[ http://issues.apache.org/jira/browse/XERCESJ-1057?page=history ]
Michael Glavassevich resolved XERCESJ-1057:
-------------------------------------------
Resolution: Duplicate
Duplicate of XERCESJ-1059.
> NullPointerException with class QNameDV method getActualValue
> -------------------------------------------------------------
>
> Key: XERCESJ-1057
> URL: http://issues.apache.org/jira/browse/XERCESJ-1057
> 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 ...
> Consequence : get a nullPointerException in Xample when using XMLSchema.xsd
> and set "type" attribute of an element with a prefix (example : "xs:string")
> Here is 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)
> Here is 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.
> There's is some tests, after, in order to see if prefix.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. In relity, yhe context
> can be return a null value in case of Dummy Context or Empty Context (see
> XSSimpleTypeDecl.class)
> Solution : if the function return null, the prefix String must be set with
> EMPTY_STRING
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