningPolicy getPartitioningPolicy()
      PUBLIC: Return the mapping's partitioning policy.

    • setPartitioningPolicy

      public void setPartitioningPolicy(PartitioningPolicy partitioningPolicy)
      PUBLIC: Set the mapping's partitioning policy. A PartitioningPolicy is used to partition, load-balance or replicate data across multiple difference databases or across a database cluster such as Oracle RAC. Partitioning can provide improved scalability by allowing multiple database machines to service requests. Setting a policy on a mapping will set the policy on all of its mappings.

    • getPartitioningPolicyName

      public String getPartitioningPolicyName()
      PUBLIC: Return the name of the mapping's partitioning policy. A PartitioningPolicy with the same name must be defined on the Project. A PartitioningPolicy is used to partition the data for a class across multiple difference databases or across a database cluster such as Oracle RAC. Partitioning can provide improved scalability by allowing multiple database machines to service requests.

    • setPartitioningPolicyName

      public void setPartitioningPolicyName(String partitioningPolicyName)
      PUBLIC: Set the name of the mapping's partitioning policy. A PartitioningPolicy with the same name must be defined on the Project. A PartitioningPolicy is used to partition the data for a class across multiple difference databases or across a database cluster such as Oracle RAC. Partitioning can provide improved scalability by allowing multiple database machines to service requests.

    • batchedValueFromRow

      protected Object batchedValueFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, ObjectLevelReadQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey)
      INTERNAL: Retrieve the value through using batch reading. This executes a single query to read the target for all of the objects and stores the result of the batch query in the original query to allow the other objects to share the results.

    • buildBackupClone

      public void buildBackupClone(Object clone, Object backup, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
      INTERNAL: Clone the attribute from the clone and assign it to the backup.
      Specified by:
      buildBackupClone in class DatabaseMapping

    • buildBackupCloneForPartObject

      public abstract Object buildBackupCloneForPartObject(Object attributeValue, Object clone, Object backup, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
      INTERNAL: Used during building the backup shallow copy to copy the target object without re-registering it.
      Overrides:
      buildBackupCloneForPartObject in class DatabaseMapping

    • buildClone

      public void buildClone(Object original, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, Object clone, Integer refreshCascade, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession)
      INTERNAL: Clone the attribute from the original and assign it to the clone.
      Specified by:
      buildClone in class DatabaseMapping

    • buildCloneFromRow

      public void buildCloneFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, Object clone, org.eclipse.persistence.internal.identitymaps.CacheKey sharedCacheKey, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
      INTERNAL: A combination of readFromRowIntoObject and buildClone.

      buildClone assumes the attribute value exists on the original and can simply be copied.

      readFromRowIntoObject assumes that one is building an original.

      Both of the above assumptions are false in this method, and actually attempts to do both at the same time.

      Extract value from the row and set the attribute to this value in the working copy clone. In order to bypass the shared cache when in transaction a UnitOfWork must be able to populate working copies directly from the row.

      Specified by:
      buildCloneFromRow in class DatabaseMapping

    • buildCloneForPartObject

      public abstract Object buildCloneForPartObject(Object attributeValue, Object original, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, Object clone, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession, Integer refreshCascade, boolean isExisting, boolean isFromSharedCache)
      INTERNAL: Require for cloning, the part must be cloned.
      Overrides:
      buildCloneForPartObject in class DatabaseMapping

    • clone

      public Object clone()
      INTERNAL: The mapping clones itself to create deep copy.
      Overrides:
      clone in class DatabaseMapping

    • buildReferencesPKList

      public abstract Object[] buildReferencesPKList(Object entity, Object attribute, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: This method will access the target relationship and create a list of information to rebuild the relationship. This method is used in combination with the CachedValueHolder to store references to PK's to be loaded from a cache instead of a query.

    • compareObjects

      public boolean compareObjects(Object firstObject, Object secondObject, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: Compare the attributes belonging to this mapping for the objects.
      Specified by:
      compareObjects in class DatabaseMapping

    • compareObjectsWithoutPrivateOwned

      protected abstract boolean compareObjectsWithoutPrivateOwned(Object first, Object second, org.eclipse.persistence.internal.sessions.AbstractSession session)
      Compare two objects if their parts are not private owned

    • compareObjectsWithPrivateOwned

      protected abstract boolean compareObjectsWithPrivateOwned(Object first, Object second, org.eclipse.persistence.internal.sessions.AbstractSession session)
      Compare two objects if their parts are private owned

