Package org.eclipse.persistence.oxm.mappings

Class XMLAnyCollectionMapping

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, org.eclipse.persistence.internal.oxm.mappings.AnyCollectionMapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​XMLConverter,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLMarshaller,​Session,​UnmarshalKeepAsElementPolicy,​XMLUnmarshaller,​XMLRecord>, org.eclipse.persistence.internal.oxm.mappings.Mapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLRecord>, org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping, org.eclipse.persistence.internal.oxm.mappings.XMLConverterMapping<XMLMarshaller,​Session,​XMLUnmarshaller>, ContainerMapping, XMLMapping
    public class XMLAnyCollectionMapping
extends XMLAbstractAnyMapping
implements org.eclipse.persistence.internal.oxm.mappings.AnyCollectionMapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​XMLConverter,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLMarshaller,​Session,​UnmarshalKeepAsElementPolicy,​XMLUnmarshaller,​XMLRecord>, XMLMapping, ContainerMapping

    Any collection XML mappings map an attribute that contains a heterogenous collection of objects to multiple XML elements. Unlike composite collection XML mappings, the referenced objects may be of different types (including String), and do not need to be related to each other through inheritance or a common interface. The corresponding object attribute should be generic enough for all possible application values. Note that each of the referenced objects (except String) must specify a default root element on their descriptor.

    Any collection mappings are useful with the following XML schema constructs:

    • any
    • choice
    • substitution groups

    Setting the XPath: TopLink XML mappings make use of XPath statements to find the relevant data in an XML document. The XPath statement is relative to the context node specified in the descriptor. The XPath may contain node type, path, and positional information. The XPath is specified on the mapping using the setXPath method. Note that for XML Any Collection Mappings the XPath is optional.

    The following XPath statements may be used to specify the location of XML data relating to an object's name attribute:

    XPath Description
    contact-methods The name information is stored in the contact-methods element.
    contact-methods/info The XPath statement may be used to specify any valid path.
    contact-methods[2] The XPath statement may contain positional information. In this case the contact information is stored in the second occurrence of the contact-methods element.

    Mapping an element of type xs:anyType as an Any Collection Mapping:

    XML Schema
    <?xml version="1.0" encoding="UTF-8"?>
    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <xsd:element name="customer" type="customer-type"/>
      <xsd:complexType name="customer-type">
        <xsd:sequence>
          <xsd:element name="contact-methods" type="xsd:anyType"/>
        </xsd:sequence>
      </xsd:complexType>
      <xsd:element name="address">
        <xsd:complexType>
          <xsd:sequence>
            <xsd:element name="street" type="xsd:string"/>
            <xsd:element name="city" type="xsd:string"/>
          </xsd:sequence>
        </xsd:complexType>
      </xsd:element>
      <xsd:element name="phone-number" type="xsd:string"/>
    </xsd:schema>

    Code Sample
    XMLAnyCollectionMapping contactMethodsMapping = new XMLAnyCollectionMapping();
    contactMethodsMapping.setAttributeName("contactMethods");
    contactMethodsMapping.setXPath("contact-methods");

    More Information: For more information about using the XML Any Collection Mapping, see the "Understanding XML Mappings" chapter of the Oracle TopLink Developer's Guide.

    See Also:
    Serialized Form
    Since:
    Oracle TopLink 10g Release 2 (10.1.3)

    • Constructor Detail

      • XMLAnyCollectionMapping

        public XMLAnyCollectionMapping()

    • 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,
                       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 databaseRow,
                              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)
        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,
                                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

      • getContainerPolicy

        public org.eclipse.persistence.internal.queries.ContainerPolicy getContainerPolicy()
        INTERNAL: Return the mapping's containerPolicy.
        Specified by:
        getContainerPolicy in interface ContainerMapping
        Specified by:
        getContainerPolicy in interface org.eclipse.persistence.internal.oxm.mappings.Mapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLRecord>
        Overrides:
        getContainerPolicy in class DatabaseMapping

      • getField

        public org.eclipse.persistence.internal.helper.DatabaseField getField()
        Description copied from class: DatabaseMapping
        INTERNAL: Return the field associated with this mapping if there is exactly one. This is required for object relational mapping to print them, but because they are defined in in an Enterprise context they cannot be cast to. Mappings that have a field include direct mappings and object relational mappings.
        Specified by:
        getField in interface org.eclipse.persistence.internal.oxm.mappings.Mapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLRecord>
        Overrides:
        getField 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

      • setXPath

        public void setXPath​(java.lang.String xpath)

      • 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.
        Specified by:
        mergeIntoObject in class DatabaseMapping

      • setContainerPolicy

        public void setContainerPolicy​(org.eclipse.persistence.internal.queries.ContainerPolicy cp)
        Description copied from interface: ContainerMapping
        PUBLIC: Set the mapping's container policy.
        Specified by:
        setContainerPolicy in interface ContainerMapping

      • 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
        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

      • writeSingleValue

        public void writeSingleValue​(java.lang.Object element,
                             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 org.eclipse.persistence.internal.oxm.mappings.Mapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLRecord>
        Specified by:
        writeSingleValue in interface XMLMapping
        Parameters:
        element - - The value to be marshalled
        row - - The Record the value is being marshalled too.

