Github user ajs6f commented on a diff in the pull request:
https://github.com/apache/jena/pull/94#discussion_r44455660
--- Diff:
jena-arq/src/main/java/org/apache/jena/sparql/core/DatasetGraphFactory.java ---
@@ -53,45 +54,38 @@ private static void copyOver(DatasetGraph dsgDest,
DatasetGraph dsgSrc)
* Create a DatasetGraph starting with a single graph.
* New graphs must be explicitly added.
*/
- public static DatasetGraph create(Graph graph)
+ public static DatasetGraph create(final Graph graph)
{
- DatasetGraph dsg2 = createMemFixed() ;
+ final DatasetGraph dsg2 = createMemFixed() ;
dsg2.setDefaultGraph(graph) ;
return dsg2 ;
}
-
+
/**
* Create a DatasetGraph which only ever has a single default graph.
*/
- public static DatasetGraph createOneGraph(Graph graph) { return new
DatasetGraphOne(graph) ; }
+ public static DatasetGraph createOneGraph(final Graph graph) { return
new DatasetGraphOne(graph) ; }
/** Interface for makign graphs when a dataset needs to add a new
graph.
* Return null for no graph created.
- */
+ */
public interface GraphMaker { public Graph create() ; }
/** A graph maker that doesn't make graphs */
- public static GraphMaker graphMakerNull = new GraphMaker() {
- @Override
- public Graph create()
- {
- return null ;
- } } ;
-
- private static GraphMaker memGraphMaker = new GraphMaker()
- {
- @Override
- public Graph create()
- {
- return GraphFactory.createDefaultGraph() ;
- }
- } ;
-
+ public static GraphMaker graphMakerNull = () -> null ;
+
+ private static GraphMaker memGraphMaker = () ->
GraphFactory.createDefaultGraph() ;
+
+ /**
+ * @return a DatasetGraph which features transactional in-memory
operation
+ */
+ public static DatasetGraph createTxMem() { return new
DatasetGraphInMemory(); }
+
--- End diff --
Changed.
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