    • convertClassNamesToClasses

      public void convertClassNamesToClasses(ClassLoader classLoader)
      INTERNAL: Convert all the class-name-based settings in this mapping to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes.
      Overrides:
      convertClassNamesToClasses in class DatabaseMapping

    • createCloneValueHolder

      public org.eclipse.persistence.internal.indirection.DatabaseValueHolder createCloneValueHolder(ValueHolderInterface attributeValue, Object original, Object clone, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession, boolean buildDirectlyFromRow)
      INTERNAL: Builder the unit of work value holder. Ignore the original object.
      Overrides:
      createCloneValueHolder in class DatabaseMapping
      Parameters:
      buildDirectlyFromRow - indicates that we are building the clone directly from a row as opposed to building the original from the row, putting it in the shared cache, and then cloning the original.

    • dontDoMerge

      protected boolean dontDoMerge(Object target, Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
      INTERNAL: Return true if the merge should be bypassed. This would be the case for several reasons, depending on the kind of merge taking place.

    • dontUseBatchReading

      public void dontUseBatchReading()
      PUBLIC: Indicates whether the referenced object should always be batch read on read all queries. Batch reading will read all of the related objects in a single query when accessed from an originating read all. This should only be used if it is know that the related objects are always required with the source object, or indirection is not used.

    • dontUseIndirection

      public void dontUseIndirection()
      PUBLIC: Indirection means that a ValueHolder will be put in-between the attribute and the real object. This allows for the reading of the target from the database to be delayed until accessed. This defaults to true and is strongly suggested as it give a huge performance gain.

    • extendPessimisticLockScopeInTargetQuery

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

    • extendPessimisticLockScopeInSourceQuery

      public void extendPessimisticLockScopeInSourceQuery(ObjectLevelReadQuery sourceQuery)
      INTERNAL: Called if shouldExtendPessimisticLockScopeInSourceQuery is 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.

    • extractResultFromBatchQuery

      public Object extractResultFromBatchQuery(ReadQuery batchQuery, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractRecord sourceRow, org.eclipse.persistence.internal.sessions.AbstractSession session, ObjectLevelReadQuery originalQuery) throws QueryException
      INTERNAL: Extract the value from the batch optimized query, this should be supported by most query types.
      Throws:
      QueryException

    • extractBatchKeyFromRow

      protected Object extractBatchKeyFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord targetRow, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: Extract the batch key value from the source row. Used for batch reading, most following same order and fields as in the mapping. The method should be overridden by classes that support batch reading.

    • collectQueryParameters

      public abstract void collectQueryParameters(Set<org.eclipse.persistence.internal.helper.DatabaseField> cacheFields)
      INTERNAL: This method is used to store the FK fields that can be cached that correspond to noncacheable mappings the FK field values will be used to re-issue the query when cloning the shared cache entity
      Overrides:
      collectQueryParameters in class DatabaseMapping

    • checkCacheForBatchKey

      protected Object checkCacheForBatchKey(org.eclipse.persistence.internal.sessions.AbstractRecord sourceRow, Object foreignKey, 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 source row. If in the cache, add the object to the batch results. Return null if not possible or not in the cache.

    • executeBatchQuery

      protected void executeBatchQuery(DatabaseQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, Map referenceObjectsByKey, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord row)
      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.

    • prepareNestedJoins

      public ObjectLevelReadQuery prepareNestedJoins(org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery baseQuery, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: Clone and prepare the JoinedAttributeManager nested JoinedAttributeManager. This is used for nested joining as the JoinedAttributeManager passed to the joined build object.

    • postPrepareNestedBatchQuery

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

    • buildBatchCriteria

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

    • prepareNestedBatchQuery

      public ReadQuery prepareNestedBatchQuery(ObjectLevelReadQuery query)
      INTERNAL: Clone and prepare the selection query as a nested batch read query. This is used for nested batch reading.

    • fixObjectReferences

      public void fixObjectReferences(Object object, Map objectDescriptors, Map processedObjects, ObjectLevelReadQuery query, DistributedSession session)
      INTERNAL: An object has been serialized from the server to the client. Replace the transient attributes of the remote value holders with client-side objects.
      Specified by:
      fixObjectReferences in class DatabaseMapping

    • getAttributeValueFromObject

      public Object getAttributeValueFromObject(Object object) throws DescriptorException
      INTERNAL: Return the value of an attribute which this mapping represents for an object.
      Overrides:
      getAttributeValueFromObject in class DatabaseMapping
      Throws:
      DescriptorException

    • getAttributeValueWithClonedValueHolders

      public Object getAttributeValueWithClonedValueHolders(Object object)
      INTERNAL: Returns the attribute value from the reference object. If the attribute is using indirection the value of the value-holder is returned. If the value holder is not instantiated then it is instantiated.

