[ http://issues.apache.org/jira/browse/XERCESJ-1059?page=history ]
Michael Glavassevich resolved XERCESJ-1059:
-------------------------------------------
Resolution: Fixed
ValidationContext.getSymbol() is not allowed to return null. It must return a
unique string equal to the one passed in. When used in conjunction with the
parser, this unique string must be the same string that would be returned from
String.intern(). There were a couple internal ValidationContext implementations
which were returning null. I've fixed those in CVS.
User implementations of ValidationContext are responsible for returning unique
strings from getSymbol(). If QNameDV is receiving null from the
ValidationContext, it's a bug in the ValidationContext implementation.
> NullPointerException with class QNameDV method getActualValue
> -------------------------------------------------------------
>
> Key: XERCESJ-1059
> URL: http://issues.apache.org/jira/browse/XERCESJ-1059
> Project: Xerces2-J
> Type: Bug
> Components: XML Schema API
> Versions: 2.6.2
> Environment: Windows XP SP2 JRE 1.4.2_06-b03
> Reporter: vaseux mickael
>
> Sorry For My English I'm french user of Xerces API !!!
> Consequences :
> NullPointerException with Xample Editor when using XMLSchema.xsd.
> Here's the exception :
> java.lang.NullPointerException
> at org.apache.xerces.impl.dv.xs.QNameDV.getActualValue(QNameDV.java:105)
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.getActualValue(Unknown
> Source)
> at org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.validate(Unknown
> Source)
> at com.fg.xmleditor.XSRef.validate(XSRef.java:119)
> at com.fg.xmleditor.Validator.isValid(Validator.java:122)
> Her's the code of the method :
> public Object getActualValue(String content, ValidationContext context)
> throws InvalidDatatypeValueException {
> // "prefix:localpart" or "localpart"
> // get prefix and local part out of content
> String prefix, localpart;
> int colonptr = content.indexOf(":");
> if (colonptr > 0) {
> prefix = context.getSymbol(content.substring(0,colonptr));
> localpart = content.substring(colonptr+1);
> } else {
> prefix = EMPTY_STRING;
> localpart = content;
> }
> // both prefix (if any) a nd localpart must be valid NCName
> if (*prefix.length() > 0* && !XMLChar.isValidNCName(prefix))
> throw new
> InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new
> Object[]{content, "QName"});
> if(!XMLChar.isValidNCName(localpart))
> throw new
> InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new
> Object[]{content, "QName"});
> // resove prefix to a uri, report an error if failed
> String uri = context.getURI(prefix);
> if (prefix.length() > 0 && uri == null)
> throw new InvalidDatatypeValueException("UndeclaredPrefix", new
> Object[]{content, prefix});
> return new XQName(prefix, context.getSymbol(localpart),
> context.getSymbol(content), uri);
> }
> In fact, the function : context.getSymbol(content.substring(0,colonptr))
> return the null value, and there's no test to see if the value returned is
> null or not.
> Tere's is some tests after in order to see if length() is > 0 or not, that's
> show that the developper thinked that getSymbol return ALWAYS a String, which
> is empty if the symbol hasn't be found.
> Solution :
> If the function return null value, the prefix String must be set with an
> EMPTY_STRING.
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