RE: Problem using EntityResolver

23 Aug 2001 20:32:24 -0000

Title: Problem using EntityResolver
The files
 
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 23, 2001 4:04 PM
To: [EMAIL PROTECTED]
Subject: RE: Problem using EntityResolver

I do not instantiate this object the XMLValidator instantiates
 
 
tst = new TraverseSchema( root,
                                     fStringPool,
                                     (SchemaGrammar)grammar,
                                     fGrammarResolver,
                                    fErrorReporter,
                                    source.getSystemId(),
                                    currentER,
                                     getSchemaFullCheckingEnabled(),
                                    generalAttrCheck,
                                    fExternalSchemas,
                                    fExternalNoNamespaceSchema);
 
Schema ebxml imports envelope,xlink,xml_lang,xml_dsig schemas
So If the parser somehow loads the imported files first then the parsing works fine.
But if the parser tries to load ebxml schema first then it gets into this problem of NULL pointer.
This only happens when I use my own Entity resolver.
Is this something related import which is not handled properly or just order in which schema should be in the xml file.
 
I have XML and schema files attached.
 
-----Original Message-----
From: Menarek John-NJM010 [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 23, 2001 3:05 PM
To: '[EMAIL PROTECTED]'
Subject: RE: Problem using EntityResolver

How are you instantiating this object?
 
The defualt value for fCurrentSchemaURL is ""
 
If you call the constructor:
    public  TraverseSchema(Element root, StringPool stringPool,
                           SchemaGrammar schemaGrammar,
                           GrammarResolver grammarResolver,
                           boolean fullChecking
                           ) throws Exception
 
It looks as if it will keep that value whereas the other constructors over write it with an agrument passed in
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 23, 2001 10:01 AM
To: [EMAIL PROTECTED]
Subject: RE: Problem using EntityResolver

I checked It does not return NULL.
I open the source code put the debug statements in openImportedSchema method and
it tries to see a circular dependency of the import schema and itself. But itself is null i.e.(fCurrentSchemaURL)
 
Has any one been successfule to use Entity Resolver with schemas and import clause in schema?
Tushar.
 
 private Element openImportedSchema(String location) throws Exception {
        // expand it before passing it to the parser
        InputSource source = null;
        System.out.println("Location "+ location + "Current Schema "+fCurrentSchemaURL);
        if (fEntityResolver != null) {
            source = fEntityResolver.resolveEntity("", location);
        }
        if (source == null) {
            location = expandSystemId(location, fCurrentSchemaURL);
            source = new InputSource(location);
        }
         else {
             // create a string for uniqueness of this imported schema in fImportLocations
             if (source.getPublicId () != null)
                 location = source.getPublicId ();
 
             location += (',' + source.getSystemId ());
         }
 
         if (fImportLocations.contains((Object)location)) {
    System.out.println("fImportLocations.contains((Object)location");
             return null;
         }
        // check to make sure we're not importing ourselves...
        if(source.getSystemId().equals(fCurrentSchemaURL)) {
            // REVISIT:  localize
   System.out.println("// REVISIT:localize");
            return null;
        }
-----Original Message-----
From: Menarek John-NJM010 [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 23, 2001 10:51 AM
To: '[EMAIL PROTECTED]'
Subject: RE: Problem using EntityResolver

In your entity resolver class are you sure that you are not returning a NULL?
Either by falling through to the default behaviour of the else block.
Or that your catch statement is catching a FileNotFoundException.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 22, 2001 3:31 PM
To: [EMAIL PROTECTED]
Subject: Problem using EntityResolver

Xerces 1.4.2:
When I try to parse a document with xml files and schema files in the same directory. The parsing works fine.
But Instead if Iset my own EntityResolver in the parser it fails.
I have included SourceCode for Parser, Resolver.
If you need I can provide you with the XML and xsd files.
Also the Stack Trace is

java.lang.NullPointerException
        at org.apache.xerces.validators.schema.TraverseSchema.openImportedSchema(TraverseSchema.java:2045)
        at org.apache.xerces.validators.schema.TraverseSchema.traverseImport(TraverseSchema.java:1995)
        at org.apache.xerces.validators.schema.TraverseSchema.doTraverseSchema(TraverseSchema.java:720)
        at org.apache.xerces.validators.schema.TraverseSchema.<init>(TraverseSchema.java:540)
        at org.apache.xerces.validators.common.XMLValidator.resolveSchemaGrammar(XMLValidator.java:2787)
        at org.apache.xerces.validators.common.XMLValidator.parseSchemas(XMLValidator.java:2673)
        at org.apache.xerces.validators.common.XMLValidator.bindNamespacesToElementAndAttributes(XMLValidator.java:2614)

        at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:1152)
        at org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanner.java:1862)
        at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1005)
        at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
        at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1081)
        at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1122)
        at sax.SAX2Writer.print(SAX2Writer.java:153)
        at sax.SAX2Writer.main(SAX2Writer.java:444)
<<SoapResolver.java>> <<SAX2Writer.java>>

--------------------------------------------------------------
Tushar Dave
Employease Inc.
Phone: 404-949-8833 (NEW)
Email: [EMAIL PROTECTED]
--------------------------------------------------------------

Attachment: soap_envelope.xml
Description: Binary data

Attachment: ebxml-v01.01.xsd
Description: Binary data

Attachment: envelope-v01.01.xsd
Description: Binary data

Attachment: xlink-v01.01.xsd
Description: Binary data

Attachment: xmldsig-core-schema-v01.01.xsd
Description: Binary data

Attachment: xml_lang-v01.01.xsd
Description: Binary data

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