    • getFieldsForTranslationInAggregate

      public Collection getFieldsForTranslationInAggregate()
      INTERNAL: Return source key fields for translation by an AggregateObjectMapping By default, return an empty NonSynchronizedVector

    • 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.

    • getIndirectionPolicy

      public org.eclipse.persistence.internal.indirection.IndirectionPolicy getIndirectionPolicy()
      INTERNAL: Return the mapping's indirection policy.

    • isAttributeValueFromObjectInstantiated

      public boolean isAttributeValueFromObjectInstantiated(Object object)
      INTERNAL: Return whether the specified object is instantiated.
      Overrides:
      isAttributeValueFromObjectInstantiated in class DatabaseMapping

    • getJoinCriteria

      public Expression getJoinCriteria(org.eclipse.persistence.internal.expressions.ObjectExpression context, Expression base)
      INTERNAL: Returns the join criteria stored in the mapping selection query. This criteria is used to read reference objects across the tables from the database.

    • getObjectCorrespondingTo

      public Object getObjectCorrespondingTo(Object object, DistributedSession session, Map objectDescriptors, Map processedObjects, ObjectLevelReadQuery query)
      INTERNAL: return the object on the client corresponding to the specified object. ForeignReferenceMappings have to worry about maintaining object identity.
      Overrides:
      getObjectCorrespondingTo in class DatabaseMapping

    • getRealAttributeValueFromAttribute

      public Object getRealAttributeValueFromAttribute(Object attributeValue, Object object, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: Returns the attribute value from the reference object. If the attribute is using indirection the value of the value-holder is returned. If the value holder is not instantiated then it is instantiated.
      Overrides:
      getRealAttributeValueFromAttribute in class DatabaseMapping

    • isLazy

      public boolean isLazy()
      Return if this mapping is lazy. For relationship mappings this should normally be the same value as indirection, however for eager relationships this can be used with indirection to allow indirection locking and change tracking, but still always force instantiation.
      Overrides:
      isLazy in class DatabaseMapping

    • isLockableMapping

      public boolean isLockableMapping()
      INTERNAL: Return whether this mapping should be traversed when we are locking.
      Overrides:
      isLockableMapping in class DatabaseMapping
      Returns:

    • instantiateAttribute

      public void instantiateAttribute(Object object, org.eclipse.persistence.internal.sessions.AbstractSession session)
      INTERNAL: Trigger the instantiation of the attribute if lazy.
      Overrides:
      instantiateAttribute in class DatabaseMapping

    • getReferenceClass

      public Class getReferenceClass()
      PUBLIC: Returns the reference class.

    • getReferenceClassName

      public String getReferenceClassName()
      INTERNAL: Returns the reference class name.

    • getReferenceDescriptor

      public ClassDescriptor getReferenceDescriptor()
      INTERNAL: Return the referenceDescriptor. This is a descriptor which is associated with the reference class.
      Overrides:
      getReferenceDescriptor in class DatabaseMapping

    • getRelationshipPartner

      public DatabaseMapping getRelationshipPartner()
      INTERNAL: Return the relationshipPartner mapping for this bi-directional mapping. If the relationshipPartner is null then this is a uni-directional mapping.
      Overrides:
      getRelationshipPartner in class DatabaseMapping

    • getRelationshipPartnerAttributeName

      public String getRelationshipPartnerAttributeName()
      PUBLIC: Use this method retrieve the relationship partner attribute name of this bidirectional Mapping.

    • getSelectionCriteria

      public Expression getSelectionCriteria()
      INTERNAL: Returns the selection criteria stored in the mapping selection query. This criteria is used to read reference objects from the database. It will return null before initialization. To obtain the selection criteria before initialization (e.g., in a customizer) you can use the buildSelectionCriteria() method defined by some subclasses.
      See Also:

    • getSelectionQuery

      public ReadQuery getSelectionQuery()
      INTERNAL: Returns the read query associated with the mapping.

