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Filename : install_rewriter.sql
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/* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

CREATE DATABASE IF NOT EXISTS query_rewrite;

CREATE TABLE IF NOT EXISTS query_rewrite.rewrite_rules (
  id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
  pattern VARCHAR(10000) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
  pattern_database VARCHAR(20) CHARACTER SET utf8 COLLATE utf8_bin,
  replacement VARCHAR(10000) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
  enabled ENUM('YES', 'NO') CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
    DEFAULT 'YES',
  message VARCHAR(1000) CHARACTER SET utf8 COLLATE utf8_bin,
  pattern_digest VARCHAR(32),
  normalized_pattern VARCHAR(100)
) DEFAULT CHARSET = utf8 ENGINE = INNODB;

INSTALL PLUGIN rewriter SONAME 'rewriter.so';
CREATE FUNCTION load_rewrite_rules RETURNS STRING
SONAME 'rewriter.so';

DELIMITER //

CREATE PROCEDURE query_rewrite.flush_rewrite_rules()
BEGIN
  DECLARE message_text VARCHAR(100);
  COMMIT;
  SELECT load_rewrite_rules() INTO message_text;
  RESET QUERY CACHE;
  IF NOT message_text IS NULL THEN
    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = message_text;
  END IF;
END //

DELIMITER ;

RESET QUERY CACHE;