EclipseLink1.0 - 20080707 API Reference

org.eclipse.persistence.oxm.mappings
Class XMLChoiceCollectionMapping

java.lang.Object
  extended by org.eclipse.persistence.mappings.DatabaseMapping
      extended by org.eclipse.persistence.oxm.mappings.XMLChoiceCollectionMapping
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, XMLMapping

public class XMLChoiceCollectionMapping
extends DatabaseMapping
implements XMLMapping

PUBLIC:

Purpose:Provide a mapping that can map a single attribute to a number of different elements in an XML Document. This will be used to map to Choices or Substitution Groups in an XML Schema

Responsibilities:

The XMLChoiceCollectionMapping is the collection version of the XMLChoiceMapping. This mapping allows the user to specify a number of different xpaths, and types associated with those xpaths. When any of these elements are encountered in the XML Document, they are read in as the correct type and added to the collection.

Setting up XPath mappings:Unlike other OXM Mappings, instead of setting a single xpath, the addChoiceElement method is used to specify an xpath and the type associated with this xpath.
xmlChoiceCollectionMapping.addChoiceElement("mystring/text()", String.class);
xmlChoiceCollectionMapping.addChoiceElement("myaddress", Address.class);

See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.eclipse.persistence.mappings.DatabaseMapping
attributeAccessor, attributeName, descriptor, fields, isLazy, isOptional, isReadOnly, isRemotelyInitialized, NO_FIELDS, NO_WEIGHT, primaryKeyMapping, properties, weight, WEIGHT_1
 
Constructor Summary
XMLChoiceCollectionMapping()
           
 
Method Summary
 void addChoiceElement(java.lang.String xpath, java.lang.Class elementType)
           
 void addChoiceElement(java.lang.String xpath, java.lang.String elementTypeName)
           
 void addChoiceElement(XMLField xmlField, java.lang.Class elementType)
           
 void addChoiceElement(XMLField field, java.lang.String elementTypeName)
           
 void addConverter(XMLField field, Converter converter)
           
 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.
 void buildClone(java.lang.Object original, java.lang.Object clone, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
          INTERNAL: Clone the attribute from the original and assign it to the clone.
 void buildCloneFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, java.lang.Object clone, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
          INTERNAL: A combination of readFromRowIntoObject and buildClone.
 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<org.eclipse.persistence.internal.helper.DatabaseField> collectFields()
          This method must be overwritten in the subclasses to return a vector of all the fields this mapping represents.
 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: This method was created in VisualAge.
 boolean compareObjects(java.lang.Object firstObject, java.lang.Object secondObject, 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.
 void fixObjectReferences(java.lang.Object object, java.util.Map objectDescriptors, java.util.Map processedObjects, ObjectLevelReadQuery query, RemoteSession session)
          INTERNAL: An object has been serialized from the server to the client.
 java.util.Map<XMLField,XMLMapping> getChoiceElementMappings()
           
 java.util.ArrayList getChoiceFieldToClassAssociations()
           
 java.util.Map<java.lang.Class,XMLField> getClassToFieldMappings()
           
 org.eclipse.persistence.internal.queries.ContainerPolicy getContainerPolicy()
          INTERNAL: Return the mapping's containerPolicy.
 java.util.Vector<org.eclipse.persistence.internal.helper.DatabaseField> getFields()
          INTERNAL: Returns a vector of all the fields this mapping represents.
 java.util.Map<XMLField,java.lang.Class> getFieldToClassMappings()
           
 void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: Allow for initialization of properties and validation.
 boolean isXMLMapping()
          INTERNAL: All relational mappings should implement this method to return true.
 void iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator)
          INTERNAL: Iterate on the appropriate attribute value.
 void mergeChangesIntoObject(java.lang.Object target, org.eclipse.persistence.internal.sessions.ChangeRecord changeRecord, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
          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)
          INTERNAL: Merge changes from the source to the target object.
 void setChoiceFieldToClassAssociations(java.util.ArrayList associations)
           
 void setContainerPolicy(org.eclipse.persistence.internal.queries.ContainerPolicy cp)
           
 void useCollectionClass(java.lang.Class concreteContainerClass)
           
 void useCollectionClassName(java.lang.String concreteContainerClassName)
           
 java.lang.Object valueFromRow(org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
          INTERNAL: A subclass should implement this method if it wants different behavior.
 void writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: A subclass should implement this method if it wants different behavior.
 void writeSingleValue(java.lang.Object value, java.lang.Object parent, XMLRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session)
          INTERNAL: A method that marshals a single value to the provided Record based on this mapping's XPath.
 