    • getTempSession

      protected org.eclipse.persistence.internal.sessions.AbstractSession getTempSession()

    • getValueFromRemoteValueHolder

      public Object getValueFromRemoteValueHolder(org.eclipse.persistence.internal.sessions.remote.RemoteValueHolder remoteValueHolder)
      INTERNAL: Extract and return the appropriate value from the specified remote value holder.
      Overrides:
      getValueFromRemoteValueHolder in class DatabaseMapping

    • hasCustomSelectionQuery

      public boolean hasCustomSelectionQuery()
      INTERNAL: Indicates whether the selection query is TopLink generated or defined by the user.

    • hasNestedIdentityReference

      public boolean hasNestedIdentityReference()
      INTERNAL: Indicates whether the mapping (or at least one of its nested mappings, at any nested depth) references an entity. To return true the mapping (or nested mapping) should be ForeignReferenceMapping with non-null and non-aggregate reference descriptor.
      Overrides:
      hasNestedIdentityReference in class DatabaseMapping

    • preInitialize

      public void preInitialize(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
      INTERNAL: Initialize the state of mapping.
      Overrides:
      preInitialize in class DatabaseMapping
      Throws:
      DescriptorException

    • initialize

      public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
      INTERNAL: Initialize the state of mapping.
      Overrides:
      initialize in class DatabaseMapping
      Throws:
      DescriptorException

    • initializeReferenceDescriptor

      protected void initializeReferenceDescriptor(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
      Initialize and set the descriptor for the referenced class in this mapping.
      Throws:
      DescriptorException

    • isAttributeValueFullyBuilt

      public boolean isAttributeValueFullyBuilt(Object object)
      INTERNAL: The method validateAttributeOfInstantiatedObject(Object attributeValue) fixes the value of the attributeValue in cases where it is null and indirection requires that it contain some specific data structure. Return whether this will happen. This method is used to help determine if indirection has been triggered
      Parameters:
      object -
      Returns:
      See Also:
      • IndirectionPolicy.validateAttributeOfInstantiatedObject(Object)

    • initializeSelectionQuery

      protected void initializeSelectionQuery(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
      A subclass should implement this method if it wants non default behavior.
      Throws:
      DescriptorException

    • isAttributeValueInstantiated

      public boolean isAttributeValueInstantiated(Object object)
      INTERNAL: The referenced object is checked if it is instantiated or not

    • isCascadeDetach

      public boolean isCascadeDetach()
      PUBLIC: Check cascading value for the detach operation.

    • isCascadePersist

      public boolean isCascadePersist()
      PUBLIC: Check cascading value for the CREATE operation.

    • isCascadeMerge

      public boolean isCascadeMerge()
      PUBLIC: Check cascading value for the MERGE operation.

    • isCascadeRefresh

      public boolean isCascadeRefresh()
      PUBLIC: Check cascading value for the REFRESH operation.

    • isCascadeRemove

      public boolean isCascadeRemove()
      PUBLIC: Check cascading value for the REMOVE operation.

    • hasDependency

      public boolean hasDependency()
      INTERNAL: Return if the mapping has any ownership or other dependency over its target object(s).
      Overrides:
      hasDependency in class DatabaseMapping

    • isForeignReferenceMapping

      public boolean isForeignReferenceMapping()
      INTERNAL:
      Overrides:
      isForeignReferenceMapping in class DatabaseMapping

    • isJoiningSupported

      public boolean isJoiningSupported()
      INTERNAL: Return if this mapping supports joining.
      Overrides:
      isJoiningSupported in class DatabaseMapping

    • isPrivateOwned

      public boolean isPrivateOwned()
      PUBLIC: Return true if referenced objects are privately owned else false.
      Overrides:
      isPrivateOwned in class DatabaseMapping

    • iterate

      public void iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator)
      INTERNAL: Iterate on the iterator's current object's attribute defined by this mapping. The iterator's settings for cascading and value holders determine how the iteration continues from here.
      Specified by:
      iterate in class DatabaseMapping

    • iterateOnRealAttributeValue

      public abstract void iterateOnRealAttributeValue(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator, Object realAttributeValue)
      INTERNAL: Iterate on the attribute value. The value holder has already been processed.
      Overrides:
      iterateOnRealAttributeValue in class DatabaseMapping

    • load

      public void load(Object object, org.eclipse.persistence.internal.queries.AttributeItem item, org.eclipse.persistence.internal.sessions.AbstractSession session, boolean fromFetchGroup)
      Force instantiation of the load group.
      Overrides:
      load in class DatabaseMapping

    • mergeRemoteValueHolder

      public void mergeRemoteValueHolder(Object clientSideDomainObject, Object serverSideDomainObject, org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
      INTERNAL: Replace the client value holder with the server value holder, after copying some of the settings from the client value holder.

