From: [email protected]
To: [email protected]; [email protected]; [email protected]
Date: Thu, 28 Apr 2011 13:27:51 -0700
Subject: RE: woden and xerces Xerces2 Java 2.11.0 (XML Schema 1.1) (Beta)
compatibility question
I am not sure what you are talking about Martin, but “Xerces” is a fully active
Apache Top Level Project: http://xerces.apache.org/MG>agreed I am vaguely
insulted by your continued use of the phrase “indians who worked on the code”
and I am 1) not from India and 2) never worked on Xerces.MG>no insult intended
this authors tag is throughout the codebase
MG>* @author Rajiv MordaniMG>?
You may be trying to reference “Crimson”, which was the default XML parser in
the JRE until it was replaced by Xerces around Java 5 or 6. Crimson did the
job mostly OK, but had some serious problems and most folks didn’t use it and
used Xerces instead – hence the JDK replacement. I don’t know the full history
on Crimson, but Wikipedia claims it was also part of the Apache XML project.
See http://en.wikipedia.org/wiki/Apache_XML“No longer developed projects
Crimson: A Java XML parser derived from the Sun Project X Parser” In any case,
it doesn’t seem like you have all the facts straight here and as far as I know,
Xerces supports XML Schema to the extent documented just fine (i.e. XSD
validation).
MG>why do the latest AXIOM and AXIS specifically exclude xerces-impl and
implement their own xml-schema parsers?MG>if you can exclude the political
noise.. how do you account for the NPEs that dag is seeing? Tom Jordahl From:
Martin Gainty [mailto:[email protected]]
Sent: Thursday, April 28, 2011 3:51 PM
To: [email protected]; [email protected]; [email protected]
Subject: RE: woden and xerces Xerces2 Java 2.11.0 (XML Schema 1.1) (Beta)
compatibility question as i explained in my response i wrote last nite you are
doing nothing wrong
the original IBM Xerces codebase was geared to processing DTD based XML
when XSD 1.0 was published ibm made a half-hearted attempt to accomodate XSD
schema which worked for simple-type elements only
but failed miserably with ComplexType Element Declarations
since that time IBM has opensourced the xerces project to sourceforge (thats a
fancy way of saying abandoned xerces)
and any necessary additions to the code base (such as accomodating XMLSchema
1.1) have gone un-addressed since 2006
the end result is that you will see NPE NullPointerExceptions popping up all
over the place because the indians who worked on the code
never anticipated any of the test scenarios for XML Schema 1.1..there was no
architect and no project lead and general mayhem
took over the project..which is the primary reason xerces became an abandoned
project
currently i have a refactor in the works which implements and extends the
original xerces codebase from Sun Microsystems JAXP parser deploy.jar from the
original Sun Microsystems JDK distributions implementing specifically
com.sun.org.apache.xerces package which DOES work and whose parse routines are
implemented extensively by both Glassfish and Weblogic Application Servers
should be ready for beta by 1 May (in case you're interested)
let me know if you're willing to test I'll send you ca copy next week
Martin Gainty
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> To: [email protected]
> From: [email protected]
> Subject: woden and xerces Xerces2 Java 2.11.0 (XML Schema 1.1) (Beta)
> compatibility question
> Date: Thu, 28 Apr 2011 18:11:07 +0000
>
> I am using woden to parse wsdl files and Xerces2 Java 2.11.0 (XML Schema 1.1)
> (Beta) to parse xsd documents.
> WSDLFactory factory = WSDLFactory.newInstance();
> WSDLReader reader = factory.newWSDLReader();
> reader.setFeature(WSDLReader.FEATURE_VALIDATION, true);
> String wsdlurl = "E://apps//metacenter_home//xsd//greath.wsdl";
> Description descComp = reader.readWSDL(wsdlurl);
>
> When I do so I get the following exception while execution the above code.
>
> java.lang.NullPointerException
> at java.util.StringTokenizer.<init>(StringTokenizer.java:182)
> at java.util.StringTokenizer.<init>(StringTokenizer.java:204)
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.getActualValue(Unknown
> Source)
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.validate(Unknown Source)
> at org.apache.xerces.impl.xs.util.XSTypeHelper.isValueValidForASimpleType
> (Unknown Source)
> at
> org.apache.xerces.impl.xs.util.XSTypeHelper.isAtomicValueValidForAnUnion
> (Unknown Source)
> at org.apache.xerces.impl.xs.XMLSchemaValidator.addDefaultAttributes
> (Unknown Source)
> at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement
> (Unknown Source)
> at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown
> Source)
> at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement
> (Unknown Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.
> dispatch(Unknown Source)
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument
> (Unknown Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
> at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
> at org.apache.woden.internal.DOMWSDLReader.getDocument
> (DOMWSDLReader.java:796)
> at org.apache.woden.internal.DOMWSDLReader.readWSDL
> (DOMWSDLReader.java:296)
> at org.apache.woden.internal.DOMWSDLReader.readWSDL
> (DOMWSDLReader.java:157)
> Link:
> Xerces2 Java 2.11.0 (XML Schema 1.1) (Beta) - zip
>
> Could you tell me what I am doing wrong?
>
> Thanks
> Rachna
>
>
>
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