org.eclipse.persistence.mappings.foundation

Class AbstractCompositeDirectCollectionMapping

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.foundation.AbstractCompositeDirectCollectionMapping

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, ContainerMapping, ArrayCollectionMapping

Direct Known Subclasses:

ArrayMapping, EISCompositeDirectCollectionMapping, XMLCompositeDirectCollectionMapping, XMLFragmentCollectionMapping

public abstract class AbstractCompositeDirectCollectionMapping
extends DatabaseMapping
implements ContainerMapping, ArrayCollectionMapping

AbstractCompositeDirectCollectionMapping consolidates the behavior of mappings that map collections of "native" data objects (e.g. Strings). These are objects that do not have their own descriptor and repeat within the XML record for the containing object.

See Also:

Serialized Form

Author:

Big Country

Since:

TOPLink/Java 3.0

Nested Class Summary

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

DatabaseMapping.WriteType

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	elementDataTypeName This is the "data type" associated with each element in the nested collection.
protected org.eclipse.persistence.internal.helper.DatabaseField	field This is the field holding the nested collection.
protected Converter	valueConverter Allows user defined conversion between the object value and the database value.

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

attributeAccessor, attributeName, derivedIdMapping, derivesId, descriptor, fields, isCacheable, isInSopObject, isJPAId, isLazy, isMapKeyMapping, isOptional, isPrimaryKeyMapping, isReadOnly, isRemotelyInitialized, mapsIdValue, NO_FIELDS, NO_WEIGHT, properties, unconvertedProperties, weight, WEIGHT_AGGREGATE, WEIGHT_DIRECT, WEIGHT_TO_ONE, WEIGHT_TRANSFORM

