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Patrice Bonhomme writes:
> Ok, so how can i get the corresponding ENTITY value within a SAX
> application ? And i think that the example i gave was not good
> because the XML Rec says : "No External Entity References In
> Attribute Values".
>
> I said:
> ] <?xml version="1.0" ?> <!DOCTYPE foo [ <!ELEMENT foo (#PCDATA)>
> ] <!ATTLIST foo docref ENTITY #IMPLIED> <!ENTITY mydoc SYSTEM
> ] 'mydoc.xml'> ]> <foo docref="mydoc">blah</foo>
>
> If the Entity 'mydoc' was not an External entity (let's say a
> simple internal entity, <!ENTITY mydoc 'mydoc.xml'>) what should
> return the SAX driver ? 'mydoc' or 'mydoc.xml' ? Could i have
> something like this : <!ENTITY mydoc SYSTEM 'mydoc.xml' NDATA xml>
> ?
The last one is the only one that you're allowed to have -- ENTITY
attributes must contain the names of NDATA entities (no internal or
external text entities allowed).
SAX has a special handler called DTDHandler that will tell the
application about all declared NDATA entities and notations before
parsing the document element:
public interface DTDHandler
{
public void notationDecl (String name, String publicId,
String systemId);
public void unparsedEntityDecl (String name, String publicId,
String systemId, String notationName);
}
A common practice is to use these callbacks to build two hash tables
-- one for entities, and one for notations -- and then look up ENTITY
and NOTATION attributes in those tables when you are parsing within
the document element.
All the best,
David
--
David Megginson david@m...
http://www.megginson.com/
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