Improved rule matching for indexed NL joins using primary btree indexes (if hint was given). Fixed a few bugs in the access method rewrite rule. Added tests to guard against regressions.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@855 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-app/src/test/resources/optimizerts/results/btree-index-join/primary-equi-join-multipred.plan b/asterix-app/src/test/resources/optimizerts/results/btree-index-join/primary-equi-join-multipred.plan
new file mode 100644
index 0000000..8cadace
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/btree-index-join/primary-equi-join-multipred.plan
@@ -0,0 +1,16 @@
+-- SINK_WRITE  |PARTITIONED|
+  -- RANDOM_MERGE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- STREAM_SELECT  |LOCAL|
+          -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+            -- BTREE_SEARCH  |UNPARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |LOCAL|
+                -- STABLE_SORT [$$15(ASC)]  |LOCAL|
+                  -- HASH_PARTITION_EXCHANGE [$$15]  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- DATASOURCE_SCAN  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/optimizerts/results/btree-index-join/secondary-equi-join-multipred.plan b/asterix-app/src/test/resources/optimizerts/results/btree-index-join/secondary-equi-join-multipred.plan
new file mode 100644
index 0000000..0edd774
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/btree-index-join/secondary-equi-join-multipred.plan
@@ -0,0 +1,19 @@
+-- SINK_WRITE  |PARTITIONED|
+  -- RANDOM_MERGE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- STREAM_SELECT  |LOCAL|
+          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+            -- BTREE_SEARCH  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |LOCAL|
+                -- STABLE_SORT [$$24(ASC)]  |LOCAL|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                        -- BTREE_SEARCH  |PARTITIONED|
+                          -- BROADCAST_EXCHANGE  |PARTITIONED|
+                            -- ASSIGN  |PARTITIONED|
+                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                -- DATASOURCE_SCAN  |PARTITIONED|
+                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                    -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/scan-delete-rtree-secondary-index.plan b/asterix-app/src/test/resources/optimizerts/results/scan-delete-rtree-secondary-index.plan
index 3961d95..214cf13 100644
--- a/asterix-app/src/test/resources/optimizerts/results/scan-delete-rtree-secondary-index.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/scan-delete-rtree-secondary-index.plan
@@ -2,7 +2,7 @@
   -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
     -- INDEX_INSERT_DELETE  |UNPARTITIONED|
       -- ONE_TO_ONE_EXCHANGE  |LOCAL|
-        -- STABLE_SORT [$$24(ASC), $$25(ASC), $$26(ASC), $$27(ASC)]  |LOCAL|
+        -- STABLE_SORT [$$27(ASC), $$28(ASC), $$29(ASC), $$30(ASC)]  |LOCAL|
           -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
             -- ASSIGN  |UNPARTITIONED|
               -- ASSIGN  |UNPARTITIONED|
@@ -14,8 +14,8 @@
                           -- ASSIGN  |PARTITIONED|
                             -- STREAM_PROJECT  |PARTITIONED|
                               -- ASSIGN  |PARTITIONED|
-                                -- STREAM_SELECT  |PARTITIONED|
-                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                    -- DATASOURCE_SCAN  |PARTITIONED|
-                                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- BTREE_SEARCH  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- ASSIGN  |PARTITIONED|
                                         -- EMPTY_TUPLE_SOURCE  |PARTITIONED|