Yeah, I read the 12/17 version on Monday and sent appropriate comments to www-xml-schema-comments. Between XLink, XPointer, XFragment and XPath, I think external entities are covered but I still don't see anything that replaces internal/text entities.
I haven't seen much direction on implementation. Would it be possible and appropriate to add functionality to Xerces? How about an option that would tell the parser to perform entity substitution on the instance from its internal and external DTD, then perform entity substitution on the Schema from its internal DTD, and finally validate the instance against the schema. Thanks for the bug fix, george -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 21, 1999 6:55 PM To: [EMAIL PROTECTED] Subject: Re: NullPointerException in StringPool.addString I just checked in a fix for this. Be aware that textEntity has gone away in the latest WD. Ted ----- Original Message ----- From: "George T. Joseph" <[EMAIL PROTECTED]> To: "xerces-dev" <[EMAIL PROTECTED]> Sent: Wednesday, December 15, 1999 9:47 PM Subject: NullPointerException in StringPool.addString > I've run across a NullPointerException when parsing an XML document against > a schema and when that schema references an ENTITY in the content of a > textEntity delcaration that was defined in the internal DTD of the schema. > Wow, the sample code is shorter than the description! > > I've just started working my way through the source code but if this is a > known problem or someone's got a quick fix, I'd appreciate the feedback. > > Thanks, > george > > -----environment > Windows NT 4.0sp4 > Sun Win32 JDK 1.2.2 > Xerces-J 1.0.0 > > -----command > java sax.SAXWriter test.xml > > -----XML instance document (test.xml) > <?xml version='1.0'?> > <test xmlns='test.xsd' aaa='&const;'/> > > -----XML Schema (test.xsd) > <?xml version="1.0"?> > <!DOCTYPE schema PUBLIC "-//W3C/DTD XML Schema Version 1.0//EN" > "http://www.w3.org/XML/Group/1999/09/23-xmlschema/structures/structures.dtd"; > [ > <!ENTITY constant '999'> > ]> > <schema> > <!-----------------------*problem**-------------> > <textEntity name='const'>&constant;</textEntity> > <element name='test'><archetype content='empty'> > <attribute name='aaa' type='integer' default='&constant;'/> > <attribute name="xmlns"/> > </archetype></element> > </schema> > > -----Stack Trace > java.lang.NullPointerException: > at org.apache.xerces.utils.StringPool.addString(StringPool.java:251) > at > org.apache.xerces.validators.schema.XSchemaValidator.traverseSchema(XSchemaV > alidator.java:1751) > at > org.apache.xerces.validators.schema.XSchemaValidator.loadSchema(XSchemaValid > ator.java:1701) > at org.apache.xerces.framework.XMLParser.scanAttValue(XMLParser.java:1923) > at > org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanne > r.java:1800) > at > org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XM > LDocumentScanner.java:991) > at > org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner. > java:381) > at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1129) > at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1168) > at sax.SAXWriter.print(SAXWriter.java:134) > at sax.SAXWriter.main(SAXWriter.java:380) > > >