    • privateOwnedRelationship

      public void privateOwnedRelationship()
      PUBLIC: Sets the reference object to be a private owned. The default behavior is non private owned, or independent.
      See Also:

    • readFromRowIntoObject

      public Object readFromRowIntoObject(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, Object targetObject, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected) throws DatabaseException
      INTERNAL: Extract value from the row and set the attribute to this value in the object. return value as this value will have been converted to the appropriate type for the object.
      Overrides:
      readFromRowIntoObject in class DatabaseMapping
      Throws:
      DatabaseException

    • remoteInitialization

      public void remoteInitialization(DistributedSession session)
      INTERNAL: Once descriptors are serialized to the remote session. All its mappings and reference descriptors are traversed. Usually mappings are initialized and serialized reference descriptors are replaced with local descriptors if they already exist on the remote session.
      Overrides:
      remoteInitialization in class DatabaseMapping

    • replaceValueHoldersIn

      public Map replaceValueHoldersIn(Object object, org.eclipse.persistence.internal.sessions.remote.RemoteSessionController controller)
      INTERNAL: replace the value holders in the specified reference object(s)
      Overrides:
      replaceValueHoldersIn in class DatabaseMapping

    • requiresTransientWeavedFields

      public boolean requiresTransientWeavedFields()
      Returns true if this mappings associated weaved field requires a transient setting to avoid metadata processing.

    • setCascadeAll

      public void setCascadeAll(boolean value)
      PUBLIC: Sets the cascading for all JPA operations.

    • setCascadeDetach

      public void setCascadeDetach(boolean value)
      PUBLIC: Sets the cascading for the JPA detach operation.

    • setCascadePersist

      public void setCascadePersist(boolean value)
      PUBLIC: Sets the cascading for the JPA CREATE operation.

    • setCascadeMerge

      public void setCascadeMerge(boolean value)
      PUBLIC: Sets the cascading for the JPA MERGE operation.

    • setCascadeRefresh

      public void setCascadeRefresh(boolean value)
      PUBLIC: Sets the cascading for the JPA REFRESH operation.

    • setCascadeRemove

      public void setCascadeRemove(boolean value)
      PUBLIC: Sets the cascading for the JPA REMOVE operation.

    • setCustomSelectionQuery

      public void setCustomSelectionQuery(ReadQuery query)
      PUBLIC: Relationship mappings creates a read query to read reference objects. If this default query needs to be customize then user can specify its own read query to do the reading of reference objects. One must instance of ReadQuery or subclasses of the ReadQuery.

    • setHasCustomSelectionQuery

      protected void setHasCustomSelectionQuery(boolean bool)

    • setForceInitializationOfSelectionCriteria

      public void setForceInitializationOfSelectionCriteria(boolean bool)
      INTERNAL: A way of forcing the selection criteria to be rebuilt.

    • setIndirectionPolicy

      public void setIndirectionPolicy(org.eclipse.persistence.internal.indirection.IndirectionPolicy indirectionPolicy)
      ADVANCED: Set the indirection policy.

    • setIsPrivateOwned

      public void setIsPrivateOwned(boolean isPrivateOwned)
      PUBLIC: Set if the relationship is privately owned. A privately owned relationship means the target object is a dependent part of the source object and is not referenced by any other object and cannot exist on its own. Private ownership causes many operations to be cascaded across the relationship, including, deletion, insertion, refreshing, locking (when cascaded). It also ensures that private objects removed from collections are deleted and object added are inserted.

    • setRealAttributeValueInObject

      public void setRealAttributeValueInObject(Object object, Object value) throws DescriptorException
      INTERNAL: Set the value of the attribute mapped by this mapping, placing it inside a value holder if necessary. If the value holder is not instantiated then it is instantiated.
      Overrides:
      setRealAttributeValueInObject in class DatabaseMapping
      Throws:
      DescriptorException

    • setReferenceClass

      public void setReferenceClass(Class referenceClass)
      PUBLIC: Set the referenced class.

    • setReferenceClassName

      public void setReferenceClassName(String referenceClassName)
      INTERNAL: Used by MW.

    • setReferenceDescriptor

      protected void setReferenceDescriptor(ClassDescriptor aDescriptor)
      Set the referenceDescriptor. This is a descriptor which is associated with the reference class.

