I wasn't aware there was any support for DOM revalidation against DTDs
until today, but it seems it quietly slipped into the 2.7 release. Just
glancing over the code it looks pretty broken and I'm not able to get it
to do anything besides report spurious errors. I'll probably take a deeper
look at this over the weekend.
Thanks.
Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: [EMAIL PROTECTED]
E-mail: [EMAIL PROTECTED]
Dick Deneer <[EMAIL PROTECTED]> wrote on 11/22/2005
03:31:10 PM:
> I am using the DOM level 3 api to build a Dom from an instance XML
> file without a DocType (DTD). After I have built the Dom I want to
> revalidate it against an external DTD choosen by the user.
> But no validation takes place.
> On the other hand: If the xml has a reference to an external DTD, this
> DTD will be used, no matter what the user assigns as the new DTD.
> And If the XML instance had an internal DocType subset, this will be
> used, discarding the assigned DTD.
>
> I want the choosen DTD's to be used in the validation. Ok, I could use
> a entity resolver or catalog, but I think it should work in this simple
> way. In fact, if i am working with xsd files, all works like expected.
> Has some one an idea how to solve this?
>
>
> Here is my code.
> First parse the xml without validation into Dom:
>
> System.setProperty(
> DOMImplementationRegistry.PROPERTY,
> "org.apache.xerces.dom.DOMImplementationSourceImpl");
> DOMImplementationRegistry registry =
> DOMImplementationRegistry.newInstance();
>
> DOMImplementationLS impl =
> (DOMImplementationLS) registry.getDOMImplementation("LS");
> System.out.println("impl " + impl);
>
> LSParser parser =
> impl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS,
null);
> config.setParameter("datatype-normalization", Boolean.FALSE);
> config.setParameter("error-handler", this);
> config.setParameter("validate", Boolean.FALSE);
> config.setParameter("validate-if-schema", Boolean.FALSE);
> config.setParameter("psvi", Boolean.TRUE);
>
> Exception throwable = null;
> Document document = null;
>
> try
> {
> document = parser.parse(input);
> }
> catch (Exception e)
> {
> throwable = e;
> System.out.println(e);
> }
>
> Afterwards I am trying to revalidate the Dom document, after the user
> has choosen an external DTD
> I retrieve the DomConfiguration from the document:
> DocumentImpl docImpl = (DocumentImpl) document;
> DOMConfiguration config = docImpl.getDomConfig();
>
> And I set the following parameters on the domconfiguration.(schema
> contains the absolute path to the choosen schema file):
>
> //set error handler
> config.setParameter("error-handler", this);
>
> // set validation feature
> config.setParameter("validate", Boolean.TRUE);
>
> // set schema language
> if (source.getSchemaType() == XMLSource.SCHEMA_TYPE_XSD)
> {
> System.out.println(this.getClass() + " Use schemaGrammar");
> config.setParameter(
> "schema-type",
> "http://www.w3.org/2001/XMLSchema";);
> }
> else
> {
> System.out.println(this.getClass() + " Use dtdGrammar");
> config.setParameter(
> "schema-type",
> "http://www.w3.org/TR/REC-xml";);
>
> }
>
> config.setParameter("datatype-normalization", Boolean.FALSE);
> config.setParameter("psvi", Boolean.TRUE);
> config.setParameter("schema-location", schema);
>
> then I revalidate the Document
> ((DocumentImpl) document).normalizeDocument();
>
>
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