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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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java.lang.Object
org.eclipse.persistence.mappings.DatabaseMapping
org.eclipse.persistence.mappings.AggregateMapping
org.eclipse.persistence.mappings.foundation.AbstractCompositeObjectMapping
org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping
public class XMLCompositeObjectMapping
Composite object XML mappings represent a relationship between two classes. In XML, the "owned" class may be nested with the element tag representing the "owning" class. This mapping is, by definition, privately owned.
Composite object XML mappings can be used in the following scenarios:
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 path and positional information; the last node in the XPath forms the local root node for the composite object. The XPath is specified on the mapping using the setXPath
method.
The following XPath statements may be used to specify the location of XML data relating to an object's name attribute:
XPath | Description |
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. | Indicates "self". |
phone-number | The phone-number information is stored in the phone-number element. |
contact-info/phone-number | The XPath statement may be used to specify any valid path. |
phone-number[2] | The XPath statement may contain positional information. In this case the phone-number information is stored in the second occurrence of the phone-number element. |
Mapping into the Parent Record: The composite object may be mapped into the parent record in a corresponding XML document.
XML Schema
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element />
<xsd:complexType >
<xsd:sequence>
<xsd:element />
<xsd:element />
<xsd:element />
<xsd:element />
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
Code Sample
XMLCompositeObjectMapping addressMapping = new XMLCompositeObjectMapping();
addressMapping.setAttributeName("address");
addressMapping.setXPath(".");
addressMapping.setReferenceClass(Address.class);
Mapping to an Element: The composite object may be mapped to an element in a corresponding XML document.
XML Schema
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element />
<xsd:complexType >
<xsd:sequence>
<xsd:element />
<xsd:element />
<xsd:element >
<xsd:complexType>
<xsd:sequence>
<xsd:element />
<xsd:element />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
Code Sample
XMLCompositeObjectMapping addressMapping = new XMLCompositeObjectMapping();
addressMapping.setAttributeName("address");
addressMapping.setXPath("address");
addressMapping.setReferenceClass(Address.class);
More Information: For more information about using the XML Composite Object Mapping, see the "Understanding XML Mappings" chapter of the Oracle TopLink Developer's Guide.
Nested Class Summary |
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Nested classes/interfaces inherited from class org.eclipse.persistence.mappings.DatabaseMapping |
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DatabaseMapping.WriteType |
Field Summary | |
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private XMLInverseReferenceMapping |
inverseReferenceMapping |
private boolean |
isWriteOnly |
private UnmarshalKeepAsElementPolicy |
keepAsElementPolicy |
(package private) AbstractNullPolicy |
nullPolicy |
Fields inherited from class org.eclipse.persistence.mappings.foundation.AbstractCompositeObjectMapping |
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converter, field |
Fields inherited from class org.eclipse.persistence.mappings.AggregateMapping |
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referenceClass, referenceClassName, referenceDescriptor |
Fields inherited from class org.eclipse.persistence.mappings.DatabaseMapping |
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attributeAccessor, attributeName, derivedIdMapping, derivesId, descriptor, fields, isCacheable, isJPAId, isLazy, isMapKeyMapping, isOptional, isPrimaryKeyMapping, isReadOnly, isRemotelyInitialized, mapsIdValue, NO_FIELDS, NO_WEIGHT, properties, weight, WEIGHT_AGGREGATE, WEIGHT_DIRECT, WEIGHT_TO_ONE, WEIGHT_TRANSFORM |
Constructor Summary | |
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XMLCompositeObjectMapping() |
Method Summary | |
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protected java.lang.Object |
buildCompositeObject(org.eclipse.persistence.internal.descriptors.ObjectBuilder objectBuilder, org.eclipse.persistence.internal.sessions.AbstractRecord nestedRow, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession) |
protected java.lang.Object |
buildCompositeRow(java.lang.Object attributeValue, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, DatabaseMapping.WriteType writeType) |
void |
configureNestedRow(org.eclipse.persistence.internal.sessions.AbstractRecord parent, org.eclipse.persistence.internal.sessions.AbstractRecord child) |
private java.lang.Object |
convertToSimpleTypeIfPresent(java.lang.Object toReturn, XMLRecord nestedRow, org.eclipse.persistence.internal.sessions.AbstractSession executionSession) |