      • buildCompositeRow

        protected org.eclipse.persistence.internal.sessions.AbstractRecord buildCompositeRow​(java.lang.Object attributeValue,
                                                                                     org.eclipse.persistence.internal.sessions.AbstractSession session,
                                                                                     XMLDescriptor referenceDescriptor,
                                                                                     org.eclipse.persistence.internal.sessions.AbstractRecord parentRow,
                                                                                     org.eclipse.persistence.internal.helper.DatabaseField field,
                                                                                     java.lang.Object originalObject,
                                                                                     boolean wasXMLRoot)

      • 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 getFields()
        Description copied from class: DatabaseMapping
        INTERNAL: Returns a vector of all the fields this mapping represents.
        Overrides:
        getFields in class DatabaseMapping

      • useCollectionClass

        public void useCollectionClass​(java.lang.Class concreteContainerClass)
        PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target 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 org.eclipse.persistence.internal.oxm.mappings.AnyCollectionMapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​XMLConverter,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLMarshaller,​Session,​UnmarshalKeepAsElementPolicy,​XMLUnmarshaller,​XMLRecord>
        Specified by:
        useCollectionClass in interface ContainerMapping

      • useMapClass

        public void useMapClass​(java.lang.Class concreteContainerClass,
                        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:
        useMapClass in interface ContainerMapping

      • useMapClassName

        public void useMapClassName​(java.lang.String concreteContainerClass,
                            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

      • useCollectionClassName

        public void useCollectionClassName​(java.lang.String concreteContainerClassName)
        Description copied from interface: ContainerMapping
        PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target objects.

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

        Specified by:
        useCollectionClassName in interface ContainerMapping

      • useListClassName

        public void useListClassName​(java.lang.String concreteContainerClassName)
        Description copied from interface: ContainerMapping
        PUBLIC: Configure the mapping to use an instance of the specified container class to hold the target objects.

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

        Specified by:
        useListClassName in interface ContainerMapping

      • isCollectionMapping

        public boolean isCollectionMapping()
        Description copied from class: DatabaseMapping
        INTERNAL: Related mapping should implement this method to return true.
        Specified by:
        isCollectionMapping in interface org.eclipse.persistence.internal.oxm.mappings.Mapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLRecord>
        Overrides:
        isCollectionMapping in class DatabaseMapping

      • isWhitespacePreservedForMixedContent

        public boolean isWhitespacePreservedForMixedContent()
        Setting this to true indicates that text nodes containing *only* whitespaces should still be added to the collection as strings for mixed content. If mixedContent is false, this setting has no effect.
        Specified by:
        isWhitespacePreservedForMixedContent in interface org.eclipse.persistence.internal.oxm.mappings.AnyCollectionMapping<org.eclipse.persistence.internal.sessions.AbstractSession,​AttributeAccessor,​org.eclipse.persistence.internal.queries.ContainerPolicy,​XMLConverter,​ClassDescriptor,​org.eclipse.persistence.internal.helper.DatabaseField,​XMLMarshaller,​Session,​UnmarshalKeepAsElementPolicy,​XMLUnmarshaller,​XMLRecord>
        Returns:

      • getReuseContainer

        public boolean getReuseContainer()
        Return true if the original container on the object should be used if present. If it is not present then the container policy will be used to create the container.
        Specified by:
        getReuseContainer in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping

      • setReuseContainer

        public void setReuseContainer​(boolean reuseContainer)
        Specify whether the original container on the object should be used if present. If it is not present then the container policy will be used to create the container.
        Specified by:
        setReuseContainer in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping

      • isDefaultEmptyContainer

        public boolean isDefaultEmptyContainer()
        INTERNAL Return true if an empty container should be set on the object if there is no presence of the collection in the XML document.
        Specified by:
        isDefaultEmptyContainer in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping
        Since:
        EclipseLink 2.3.3

      • setDefaultEmptyContainer

        public void setDefaultEmptyContainer​(boolean defaultEmptyContainer)
        INTERNAL Indicate whether by default an empty container should be set on the field/property if the collection is not present in the XML document.
        Specified by:
        setDefaultEmptyContainer in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping
        Since:
        EclipseLink 2.3.3

      • getWrapperNullPolicy

        public AbstractNullPolicy getWrapperNullPolicy()
        Specified by:
        getWrapperNullPolicy in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping

      • setWrapperNullPolicy

        public void setWrapperNullPolicy​(AbstractNullPolicy policy)
        Specified by:
        setWrapperNullPolicy in interface org.eclipse.persistence.internal.oxm.mappings.XMLContainerMapping

      • convertObjectValueToDataValue

        public java.lang.Object convertObjectValueToDataValue​(java.lang.Object value,
                                                      Session session,
                                                      XMLMarshaller marshaller)
        INTERNAL
        Specified by:
        convertObjectValueToDataValue in interface org.eclipse.persistence.internal.oxm.mappings.XMLConverterMapping<XMLMarshaller,​Session,​XMLUnmarshaller>
        Since:
        EclipseLink 2.5.0

      • convertDataValueToObjectValue

        public java.lang.Object convertDataValueToObjectValue​(java.lang.Object fieldValue,
                                                      Session session,
                                                      XMLUnmarshaller unmarshaller)
        INTERNAL
        Specified by:
        convertDataValueToObjectValue in interface org.eclipse.persistence.internal.oxm.mappings.XMLConverterMapping<XMLMarshaller,​Session,​XMLUnmarshaller>
        Since:
        EclipseLink 2.5.0