    • setRelationshipPartner

      public void setRelationshipPartner(DatabaseMapping mapping)
      INTERNAL: Sets the relationshipPartner mapping for this bi-directional mapping. If the relationshipPartner is null then this is a uni-directional mapping.

    • setRelationshipPartnerAttributeName

      public void setRelationshipPartnerAttributeName(String attributeName)
      PUBLIC: Use this method to specify the relationship partner attribute name of a bidirectional Mapping. TopLink will use the attribute name to find the back pointer mapping to maintain referential integrity of the bi-directional mappings.

    • setRequiresTransientWeavedFields

      public void setRequiresTransientWeavedFields(boolean requiresTransientWeavedFields)
      Set this flag if this mappings associated weaved field requires a transient setting to avoid metadata processing.

    • setSelectionCriteria

      public void setSelectionCriteria(Expression anExpression)
      PUBLIC: Sets the selection criteria to be used as a where clause to read reference objects. This criteria is automatically generated by the TopLink if not explicitly specified by the user.

    • setSelectionQuery

      protected void setSelectionQuery(ReadQuery aQuery)
      Sets the query

    • setSelectionSQLString

      public void setSelectionSQLString(String sqlString)
      PUBLIC: This is a property on the mapping which will allow custom SQL to be substituted for reading a reference object.

    • setSelectionCall

      public void setSelectionCall(Call call)
      PUBLIC: This is a property on the mapping which will allow custom call to be substituted for reading a reference object.

    • setShouldExtendPessimisticLockScope

      public void setShouldExtendPessimisticLockScope(boolean shouldExtend)
      ADVANCED: Indicates whether pessimistic lock of ObjectLevelReadQuery with isPessimisticLockScopeExtended set to true should be applied through this mapping beyond the tables mapped to the source object.

    • setTempSession

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

    • setUsesBatchReading

      public void setUsesBatchReading(boolean usesBatchReading)
      PUBLIC: Indicates whether the referenced object should always be batch read on read all queries. Batch reading will read all of the related objects in a single query when accessed from an originating read all. This should only be used if it is know that the related objects are always required with the source object, or indirection is not used.
      See Also:

    • setUsesIndirection

      public void setUsesIndirection(boolean usesIndirection)
      PUBLIC: Indirection means that a ValueHolder will be put in-between the attribute and the real object. This allows for the reading of the target from the database to be delayed until accessed. This defaults to true and is strongly suggested as it give a huge performance gain.
      See Also:

    • shouldExtendPessimisticLockScope

      public boolean shouldExtendPessimisticLockScope()
      INTERNAL: Indicates whether pessimistic lock of ObjectLevelReadQuery with isPessimisticLockScopeExtended set to true should be applied through this mapping beyond the tables mapped to the source object.

    • shouldExtendPessimisticLockScopeInSourceQuery

      public boolean shouldExtendPessimisticLockScopeInSourceQuery()

    • shouldExtendPessimisticLockScopeInTargetQuery

      public boolean shouldExtendPessimisticLockScopeInTargetQuery()

    • shouldExtendPessimisticLockScopeInDedicatedQuery

      public boolean shouldExtendPessimisticLockScopeInDedicatedQuery()

    • shouldForceInitializationOfSelectionCriteria

      protected boolean shouldForceInitializationOfSelectionCriteria()
      INTERNAL:

    • shouldInitializeSelectionCriteria

      protected boolean shouldInitializeSelectionCriteria()

    • shouldMergeCascadeParts

      public boolean shouldMergeCascadeParts(org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
      INTERNAL: Returns true if the merge should cascade to the mappings reference's parts.

    • shouldRefreshCascadeParts

      public boolean shouldRefreshCascadeParts(org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
      INTERNAL: Returns true if the merge should cascade to the mappings reference's parts.

    • shouldMergeCascadeReference

      protected boolean shouldMergeCascadeReference(org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
      Returns true if the merge should cascade to the mappings reference.

    • shouldObjectModifyCascadeToParts

      protected boolean shouldObjectModifyCascadeToParts(ObjectLevelModifyQuery query)
      Returns true if any process leading to object modification should also affect its parts Usually used by write, insert, update and delete.

    • shouldUseBatchReading

      public boolean shouldUseBatchReading()
      PUBLIC: Indicates whether the referenced object should always be batch read on read all queries. Batch reading will read all of the related objects in a single query when accessed from an originating read all. This should only be used if it is know that the related objects are always required with the source object, or indirection is not used.

