Clash Royale CLAN TAG

read and write from file using java and the RDF model

I want to read from a file then write it in a RDF/XML model in a file using java,
I've done the initial part in reading the file, but i didn't know how to write it in a file withe the RDF/XML model so I cam have the correct format.

here is part of the read file code:

try {
File file1 = new File("Data/960.txt");
FileReader fileReader1 = new FileReader(file1);
BufferedReader bufferedReader1 = new BufferedReader(fileReader1);
StringBuffer stringBuffer = new StringBuffer();
String line1;
System.out.println("Proteins & Synonyms:");
int count = 0;
while ((line1=bufferedReader1.readLine()) != null) {
String list1 = line1.split("t");
if (list1.length < 2) continue;

proteinG=model2.createResource(ProtURI+list1[0]);
hasSynonyms=model2.createProperty(SynoURI+hasSynonymStr);
Synonyms=list1[1];
proteinG.addProperty(hasSynonyms,Synonyms);

System.out.println(stringBuffer.toString());

} catch (IOException e) {
e.printStackTrace();}

if(model2!=null){
model2.write(System.out, "RDF/XML");


can anyone help please

1 Answer
1

Write to a FileOutputStream not System.out. You may want "RDF-XML-ABBREV" for prettified output.

FileOutputStream

As a general improvement, use RDFDataMgr with Lang.RDFXML (which is by default the pretty form):

RDFDataMgr

Lang.RDFXML

For Java these days that means use a try-resource block:


Model model = null;
try(OutputStream out = new FileOutputStream("filename.rdf")) {
RDFDataMgr.write(out, model, Lang.RDFXML);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}



Model model = null;
try(OutputStream out = new FileOutputStream("filename.rdf")) {
RDFDataMgr.write(out, model, Lang.RDFXML);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}


Final consideration: use Turtle, not RDF/XML; it's easier to read.

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