private Data dereference(XMLCryptoContext context) throws XMLSignatureException {
Data data = null;
// use user-specified URIDereferencer if specified; otherwise use deflt
URIDereferencer deref = context.getURIDereferencer();
if (deref == null) {
deref = DOMURIDereferencer.INSTANCE;
}
try {
data = deref.dereference(this, context);
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, "URIDereferencer class name: " + deref.getClass().getName());
log.log(Level.FINE, "Data class name: " + data.getClass().getName());
}
} catch (URIReferenceException ure) {
throw new XMLSignatureException(ure);
}
return data;
}