|
EclipseLink1.0 - 20080707 API Reference | ||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.eclipse.persistence.mappings.DatabaseMapping org.eclipse.persistence.oxm.mappings.XMLAnyObjectMapping
public class XMLAnyObjectMapping
Any object XML mappings map an attribute that contains a single object to an XML element. The referenced object may be of any type (including String), and does not need not be related to any other particular type through inheritance or a common interface. The corresponding object attribute value 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 object XML mappings are useful with the following XML schema constructs:
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 Object 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-method | The name information is stored in the contact-method element. |
contact-method/info | The XPath statement may be used to specify any valid path. |
contact-method[2] | The XPath statement may contain positional information. In this case the contact information is stored in the second occurrence of the contact-method element. |
Mapping an element of type xs:anyType as an Any Object 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-method" 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
XMLAnyObjectMapping contactMethodMapping = new XMLAnyObjectMapping();
contactMethodMapping.setAttributeName("contactMethod");
contactMethodMapping.setXPath("contact-method");
More Information: For more information about using the XML Any Object Mapping, see the "Understanding XML Mappings" chapter of the Oracle TopLink Developer's Guide.
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 | |
---|---|
XMLAnyObjectMapping()
|
Method Summary | |
---|---|
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. |
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)
|
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 |
java.lang.Object |
clone()
INTERNAL: Clones itself. |
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 |
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. |
XMLConverter |
getConverter()
|
protected XMLDescriptor |
getDescriptor(XMLRecord xmlRecord,
org.eclipse.persistence.internal.sessions.AbstractSession session,
javax.xml.namespace.QName rootQName)
|
org.eclipse.persistence.internal.helper.DatabaseField |
getField()
INTERNAL: Return the field associated with this mapping if there is exactly one. |
java.util.Vector |
getFields()
INTERNAL: Returns a vector of all the fields this mapping represents. |
org.w3c.dom.Node |
getNodeToReplace(org.w3c.dom.Node parent)
|
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 |
setConverter(XMLConverter converter)
|
void |
setField(org.eclipse.persistence.internal.helper.DatabaseField field)
|
void |
setUseXMLRoot(boolean useXMLRoot)
|
void |
setXPath(java.lang.String xpath)
|
boolean |
shouldAddXsiType(XMLMarshaller xmlMarshaller,
XMLDescriptor xmlDescriptor,
java.lang.Object originalObject,
boolean wasXMLRoot)
INTERNAL: |
boolean |
usesXMLRoot()
|
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 java.lang.Object |
---|
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
public XMLAnyObjectMapping()
Method Detail |
---|
public void buildBackupClone(java.lang.Object clone, java.lang.Object backup, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
buildBackupClone
in class DatabaseMapping
public void buildClone(java.lang.Object original, java.lang.Object clone, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork)
buildClone
in class DatabaseMapping
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)
DatabaseMapping
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.
buildCloneFromRow
in class DatabaseMapping
public void cascadePerformRemoveIfRequired(java.lang.Object object, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow, java.util.Map visitedObjects)
cascadePerformRemoveIfRequired
in class DatabaseMapping
public void cascadeRegisterNewIfRequired(java.lang.Object object, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow, java.util.Map visitedObjects)
cascadeRegisterNewIfRequired
in class DatabaseMapping
public java.lang.Object clone()
DatabaseMapping
clone
in class DatabaseMapping
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)
compareForChange
in class DatabaseMapping
public boolean compareObjects(java.lang.Object firstObject, java.lang.Object secondObject, org.eclipse.persistence.internal.sessions.AbstractSession session)
compareObjects
in class DatabaseMapping
public void fixObjectReferences(java.lang.Object object, java.util.Map objectDescriptors, java.util.Map processedObjects, ObjectLevelReadQuery query, RemoteSession session)
fixObjectReferences
in class DatabaseMapping
public org.eclipse.persistence.internal.helper.DatabaseField getField()
DatabaseMapping
getField
in class DatabaseMapping
public void iterate(org.eclipse.persistence.internal.descriptors.DescriptorIterator iterator)
iterate
in class DatabaseMapping
public void setXPath(java.lang.String xpath)
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)
mergeChangesIntoObject
in class DatabaseMapping
public void mergeIntoObject(java.lang.Object target, boolean isTargetUninitialized, java.lang.Object source, org.eclipse.persistence.internal.sessions.MergeManager mergeManager)
mergeIntoObject
in class DatabaseMapping
public void setField(org.eclipse.persistence.internal.helper.DatabaseField field)
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
DatabaseMapping
valueFromRow
in class DatabaseMapping
DatabaseException
protected XMLDescriptor getDescriptor(XMLRecord xmlRecord, org.eclipse.persistence.internal.sessions.AbstractSession session, javax.xml.namespace.QName rootQName) throws XMLMarshalException
XMLMarshalException
public void writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
DatabaseMapping
writeFromObjectIntoRow
in class DatabaseMapping
DescriptorException
public void writeSingleValue(java.lang.Object value, java.lang.Object parent, XMLRecord row, org.eclipse.persistence.internal.sessions.AbstractSession session)
XMLMapping
writeSingleValue
in interface XMLMapping
value
- - The value to be marshalledrow
- - The Record the value is being marshalled too.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)
public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
DatabaseMapping
initialize
in class DatabaseMapping
DescriptorException
public boolean isXMLMapping()
DatabaseMapping
isXMLMapping
in class DatabaseMapping
public java.util.Vector getFields()
DatabaseMapping
getFields
in class DatabaseMapping
public void setUseXMLRoot(boolean useXMLRoot)
public boolean usesXMLRoot()
public boolean shouldAddXsiType(XMLMarshaller xmlMarshaller, XMLDescriptor xmlDescriptor, java.lang.Object originalObject, boolean wasXMLRoot)
public org.w3c.dom.Node getNodeToReplace(org.w3c.dom.Node parent)
public XMLConverter getConverter()
public void setConverter(XMLConverter converter)
|
EclipseLink1.0 - 20080707 API Reference | ||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |