Class IdRefMapperBase
- All Implemented Interfaces:
IAliasable
,IMarshaller
,IUnmarshaller
Abstract base custom marshaller/unmarshaller for an object reference. This
marshals the reference as an empty element with a single IDREF attribute, and
unmarshals an element with the same structure to create a reference to the
object with that ID value. To use this class you need to create a subclass
with a constructor using the same signature as the one provided (calling the
base class constructor from your subclass constructor) and implement the
abstract getIdValue(java.lang.Object)
method in your subclass. You can also override
the provided getAttributeName()
method to change the name used for the
IDREF attribute. Note that this class can only be used when the definitions
precede the references in the XML document; if a referenced ID is not defined
the unmarshaller throws an exception.
- Author:
- Dennis M. Sosnoski
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionIdRefMapperBase
(String uri, int index, String name) Aliased constructor taking a name definition for the element. -
Method Summary
Modifier and TypeMethodDescriptionprotected String
Method which can be overridden to supply a different name for the ID reference attribute.protected abstract String
getIdValue
(Object item) Get the ID value from object being marshalled.boolean
isExtension
(String mapname) Check if marshaller represents an extension mapping.boolean
Check if instance present in XML.void
marshal
(Object obj, IMarshallingContext ictx) Marshal instance of handled class.unmarshal
(Object obj, IUnmarshallingContext ictx) Unmarshal instance of handled class.
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Field Details
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m_uri
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m_index
private int m_index -
m_name
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Constructor Details
-
IdRefMapperBase
Aliased constructor taking a name definition for the element. The subclass version will be used by JiBX to define the element name to be used with this custom marshaller/unmarshaller.- Parameters:
uri
- namespace URI for the top-level elementindex
- namespace index corresponding to the defined URI within the marshalling context definitionsname
- local name for the top-level element
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Method Details
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getIdValue
Get the ID value from object being marshalled.- Returns:
- ID value
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getAttributeName
Method which can be overridden to supply a different name for the ID reference attribute. The attribute name used by default is just "ref". -
isExtension
Description copied from interface:IMarshaller
Check if marshaller represents an extension mapping. This is used by the framework in generated code to verify compatibility of objects being marshalled using an abstract mapping.- Specified by:
isExtension
in interfaceIMarshaller
- Parameters:
mapname
- marshaller mapping name (generally the class name to be handled, or abstract mapping type name)- Returns:
true
if this mapping is an extension of the abstract mapping,false
if not
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marshal
Description copied from interface:IMarshaller
Marshal instance of handled class. This method call is responsible for all handling of the marshalling of an object to XML text. It is called at the point where the start tag for the associated element should be generated.- Specified by:
marshal
in interfaceIMarshaller
- Parameters:
obj
- object to be marshalled (may benull
if property is not optional)ictx
- XML text output context- Throws:
JiBXException
- on error in marshalling process
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isPresent
Description copied from interface:IUnmarshaller
Check if instance present in XML. This method can be called when the unmarshalling context is positioned at or just before the start of the data corresponding to an instance of this mapping. It verifies that the expected data is present.- Specified by:
isPresent
in interfaceIUnmarshaller
- Parameters:
ctx
- unmarshalling context- Returns:
true
if expected parse data found,false
if not- Throws:
JiBXException
- on error in unmarshalling process
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unmarshal
Description copied from interface:IUnmarshaller
Unmarshal instance of handled class. This method call is responsible for all handling of the unmarshalling of an object from XML text, including creating the instance of the handled class if an instance is not supplied. When it is called the unmarshalling context is always positioned at or just before the start tag corresponding to the start of the class data.- Specified by:
unmarshal
in interfaceIUnmarshaller
- Parameters:
obj
- object to be unmarshalled (may benull
)ictx
- unmarshalling context- Returns:
- unmarshalled object (may be
null
) - Throws:
JiBXException
- on error in unmarshalling process
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