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bpmm02_udf_next_signer.txt

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+DELIMITER //
+
+CREATE OR REPLACE FUNCTION bpmm02_udf_next_signer(
+  p_uuid VARCHAR(100),
+  p_source_pk_value VARCHAR(100),  -- 原單單號
+  p_id_next INT
+)
+/*
+  Function   : 取得下一關的人員列表
+  Description: 
+  Build Date : 2022/11/27
+  
+  Modify History
+    Item Who        Date       Modify Docs
+    ==== ========== ========== ================================================
+    1    Michael    2022/11/27 Init 
+*/
+RETURNS TEXT
+BEGIN
+  DECLARE v_imax INT;
+  DECLARE v_imin INT;
+  DECLARE v_inow INT;
+  DECLARE v_signerid VARCHAR(20);
+  DECLARE v_all_signers TEXT;
+  DECLARE v_lastsep VARCHAR(1);
+  DECLARE v_rowid INT;
+  
+  -- 臨時表用於存儲簽核人
+  DROP TEMPORARY TABLE IF EXISTS temp_signers;
+  CREATE TEMPORARY TABLE temp_signers (
+    signerid VARCHAR(100),
+    rowid INT AUTO_INCREMENT PRIMARY KEY
+  );
+  
+  -- 以請假單為例(由 tag 轉 uuid)
+  IF LENGTH(p_uuid) < 20 THEN
+    SELECT flow_id INTO p_uuid FROM bpm_list WHERE functiontag = p_uuid;
+  END IF;
+  
+  -- 取得下一關的人
+  INSERT INTO temp_signers (signerid)
+  SELECT signerid FROM bpm_flow_sign 
+  WHERE flow_id = p_uuid AND sourceid = p_source_pk_value AND flow_level = p_id_next;
+  
+  SELECT MAX(rowid), MIN(rowid) INTO v_imax, v_imin FROM temp_signers;
+  SET v_signerid = '';  
+  SET v_all_signers = '';
+  
+  WHILE v_imin <= v_imax DO
+    SELECT signerid INTO v_signerid FROM temp_signers WHERE rowid = v_imin;
+    IF v_imin = v_imax THEN 
+      SET v_lastsep = ''; 
+    ELSE 
+      SET v_lastsep = ','; 
+    END IF;
+    
+    SET v_all_signers = CONCAT(v_all_signers, v_signerid, v_lastsep);
+    
+    SELECT MIN(rowid) INTO v_imin FROM temp_signers WHERE rowid > v_imin;
+  END WHILE;
+  
+  -- 清理臨時表
+  DROP TEMPORARY TABLE IF EXISTS temp_signers;
+  
+  RETURN v_all_signers;
+END //
+
+DELIMITER ;