Prefixes are not preserved when parsing and then serializing Turtle

[reckart]

Current Behavior

For certain types of IRIs / prefix declarations, the declarations are not preserved during a round trip.

When I parse this

prefix server-news: <news:comp.infosystems.www.servers.> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
server-news:unix rdfs:label "News on Unix" .
server-news:windows rdfs:label "News on Windows" .

and serialize it out again, it comes out as this

@prefix server-news: <news:comp.infosystems.www.servers.> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
<news:comp.infosystems.www.servers.unix> rdfs:label "News on Unix" .
<news:comp.infosystems.www.servers.windows> rdfs:label "News on Windows" .

That seems to be because the AbstractRDFParser fails to consider the namespace declarations from the Turtle when generating the IRI instances.

Expected Behavior

The parse should consider the prefix declarations when parsing and create the namespaces and IRIs accordingly in the model. When serializing, these declarations should be respected (cf. #4921).

Steps To Reproduce

	@Test
	public void testUnusualIrisAndPrefixesParseWriteCompare() throws Exception {
		String data = "@prefix server-news: <news:comp.infosystems.www.servers.> .\n" +
				"@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .\n" +
				"server-news:unix rdfs:label \"News on Unix\" .\n" +
				"server-news:windows rdfs:label \"News on Windows\" .\n";

		var expected = Rio.parse(new StringReader(data), "", RDFFormat.TURTLE);

		var stringWriter = new StringWriter();
		var config = new WriterConfig();
		config.set(BasicWriterSettings.INLINE_BLANK_NODES, false);
		config.set(BasicWriterSettings.PRETTY_PRINT, false);
		Rio.write(expected, stringWriter, RDFFormat.TURTLE, config);

		var actual = Rio.parse(new StringReader(stringWriter.toString()), "", RDFFormat.TURTLE);
		assertThat(Models.isomorphic(expected, actual)).as("isomorphic").isTrue();

		assertThat(stringWriter.toString()).isEqualTo(data);
	}

Version

4.3.10

Are you interested in contributing a solution yourself?

No

Anything else?

No response