127 lines
5.0 KiB
JavaScript
127 lines
5.0 KiB
JavaScript
const utils = require('../utils');
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const trigger = {
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renameColumnTrigger: function(logger, tableName, columnName, to) {
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const triggerName = utils.generateCombinedName(
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logger,
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'autoinc_trg',
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tableName
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);
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const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
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return (
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`DECLARE ` +
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`PK_NAME VARCHAR(200); ` +
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`IS_AUTOINC NUMBER := 0; ` +
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`BEGIN` +
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` EXECUTE IMMEDIATE ('ALTER TABLE "${tableName}" RENAME COLUMN "${columnName}" TO "${to}"');` +
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` SELECT COUNT(*) INTO IS_AUTOINC from "USER_TRIGGERS" where trigger_name = '${triggerName}';` +
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` IF (IS_AUTOINC > 0) THEN` +
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` SELECT cols.column_name INTO PK_NAME` +
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` FROM all_constraints cons, all_cons_columns cols` +
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` WHERE cons.constraint_type = 'P'` +
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` AND cons.constraint_name = cols.constraint_name` +
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` AND cons.owner = cols.owner` +
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` AND cols.table_name = '${tableName}';` +
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` IF ('${to}' = PK_NAME) THEN` +
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` EXECUTE IMMEDIATE ('DROP TRIGGER "${triggerName}"');` +
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` EXECUTE IMMEDIATE ('create or replace trigger "${triggerName}"` +
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` BEFORE INSERT on "${tableName}" for each row` +
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` declare` +
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` checking number := 1;` +
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` begin` +
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` if (:new."${to}" is null) then` +
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` while checking >= 1 loop` +
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` select "${sequenceName}".nextval into :new."${to}" from dual;` +
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` select count("${to}") into checking from "${tableName}"` +
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` where "${to}" = :new."${to}";` +
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` end loop;` +
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` end if;` +
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` end;');` +
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` end if;` +
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` end if;` +
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`END;`
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);
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},
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createAutoIncrementTrigger: function(logger, tableName) {
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const triggerName = utils.generateCombinedName(
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logger,
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'autoinc_trg',
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tableName
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);
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const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
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return (
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`DECLARE ` +
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`PK_NAME VARCHAR(200); ` +
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`BEGIN` +
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` EXECUTE IMMEDIATE ('CREATE SEQUENCE "${sequenceName}"');` +
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` SELECT cols.column_name INTO PK_NAME` +
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` FROM all_constraints cons, all_cons_columns cols` +
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` WHERE cons.constraint_type = 'P'` +
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` AND cons.constraint_name = cols.constraint_name` +
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` AND cons.owner = cols.owner` +
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` AND cols.table_name = '${tableName}';` +
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` execute immediate ('create or replace trigger "${triggerName}"` +
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` BEFORE INSERT on "${tableName}"` +
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` for each row` +
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` declare` +
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` checking number := 1;` +
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` begin` +
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` if (:new."' || PK_NAME || '" is null) then` +
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` while checking >= 1 loop` +
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` select "${sequenceName}".nextval into :new."' || PK_NAME || '" from dual;` +
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` select count("' || PK_NAME || '") into checking from "${tableName}"` +
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` where "' || PK_NAME || '" = :new."' || PK_NAME || '";` +
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` end loop;` +
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` end if;` +
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` end;'); ` +
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`END;`
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);
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},
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renameTableAndAutoIncrementTrigger: function(logger, tableName, to) {
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const triggerName = utils.generateCombinedName(
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logger,
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'autoinc_trg',
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tableName
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);
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const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
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const toTriggerName = utils.generateCombinedName(logger, 'autoinc_trg', to);
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const toSequenceName = utils.generateCombinedName(logger, 'seq', to);
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return (
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`DECLARE ` +
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`PK_NAME VARCHAR(200); ` +
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`IS_AUTOINC NUMBER := 0; ` +
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`BEGIN` +
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` EXECUTE IMMEDIATE ('RENAME "${tableName}" TO "${to}"');` +
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` SELECT COUNT(*) INTO IS_AUTOINC from "USER_TRIGGERS" where trigger_name = '${triggerName}';` +
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` IF (IS_AUTOINC > 0) THEN` +
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` EXECUTE IMMEDIATE ('DROP TRIGGER "${triggerName}"');` +
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` EXECUTE IMMEDIATE ('RENAME "${sequenceName}" TO "${toSequenceName}"');` +
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` SELECT cols.column_name INTO PK_NAME` +
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` FROM all_constraints cons, all_cons_columns cols` +
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` WHERE cons.constraint_type = 'P'` +
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` AND cons.constraint_name = cols.constraint_name` +
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` AND cons.owner = cols.owner` +
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` AND cols.table_name = '${to}';` +
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` EXECUTE IMMEDIATE ('create or replace trigger "${toTriggerName}"` +
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` BEFORE INSERT on "${to}" for each row` +
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` declare` +
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` checking number := 1;` +
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` begin` +
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` if (:new."' || PK_NAME || '" is null) then` +
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` while checking >= 1 loop` +
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` select "${toSequenceName}".nextval into :new."' || PK_NAME || '" from dual;` +
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` select count("' || PK_NAME || '") into checking from "${to}"` +
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` where "' || PK_NAME || '" = :new."' || PK_NAME || '";` +
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` end loop;` +
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` end if;` +
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` end;');` +
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` end if;` +
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`END;`
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);
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},
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};
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module.exports = trigger;
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