XSLTTransformer Class Reference

A class performing XSLT transformations on XML files and XSD schema validations. More...

Static Public Member Functions
static Boolean	validateAgainstXSDSchema (String inputStr, String schemapath) throws SAXException, IOException
	Validates an XML file given as a String against an XSD schema given by a filepath to it on the harddisk. More...
static String	gmdToGeoDCAT (String source) throws TransformerException
	Converts a GMD representation to GeoDCAT using the GDM2GeoDCAT XSLT file. More...
static String	GeoDCATToHTML (String source) throws TransformerException
	Performs a transformation from GeoDCAT XML to GeoDCAT in HTML. More...

Detailed Description

A class performing XSLT transformations on XML files and XSD schema validations.

Member Function Documentation

GeoDCATToHTML()

static String GeoDCATToHTML ( String  source ) throws TransformerException

static

Performs a transformation from GeoDCAT XML to GeoDCAT in HTML.

Parameters

source

the GeoDCAT XML representation as String

Returns

the HTML representation as a String

Exceptions

TransformerException

when transformation errors occur

                                                                                       {
                System.out.println("Source: " + source);
                InputStreamReader input = new InputStreamReader(new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8)));
                TransformerFactory tFactory = new net.sf.saxon.TransformerFactoryImpl();
                Source xmlSource = new StreamSource(input);
                Source xslSource = new StreamSource(new File("dcat-ap-rdf2rdfa.xsl"));
                StringWriter outWriter = new StringWriter();
                StreamResult fOutresult = new StreamResult( outWriter );
                Transformer transformer = tFactory.newTransformer(xslSource);
                transformer.transform(xmlSource, fOutresult);
                return outWriter.toString();
        }

Referenced by DCATFormatter.formatter().

gmdToGeoDCAT()

static String gmdToGeoDCAT ( String  source ) throws TransformerException

static

Converts a GMD representation to GeoDCAT using the GDM2GeoDCAT XSLT file.

Parameters

source

A String representing a GMD XML document

Returns

A GeoDCAT representation as XML

Exceptions

TransformerException

when transformation errors occur

                                                                                      {
                System.out.println("Source: " + source);
                InputStreamReader input = new InputStreamReader(new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8)));
                TransformerFactory tFactory = new net.sf.saxon.TransformerFactoryImpl();
                Source xmlSource = new StreamSource(input);
                Source xslSource = new StreamSource(new File("gmd2geodcat.xsl"));
                StringWriter outWriter = new StringWriter();
                StreamResult fOutresult = new StreamResult( outWriter );
                Transformer transformer = tFactory.newTransformer(xslSource);
                transformer.transform(xmlSource, fOutresult);
                return outWriter.toString();
        }

Referenced by DCATFormatter.formatter().

validateAgainstXSDSchema()

static Boolean validateAgainstXSDSchema ( String  inputStr, String  schemapath  ) throws SAXException, IOException

static

Validates an XML file given as a String against an XSD schema given by a filepath to it on the harddisk.

Parameters

inputStr	The XML document to verify
schemapath	The path to the XSD schema

Returns

True if the validation was successful, False otherwise

Exceptions

SAXException	on parsing errors
IOException	on reading errors

                                                                                                                           {
                    SchemaFactory factory = 
                            SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
                    Schema schema = factory.newSchema(new File(schemapath));
                    Validator validator = schema.newValidator();
                    InputStreamReader input = new InputStreamReader(new ByteArrayInputStream(inputStr.getBytes(StandardCharsets.UTF_8)));
                    try {
                        validator.validate(new StreamSource(input));
                        return true;
                    } catch (SAXException e) {
                        e.printStackTrace();
                        return false;
                    }
        }