    • useBasicIndirection

      public void useBasicIndirection()
      PUBLIC: Indirection means that a ValueHolder will be put in-between the attribute and the real object. This allows for the reading of the target from the database to be delayed until accessed. This defaults to true and is strongly suggested as it give a huge performance gain.

    • useBatchReading

      public void useBatchReading()
      PUBLIC: Indicates whether the referenced object should always be batch read on read all queries. Batch reading will read all of the related objects in a single query when accessed from an originating read all. This should only be used if it is know that the related objects are always required with the source object, or indirection is not used.

    • useWeavedIndirection

      public void useWeavedIndirection(String getMethodName, String setMethodName, boolean hasUsedMethodAccess)
      INTERNAL: Configures the mapping to used weaved indirection. This requires that the toplink-agent be used to weave indirection into the class. This policy is only require for method access.
      Parameters:
      getMethodName - is the name of the original (or weaved in field access case) set method for the mapping.
      setMethodName - is the name of the original (or weaved in field access case) set method for the mapping.
      hasUsedMethodAccess - indicates whether method or field access was originally used.

    • useContainerIndirection

      public void useContainerIndirection(Class containerClass)
      PUBLIC: Indirection means that a IndirectContainer (wrapping a ValueHolder) will be put in-between the attribute and the real object. This allows for an application specific class to be used which wraps the value holder. The purpose of this is that the domain objects will not require to import the ValueHolderInterface class. Refer also to transparent indirection for a transparent solution to indirection.

    • usesIndirection

      public boolean usesIndirection()
      PUBLIC: Indirection means that some sort of indirection object will be put in-between the attribute and the real object. This allows for the reading of the target from the database to be delayed until accessed. This defaults to true and is strongly suggested as it give a huge performance gain.

    • updateChangeRecordForSelfMerge

      public abstract void updateChangeRecordForSelfMerge(org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, Object source, Object target, org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet parentUOWChangeSet, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
      INTERNAL: Update a ChangeRecord to replace the ChangeSet for the old entity with the changeSet for the new Entity. This is used when an Entity is merged into itself and the Entity reference new or detached entities.

    • setJoinFetch

      public void setJoinFetch(int joinFetch)
      PUBLIC: Indicates whether the referenced object(s) should always be joined on read queries. Joining will join the two classes tables to read all of the data in a single query. This should only be used if it is know that the related objects are always required with the source object, or indirection is not used. A join-fetch can either use an INNER_JOIN or OUTER_JOIN, if the relationship may reference null or an empty collection an outer join should be used to avoid filtering the source objects from the queries. Join fetch can also be specified on the query, and it is normally more efficient to do so as some queries may not require the related objects. Typically batch reading is more efficient than join fetching and should be considered, especially for collection relationships.
      See Also:

    • getJoinFetch

      public int getJoinFetch()
      PUBLIC: Return if this relationship should always be join fetched.

    • setMappedBy

      public void setMappedBy(String mappedBy)
      INTERNAL: Called by JPA metadata processing to store the owning mapping for this mapping
      Parameters:
      mappedBy -

    • isJoinFetched

      public boolean isJoinFetched()
      PUBLIC: Return if this relationship should always be join fetched.

    • isInnerJoinFetched

      public boolean isInnerJoinFetched()
      PUBLIC: Return if this relationship should always be INNER join fetched.

    • isOuterJoinFetched

      public boolean isOuterJoinFetched()
      PUBLIC: Return if this relationship should always be OUTER join fetched.

    • useInnerJoinFetch

      public void useInnerJoinFetch()
      PUBLIC: Specify this relationship to always be join fetched using an INNER join.

    • useOuterJoinFetch

      public void useOuterJoinFetch()
      PUBLIC: Specify this relationship to always be join fetched using an OUTER join.

    • isCascadeOnDeleteSetOnDatabase

      public boolean isCascadeOnDeleteSetOnDatabase()
      ADVANCED: Return if delete cascading has been set on the database for the mapping's foreign key constraint.

    • setIsCascadeOnDeleteSetOnDatabase

      public void setIsCascadeOnDeleteSetOnDatabase(boolean isCascadeOnDeleteSetOnDatabase)
      ADVANCED: Set if delete cascading has been set on the database for the mapping's foreign key constraint. The behavior is dependent on the mapping.