AttributeAccessor |
getContainerAccessor() Deprecated. Replaced by getInverseReferenceMapping().getAttributeAccessor() |
java.lang.String |
getContainerAttributeName() Deprecated. Replaced by getInverseReferenceMapping().getAttributeName() |
java.lang.String |
getContainerGetMethodName() Deprecated. Replaced by getInverseReferenceMapping().getGetMethodName() |
java.lang.String |
getContainerSetMethodName() Deprecated. Replaced by getInverseReferenceMapping().getSetMethodName() |
protected XMLDescriptor |
getDescriptor(XMLRecord xmlRecord, org.eclipse.persistence.internal.sessions.AbstractSession session, javax.xml.namespace.QName rootQName) |
XMLInverseReferenceMapping |
getInverseReferenceMapping() |
UnmarshalKeepAsElementPolicy |
getKeepAsElementPolicy() |
AbstractNullPolicy |
getNullPolicy() INTERNAL: Get the AbstractNullPolicy from the Mapping. |
protected ClassDescriptor |
getReferenceDescriptor(java.lang.Class theClass, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: For inheritance purposes. |
ClassDescriptor |
getReferenceDescriptor(DOMRecord xmlRecord) |
java.lang.String |
getXPath() Get the XPath String |
void |
initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: The mapping is initialized with the given session. |
boolean |
isWriteOnly() INTERNAL: Some mappings support no attribute (transformation). |
boolean |
isXMLMapping() INTERNAL: |
void |
preInitialize(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Allow for initialization of properties and validation. |
java.lang.Object |
readFromRowIntoObject(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, java.lang.Object targetObject, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected) INTERNAL: Extract value from the row and set the attribute to this value in the object. |
void |
setAttributeValueInObject(java.lang.Object object, java.lang.Object value) INTERNAL: Set the value of the attribute mapped by this mapping. |
void |
setContainerAccessor(AttributeAccessor anAttributeAccessor) Deprecated. Replaced by getInverseReferenceMapping().setAttributeAccessor() |
void |
setContainerAttributeName(java.lang.String attributeName) Deprecated. Replaced by getInverseReferenceMapping().setAttributeName() |
void |
setContainerGetMethodName(java.lang.String methodName) Deprecated. Replaced by getInverseReferenceMapping().setGetMethodName() |
void |
setContainerSetMethodName(java.lang.String methodName) Deprecated. Replaced by getInverseReferenceMapping().setSetMethodName() |
(package private) void |
setInverseReferenceMapping(XMLInverseReferenceMapping inverseReferenceMapping) |
void |
setIsWriteOnly(boolean b) |
void |
setKeepAsElementPolicy(UnmarshalKeepAsElementPolicy keepAsElementPolicy) |
void |
setNullPolicy(AbstractNullPolicy aNullPolicy) Set the AbstractNullPolicy on the mapping The default policy is NullPolicy. |
void |
setXPath(java.lang.String xpathString) Set the Mapping field name attribute to the given XPath String |
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: Extract and return the aggregate object from the specified row. |
java.lang.Object |
valueFromRow(java.lang.Object fieldValue, XMLRecord nestedRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected) |
void |
writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType) INTERNAL: |
void |
writeSingleValue(java.lang.Object value, java.lang.Object parent, XMLRecord record, 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.foundation.AbstractCompositeObjectMapping |
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buildShallowOriginalFromRow, cascadeDiscoverAndPersistUnregisteredNewObjects, cascadePerformRemoveIfRequired, cascadeRegisterNewIfRequired, collectFields, convertClassNamesToClasses, getAttributeValueFromObject, getConverter, getField, hasConverter, isAbstractCompositeObjectMapping, setConverter, setField, valueFromObject, writeFromObjectIntoRowForUpdate, writeFromObjectIntoRowWithChangeRecord, writeInsertFieldsIntoRow |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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AbstractNullPolicy nullPolicy
private XMLInverseReferenceMapping inverseReferenceMapping
private UnmarshalKeepAsElementPolicy keepAsElementPolicy
private boolean isWriteOnly
Constructor Detail |
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public XMLCompositeObjectMapping()
Method Detail |
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@Deprecated
public AttributeAccessor getContainerAccessor()
@Deprecated
public void setContainerAccessor(AttributeAccessor anAttributeAccessor)
anAttributeAccessor
- - the accessor to be used.
@Deprecated
public void setContainerAttributeName(java.lang.String attributeName)
attributeName
- - the name of the backpointer attribute to be populated
@Deprecated
public java.lang.String getContainerAttributeName()
@Deprecated
public void setContainerGetMethodName(java.lang.String methodName)
methodName
- - the getter method to be used.
@Deprecated
public void setContainerSetMethodName(java.lang.String methodName)
methodName
- - the setter method to be used.
