throws org.xml.sax.SAXException
{
StringTokenizer tokenizer = new StringTokenizer(value, " \t\n\r\f");
int nStrings = tokenizer.countTokens();
StringVector strings = new StringVector(nStrings);
for (int i = 0; i < nStrings; i++)
{
String prefix = tokenizer.nextToken();
String url = handler.getNamespaceForPrefix(prefix);
if (url != null)
strings.addElement(url);
else
throw new org.xml.sax.SAXException(XSLMessages.createMessage(XSLTErrorResources.ER_CANT_RESOLVE_NSPREFIX, new Object[] {prefix}));
}