Methods inherited from class org.eclipse.persistence.mappings.DatabaseMapping
addToCollectionChangeRecord, buildBackupCloneForPartObject, buildChangeRecord, buildCloneForPartObject, buildCopy, buildExpression, buildObjectJoinExpression, buildObjectJoinExpression, buildShallowOriginalFromRow, calculateDeferredChanges, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadeMerge, clone, cloneFields, createUnitOfWorkValueHolder, extractNestedExpressions, fixRealObjectReferences, getAttributeAccessor, getAttributeClassification, getAttributeName, getAttributeValueFromObject, getDescriptor, getField, getFieldClassification, getGetMethodName, getObjectCorrespondingTo, getProperties, getProperty, getRealAttributeValueFromObject, getRealCollectionAttributeValueFromObject, getReferenceDescriptor, getRelationshipPartner, getSelectFields, getSelectTables, getSetMethodName, getValueFromRemoteValueHolder, getWeight, hasConstraintDependency, hasDependency, hasInverseConstraintDependency, hasRootExpressionThatShouldUseOuterJoin, instantiateAttribute, isAbstractCompositeCollectionMapping, isAbstractCompositeDirectCollectionMapping, isAbstractCompositeObjectMapping, isAbstractDirectMapping, isAggregateCollectionMapping, isAggregateMapping, isAggregateObjectMapping, isCascadedLockingSupported, isChangeTrackingSupported, isCloningRequired, isCollectionMapping, isDatabaseMapping, isDirectCollectionMapping, isDirectMapMapping, isDirectToFieldMapping, isDirectToXMLTypeMapping, isEISMapping, isForeignReferenceMapping, isJoiningSupported, isLazy, isManyToManyMapping, isNestedTableMapping, isObjectReferenceMapping, isOneToManyMapping, isOneToOneMapping, isOptional, isPrimaryKeyMapping, isPrivateOwned, isReadOnly, isReferenceMapping, isRelationalMapping, isRemotelyInitialized, isStructureMapping, isTransformationMapping, isUsingMethodAccess, isVariableOneToOneMapping, isWriteOnly, iterateOnRealAttributeValue, performDataModificationEvent, postDelete, postInitialize, postInsert, postUpdate, preDelete, preInitialize, preInsert, prepareCascadeLockingPolicy, preUpdate, readFromResultSetIntoObject, readFromRowIntoObject, readFromRowIntoObject, readOnly, readWrite, rehashFieldDependancies, remoteInitialization, remotelyInitialized, removeFromCollectionChangeRecord, replaceValueHoldersIn, setAttributeAccessor, setAttributeName, setAttributeValueInObject, setChangeListener, setDescriptor, setFields, setGetMethodName, setIsLazy, setIsOptional, setIsPrimaryKeyMapping, setIsReadOnly, setProperties, setProperty, setRealAttributeValueInObject, setSetMethodName, setWeight, simpleAddToCollectionChangeRecord, simpleRemoveFromCollectionChangeRecord, toString, updateChangeRecord, validateAfterInitialization, validateBeforeInitialization, valueFromObject, valueFromResultSet, valueFromRow, verifyDelete, writeFromAttributeIntoRow, writeFromObjectIntoRowForShallowInsert, writeFromObjectIntoRowForShallowInsertWithChangeRecord, writeFromObjectIntoRowForUpdate, writeFromObjectIntoRowForWhereClause, writeFromObjectIntoRowWithChangeRecord, writeInsertFieldsIntoRow, writeUpdateFieldsIntoRow
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

XMLChoiceCollectionMapping

public XMLChoiceCollectionMapping()
Method Detail

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.

Specified by:
buildBackupClone in class DatabaseMapping

buildClone

public void buildClone(java.lang.Object original,
                       java.lang.Object clone,
                       org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
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,
                              java.lang.Object clone,
                              ObjectBuildingQuery sourceQuery,
                              org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork,
                              org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
Description copied from class: DatabaseMapping
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

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

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: This method was created in VisualAge.

