/**
* gets the named resource as a stream, parses and inits
*
* @return true if successful
* @throws ResourceNotFoundException if template not found from any available source.
* @throws ParseErrorException if template cannot be parsed due to syntax (or other) error.
* @throws Exception some other problem, should only be from initialization of the template AST.
*/
public boolean process() throws ResourceNotFoundException, ParseErrorException, Exception {
data = null;
InputStream is = null;
errorCondition = null;
/*
* first, try to get the stream from the loader
*/
try {
is = resourceLoader.getResourceStream(name);
} catch (ResourceNotFoundException rnfe) {
/*
* remember and re-throw
*/
errorCondition = rnfe;
throw rnfe;
}
/*
* if that worked, lets protect in case a loader impl
* forgets to throw a proper exception
*/
if (is != null) {
/*
* now parse the template
*/
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is, encoding));
data = rsvc.parse(br, name);
initDocument();
return true;
} catch (UnsupportedEncodingException uce) {
String msg =
"Template.process : Unsupported input encoding : " + encoding + " for template " + name;
errorCondition = new ParseErrorException(msg);
throw errorCondition;
} catch (ParseException pex) {
/*
* remember the error and convert
*/
errorCondition = new ParseErrorException(pex.getMessage());
throw errorCondition;
} catch (Exception e) {
/*
* who knows? Something from initDocument()
*/
errorCondition = e;
throw e;
} finally {
/*
* Make sure to close the inputstream when we are done.
*/
is.close();
}
} else {
/*
* is == null, therefore we have some kind of file issue
*/
errorCondition = new ResourceNotFoundException("Unknown resource error for resource " + name);
throw errorCondition;
}
}
