/*
* Analyze the schema at the given URI, the schema is parsed and stored in
* XMLObjectInfos.
*/
private void analyzeXSD(URI uri) {
uri = uri.normalize();
// already seen this xsd, skip it
if (xmlObjectInfos.containsKey(uri.toString())) return;
XSDSchema xsdSchema = XSDSchemaImpl.getSchemaForSchema(uri.toString());
String encoding = null;
// if schema is not cached, parse it
if (xsdSchema == null) {
XSDParser p = new XSDParser(null);
InputStream is = NetUtils.getURLInputStream(uri.toString());
if (is != null) {
p.parse(is);
xsdSchema = p.getSchema();
encoding = p.getEncoding();
}
} else encoding = xsdSchema.getDocument().getXmlEncoding();
if (xsdSchema != null) {
if (encoding == null) encoding = "UTF-8";
XMLObjectInfo info = new XMLObjectInfo(new Path(uri.getPath()), xsdSchema, encoding);
xmlObjectInfos.put(uri.toString(), info);
updatePathPrefix(info);
// analyze its imports and includes
analyzeXSD(uri, xsdSchema);
}
}
@Override
public void read(InputSource source, Node outputNode) throws Exception {
logger.debug("Processing XSD '{0}'", outputNode);
Reader reader = null;
InputStream stream = null;
try {
// Parse the XSD, measuring the number of bytes as we read ...
Map<?, ?> options = new HashMap<Object, Object>();
XSDParser parser = new XSDParser(options);
AtomicLong contentSize = new AtomicLong();
if (source.getCharacterStream() != null) {
reader = new SizeMeasuringReader(source.getCharacterStream(), contentSize);
source = new InputSource(reader);
} else {
stream = new SizeMeasuringInputStream(source.getByteStream(), contentSize);
source = new InputSource(stream);
}
parser.parse(source);
// Get some metadata about the XSD ...
String encoding = parser.getEncoding();
// Convert the XSD to content ...
XSDSchema schema = parser.getSchema();
process(schema, encoding, contentSize.get(), outputNode);
} finally {
try {
if (reader != null) reader.close();
} catch (Exception e) {
logger.debug(e, "Cannot close reader stream ");
} finally {
try {
if (stream != null) stream.close();
} catch (Exception e) {
logger.debug(e, "Cannot close reader stream ");
}
}
}
}