Specified by:
compareForChange in class DatabaseMapping
Returns:
prototype.changeset.ChangeRecord

compareObjects

public boolean compareObjects(java.lang.Object firstObject,
                              java.lang.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

fixObjectReferences

public void fixObjectReferences(java.lang.Object object,
                                java.util.Map objectDescriptors,
                                java.util.Map processedObjects,
                                ObjectLevelReadQuery query,
                                RemoteSession 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

iterate

public void iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator)
INTERNAL: Iterate on the appropriate attribute value.

Specified by:
iterate 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)
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)
INTERNAL: Merge changes from the source to the target object.

Specified by:
mergeIntoObject in class DatabaseMapping

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.sessions.AbstractSession executionSession)
                              throws DatabaseException
Description copied from class: DatabaseMapping
INTERNAL: A subclass should implement this method if it wants different behavior. Returns the value for the mapping from the database row. The execution session is the session the query was executed on, and its platform should be used for data conversion.

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)
                            throws DescriptorException
Description copied from class: DatabaseMapping
INTERNAL: A subclass should implement this method if it wants different behavior. Write the attribute value from the object to the row.

Overrides:
writeFromObjectIntoRow in class DatabaseMapping
Throws:
DescriptorException

writeSingleValue

public void writeSingleValue(java.lang.Object value,
                             java.lang.Object parent,
                             XMLRecord row,
                             org.eclipse.persistence.internal.sessions.AbstractSession session)
Description copied from interface: XMLMapping
INTERNAL: A method that marshals a single value to the provided Record based on this mapping's XPath. Used for Sequenced marshalling.

Specified by:
writeSingleValue in interface XMLMapping
Parameters:
value - - The value to be marshalled
row - - The Record the value is being marshalled too.

isXMLMapping

public boolean isXMLMapping()
Description copied from class: DatabaseMapping
INTERNAL: All relational mappings should implement this method to return true.

Overrides:
isXMLMapping in class DatabaseMapping

getFields

public java.util.Vector<org.eclipse.persistence.internal.helper.DatabaseField> getFields()
Description copied from class: DatabaseMapping
INTERNAL: Returns a vector of all the fields this mapping represents.

Overrides:
getFields in class DatabaseMapping

collectFields

protected java.util.Vector<org.eclipse.persistence.internal.helper.DatabaseField> collectFields()
Description copied from class: DatabaseMapping
This method must be overwritten in the subclasses to return a vector of all the fields this mapping represents.

Overrides:
collectFields in class DatabaseMapping

addChoiceElement

public void addChoiceElement(java.lang.String xpath,
                             java.lang.Class elementType)

addChoiceElement

public void addChoiceElement(java.lang.String xpath,
                             java.lang.String elementTypeName)

addChoiceElement

public void addChoiceElement(XMLField xmlField,
                             java.lang.Class elementType)

addChoiceElement

public void addChoiceElement(XMLField field,
                             java.lang.String elementTypeName)

getFieldToClassMappings

public java.util.Map<XMLField,java.lang.Class> getFieldToClassMappings()

initialize

public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
                throws DescriptorException
Description copied from class: DatabaseMapping
INTERNAL: Allow for initialization of properties and validation.

Overrides:
initialize in class DatabaseMapping
Throws:
DescriptorException

getClassToFieldMappings

public java.util.Map<java.lang.Class,XMLField> getClassToFieldMappings()

getChoiceElementMappings

public java.util.Map<XMLField,XMLMapping> getChoiceElementMappings()

getContainerPolicy

public org.eclipse.persistence.internal.queries.ContainerPolicy getContainerPolicy()
Description copied from class: DatabaseMapping
INTERNAL: Return the mapping's containerPolicy.

Overrides:
getContainerPolicy in class DatabaseMapping

setContainerPolicy

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

useCollectionClass

public void useCollectionClass(java.lang.Class concreteContainerClass)

useCollectionClassName

public void useCollectionClassName(java.lang.String concreteContainerClassName)

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

addConverter

public void addConverter(XMLField field,
                         Converter converter)

getChoiceFieldToClassAssociations

public java.util.ArrayList getChoiceFieldToClassAssociations()

setChoiceFieldToClassAssociations

public void setChoiceFieldToClassAssociations(java.util.ArrayList associations)

EclipseLink1.0 - 20080707 API Reference