Add missing json functions and operators

Author: Nikita Glukhov

src/backend/catalog/system_views.sql

@@ -1416,6 +1416,14 @@ LANGUAGE INTERNAL
 STRICT IMMUTABLE PARALLEL SAFE
 AS 'make_interval';
 
+CREATE OR REPLACE FUNCTION
+  json_set(json_in json, path text[] , replacement json,
+            create_if_missing boolean DEFAULT true)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_set';
+
 CREATE OR REPLACE FUNCTION
   jsonb_set(jsonb_in jsonb, path text[] , replacement jsonb,
             create_if_missing boolean DEFAULT true)
@@ -1440,6 +1448,14 @@ LANGUAGE INTERNAL
 STRICT IMMUTABLE PARALLEL SAFE
 AS 'parse_ident';
 
+CREATE OR REPLACE FUNCTION
+  json_insert(json_in json, path text[] , replacement json,
+            insert_after boolean DEFAULT false)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_insert';
+
 CREATE OR REPLACE FUNCTION
   jsonb_insert(jsonb_in jsonb, path text[] , replacement jsonb,
             insert_after boolean DEFAULT false)
@@ -1528,6 +1544,88 @@ LANGUAGE INTERNAL
 STRICT STABLE PARALLEL SAFE
 AS 'jsonb_path_query_first_tz';
 
+
+CREATE OR REPLACE FUNCTION
+  json_path_exists(target json, path jsonpath, vars json DEFAULT '{}',
+                    silent boolean DEFAULT false)
+RETURNS boolean
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_path_exists';
+
+CREATE OR REPLACE FUNCTION
+  json_path_match(target json, path jsonpath, vars json DEFAULT '{}',
+                   silent boolean DEFAULT false)
+RETURNS boolean
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_path_match';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query(target json, path jsonpath, vars json DEFAULT '{}',
+                   silent boolean DEFAULT false)
+RETURNS SETOF json
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_path_query';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query_array(target json, path jsonpath, vars json DEFAULT '{}',
+                         silent boolean DEFAULT false)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_path_query_array';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query_first(target json, path jsonpath, vars json DEFAULT '{}',
+                         silent boolean DEFAULT false)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT IMMUTABLE PARALLEL SAFE
+AS 'json_path_query_first';
+
+CREATE OR REPLACE FUNCTION
+  json_path_exists_tz(target json, path jsonpath, vars json DEFAULT '{}',
+                    silent boolean DEFAULT false)
+RETURNS boolean
+LANGUAGE INTERNAL
+STRICT STABLE PARALLEL SAFE
+AS 'json_path_exists_tz';
+
+CREATE OR REPLACE FUNCTION
+  json_path_match_tz(target json, path jsonpath, vars json DEFAULT '{}',
+                   silent boolean DEFAULT false)
+RETURNS boolean
+LANGUAGE INTERNAL
+STRICT STABLE PARALLEL SAFE
+AS 'json_path_match_tz';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query_tz(target json, path jsonpath, vars json DEFAULT '{}',
+                   silent boolean DEFAULT false)
+RETURNS SETOF json
+LANGUAGE INTERNAL
+STRICT STABLE PARALLEL SAFE
+AS 'json_path_query_tz';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query_array_tz(target json, path jsonpath, vars json DEFAULT '{}',
+                         silent boolean DEFAULT false)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT STABLE PARALLEL SAFE
+AS 'json_path_query_array_tz';
+
+CREATE OR REPLACE FUNCTION
+  json_path_query_first_tz(target json, path jsonpath, vars json DEFAULT '{}',
+                         silent boolean DEFAULT false)
+RETURNS json
+LANGUAGE INTERNAL
+STRICT STABLE PARALLEL SAFE
+AS 'json_path_query_first_tz';
+
+
 -- default normalization form is NFC, per SQL standard
 CREATE OR REPLACE FUNCTION
   "normalize"(text, text DEFAULT 'NFC')

src/backend/utils/adt/Makefile

@@ -46,6 +46,8 @@ OBJS = \
 	int8.o \
 	json.o \
 	json_generic.o \
+	json_gin.o \
+	json_op.o \
 	jsonb.o \
 	jsonb_gin.o \
 	jsonb_op.o \

src/backend/utils/adt/json_gin.c

@@ -0,0 +1,26 @@
+/*
+ * json_gin.c
+ *
+ * Portions Copyright (c) 2016, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *	  src/backend/utils/adt/json_gin.c
+ *
+ */
+
+#define gin_compare_jsonb				gin_compare_json
+#define gin_extract_jsonb				gin_extract_json
+#define gin_extract_jsonb_query			gin_extract_json_query
+#define gin_consistent_jsonb			gin_consistent_json
+#define gin_triconsistent_jsonb			gin_triconsistent_json
+#define gin_extract_jsonb_path			gin_extract_json_path
+#define gin_extract_jsonb_query_path	gin_extract_json_query_path
+#define gin_consistent_jsonb_path		gin_consistent_json_path
+#define gin_triconsistent_jsonb_path	gin_triconsistent_json_path
+
+#define JsonxContainerOps				(&jsontContainerOps)
+#define JsonxGetDatum(json)	JsontGetDatum(json)
+
+#include "utils/json_generic.h"
+
+#include "jsonb_gin.c"

src/backend/utils/adt/json_op.c

@@ -0,0 +1,31 @@
+/*
+ * json_op.c
+ *
+ * Portions Copyright (c) 2016, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *	  src/backend/utils/adt/json_op.c
+ *
+ */
+
+#define jsonb_exists		json_exists
+#define jsonb_exists_any	json_exists_any
+#define jsonb_exists_all	json_exists_all
+#define jsonb_contains		json_contains
+#define jsonb_contained		json_contained
+#define jsonb_ne			json_ne
+#define jsonb_lt			json_lt
+#define jsonb_gt			json_gt
+#define jsonb_le			json_le
+#define jsonb_ge			json_ge
+#define jsonb_eq			json_eq
+#define jsonb_cmp			json_cmp
+#define jsonb_hash			json_hash
+#define jsonb_hash_extended	json_hash_extended
+
+#define JsonxContainerOps			(&jsontContainerOps)
+#define JsonxGetDatum(json)	JsontGetDatum(json)
+
+#include "utils/json_generic.h"
+
+#include "jsonb_op.c"