Hi,
As of now, xerces doesn't not provide the support for XPointer Framework
[http://www.w3.org/TR/xptr-framework/] and XPointer element()
[http://www.w3.org/TR/xptr-element/] schema which are required to be fully complaint
for XInclude. I am planning to provide the support
for XPointer into xerces-java. As per XInclude spec element() schema and
XPointerFramework needs to be supported. XPointerFramework
insist that any schema should be processed by the XPointer processor.
Proposed Design : XPointer support will be provided on top of the XInclude which is
designed by Peter,IBM.
XPointer processor will be initialized only if XInclude processor identifies the
pointer part in the URI to be included. If
XInclude processor recognizes the pointer part in URI then it will spawn a new
partial xpointer pipeline which will have xpointer
schema component to process the schema pointer. If sub-resource is not identified by
schema then Xpointer processor will re-open's the
inputsource for next schema in pointer part. XPointer Schema will be a XNI component
which implements the XPointerSchema interface.
Application developer can register his Xpointer schema into XPointer processor
with the help of property shown below
Property Name: http://xml.apache.org/xerces/xpointerschema.
Property Value: XPointerSchema [].
It may be possible that user wants to register multiple Xpointer
schema's into a XPointer Processor.
/**
* Application developer should extends XPointerSchema to define its own Xpointer
schema.
*
*/
public interface XPointerSchema extends XMLDocumentFilter{
/**
* This function return the Schema name which is used by the XPointer Processor
to identify schema object.
*
* @return The name of XPointerSchema Component.
*/
public String getXPointerSchemaName();
/**
* set the schema pointer for Schema to process.
*/
public void setSchemaPointer(String pointer);
/**
* return true if sub-resource is identified by the schema component.
*/
public boolean isSubResourceIdentified();
}
Your valuable comments and queries are welcome.
Thanks,
Arun.
Sun Microsystems, India.
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