56 lines
1.6 KiB
SQL
56 lines
1.6 KiB
SQL
DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `util`.`log_cleanInstances`(
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vActionCode VARCHAR(45),
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INOUT vOldInstance JSON,
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INOUT vNewInstance JSON)
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BEGIN
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/**
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* Cleans both instances removing nulls and keys whose values are the same.
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*
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* @param vActionCode The action code {insert | delete | update}
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* @param vOldInstance JSON containing the old values
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* @param vNewInstance JSON containing the new values
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*/
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DECLARE vKeys JSON;
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DECLARE vPath VARCHAR(255);
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DECLARE vOldValue JSON;
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DECLARE vNewValue JSON;
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DECLARE vOld JSON;
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DECLARE vNew JSON;
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DECLARE i INT DEFAULT 0;
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DECLARE vCount INT;
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CASE vActionCode
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WHEN 'insert' THEN
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SET vNewInstance = json_removeNulls(vNewInstance);
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WHEN 'update' THEN
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SET vOld = '{}';
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SET vNew = '{}';
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SET vKeys = JSON_KEYS(vNewInstance);
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SET vCount = JSON_LENGTH(vKeys);
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WHILE i < vCount DO
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SET vPath = CONCAT('$.', JSON_VALUE(vKeys, CONCAT('$[',i,']')));
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SET vOldValue = JSON_EXTRACT(vOldInstance, vPath);
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SET vNewValue = JSON_EXTRACT(vNewInstance, vPath);
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IF NOT (vOldValue <=> vNewValue) THEN
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IF vOldValue IS NOT NULL AND vOldValue <> 'null' THEN
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SET vOld = JSON_SET(vOld, vPath, JSON_COMPACT(vOldValue));
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END IF;
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IF vNewValue IS NOT NULL THEN
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SET vNew = JSON_SET(vNew, vPath, JSON_COMPACT(vNewValue));
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END IF;
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END IF;
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SET i := i + 1;
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END WHILE;
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SET vOldInstance = vOld;
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SET vNewInstance = vNew;
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WHEN 'delete' THEN
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SET vOldInstance = json_removeNulls(vOldInstance);
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ELSE BEGIN END;
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END CASE;
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SET vOldInstance = log_formatDate(vOldInstance);
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SET vNewInstance = log_formatDate(vNewInstance);
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END$$
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DELIMITER ;
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