Fix hints for join

Join parallelmatch and unsortedoutput options, read as hints, were being
read incorrectly, hence ignored.

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>

thorlcr/activities/hashdistrib/thhashdistribslave.cpp

@@ -2314,8 +2314,8 @@ public:
             {
                 case TAKhashjoin:
                     {
-                        bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]")!=0;
-                        bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]")!=0;
+                        bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]/@value")!=0;
+                        bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]/@value")!=0;
                         joinhelper.setown(createJoinHelper(joinargs, "HASHJOIN", container.queryId(), queryRowAllocator(),hintparallelmatch,hintunsortedoutput));
                     }
                     break;

thorlcr/activities/join/thjoinslave.cpp

@@ -243,8 +243,8 @@ public:
         if (denorm)
             joinhelper.setown(createDenormalizeHelper(helperdn, activityName, container.getKind(), container.queryId(), queryRowAllocator()));
         else {
-            bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]")!=0;
-            bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]")!=0;
+            bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]/@value")!=0;
+            bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]/@value")!=0;
             joinhelper.setown(createJoinHelper(helperjn, activityName, container.queryId(), queryRowAllocator(),hintparallelmatch,hintunsortedoutput));
         }
     }

thorlcr/activities/selfjoin/thselfjoinslave.cpp

@@ -155,8 +155,8 @@ public:
         input = inputs.item(0);
         startInput(input);
         dataLinkStart("SELFJOIN", container.queryId());
-        bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]")!=0;
-        bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]")!=0;
+        bool hintparallelmatch = container.queryXGMML().getPropInt("hint[@name=\"parallel_match\"]/@value")!=0;
+        bool hintunsortedoutput = container.queryXGMML().getPropInt("hint[@name=\"unsorted_output\"]/@value")!=0;
 
         if (helper->getJoinFlags()&JFlimitedprefixjoin) {
             CriticalBlock b(joinHelperCrit);