DCATFormatter Class Reference

Formats metadata according to the GeoDCAT format. More...

Inheritance diagram for DCATFormatter:

Collaboration diagram for DCATFormatter:

Public Member Functions
String	formatter (String collectionid, String collectioncall, String collectionurl, JSONObject workingobj, String format) throws XMLStreamException
String	formatHeader ()
String	formatFooter ()

Static Public Member Functions
static ResultMetadataFormatter	getFormatter (String formatString)

Public Attributes
Integer	lastQueriedElemCount =0
String	mimeType ="text/plain"
String	exposedType ="application/vnd.geo+json"
XMLStreamWriter	xmlwriter

Static Public Attributes
static Map< String, ResultMetadataFormatter >	resultMap =new TreeMap<String, ResultMetadataFormatter>()

Static Package Functions
	[static initializer]

Package Attributes
GMDFormatter	formatter =new GMDFormatter()
	GMDFormatter to produce the initial GMD XML. More...

Detailed Description

Formats metadata according to the GeoDCAT format.

This class takes metadata formatted in the GMD standard and uses an XSLT stylesheet to convert the results to GeoDCAT.

Member Function Documentation

[static initializer]()

[static initializer]

staticpackageinherited

References ResultMetadataFormatter.resultMap.

formatFooter()

String formatFooter ( )

inherited

                                     {
                return "";
        }

formatHeader()

String formatHeader ( )

inherited

                                     {
                return "";
        }

formatter()

String formatter	(	String	collectionid,
		String	collectioncall,
		String	collectionurl,
		JSONObject	workingobj,
		String	format
	)		throws XMLStreamException

Reimplemented from ResultMetadataFormatter.

                                                  {
                String gmd=formatter.formatter(collectionid, collectioncall, collectionurl, workingobj,format);
                String gmdrdf;
                try {
                        gmdrdf = XSLTTransformer.gmdToGeoDCAT(gmd);
                if(format.contains("html")) {
                        this.mimeType=MediaType.TEXT_HTML;
                        return XSLTTransformer.GeoDCATToHTML(gmdrdf);
                }
                OntModel model = ModelFactory.createOntologyModel();
                model.read(IOUtils.toInputStream(gmdrdf, "UTF-8"), null, "RDF/XML");
                OutputStream output = new OutputStream() {
                    private StringBuilder string = new StringBuilder();
 
                    @Override
                    public void write(int b) throws IOException {
                        this.string.append((char) b );
                    }
 
                    //Netbeans IDE automatically overrides this toString()
                    public String toString() {
                        return this.string.toString();
                    }
                };
                if(format.contains("n3")) {
                        this.mimeType="text/n3";
                        model.write(output,"N3");
                        return output.toString();
                }
                if(format.contains("jsonld")) {
                        this.mimeType="application/ld+json";
                        model.write(output,"JSON-LD");
                        return output.toString();
                }
                if(format.contains("ttl")) {
                        this.mimeType="text/ttl";
                        model.write(output,"TTL");
                        return output.toString();
                }
                if(format.contains("ntriples")) {
                        this.mimeType="application/n-triples";
                        model.write(output,"NTRIPLES");
                        return output.toString();
                }
                this.mimeType=MediaType.APPLICATION_XML;
                return gmdrdf;
                } catch (TransformerException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        return "";
                }
        }

References DCATFormatter.formatter, GMDFormatter.formatter(), XSLTTransformer.GeoDCATToHTML(), XSLTTransformer.gmdToGeoDCAT(), and ResultMetadataFormatter.mimeType.

getFormatter()

static ResultMetadataFormatter getFormatter ( String  formatString )

staticinherited

                                                                                {
                formatString=formatString.toLowerCase();
                if(resultMap.containsKey(formatString)) {
                        return resultMap.get(formatString);
                }
                formatString=formatString.replace("+","");
                if(formatString.contains("dcat")) {
                        return resultMap.get("geodcat");
                }
                return resultMap.get("gmd");
        }

Referenced by WebService.getCollectionMetadata().

Member Data Documentation

exposedType

String exposedType ="application/vnd.geo+json"

inherited

formatter

GMDFormatter formatter =new GMDFormatter()

package

GMDFormatter to produce the initial GMD XML.

Referenced by DCATFormatter.formatter().

lastQueriedElemCount

Integer lastQueriedElemCount =0

inherited

mimeType

String mimeType ="text/plain"

inherited

Referenced by DCATFormatter.formatter(), WebService.getCollectionMetadata(), and GMDFormatter.GMDFormatter().

resultMap

Map<String,ResultMetadataFormatter> resultMap =new TreeMap<String, ResultMetadataFormatter>()

staticinherited

Referenced by ResultMetadataFormatter.[static initializer]().

xmlwriter

XMLStreamWriter xmlwriter

inherited

Referenced by GMDFormatter.formatter().