@Deprecated
public java.lang.String getContainerGetMethodName()
@Deprecated
public java.lang.String getContainerSetMethodName()
public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
initialize
in class AbstractCompositeObjectMapping
DescriptorException
public void setNullPolicy(AbstractNullPolicy aNullPolicy)
setNullPolicy
in interface XMLNillableMapping
aNullPolicy
-public AbstractNullPolicy getNullPolicy()
getNullPolicy
in interface XMLNillableMapping
public boolean isXMLMapping()
isXMLMapping
in class DatabaseMapping
public java.lang.String getXPath()
public void setXPath(java.lang.String xpathString)
xpathString
- Stringprotected java.lang.Object buildCompositeRow(java.lang.Object attributeValue, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, DatabaseMapping.WriteType writeType)
buildCompositeRow
in class AbstractCompositeObjectMapping
protected java.lang.Object buildCompositeObject(org.eclipse.persistence.internal.descriptors.ObjectBuilder objectBuilder, org.eclipse.persistence.internal.sessions.AbstractRecord nestedRow, ObjectBuildingQuery query, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, org.eclipse.persistence.internal.sessions.AbstractSession targetSession)
buildCompositeObject
in class AbstractCompositeObjectMapping
public java.lang.Object readFromRowIntoObject(org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, java.lang.Object targetObject, org.eclipse.persistence.internal.identitymaps.CacheKey parentCacheKey, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected) throws DatabaseException
DatabaseMapping
readFromRowIntoObject
in class DatabaseMapping
DatabaseException
public java.lang.Object valueFromRow(java.lang.Object fieldValue, XMLRecord nestedRow, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ObjectBuildingQuery sourceQuery, org.eclipse.persistence.internal.sessions.AbstractSession executionSession, boolean isTargetProtected) throws DatabaseException
DatabaseException
private java.lang.Object convertToSimpleTypeIfPresent(java.lang.Object toReturn, XMLRecord nestedRow, org.eclipse.persistence.internal.sessions.AbstractSession executionSession)
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
AbstractCompositeObjectMapping
valueFromRow
in class AbstractCompositeObjectMapping
DatabaseException
public void writeFromObjectIntoRow(java.lang.Object object, org.eclipse.persistence.internal.sessions.AbstractRecord databaseRow, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseMapping.WriteType writeType) throws DescriptorException
writeFromObjectIntoRow
in class AbstractCompositeObjectMapping
DescriptorException
public void writeSingleValue(java.lang.Object value, java.lang.Object parent, XMLRecord record, org.eclipse.persistence.internal.sessions.AbstractSession session)
XMLMapping
writeSingleValue
in interface XMLMapping
value
- - The value to be marshalledrecord
- - The Record the value is being marshalled too.public void configureNestedRow(org.eclipse.persistence.internal.sessions.AbstractRecord parent, org.eclipse.persistence.internal.sessions.AbstractRecord child)
public ClassDescriptor getReferenceDescriptor(DOMRecord xmlRecord)
protected ClassDescriptor getReferenceDescriptor(java.lang.Class theClass, org.eclipse.persistence.internal.sessions.AbstractSession session)
AggregateMapping
getReferenceDescriptor
in class AggregateMapping
public UnmarshalKeepAsElementPolicy getKeepAsElementPolicy()
public void setKeepAsElementPolicy(UnmarshalKeepAsElementPolicy keepAsElementPolicy)
protected XMLDescriptor getDescriptor(XMLRecord xmlRecord, org.eclipse.persistence.internal.sessions.AbstractSession session, javax.xml.namespace.QName rootQName) throws XMLMarshalException
XMLMarshalException
public void setIsWriteOnly(boolean b)
setIsWriteOnly
in interface XMLMapping
public boolean isWriteOnly()
DatabaseMapping
isWriteOnly
in interface XMLMapping
isWriteOnly
in class DatabaseMapping
public void preInitialize(org.eclipse.persistence.internal.sessions.AbstractSession session) throws DescriptorException
DatabaseMapping
preInitialize
in class DatabaseMapping
DescriptorException
public void setAttributeValueInObject(java.lang.Object object, java.lang.Object value) throws DescriptorException
AbstractCompositeObjectMapping
setAttributeValueInObject
in class AbstractCompositeObjectMapping
DescriptorException
public XMLInverseReferenceMapping getInverseReferenceMapping()
void setInverseReferenceMapping(XMLInverseReferenceMapping inverseReferenceMapping)
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