Constructor Summary

Constructors

Constructor and Description
AbstractCompositeDirectCollectionMapping() Default constructor.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	buildAddedElementFromChangeSet(java.lang.Object changeSet, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) INTERNAL: Build and return a new element based on the change set.
void	buildBackupClone(java.lang.Object clone, java.lang.Object backup, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork) INTERNAL: Clone the attribute from the clone and assign it to the backup.
java.lang.Object	buildChangeSet(java.lang.Object element, org.eclipse.persistence.internal.sessions.ObjectChangeSet owner, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Build and return a change set for the specified element.
void	buildClone(java.lang.Object original, org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey, java.lang.Object clone, java.lang.Integer refreshCascade, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession) INTERNAL: Clone the attribute from the original and assign it to the clone.
void	buildCloneFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, java.lang.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: Extract value from the row and set the attribute to this value in the working copy clone.
protected java.lang.Object	buildClonePart(java.lang.Object attributeValue, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractSession cloningSession) Build and return a clone of the specified attribute value.
void	buildCopy(java.lang.Object copy, java.lang.Object original, CopyGroup group) INTERNAL: Copy of the attribute of the object.
protected java.lang.Object	buildElementFromChangeSet(java.lang.Object changeSet, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) Build and return a new element based on the change set.
java.lang.Object	buildElementFromElement(java.lang.Object object, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) INTERNAL: Build and return a new element based on the specified element.
java.lang.Object	buildRemovedElementFromChangeSet(java.lang.Object changeSet, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) INTERNAL: Build and return a new element based on the change set.
void	cascadePerformRemoveIfRequired(java.lang.Object object, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow, java.util.Map visitedObjects) INTERNAL: Cascade perform delete through mappings that require the cascade
void	cascadeRegisterNewIfRequired(java.lang.Object object, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow, java.util.Map visitedObjects) INTERNAL: Cascade registerNew for Create through mappings that require the cascade
protected java.util.Vector	collectFields() Return the fields handled by the mapping.
boolean	compareElements(java.lang.Object element1, java.lang.Object element2, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Compare the non-null elements.
boolean	compareElementsForChange(java.lang.Object element1, java.lang.Object element2, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Compare the non-null elements and return true if they are alike.
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 session) INTERNAL: Build and return the change record that results from comparing the two direct collection attributes.
boolean	compareObjects(java.lang.Object object1, java.lang.Object object2, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Compare the attributes belonging to this mapping for the objects.
void	convertClassNamesToClasses(java.lang.ClassLoader classLoader) INTERNAL: Convert all the class-name-based settings in this mapping to actual class-based settings This method is implemented by subclasses as necessary.
protected org.eclipse.persistence.internal.sessions.ChangeRecord	convertToChangeRecord(java.lang.Object cloneCollection, org.eclipse.persistence.internal.sessions.ObjectChangeSet owner, org.eclipse.persistence.internal.sessions.AbstractSession session)
java.lang.Object	createMapComponentFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.sessions.AbstractSession session, boolean isTargetProtected) INTERNAL Called when a DatabaseMapping is used to map the key in a collection.
void	fixObjectReferences(java.lang.Object object, java.util.Map objectDescriptors, java.util.Map processedObjects, ObjectLevelReadQuery query, DistributedSession session) INTERNAL: An object has been serialized from the server to the client.
java.lang.Class	getAttributeElementClass() PUBLIC: Return the class each element in the object's collection should be converted to, before the collection is inserted into the object.
org.eclipse.persistence.internal.queries.ContainerPolicy	getContainerPolicy() INTERNAL: Return the mapping's containerPolicy.
org.eclipse.persistence.internal.helper.DatabaseField	getField() INTERNAL: Return the field that holds the nested collection.
java.lang.Class	getFieldClassification(org.eclipse.persistence.internal.helper.DatabaseField fieldToClassify) INTERNAL: Return the classifiction for the field contained in the mapping.
java.lang.Class	getFieldElementClass() PUBLIC: Return the class each element in the database row's collection should be converted to, before the collection is inserted into the database.
java.lang.String	getFieldName() PUBLIC: Return the name of the field that holds the nested collection.
java.lang.Object	getRealCollectionAttributeValueFromObject(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Convenience method.
Converter	getValueConverter() PUBLIC: Return the converter on the mapping.
boolean	hasValueConverter() PUBLIC: Indicates if there is a converter on the mapping.
void	initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Initialize the mapping.
boolean	isAbstractCompositeDirectCollectionMapping() INTERNAL:
boolean	isCollectionMapping() INTERNAL: Related mapping should implement this method to return true.
void	iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator) INTERNAL: Iterate on the appropriate attribute value.
boolean	mapKeyHasChanged(java.lang.Object element, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Return whether the element's user-defined Map key has changed since it was cloned from the original version.
void	mergeChangesIntoObject(java.lang.Object target, org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) INTERNAL: Merge changes from the source to the target object.
void	mergeIntoObject(java.lang.Object target, boolean isTargetUnInitialized, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) INTERNAL: Merge changes from the source to the target object.
void	setAttributeElementClass(java.lang.Class attributeElementClass) PUBLIC: Set the class each element in the object's collection should be converted to, before the collection is inserted into the object.
void	setAttributeElementClassName(java.lang.String attributeElementClass) PUBLIC: Set the class each element in the object's collection should be converted to, before the collection is inserted into the object.
void	setContainerPolicy(org.eclipse.persistence.internal.queries.ContainerPolicy containerPolicy) ADVANCED: Set the mapping's containerPolicy.
void	setField(org.eclipse.persistence.internal.helper.DatabaseField field) Set the field that holds the nested collection.
void	setFieldElementClass(java.lang.Class fieldElementClass) PUBLIC: Set the class each element in the database row's collection should be converted to, before the collection is inserted into the database.
void	setUsesSingleNode(boolean usesSingleNode) PUBLIC: Sets whether the mapping uses a single node.
void	setValueConverter(Converter valueConverter) PUBLIC: Set the converter on the mapping.
void	simpleAddToCollectionChangeRecord(java.lang.Object referenceKey, java.lang.Object changeSetToAdd, org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet, org.eclipse.persistence.internal.sessions.AbstractSession session) ADVANCED: This method is used to have an object add to a collection once the changeSet is applied The referenceKey parameter should only be used for direct Maps.
void	simpleRemoveFromCollectionChangeRecord(java.lang.Object referenceKey, java.lang.Object changeSetToRemove, org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet, org.eclipse.persistence.internal.sessions.AbstractSession session) ADVANCED: This method is used to have an object removed from a collection once the changeSet is applied The referenceKey parameter should only be used for direct Maps.
void	useCollectionClass(java.lang.Class concreteClass) PUBLIC: Configure the mapping to use an instance of the specified container class to hold the nested objects.
void	useCollectionClassName(java.lang.String concreteClassName) INTERNAL: Used to set the collection class by name.
void	useListClassName(java.lang.String concreteClassName) INTERNAL: Used to set the collection class by name.
void	useMapClass(java.lang.Class concreteClass, java.lang.String methodName) PUBLIC: Mapping does not support Map containers.
void	useMapClassName(java.lang.String concreteContainerClassName, java.lang.String methodName) PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target objects.
boolean	usesSingleNode() PUBLIC: Checks whether the mapping uses a single node.
java.lang.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, java.lang.Boolean[] wasCacheUsed) INTERNAL: Build the nested collection from the database row.
void	writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType) INTERNAL: Get the attribute value from the object and store it in the appropriate field of the row.
void	writeFromObjectIntoRowForUpdate(WriteObjectQuery writeQuery, org.eclipse.persistence.internal.sessions.AbstractRecord row) INTERNAL: If any part of the nested collection has changed, the whole thing is written.
void	writeFromObjectIntoRowWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType) INTERNAL: Get the appropriate attribute value from the object and put it in the appropriate field of the database row.
void	writeInsertFieldsIntoRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Write the fields needed for insert into the template with null values.

