SQL++ support in AsterixDB:
1. implemented SQL++ expression to logical plan translator;
2. refactored REST API to be agnostic of query languages;
3. disabled fuzzy join queries for SQL++ runtime tests;
4. fixed several rewriting rules.

Change-Id: I82919c4527b304325059519d819a2c30cf2902a9
Reviewed-on: https://asterix-gerrit.ics.uci.edu/479
Reviewed-by: Till Westmann <tillw@apache.org>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
diff --git a/asterix-app/src/test/resources/optimizerts/results/disjunction-to-join-delete-3.plan b/asterix-app/src/test/resources/optimizerts/results/disjunction-to-join-delete-3.plan
index 55fc23c..37ccaf2 100644
--- a/asterix-app/src/test/resources/optimizerts/results/disjunction-to-join-delete-3.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/disjunction-to-join-delete-3.plan
@@ -9,20 +9,18 @@
                 -- INSERT_DELETE  |PARTITIONED|
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                     -- MATERIALIZE  |PARTITIONED|
-                      -- HASH_PARTITION_EXCHANGE [$$12]  |PARTITIONED|
+                      -- HASH_PARTITION_EXCHANGE [$$10]  |PARTITIONED|
                         -- ASSIGN  |PARTITIONED|
                           -- STREAM_PROJECT  |PARTITIONED|
-                            -- ASSIGN  |PARTITIONED|
-                              -- STREAM_PROJECT  |PARTITIONED|
-                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                  -- HYBRID_HASH_JOIN [$$15][$$13]  |PARTITIONED|
-                                    -- HASH_PARTITION_EXCHANGE [$$15]  |PARTITIONED|
-                                      -- UNNEST  |UNPARTITIONED|
-                                        -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
-                                    -- HASH_PARTITION_EXCHANGE [$$13]  |PARTITIONED|
-                                      -- STREAM_PROJECT  |PARTITIONED|
-                                        -- ASSIGN  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- HYBRID_HASH_JOIN [$$11][$$9]  |PARTITIONED|
+                                -- HASH_PARTITION_EXCHANGE [$$11]  |PARTITIONED|
+                                  -- UNNEST  |UNPARTITIONED|
+                                    -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
+                                -- HASH_PARTITION_EXCHANGE [$$9]  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ASSIGN  |PARTITIONED|
+                                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                        -- DATASOURCE_SCAN  |PARTITIONED|
                                           -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                            -- DATASOURCE_SCAN  |PARTITIONED|
-                                              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|