public Model getMappingModel() {
if (mappingModel == null && jdbcURL == null && mappingFile == null && input_mapping == null) {
throw new D2RQException("no mapping file or JDBC URL specified");
}
if (mappingModel == null && mappingFile == null) {
if (input_mapping != null) {
// gui staff
mappingModel = ModelFactory.createDefaultModel();
mappingModel.read(new StringReader(input_mapping), getResourceBaseURI(), "TURTLE");
} else {
if (d2rqMapping == null && r2rmlMapping == null) {
generateMapping();
}
StringWriter out = new StringWriter();
getWriter().write(out);
mappingModel = ModelFactory.createDefaultModel();
mappingModel.read(new StringReader(out.toString()), getResourceBaseURI(), "TURTLE");
}
}
if (mappingModel == null) {
log.info("Reading mapping file from " + mappingFile);
// Guess the language/type of mapping file based on file extension. If it is not among the
// known types then assume that the file has TURTLE syntax and force to use TURTLE parser
String lang = FileUtils.guessLang(mappingFile, "unknown");
try {
if (lang.equals("unknown")) {
mappingModel = FileManager.get().loadModel(mappingFile, getResourceBaseURI(), "TURTLE");
} else {
// if the type is known then let Jena auto-detect it and load the appropriate parser
mappingModel = FileManager.get().loadModel(mappingFile, getResourceBaseURI(), null);
}
} catch (TurtleParseException ex) {
// We have wired RIOT into Jena in the static initializer above,
// so this should never happen (it's for the old Jena Turtle/N3 parser)
throw new D2RQException("Error parsing " + mappingFile + ": " + ex.getMessage(), ex, 77);
} catch (JenaException ex) {
if (ex.getCause() != null && ex.getCause() instanceof RiotException) {
throw new D2RQException(
"Error parsing " + mappingFile + ": " + ex.getCause().getMessage(), ex, 77);
}
throw ex;
} catch (AtlasException ex) {
// Detect the specific case of non-UTF-8 encoded input files
// and do a custom error message
if (FileUtils.langTurtle.equals(lang)
&& ex.getCause() != null
&& (ex.getCause() instanceof MalformedInputException)) {
throw new D2RQException(
"Error parsing "
+ mappingFile
+ ": Turtle files must be in UTF-8 encoding; "
+ "bad encoding found at byte "
+ ((MalformedInputException) ex.getCause()).getInputLength(),
ex,
77);
}
// Generic error message for other parse errors
throw new D2RQException("Error parsing " + mappingFile + ": " + ex.getMessage(), ex, 77);
}
}
return mappingModel;
}
public static Model getLocalModel(String path) {
InputStream in = ModelUtil.class.getResourceAsStream(path);
Model model = ModelUtil.createDefaultModel();
model.read(in, null, FileUtils.guessLang(path, FileUtils.langXML));
return model;
}
