Rename functions and files

src/backend/distributed/planner/multi_router_planner.c

@@ -34,9 +34,9 @@
 #include "distributed/multi_logical_optimizer.h"
 #include "distributed/multi_physical_planner.h"
 #include "distributed/multi_router_planner.h"
-#include "distributed/multi_planner_utils.h"
 #include "distributed/listutils.h"
 #include "distributed/citus_ruleutils.h"
+#include "distributed/relation_restriction_equivalence.h"
 #include "distributed/relay_utility.h"
 #include "distributed/resource_lock.h"
 #include "distributed/shardinterval_utils.h"
@@ -280,7 +280,7 @@ CreateInsertSelectRouterPlan(Query *originalQuery,
 	RelationRestrictionContext *relationRestrictionContext =
 		plannerRestrictionContext->relationRestrictionContext;
 	bool allReferenceTables = relationRestrictionContext->allReferenceTables;
-	bool allRelationsJoinedOnPartitionKey = false;
+	bool restrictionEquivalenceForPartitionKeys = false;
 
 	multiPlan->operation = originalQuery->commandType;
 
@@ -296,8 +296,8 @@ CreateInsertSelectRouterPlan(Query *originalQuery,
 		return multiPlan;
 	}
 
-	allRelationsJoinedOnPartitionKey =
+	restrictionEquivalenceForPartitionKeys =
-		AllRelationsJoinedOnPartitionKey(plannerRestrictionContext);
+		RestrictionEquivalenceForPartitionKeys(plannerRestrictionContext);
 
 	/*
 	 * Plan select query for each shard in the target table. Do so by replacing the
@@ -317,7 +317,7 @@ CreateInsertSelectRouterPlan(Query *originalQuery,
 		modifyTask = RouterModifyTaskForShardInterval(originalQuery, targetShardInterval,
 													  relationRestrictionContext,
 													  taskIdIndex,
-													  allRelationsJoinedOnPartitionKey);
+													  restrictionEquivalenceForPartitionKeys);
 
 		/* add the task if it could be created */
 		if (modifyTask != NULL)

src/backend/distributed/planner/relation_restriction_equivalence.c

@@ -1,5 +1,5 @@
 /*
- * multi_planner_utils.c
+ * relation_restriction_equivalence.c
  *
  * This file contains functions helper functions for planning
  * queries with colocated tables and subqueries.
@@ -10,10 +10,10 @@
  */
 #include "postgres.h"
 
-#include "distributed/multi_planner_utils.h"
 #include "distributed/multi_planner.h"
 #include "distributed/multi_logical_planner.h"
 #include "distributed/pg_dist_partition.h"
+#include "distributed/relation_restriction_equivalence.h"
 #include "nodes/nodeFuncs.h"
 #include "nodes/pg_list.h"
 #include "nodes/primnodes.h"
@@ -92,7 +92,7 @@ static void ListConcatUniqueAttributeClassMemberLists(AttributeEquivalenceClass
 													  secondClass);
 
 /*
- * AllRelationsJoinedOnPartitionKey aims to deduce whether each of the RTE_RELATION
+ * RestrictionEquivalenceForPartitionKeys aims to deduce whether each of the RTE_RELATION
  * is joined with at least one another RTE_RELATION on their partition keys. If each
  * RTE_RELATION follows the above rule, we can conclude that all RTE_RELATIONs are
  * joined on their partition keys.
@@ -123,7 +123,8 @@ static void ListConcatUniqueAttributeClassMemberLists(AttributeEquivalenceClass
  * and GenerateAttributeEquivalencesForJoinRestrictions()
  */
 bool
-AllRelationsJoinedOnPartitionKey(PlannerRestrictionContext *plannerRestrictionContext)
+RestrictionEquivalenceForPartitionKeys(
+	PlannerRestrictionContext *plannerRestrictionContext)
 {
 	RelationRestrictionContext *restrictionContext =
 		plannerRestrictionContext->relationRestrictionContext;

src/include/distributed/multi_planner_utils.h

@@ -1,22 +0,0 @@
-/*
- * multi_planner_utils.h
- *
- * This file contains functions helper functions for planning
- * queries with colocated tables and subqueries.
- *
- * Copyright (c) 2017-2017, Citus Data, Inc.
- *
- *-------------------------------------------------------------------------
- */
-
-#ifndef MULTI_PLANNER_UTILS_H
-#define MULTI_PLANNER_UTILS_H
-
-#include "distributed/multi_planner.h"
-
-
-extern bool AllRelationsJoinedOnPartitionKey(PlannerRestrictionContext *
-											 plannerRestrictionContext);
-
-
-#endif /* MULTI_PLANNER_UTILS_H */

src/include/distributed/relation_restriction_equivalence.h

@@ -0,0 +1,22 @@
+/*
+ * relation_restriction_equivalence.h
+ *
+ * This file contains functions helper functions for planning
+ * queries with colocated tables and subqueries.
+ *
+ * Copyright (c) 2017-2017, Citus Data, Inc.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef RELATION_RESTRICTION_EQUIVALENCE_H
+#define RELATION_RESTRICTION_EQUIVALENCE_H
+
+#include "distributed/multi_planner.h"
+
+
+extern bool RestrictionEquivalenceForPartitionKeys(PlannerRestrictionContext *
+												   plannerRestrictionContext);
+
+
+#endif /* RELATION_RESTRICTION_EQUIVALENCE_H */