如何加载N-三元组模型并从RDF文件中获取名称空间？(新手)

Question

我有一个如下所示的RDF/XML文件：

<rdf:RDF
xmlns:go="http://www.geneontology.org/dtds/go.dtd#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
        <go:term rdf:about="http://www.geneontology.org/go#GO:0000001">
            <go:accession>GO:0000001</go:accession>
            <go:name>mitochondrion inheritance</go:name>
            <go:synonym>mitochondrial inheritance</go:synonym>
            <go:definition>The distribution of mitochondria, including the mitochondrial genome, into daughter cells after mitosis or meiosis, mediated by interactions between mitochondria and the cytoskeleton.</go:definition>
            <go:is_a rdf:resource="http://www.geneontology.org/go#GO:0048308" />
            <go:is_a rdf:resource="http://www.geneontology.org/go#GO:0048311" />
        </go:term>
</rdf:RDF>

然后，我必须将这个RDF/XML转换成N格式，并且我已经在Jena中自动完成了这一点：

FileManager.get().addLocatorClassLoader(Converter.class.getClassLoader());
    Model model = FileManager.get().loadModel("smallfacts.rdf");
    try {

          File file= new File("outputsmall.txt");
          model.write(new FileOutputStream(file), "N-Triples");
        } catch (IOException e) {
          e.printStackTrace();

但是，我需要用前缀缩短每个谓词。我必须得到这样的东西：

<http://www.geneontology.org/go#GO:2000391> is_a <http://www.geneontology.org/go#GO:2000389>.
<http://www.geneontology.org/go#GO:2000391> accession "GO:2000391".

我读过关于getNSPrefix()的文章，并做了一些尝试，例如：

FileManager.get().addLocatorClassLoader(Converter.class.getClassLoader());
    Model model = FileManager.get().loadModel("smallfacts.rdf");
    try {

          File file= new File("outputsmall.txt");
          model.getNsPrefixURI("http://www.geneontology.org/dtds/go.dtd#");
          model.write(new FileOutputStream(file), "N-Triples", "http://www.geneontology.org/dtds/go.dtd#");
        } catch (IOException e) {
          e.printStackTrace();

在这种情况下，如何使用getNsPrefixURI()？我应该用另一种方法吗？

Answer 1

尝试使用RDFDataMgr和RDFFormat.TURTLE_FLAT编写RDF数据。https://jena.apache.org/documentation/io/rdf-output.html