>
>
> [EMAIL PROTECTED] wrote:
>
>>Thanks. The code is very similar to mine. Have you tried to parse an
>>instance document referencing a schema other than those you
>>precompile?]
>>
> Yes i did try and it works fine .
>
>>In my case, unless my XMLEntityResolver throws the XNIException instead
>>of returning null, the refernced schema appears to be loaded, despite
>>the
>>
> If i am not wrong what locked(lockPool) does is ,it prevents any new
> grammar being added to the cache.
> You should still be able to load and validate other schema and xml
> files.
Hmm... The relevant part from the FAQ reads:
"The "active" approach: Preload a grammar pool implementation with all the
grammars you'll need, then lock it so that no new grammars will be added.
Then registering this on the configuration will allow validators to make use
of this set; registering a do-nothing EntityResolver will allow the
application to deny validators from using any but the "approved" grammar
set."
Note that the "deny validation". So, if you parse an XML document
referencing the schema NOT in the preloaded set, and it is quietly parsed, I
would not consider it to be working fine. I would expect it that the
velidation denial would manifest itself somehow (exception?). Don't you
agree?
Regards,
-a
>
> Regards
> venu
>
>>grammar pool being locked! I know it is loaded because I changed the
>>instance document to be incorrect WRT its schema, and the parser threw
>>the exception.
>>
>>-a
>>
>>
>>>Hi ,
>>>
>>> This may not solve your problem or answer your questions , but
>>>attached is a small program which i was working on , see if it is of
>>>any help.
>>>
>>>Regards
>>>venu
>>>
>>>
>>>[EMAIL PROTECTED] wrote:
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>Perhaps this issue has been discussed on the list but the archives
>>>>aren't available, so I have to post. Here goes...
>>>>
>>>>I am trying to use what is called 'active' schema caching, as
>>>>demonstrated by the XMLGrammarBuilder example, except, I want to use
>>>>DOMParser and use the DOM of the XML instances that are successfully
>>>>validated. This the code I'm using
>>>>
>>>> SymbolTable symtab = new SymbolTable();
>>>> XMLGrammarPreparser preparser = new
>>>> XMLGrammarPreparser(symtab);
>>>> XMLGrammarPoolImpl pool = new XMLGrammarPoolImpl();
>>>>
>>>> preparser.registerPreparser(XMLGrammarDescription.XML_SCHEMA,
>>>> null);
>>>> preparser.setProperty(GRAMMAR_POOL, pool);
>>>> preparser.setFeature(NAMESPACES_FEATURE_ID, true);
>>>> preparser.setFeature(VALIDATION_FEATURE_ID, true);
>>>> preparser.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
>>>> preparser.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
>>>> preparser.setErrorHandler(this);
>>>>
>>>> System.out.println("Pre-compiling Schema from file " + xsd);
>>>> Grammar g =
>>>> preparser.preparseGrammar(XMLGrammarDescription.XML_SCHEMA, new
>>>>XMLInputSource(null, xsd, null));
>>>> pool.lockPool();
>>>>
>>>> XMLParserConfiguration parsercfg = new
>>>> StandardParserConfiguration(symtab,
>>>>pool);
>>>> parsercfg.setFeature(NAMESPACES_FEATURE_ID, true);
>>>> parsercfg.setFeature(VALIDATION_FEATURE_ID, true);
>>>> parsercfg.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
>>>> parsercfg.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
>>>> parsercfg.setEntityResolver(new XMLEntityResolver() {
>>>> public XMLInputSource
>>>>resolveEntity(XMLResourceIdentifier id) throws XNIException {
>>>> System.out.println("Resolving
>>>> resource: " +
>>>> id.getLiteralSystemId());
>>>> throw new
>>>> XNIException("Not resolving
>>>> entity..."); //return null;
>>>> }
>>>> });
>>>>
>>>>First question is about the XMLEntityResolver. The FAQ instructs to
>>>>register a "do-nothing" EntityResolver. What does it mean? If I
>>>>simply return null (do nothing?) the XML instance document that
>>>>should fail validation quietly validates. Does it mean I should throw
>>>>exception, as I do? That seems to work but is it "do-nothing"?
>>>>
>>>>More importantly, since not only need to validate XML but also get
>>>>DOMs of the valid ones, I followed the FAQ again and registered the
>>>>DOMParser:
>>>>
>>>> parser = new DOMParser(parsercfg);
>>>> parsercfg.setDocumentHandler(parser);
>>>>
>>>> ....
>>>> // f is File
>>>> XMLInputSource xis = new XMLInputSource(null, f.getName(), null);
>>>> System.out.println("Parsing instance XML in file " + f.getName()
>>>> + " "
>>>>+ xis.getSystemId());
>>>>
>>>> parsercfg.parse(xis);
>>>>
>>>>
>>>>But doe not work at all! I get a NullPointerException and the
>>>>XMLEntityResolver isn't called at all:
>>>>
>>>>
>>>>Pre-compiling Schema from file 2.xsd
>>>>Parsing instance XML in file 2.xml 2.xml
>>>>java.lang.NullPointerException
>>>> at
>>>> org.apache.xerces.parsers.AbstractDOMParser.startDocument(Unknown
>>>>Source)
>>>> at
>>>> org.apache.xerces.impl.xs.XMLSchemaValidator.startDocument(Unknown
>>>>Source)
>>>> at
>>>> org.apache.xerces.impl.XMLNamespaceBinder.startDocument(Unknown
>>>> Source) at
>>>> org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Unknown
>>>> Source) at
>>>> org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Unknown
>>>>Source)
>>>> at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown
>>>> Source) at
>>>> org.apache.xerces.impl.XMLEntityManager.startDocumentEntity(Unknown
>>>>Source)
>>>> at
>>>> org.apache.xerces.impl.XMLDocumentScannerImpl.setInputSource(Unknown
>>>>Source)
>>>> at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown
>>>> Source) [java] at
>>>> org.apache.xerces.parsers.DTDConfiguration.parse(Unknown
>>>>Source)
>>>> at
>>>> gov.treas.fms.sps.utils.SchemaVerifier.parse(SchemaVerifier.java:189)
>>>> at
>>>> gov.treas.fms.sps.utils.SchemaVerifier.parse(SchemaVerifier.java:199)
>>>>] at
>>>>gov.treas.fms.sps.utils.SchemaVerifier.parse(SchemaVerifier.java:207)
>>>> at
>>>>gov.treas.fms.sps.utils.SchemaVerifier.main(SchemaVerifier.java:337)
>>>>
>>>>
>>>>I tried to test the entity resolver of the DOMParser but it isn't
>>>>called either: parser.setEntityResolver(new EntityResolver() {
>>>> public InputSource resolveEntity(String
>>>> pubid,
>>>>String sysid) throws SAXException, IOException {
>>>> System.out.println("DOM parser entity
>>>> resolver: pub id "
>>>> +
>>>>pubid + ", sysid: " + sysid);
>>>> return null;
>>>> }
>>>> });
>>>>
>>>>So, can somebody explain me what am I doing something wrong? And what
>>>>should I be doing to get what I want. Almost forgot, I'm using Xerces
>>>>2.2.1 and changing parser with my client is very-very-very difficult
>>>>- government agency.
>>>>Please. lend a helping hand. TIA,
>>>>
>>>>Regards,
>>>>
>>>>-a
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>>
>>
>>
>>
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