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

addUnconvertedProperty, buildBackupCloneForPartObject, buildChangeRecord, buildCloneForPartObject, buildContainerClone, buildExpression, buildObjectJoinExpression, buildObjectJoinExpression, buildShallowOriginalFromRow, calculateDeferredChanges, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemovePrivateOwnedObjectFromChangeSetIfRequired, clone, cloneFields, collectQueryParameters, convertConverterClassNamesToClasses, createCloneValueHolder, derivesId, earlyPreDelete, extractNestedExpressions, extractNestedNonAggregateExpressions, fixRealObjectReferences, getAttributeAccessor, getAttributeClassification, getAttributeName, getAttributeValueFromObject, getDerivedIdMapping, getDescriptor, getFields, getGetMethodName, getMapsIdValue, getObjectCorrespondingTo, getOrderByNormalizedExpressions, getProperties, getProperty, getRealAttributeValueFromAttribute, getRealAttributeValueFromObject, getReferenceDescriptor, getRelationshipPartner, getSelectFields, getSelectTables, getSetMethodName, getUnconvertedProperties, getValueFromRemoteValueHolder, getWeight, hasConstraintDependency, hasDependency, hasInverseConstraintDependency, hasMapsIdValue, hasNestedIdentityReference, hasRootExpressionThatShouldUseOuterJoin, hasUnconvertedProperties, instantiateAttribute, isAbstractColumnMapping, isAbstractCompositeCollectionMapping, isAbstractCompositeObjectMapping, isAbstractDirectMapping, isAggregateCollectionMapping, isAggregateMapping, isAggregateObjectMapping, isAttributeValueFromObjectInstantiated, isCacheable, isCandidateForPrivateOwnedRemoval, isCascadedLockingSupported, isChangeTrackingSupported, isCloningRequired, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isEISMapping, isElementCollectionMapping, isForeignReferenceMapping, isInAndOutSopObject, isInOnlySopObject, isInSopObject, isJoiningSupported, isJPAId, isLazy, isLockableMapping, isManyToManyMapping, isManyToOneMapping, isMapKeyMapping, isMultitenantPrimaryKeyMapping, isNestedTableMapping, isObjectReferenceMapping, isOneToManyMapping, isOneToOneMapping, isOptional, isOutOnlySopObject, isOutSopObject, isOwned, isPrimaryKeyMapping, isPrivateOwned, isReadOnly, isReferenceMapping, isRelationalMapping, isRemotelyInitialized, isStructureMapping, isTransformationMapping, isUnidirectionalOneToManyMapping, isUsingMethodAccess, isVariableOneToOneMapping, isWriteOnly, isXMLMapping, iterateOnRealAttributeValue, load, loadAll, performDataModificationEvent, postCalculateChanges, postCalculateChangesOnDeleted, postDelete, postInitialize, postInitializeSourceAndTargetExpressions, postInsert, postUpdate, preDelete, preInitialize, preInsert, prepareCascadeLockingPolicy, preUpdate, readFromResultSetIntoObject, readFromRowIntoObject, readOnly, readWrite, recordPrivateOwnedRemovals, rehashFieldDependancies, remoteInitialization, remotelyInitialized, replaceValueHoldersIn, setAttributeAccessor, setAttributeName, setAttributeValueInObject, setChangeListener, setDerivedIdMapping, setDerivesId, setDescriptor, setFields, setGetMethodName, setIsCacheable, setIsInAndOutSopObject, setIsInSopObject, setIsJPAId, setIsLazy, setIsMapKeyMapping, setIsOptional, setIsOutSopObject, setIsPrimaryKeyMapping, setIsReadOnly, setMapsIdValue, setProperties, setProperty, setRealAttributeValueInObject, setSetMethodName, setWeight, toString, updateChangeRecord, updateCollectionChangeRecord, validateAfterInitialization, validateBeforeInitialization, valueFromObject, valueFromResultSet, valueFromRow, verifyDelete, writeFromAttributeIntoRow, writeFromObjectIntoRowForShallowInsert, writeFromObjectIntoRowForShallowInsertWithChangeRecord, writeFromObjectIntoRowForUpdateAfterShallowInsert, writeFromObjectIntoRowForUpdateBeforeShallowDelete, writeFromObjectIntoRowForWhereClause, writeUpdateFieldsIntoRow

