Github user ajs6f commented on a diff in the pull request:
https://github.com/apache/jena/pull/203#discussion_r95095064
--- Diff: jena-arq/src/test/java/org/apache/jena/riot/TestJsonLDReader.java
---
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.jena.riot;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.StringReader;
+import java.nio.charset.StandardCharsets;
+
+import org.apache.jena.query.Dataset;
+import org.apache.jena.query.DatasetFactory;
+import org.apache.jena.rdf.model.Model;
+import org.apache.jena.rdf.model.ModelFactory;
+import org.apache.jena.riot.lang.JsonLDReader;
+import org.apache.jena.riot.system.StreamRDFLib;
+import org.apache.jena.sparql.util.Context;
+import org.apache.jena.vocabulary.RDF;
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonGenerationException;
+import com.github.jsonldjava.utils.JsonUtils;
+
+public class TestJsonLDReader {
+
+ @Test public final void test() {
+ try {
+ String jsonld =
"{\"@id\":\"_:b0\",\"@type\":\"http://schema.org/Person\",\"name\":\"John
Doe\",\"@context\":\"http://schema.org/\"}";;
+ StringReader reader = new StringReader(jsonld);
+ Model m = ModelFactory.createDefaultModel();
+ m.read(reader, null, "JSON-LD");
+ m.write(System.out, "TURTLE");
+ } catch (Throwable e) {
+ e.printStackTrace();
+ }
+ }
+
+ /** test using the jena Context mechanism to pass the jsonld
"@context" */
+ @Test public final void replaceAtContextTest() throws
JsonGenerationException, IOException {
+ // some jsonld using schema.org's URI as "@context"
+ String jsonld =
"{\"@id\":\"_:b0\",\"@type\":\"Person\",\"name\":\"John
Doe\",\"@context\":\"http://schema.org/\"}";;
+
+ // a subset of schema.org that can be used as @context for jsonld
+ String jsonldContext =
"{\"name\":{\"@id\":\"http://schema.org/name\"},\"Person\": {\"@id\":
\"http://schema.org/Person\"}}";;
+
+ // pass the jsonldContext to the read using a jena Context
+ Context jenaCtx = new Context();
+ Object jsonldContextAsMap = JsonUtils.fromInputStream(new
ByteArrayInputStream(jsonldContext.getBytes(StandardCharsets.UTF_8)));
+ jenaCtx.set(JsonLDReader.JSONLD_CONTEXT, jsonldContextAsMap);
+
+ // read the jsonld, replacing its "@context"
+ InputStream in = new
ByteArrayInputStream(jsonld.getBytes(StandardCharsets.UTF_8));
+ Dataset ds = DatasetFactory.create();
+ ReaderRIOT reader = RDFDataMgr.createReader(Lang.JSONLD);
--- End diff --
This whole section seems complex. How about
`org.apache.jena.riot.RDFDataMgr.read(Model, StringReader, String, Lang)`?
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