Skip to content

rdf to-jelly: preserve blank node IDs #156

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Ostrzyciel merged 1 commit into from
Jul 12, 2025
+24 −1
Merged

rdf to-jelly: preserve blank node IDs #156

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 5 additions & 1 deletion src/main/scala/eu/neverblink/jelly/cli/command/rdf/RdfToJelly.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import eu.neverblink.jelly.convert.jena.JenaConverterFactory
import eu.neverblink.jelly.convert.jena.riot.{JellyFormatVariant, JellyLanguage, JellyStreamWriter}
import eu.neverblink.jelly.core.proto.google.v1 as google
import eu.neverblink.jelly.core.proto.v1.{LogicalStreamType, PhysicalStreamType, RdfStreamOptions}
import org.apache.jena.riot.lang.LabelToNode
import org.apache.jena.riot.system.StreamRDFWriter
import org.apache.jena.riot.{Lang, RDFParser, RIOT}

Expand Down Expand Up @@ -159,7 +160,10 @@ object RdfToJelly extends RdfSerDesCommand[RdfToJellyOptions, RdfFormat.Readable
.build()
JellyStreamWriter(JenaConverterFactory.getInstance(), variant, outputStream)

RDFParser.source(inputStream).lang(jenaLang).parse(jellyWriter)
RDFParser.source(inputStream)
.lang(jenaLang)
.labelToNode(LabelToNode.createUseLabelAsGiven())
.parse(jellyWriter)
jellyWriter.finish()

/** Convert Jelly text to Jelly binary.
Expand Down
19 changes: 19 additions & 0 deletions src/test/scala/eu/neverblink/jelly/cli/command/rdf/RdfToJellySpec.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,25 @@ class RdfToJellySpec extends AnyWordSpec with TestFixtureHelper with Matchers:
content.containsAll(tripleModel.listStatements()) shouldBe true
}

"preserve the original blank node IDs" in {
val inputString =
"""_:b1 <http://a.com/p> _:b2 .
|_:b1 <http://a.com/p> _:b3 .
|""".stripMargin
val input = ByteArrayInputStream(inputString.getBytes)
RdfToJelly.setStdIn(input)
val (out, err) = RdfToJelly.runTestCommand(
List("rdf", "to-jelly", "--in-format", RdfFormat.NQuads.cliOptions.head),
)
val newIn = new ByteArrayInputStream(RdfToJelly.getOutBytes)
val content = translateJellyBack(newIn)
content.size() should be(2)
val statements = content.listStatements().asScala.toSeq
statements.flatMap(s => Seq(s.getSubject, s.getObject)).toSet
.map(_.asResource().getId.toString)
.toSet should be(Set("b1", "b2", "b3"))
}

"input stream to output stream, generalized RDF (N-Triples)" in {
val inputStream = new FileInputStream(getClass.getResource("/generalized.nt").getPath)
RdfToJelly.setStdIn(inputStream)
Expand Down