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.persistence.mappings.structures.ArrayCollectionMapping

getAttributeName, setRealAttributeValueInObject

Field Detail

field

protected org.eclipse.persistence.internal.helper.DatabaseField field

This is the field holding the nested collection.

elementDataTypeName

protected java.lang.String elementDataTypeName

This is the "data type" associated with each element in the nested collection. Depending on the data store, this could be optional.

valueConverter

protected Converter valueConverter

Allows user defined conversion between the object value and the database value.

Constructor Detail

AbstractCompositeDirectCollectionMapping

public AbstractCompositeDirectCollectionMapping()

Default constructor.

Method Detail

getValueConverter

public Converter getValueConverter()

PUBLIC: Return the converter on the mapping. A converter can be used to convert between the direct collection's object value and database value.

hasValueConverter

public boolean hasValueConverter()

PUBLIC: Indicates if there is a converter on the mapping.

setValueConverter

public void setValueConverter(Converter valueConverter)

PUBLIC: Set the converter on the mapping. A converter can be used to convert between the direct collection's object value and database value.

buildAddedElementFromChangeSet

public java.lang.Object buildAddedElementFromChangeSet(java.lang.Object changeSet,
                                                       org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                                       org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Build and return a new element based on the change set.

Specified by:

buildAddedElementFromChangeSet in interface ArrayCollectionMapping

buildBackupClone

public void buildBackupClone(java.lang.Object clone,
                             java.lang.Object backup,
                             org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)

INTERNAL: Clone the attribute from the clone and assign it to the backup. For these mappings, this is the same as building the first clone.

Specified by:

buildBackupClone in class DatabaseMapping

buildChangeSet

public java.lang.Object buildChangeSet(java.lang.Object element,
                                       org.eclipse.persistence.internal.sessions.ObjectChangeSet owner,
                                       org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Build and return a change set for the specified element. Direct collections simply store the element itself, since it is immutable.

Specified by:

buildChangeSet in interface ArrayCollectionMapping

buildClone

public void buildClone(java.lang.Object original,
                       org.eclipse.persistence.internal.identitymaps.CacheKey cacheKey,
                       java.lang.Object clone,
                       java.lang.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 row,
                              org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                              java.lang.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: 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

buildClonePart

protected java.lang.Object buildClonePart(java.lang.Object attributeValue,
                                          org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                          org.eclipse.persistence.internal.sessions.AbstractSession cloningSession)

Build and return a clone of the specified attribute value.

buildCopy

public void buildCopy(java.lang.Object copy,
                      java.lang.Object original,
                      CopyGroup group)

INTERNAL: Copy of the attribute of the object. This is NOT used for unit of work but for templatizing an object.

Overrides:

buildCopy in class DatabaseMapping

buildElementFromChangeSet

protected java.lang.Object buildElementFromChangeSet(java.lang.Object changeSet,
                                                     org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                                     org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

Build and return a new element based on the change set. Direct collections simply store the element itself, since it is immutable.

buildElementFromElement

public java.lang.Object buildElementFromElement(java.lang.Object object,
                                                org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                                org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Build and return a new element based on the specified element. Direct collections simply return the element itself, since it is immutable.

