Add support for JSON-LD import

main/src/com/google/refine/importers/RdfJsonldTripleImporter.java

@@ -0,0 +1,43 @@
+/*
+
+Copyright 2012, Thomas F. Morris
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,           
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY           
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+package com.google.refine.importers;
+
+
+public class RdfJsonldTripleImporter extends RdfTripleImporter {
+
+    public RdfJsonldTripleImporter() {
+        super(RdfTripleImporter.Mode.JSONLD);
+    }
+    
+}

main/src/com/google/refine/importers/RdfTripleImporter.java

@@ -62,7 +62,8 @@ public class RdfTripleImporter extends ImportingParserBase {
         RDFXML,
         NT,
         N3,
-        TTL
+        TTL,
+        JSONLD
     }
 
     public RdfTripleImporter() {
@@ -88,6 +89,9 @@ public class RdfTripleImporter extends ImportingParserBase {
             case TTL:
                 model.read(input, null, "TTL");
                 break;
+            case JSONLD:
+                model.read(input, null, "JSON-LD");
+                break;
             case RDFXML:
                 model.read(input, null);            
                 break;

main/tests/server/src/com/google/refine/tests/importers/RdfTripleImporterTests.java

@@ -233,5 +233,43 @@ public class RdfTripleImporterTests extends ImporterTest {
         Assert.assertEquals(project.rows.get(0).cells.get(1).value, "http://meetings.example.com/cal#m1");
         Assert.assertEquals(project.rows.get(0).cells.get(2).value, "mailto:fred@example.com");
         Assert.assertEquals(project.rows.get(0).cells.get(3).value, "Fred");
+    }
+    
+    @Test
+    public void canParseJsonld() throws UnsupportedEncodingException {
+        String sampleJsonld = "{\n "+
+        "  \"@context\": {\n "+
+        "    \"m\": \"http://www.example.org/meeting_organization#\",\n "+
+        "    \"p\": \"http://www.example.org/personal_details#\",\n "+
+        "    \"rdf\": \"http://www.w3.org/1999/02/22-rdf-syntax-ns#\",\n "+
+        "    \"rdfs\": \"http://www.w3.org/2000/01/rdf-schema#\",\n "+
+        "    \"xsd\": \"http://www.w3.org/2001/XMLSchema#\"\n "+
+        "  },\n "+
+        "  \"@id\": \"http://www.example.org/people#fred\",\n "+
+        "  \"m:attending\": {\n "+
+        "    \"@id\": \"http://meetings.example.com/cal#m1\"\n "+
+        "  },\n "+
+        "  \"p:GivenName\": \"Fred\",\n "+
+        "  \"p:hasEmail\": {\n "+
+        "    \"@id\": \"mailto:fred@example.com\"\n "+
+        "  }\n "+
+        "}";
+                        
+        InputStream input = new ByteArrayInputStream(sampleJsonld.getBytes("UTF-8"));
+        
+        SUT = new RdfTripleImporter(RdfTripleImporter.Mode.JSONLD);
+        parseOneFile(SUT, input);
+
+        Assert.assertEquals(project.columnModel.columns.size(), 4);
+        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
+        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://www.example.org/personal_details#hasEmail");
+        Assert.assertEquals(project.columnModel.columns.get(2).getName(), "http://www.example.org/personal_details#GivenName");
+        Assert.assertEquals(project.columnModel.columns.get(3).getName(), "http://www.example.org/meeting_organization#attending");
+        Assert.assertEquals(project.rows.size(), 1);
+        Assert.assertEquals(project.rows.get(0).cells.size(), 4);
+        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://www.example.org/people#fred");
+        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "mailto:fred@example.com");
+        Assert.assertEquals(project.rows.get(0).cells.get(2).value, "Fred");
+        Assert.assertEquals(project.rows.get(0).cells.get(3).value, "http://meetings.example.com/cal#m1");
     } 
 }

main/webapp/modules/core/MOD-INF/controller.js

@@ -220,6 +220,7 @@ function registerImporting() {
   IM.registerFormat("binary/text/xml/xls/xlsx", "Excel files", "ExcelParserUI", new Packages.com.google.refine.importers.ExcelImporter());
   IM.registerFormat("text/xml/ods", "Open Document Format spreadsheets (.ods)", "ExcelParserUI", new Packages.com.google.refine.importers.OdsImporter());
   IM.registerFormat("text/xml/rdf", "RDF/XML files", "RdfTriplesParserUI", new Packages.com.google.refine.importers.RdfXmlTripleImporter());
+  IM.registerFormat("text/ld+json", "JSON-LD files", "RdfTriplesParserUI", new Packages.com.google.refine.importers.RdfJsonldTripleImporter());
   IM.registerFormat("text/json", "JSON files", "JsonParserUI", new Packages.com.google.refine.importers.JsonImporter());
   IM.registerFormat("text/marc", "MARC files", "XmlParserUI", new Packages.com.google.refine.importers.MarcImporter());
   IM.registerFormat("text/wiki", "Wikitext", "WikitextParserUI", new Packages.com.google.refine.importers.WikitextImporter());
@@ -240,6 +241,7 @@ function registerImporting() {
 
   IM.registerExtension(".json", "text/json");
   IM.registerExtension(".js", "text/json");
+  IM.registerExtension(".jsonld", "text/ld+json");
 
   IM.registerExtension(".xls", "binary/text/xml/xls/xlsx");
   IM.registerExtension(".xlsx", "binary/text/xml/xls/xlsx");
@@ -264,6 +266,7 @@ function registerImporting() {
   IM.registerMimeType("text/fixed-width", "text/line-based/fixed-width");
   
   IM.registerMimeType("text/rdf+n3", "text/rdf+n3");
+  IM.registerMimeType("text/rdf+ttl", "text/rdf+ttl");
 
   IM.registerMimeType("application/msexcel", "binary/text/xml/xls/xlsx");
   IM.registerMimeType("application/x-msexcel", "binary/text/xml/xls/xlsx");
@@ -280,6 +283,7 @@ function registerImporting() {
   IM.registerMimeType("text/json", "text/json");
 
   IM.registerMimeType("application/rdf+xml", "text/xml/rdf");
+  IM.registerMimeType("application/ld+json", "text/ld+json");
 
   IM.registerMimeType("application/marc", "text/marc");