Update Function EXECUTE_SQL

RESTAPI/Functions/EXECUTE_SQL.sql

@@ -1 +1,113 @@
-牄禗袬蒨@\蚕謨@^@
+SET PATH *LIBL ; 
+
+CREATE OR REPLACE FUNCTION RESTAPI.EXECUTE_SQL ( 
+	INAPPVER VARCHAR(10) DEFAULT  'v1'  , 
+	INAPPNAME VARCHAR(128) DEFAULT  ''  , 
+	INAPPFUNC VARCHAR(128) DEFAULT  ''  , 
+	INSUBSTITUTE VARCHAR(10240) DEFAULT  NULL  ) 
+	RETURNS CLOB(2147483647)   
+	LANGUAGE SQL 
+	SPECIFIC RESTAPI.EXECUTE_SQL 
+	NOT DETERMINISTIC 
+	MODIFIES SQL DATA 
+	CALLED ON NULL INPUT 
+	NOT FENCED 
+	SET OPTION  ALWBLK = *ALLREAD , 
+	ALWCPYDTA = *OPTIMIZE , 
+	COMMIT = *NONE , 
+	DBGVIEW = *SOURCE , 
+	DECRESULT = (31, 31, 00) , 
+	DYNDFTCOL = *NO , 
+	DYNUSRPRF = *OWNER , 
+	SRTSEQ = *HEX   
+	BEGIN 
+DECLARE SQL_STATEMENT VARCHAR ( 32000 ) DEFAULT NULL ; 
+DECLARE SQL_PARAMS VARCHAR ( 10240 ) DEFAULT NULL ; 
+DECLARE SQL_REPLACEMENT VARCHAR ( 2048 ) DEFAULT NULL ; 
+DECLARE SQL_CLOB CLOB ( 2 G ) DEFAULT NULL ; 
+DECLARE CONTINUE HANDLER FOR SQLEXCEPTION 
+BEGIN 
+DECLARE V_SQLSTATE CHAR ( 5 ) ; 
+DECLARE V_DB2_RETURN_CODE INT ; 
+DECLARE V_DB2_MESSAGE_ID CHAR ( 7 ) ; 
+DECLARE V_ERROR_MESSAGE CLOB ( 2048 ) ; 
+GET DIAGNOSTICS CONDITION 1 
+V_DB2_RETURN_CODE = DB2_RETURNED_SQLCODE , 
+V_SQLSTATE = RETURNED_SQLSTATE , 
+V_ERROR_MESSAGE = MESSAGE_TEXT , 
+V_DB2_MESSAGE_ID = DB2_MESSAGE_ID ; 
+RETURN 
+( 
+VALUES JSON_OBJECT ( 
+'success' VALUE 'false' , 'SQLInfo' VALUE JSON_OBJECT ( 
+'SQLState' VALUE V_SQLSTATE , 
+'SQLCode' VALUE V_DB2_RETURN_CODE , 
+'messageID' VALUE V_DB2_MESSAGE_ID , 
+'message' VALUE V_ERROR_MESSAGE , 
+'currentTimestamp' VALUE CURRENT_TIMESTAMP 
+) , 'SQLStatement' VALUE SQL_STATEMENT FORMAT JSON 
+) ) ; 
+END ; 
+-- Get SQL template 
+SET SQL_STATEMENT = ( 
+SELECT SQLSTMT 
+FROM RESTAPI . SQLSTMTS 
+WHERE ( APPVER , APPNAME , APPFUNC ) = ( INAPPVER , 
+INAPPNAME , INAPPFUNC ) ) ; 
+-- Normalize substitute JSON into array form 
+SET SQL_PARAMS = INSUBSTITUTE ; 
+IF SQL_PARAMS IS NOT NULL 
+AND TRIM ( SQL_PARAMS ) <> '' THEN 
+IF CISTOOLS . JSON_TYPE ( SQL_PARAMS ) <> 'array' THEN 
+SET SQL_PARAMS = JSON_ARRAY ( INSUBSTITUTE FORMAT JSON ) ; 
+END IF ; 
+END IF ; 
+-- Substitute parameters if we have both template and subs 
+IF SQL_STATEMENT IS NOT NULL 
+AND SQL_PARAMS IS NOT NULL THEN 
+FOR SELECT APPPARAM 
+FROM TABLE ( 
+RESTAPI . GET_PARAM_PLACEHOLDERS ( 
+INAPPVER , INAPPNAME , INAPPFUNC ) 
+) 
+DO 
+SET SQL_REPLACEMENT = COALESCE ( 
+JSON_VALUE ( SQL_PARAMS , '$[*].' || TRIM ( APPPARAM ) ) , 
+JSON_QUERY ( SQL_PARAMS , '$[*].' || TRIM ( APPPARAM ) ) ) ; 
+-- Figure out type of this param 
+SET SQL_STATEMENT = REPLACE ( 
+SQL_STATEMENT , '{{' || TRIM ( APPPARAM ) || '}}' , 
+IFNULL ( 
+SQL_REPLACEMENT , '{{' || TRIM ( APPPARAM ) || '}}' ) 
+) ; 
+END FOR ; 
+END IF ; 
+-- Execute dynamically 
+SET CISTOOLS . SQL_STATEMENT = SQL_STATEMENT ; 
+SET SQL_STATEMENT = 'Values ((' || SQL_STATEMENT || ')) Into ?' ; 
+PREPARE SQL_ FROM SQL_STATEMENT ; 
+EXECUTE SQL_ USING SQL_CLOB ; 
+-- After Execute Sql_ Using SQL_CLOB; 
+-- Detect if SQL_CLOB is already JSON object with success/data/result 
+IF LEFT ( LTRIM ( SQL_CLOB ) , 1 ) = '{' 
+AND ( LOCATE ( '"success"' , SQL_CLOB ) > 0 ) 
+AND ( LOCATE ( '"data"' , SQL_CLOB ) > 0 
+OR LOCATE ( '"result"' , SQL_CLOB ) > 0 
+OR LOCATE ( '"SQLInfo"' , SQL_CLOB ) > 0 ) THEN 
+-- Return raw JSON as is 
+RETURN SQL_CLOB ; 
+END IF ; 
+-- Wrap in standard envelope 
+RETURN JSON_OBJECT ( 
+'success' : 'true' , 'data' : SQL_CLOB FORMAT JSON 
+) ; 
+END  ; 
+
+GRANT EXECUTE   
+ON SPECIFIC FUNCTION RESTAPI.EXECUTE_SQL 
+TO PUBLIC ; 
+
+GRANT ALTER , EXECUTE   
+ON SPECIFIC FUNCTION RESTAPI.EXECUTE_SQL 
+TO QSECOFR WITH GRANT OPTION ; 
+