Resolves an external parsed entity. If the entity cannot be
resolved, this method should return null.
// When both pubId and sysId are null, the user's entity resolver
// can do nothing about it. We'd better not bother calling it.
// This happens when the resourceIdentifier is a GrammarDescription,
// which describes a schema grammar of some namespace, but without
// any schema location hint. -Sg
String pubId = resourceIdentifier.getPublicId();
String sysId = resourceIdentifier.getExpandedSystemId();
if (pubId == null && sysId == null)
return null;
// resolve entity using SAX entity resolver
if (fEntityResolver != null && resourceIdentifier != null) {
try {
InputSource inputSource = fEntityResolver.resolveEntity(pubId, sysId);
if (inputSource != null) {
String publicId = inputSource.getPublicId();
String systemId = inputSource.getSystemId();
String baseSystemId = resourceIdentifier.getBaseSystemId();
InputStream byteStream = inputSource.getByteStream();
Reader charStream = inputSource.getCharacterStream();
String encoding = inputSource.getEncoding();
XMLInputSource xmlInputSource =
new XMLInputSource(publicId, systemId, baseSystemId);
xmlInputSource.setByteStream(byteStream);
xmlInputSource.setCharacterStream(charStream);
xmlInputSource.setEncoding(encoding);
return xmlInputSource;
}
}
// error resolving entity
catch (SAXException e) {
Exception ex = e.getException();
if (ex == null) {
ex = e;
}
throw new XNIException(ex);
}
}
// unable to resolve entity
return null;