      OneToOne (target foreign key) - deletes target object (private owned)

      OneToMany, AggregateCollection - deletes target objects (private owned)

      ManyToMany - deletes from join table (only)

      DirectCollection - delete from direct table

    • setIsCacheable

      public void setIsCacheable(boolean cacheable)
      Used to signal that this mapping references a protected/isolated entity and requires special merge/object building behaviour.
      Overrides:
      setIsCacheable in class DatabaseMapping

    • validateBeforeInitialization

      public void validateBeforeInitialization(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
      INTERNAL: To validate mappings declaration
      Overrides:
      validateBeforeInitialization in class DatabaseMapping
      Throws:
      DescriptorException

    • valueFromPKList

      public abstract Object valueFromPKList(Object[] pks, org.eclipse.persistence.internal.sessions.AbstractRecord foreignKeys, org.eclipse.persistence.internal.sessions.AbstractSession session)
      This method is used to load a relationship from a list of PKs. This list may be available if the relationship has been cached.

    • valueFromRow

      public Object valueFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected, Boolean[] wasCacheUsed) throws DatabaseException
      INTERNAL: Return the value of the reference attribute or a value holder. Check whether the mapping's attribute should be optimized through batch and joining.
      Overrides:
      valueFromRow in class DatabaseMapping
      Throws:
      DatabaseException

    • shouldUseValueFromRowWithJoin

      protected boolean shouldUseValueFromRowWithJoin(org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery)
      INTERNAL: Indicates whether valueFromRow should call valueFromRowInternalWithJoin (true) or valueFromRowInternal (false)

    • valueFromRowInternalWithJoin

      protected 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: If the query used joining or partial attributes, build the target object directly. If isJoiningSupported()==true then this method must be overridden.
      Throws:
      DatabaseException

    • valueFromRowInternal

      protected 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 reference attribute or a value holder. Check whether the mapping's attribute should be optimized through batch and joining.
      Throws:
      DatabaseException

    • valueFromRowInternal

      protected 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, boolean shouldUseSopObject) throws DatabaseException
      INTERNAL: Return the value of the reference attribute or a value holder. Check whether the mapping's attribute should be optimized through batch and joining.
      Parameters:
      shouldUseSopObject - indicates whether sopObject stored in the row should be used to extract the value (and fields/values stored in the row ignored).
      Throws:
      DatabaseException

    • isExtendingPessimisticLockScope

      protected boolean isExtendingPessimisticLockScope(ObjectBuildingQuery sourceQuery)
      INTERNAL: Indicates whether the source query's pessimistic lock scope scope should be extended in the target query.

    • prepareHistoricalQuery

      protected ReadQuery prepareHistoricalQuery(ReadQuery targetQuery, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
      INTERNAL: Allow for the mapping to perform any historical query additions. Return the new target query.

    • trimRowForJoin

      public org.eclipse.persistence.internal.sessions.AbstractRecord trimRowForJoin(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
      INTERNAL: Return a sub-partition of the row starting at the index for the mapping.

    • trimRowForJoin

      public org.eclipse.persistence.internal.sessions.AbstractRecord trimRowForJoin(org.eclipse.persistence.internal.sessions.AbstractRecord row, Object value, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
      INTERNAL: Return a sub-partition of the row starting at the index.

    • prepareNestedJoinQueryClone

      protected ObjectLevelReadQuery prepareNestedJoinQueryClone(org.eclipse.persistence.internal.sessions.AbstractRecord row, List dataResults, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
      INTERNAL: Prepare the clone of the nested query for joining. The nested query clones are stored on the execution (clone) joinManager to avoid cloning per row.

    • getBatchFetchType

      public BatchFetchType getBatchFetchType()
      PUBLIC: Return the type of batch fetching to use for all queries for this class if configured.

    • setBatchFetchType

      public void setBatchFetchType(BatchFetchType batchFetchType)
      PUBLIC: Set the type of batch fetching to use for all queries for this class.

    • addTargetForeignKeyField

      public void addTargetForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField targetForeignKeyField, org.eclipse.persistence.internal.helper.DatabaseField sourcePrimaryKeyField)
      INTERNAL: Allow subclass to define a foreign key in the target's table.

    • addForeignKeyField

      public void addForeignKeyField(org.eclipse.persistence.internal.helper.DatabaseField sourceForeignKeyField, org.eclipse.persistence.internal.helper.DatabaseField targetPrimaryKeyField)
      INTERNAL: Allow subclass to define a foreign key in the source's table.

    • getOrderByNormalizedExpressions

      public List<Expression> getOrderByNormalizedExpressions(Expression base)
      INTERNAL: Relationships order by their target primary key fields by default.
      Overrides:
      getOrderByNormalizedExpressions in class DatabaseMapping