Specified by:

buildElementFromElement in interface ArrayCollectionMapping

buildRemovedElementFromChangeSet

public java.lang.Object buildRemovedElementFromChangeSet(java.lang.Object changeSet,
                                                         org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                                         org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Build and return a new element based on the change set.

Specified by:

buildRemovedElementFromChangeSet in interface ArrayCollectionMapping

cascadePerformRemoveIfRequired

public void cascadePerformRemoveIfRequired(java.lang.Object object,
                                           org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow,
                                           java.util.Map visitedObjects)

INTERNAL: Cascade perform delete through mappings that require the cascade

Specified by:

cascadePerformRemoveIfRequired in class DatabaseMapping

cascadeRegisterNewIfRequired

public void cascadeRegisterNewIfRequired(java.lang.Object object,
                                         org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow,
                                         java.util.Map visitedObjects)

INTERNAL: Cascade registerNew for Create through mappings that require the cascade

Specified by:

cascadeRegisterNewIfRequired in class DatabaseMapping

collectFields

protected java.util.Vector collectFields()

Return the fields handled by the mapping.

Overrides:

collectFields in class DatabaseMapping

compareElements

public boolean compareElements(java.lang.Object element1,
                               java.lang.Object element2,
                               org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Compare the non-null elements. Return true if they are alike. Use #equals() to determine if two elements are the same.

Specified by:

compareElements in interface ArrayCollectionMapping

compareElementsForChange

public boolean compareElementsForChange(java.lang.Object element1,
                                        java.lang.Object element2,
                                        org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Compare the non-null elements and return true if they are alike.

Specified by:

compareElementsForChange in interface ArrayCollectionMapping

convertToChangeRecord

protected org.eclipse.persistence.internal.sessions.ChangeRecord convertToChangeRecord(java.lang.Object cloneCollection,
                                                                                       org.eclipse.persistence.internal.sessions.ObjectChangeSet owner,
                                                                                       org.eclipse.persistence.internal.sessions.AbstractSession session)

fixObjectReferences

public void fixObjectReferences(java.lang.Object object,
                                java.util.Map objectDescriptors,
                                java.util.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

getAttributeElementClass

public java.lang.Class getAttributeElementClass()

PUBLIC: Return the class each element in the object's collection should be converted to, before the collection is inserted into the object. This is optional - if left null, the elements will be added to the object's collection unconverted.

getContainerPolicy

public org.eclipse.persistence.internal.queries.ContainerPolicy getContainerPolicy()

INTERNAL: Return the mapping's containerPolicy.

Specified by:

getContainerPolicy in interface ContainerMapping

Overrides:

getContainerPolicy in class DatabaseMapping

getField

public org.eclipse.persistence.internal.helper.DatabaseField getField()

INTERNAL: Return the field that holds the nested collection.

Overrides:

getField in class DatabaseMapping

isAbstractCompositeDirectCollectionMapping

public boolean isAbstractCompositeDirectCollectionMapping()

INTERNAL:

Overrides:

isAbstractCompositeDirectCollectionMapping in class DatabaseMapping

getFieldElementClass

public java.lang.Class getFieldElementClass()

PUBLIC: Return the class each element in the database row's collection should be converted to, before the collection is inserted into the database. This is optional - if left null, the elements will be added to the database row's collection unconverted.

getFieldName

public java.lang.String getFieldName()

PUBLIC: Return the name of the field that holds the nested collection.

getRealCollectionAttributeValueFromObject

public java.lang.Object getRealCollectionAttributeValueFromObject(java.lang.Object object,
                                                                  org.eclipse.persistence.internal.sessions.AbstractSession session)
                                                           throws DescriptorException

INTERNAL: Convenience method. Return the value of an attribute, unwrapping value holders if necessary. If the value is null, build a new container.

Specified by:

getRealCollectionAttributeValueFromObject in interface ArrayCollectionMapping

Overrides:

getRealCollectionAttributeValueFromObject in class DatabaseMapping

Throws:

DescriptorException

initialize

public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
                throws DescriptorException

INTERNAL: Initialize the mapping.

Overrides:

initialize in class DatabaseMapping

Throws:

DescriptorException

iterate

public void iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator)

INTERNAL: Iterate on the appropriate attribute value.

