Github user ansell commented on a diff in the pull request:
https://github.com/apache/marmotta/pull/12#discussion_r31883190
--- Diff:
commons/marmotta-sesame-tools/marmotta-rio-api/src/main/java/org/apache/marmotta/commons/sesame/rio/rdfhdt/RDFHDTFormat.java
---
@@ -0,0 +1,20 @@
+package org.apache.marmotta.commons.sesame.rio.rdfhdt;
+
+import java.util.Arrays;
+
+import org.openrdf.rio.RDFFormat;
+
+/**
+ * HDT (Header, Dictionary, Triples) is a compact data structure and binary
+ * serialization format for RDF that keeps big datasets compressed to save
space
+ * while maintaining search and browse operations without prior
decompression.
+ * <p/>
+ * Author: Junyue Wang
+ */
+public class RDFHDTFormat {
+
+ public static final RDFFormat FORMAT = new RDFFormat("RDFHDT",
+ Arrays.asList("application/rdf+hdt"), null,
Arrays.asList("hdt"),
+ false, false);
--- End diff --
Both of the false values on this line should be true, as RDF/HDT supports
both Graphs (Context in Sesame terminology) and Namespaces.
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