Add draft for bug fix for list-fix-paths #686

Author: TobiasNx

metafix/src/main/java/org/metafacture/metafix/FindFixPaths.java

@@ -25,8 +25,11 @@
 import org.metafacture.framework.annotations.In;
 import org.metafacture.framework.annotations.Out;
 import org.metafacture.framework.helpers.DefaultStreamPipe;
+import org.metafacture.mangling.DuplicateObjectFilter;
 import org.metafacture.mangling.StreamFlattener;
 import org.metafacture.triples.StreamToTriples;
+import org.metafacture.triples.TripleSort;
+import org.metafacture.triples.AbstractTripleSort.Compare;
 import org.metafacture.triples.TripleFilter;
 
 import java.io.IOException;
@@ -67,11 +70,15 @@ public FindFixPaths(final String objectPattern) {
     protected void onSetReceiver() {
         final TripleFilter tripleFilter = new TripleFilter();
         tripleFilter.setObjectPattern(objectPattern);
+        TripleSort tripleSort = new TripleSort();
+        tripleSort.setBy(Compare.PREDICATE);
         fix
                 .setReceiver(new StreamFlattener())
                 .setReceiver(new StreamToTriples())
                 .setReceiver(tripleFilter)
+                .setReveiver(tripleSort)
                 .setReceiver(new ObjectTemplate<>("${p}\t|\t${o}"))
+                .setReceiver(new DuplicateObjectFilter<>())
                 .setReceiver(getReceiver());
     }