Specified by:

iterate in class DatabaseMapping

mapKeyHasChanged

public boolean mapKeyHasChanged(java.lang.Object element,
                                org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Return whether the element's user-defined Map key has changed since it was cloned from the original version. Direct elements are not allowed to have keys.

Specified by:

mapKeyHasChanged in interface ArrayCollectionMapping

setAttributeElementClass

public void setAttributeElementClass(java.lang.Class attributeElementClass)

PUBLIC: Set the class each element in the object's collection should be converted to, before the collection is inserted into the object. This is optional - if left null, the elements will be added to the object's collection unconverted.

setAttributeElementClassName

public void setAttributeElementClassName(java.lang.String attributeElementClass)

PUBLIC: Set the class each element in the object's collection should be converted to, before the collection is inserted into the object. This is optional - if left null, the elements will be added to the object's collection unconverted.

setContainerPolicy

public void setContainerPolicy(org.eclipse.persistence.internal.queries.ContainerPolicy containerPolicy)

ADVANCED: Set the mapping's containerPolicy.

Specified by:

setContainerPolicy in interface ContainerMapping

setField

public void setField(org.eclipse.persistence.internal.helper.DatabaseField field)

Set the field that holds the nested collection.

setFieldElementClass

public void setFieldElementClass(java.lang.Class fieldElementClass)

PUBLIC: Set the class each element in the database row's collection should be converted to, before the collection is inserted into the database. This is optional - if left null, the elements will be added to the database row's collection unconverted.

useCollectionClass

public void useCollectionClass(java.lang.Class concreteClass)

PUBLIC: Configure the mapping to use an instance of the specified container class to hold the nested objects.

jdk1.2.x: The container class must implement (directly or indirectly) the Collection interface.

jdk1.1.x: The container class must be a subclass of Vector.

Specified by:

useCollectionClass in interface ContainerMapping

useCollectionClassName

public void useCollectionClassName(java.lang.String concreteClassName)

INTERNAL: Used to set the collection class by name. This is required when building from metadata to allow the correct class loader to be used.

Specified by:

useCollectionClassName in interface ContainerMapping

useListClassName

public void useListClassName(java.lang.String concreteClassName)

INTERNAL: Used to set the collection class by name. This is required when building from metadata to allow the correct class loader to be used.

Specified by:

useListClassName in interface ContainerMapping

useMapClass

public void useMapClass(java.lang.Class concreteClass,
                        java.lang.String methodName)

PUBLIC: Mapping does not support Map containers. It supports only Collection containers.

Specified by:

useMapClass in interface ContainerMapping

useMapClassName

public void useMapClassName(java.lang.String concreteContainerClassName,
                            java.lang.String methodName)

Description copied from interface: ContainerMapping

PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target objects. The key used to index a value in the Map is the value returned by a call to the specified zero-argument method. The method must be implemented by the class (or a superclass) of any value to be inserted into the Map.

The container class must implement (directly or indirectly) the java.util.Map interface.

To facilitate resolving the method, the mapping's referenceClass must set before calling this method.

Specified by:

useMapClassName in interface ContainerMapping

setUsesSingleNode

public void setUsesSingleNode(boolean usesSingleNode)

PUBLIC: Sets whether the mapping uses a single node.

Parameters:

usesSingleNode - true if the items in the collection are in a single node or false if each of the items in the collection is in its own node

usesSingleNode

public boolean usesSingleNode()

PUBLIC: Checks whether the mapping uses a single node.

Returns:

True if the items in the collection are in a single node or false if each of the items in the collection is in its own node.

valueFromRow

public java.lang.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,
                                     java.lang.Boolean[] wasCacheUsed)
                              throws DatabaseException

INTERNAL: Build the nested collection from the database row.

Overrides:

valueFromRow in class DatabaseMapping

Throws:

DatabaseException

writeFromObjectIntoRow

public void writeFromObjectIntoRow(java.lang.Object object,
                                   org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                   org.eclipse.persistence.internal.sessions.AbstractSession session,
                                   DatabaseMapping.WriteType writeType)

INTERNAL: Get the attribute value from the object and store it in the appropriate field of the row.

Overrides:

writeFromObjectIntoRow in class DatabaseMapping

writeFromObjectIntoRowForUpdate

public void writeFromObjectIntoRowForUpdate(WriteObjectQuery writeQuery,
                                            org.eclipse.persistence.internal.sessions.AbstractRecord row)
                                     throws DescriptorException

INTERNAL: If any part of the nested collection has changed, the whole thing is written.

Overrides:

writeFromObjectIntoRowForUpdate in class DatabaseMapping

Throws:

DescriptorException

writeFromObjectIntoRowWithChangeRecord

public void writeFromObjectIntoRowWithChangeRecord(org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord,
                                                   org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                   DatabaseMapping.WriteType writeType)

INTERNAL: Get the appropriate attribute value from the object and put it in the appropriate field of the database row. Loop through the reference objects and extract the primary keys and put them in the vector of "nested" rows.

Overrides:

writeFromObjectIntoRowWithChangeRecord in class DatabaseMapping

writeInsertFieldsIntoRow

public void writeInsertFieldsIntoRow(org.eclipse.persistence.internal.sessions.AbstractRecord row,
                                     org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Write the fields needed for insert into the template with null values.

Overrides:

writeInsertFieldsIntoRow in class DatabaseMapping

getFieldClassification

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

INTERNAL: Return the classifiction for the field contained in the mapping. This is used to convert the row value to a consistent java value. By default this is unknown.

Overrides:

getFieldClassification in class DatabaseMapping

isCollectionMapping

public boolean isCollectionMapping()

Description copied from class: DatabaseMapping

INTERNAL: Related mapping should implement this method to return true.

Overrides:

isCollectionMapping in class DatabaseMapping

convertClassNamesToClasses

public void convertClassNamesToClasses(java.lang.ClassLoader classLoader)

Description copied from class: DatabaseMapping

INTERNAL: Convert all the class-name-based settings in this mapping to actual class-based settings This method is implemented by subclasses as necessary.

Overrides:

convertClassNamesToClasses in class DatabaseMapping

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 session)

INTERNAL: Build and return the change record that results from comparing the two direct collection attributes.

Specified by:

compareForChange in class DatabaseMapping

Returns:

prototype.changeset.ChangeRecord

compareObjects

public boolean compareObjects(java.lang.Object object1,
                              java.lang.Object object2,
                              org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Compare the attributes belonging to this mapping for the objects.

Specified by:

compareObjects in class DatabaseMapping

mergeChangesIntoObject

public void mergeChangesIntoObject(java.lang.Object target,
                                   org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord,
                                   java.lang.Object source,
                                   org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                                   org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Merge changes from the source to the target object.

Specified by:

mergeChangesIntoObject in class DatabaseMapping

mergeIntoObject

public void mergeIntoObject(java.lang.Object target,
                            boolean isTargetUnInitialized,
                            java.lang.Object source,
                            org.eclipse.persistence.internal.sessions.MergeManager mergeManager,
                            org.eclipse.persistence.internal.sessions.AbstractSession targetSession)

INTERNAL: Merge changes from the source to the target object. Simply replace the entire target collection.

Specified by:

mergeIntoObject in class DatabaseMapping

simpleAddToCollectionChangeRecord

public void simpleAddToCollectionChangeRecord(java.lang.Object referenceKey,
                                              java.lang.Object changeSetToAdd,
                                              org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet,
                                              org.eclipse.persistence.internal.sessions.AbstractSession session)

ADVANCED: This method is used to have an object add to a collection once the changeSet is applied The referenceKey parameter should only be used for direct Maps.

Overrides:

simpleAddToCollectionChangeRecord in class DatabaseMapping

simpleRemoveFromCollectionChangeRecord

public void simpleRemoveFromCollectionChangeRecord(java.lang.Object referenceKey,
                                                   java.lang.Object changeSetToRemove,
                                                   org.eclipse.persistence.internal.sessions.ObjectChangeSet changeSet,
                                                   org.eclipse.persistence.internal.sessions.AbstractSession session)

ADVANCED: This method is used to have an object removed from a collection once the changeSet is applied The referenceKey parameter should only be used for direct Maps.

Overrides:

simpleRemoveFromCollectionChangeRecord in class DatabaseMapping

createMapComponentFromRow

public java.lang.Object createMapComponentFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord dbRow,
                                                  ObjectBuildingQuery query,
                                                  org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey,
                                                  org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                  boolean isTargetProtected)

INTERNAL Called when a DatabaseMapping is used to map the key in a collection. Returns the key.