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214 lines
9.6 KiB
PHP
214 lines
9.6 KiB
PHP
<?php // $Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.com //
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// //
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// Copyright (C) 2001-3001 Martin Dougiamas http://dougiamas.com //
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// (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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/// This class generate SQL code to be used against MySQL
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/// It extends XMLDBgenerator so everything can be
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/// overriden as needed to generate correct SQL.
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class XMLDBmysql extends XMLDBGenerator {
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/// Only set values that are different from the defaults present in XMLDBgenerator
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var $quote_string = '`'; // String used to quote names
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var $default_for_char = ''; // To define the default to set for NOT NULLs CHARs without default (null=do nothing)
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var $primary_key_name = 'primary'; //To force primary key names to one string (null=no force)
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var $foreign_keys = false; // Does the generator build foreign keys
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var $primary_index = false;// Does the generator need to build one index for primary keys
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var $unique_index = false; // Does the generator need to build one index for unique keys
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var $sequence_extra_code = false; //Does the generator need to add extra code to generate the sequence fields
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var $sequence_name = 'auto_increment'; //Particular name for inline sequences in this generator
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var $enum_extra_code = false; //Does the generator need to add extra code to generate code for the enums in the table
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/**
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* Creates one new XMLDBmysql
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*/
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function XMLDBmysql() {
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parent::XMLDBGenerator();
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global $CFG;
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$this->prefix = '';
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$this->reserved_words = $this->getReservedWords();
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}
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/**
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* Given one XMLDB Type, lenght and decimals, returns the DB proper SQL type
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*/
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function getTypeSQL ($xmldb_type, $xmldb_length=null, $xmldb_decimals=null) {
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switch ($xmldb_type) {
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case XMLDB_TYPE_INTEGER: // From http://mysql.com/doc/refman/5.0/en/numeric-types.html!
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if (empty($xmldb_length)) {
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$xmldb_length = 10;
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}
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if ($xmldb_length > 9) {
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$dbtype = 'BIGINT';
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} else if ($xmldb_length > 6) {
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$dbtype = 'INT';
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} else if ($xmldb_length > 4) {
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$dbtype = 'MEDIUMINT';
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} else if ($xmldb_length > 2) {
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$dbtype = 'SMALLINT';
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} else {
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$dbtype = 'TINYINT';
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}
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$dbtype .= '(' . $xmldb_length . ')';
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break;
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case XMLDB_TYPE_NUMBER:
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$dbtype = $this->number_type;
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if (!empty($xmldb_length)) {
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$dbtype .= '(' . $xmldb_length;
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if (!empty($xmldb_decimals)) {
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$dbtype .= ',' . $xmldb_decimals;
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}
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$dbtype .= ')';
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}
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break;
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case XMLDB_TYPE_FLOAT:
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$dbtype = 'FLOAT';
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if (!empty($xmldb_length)) {
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$dbtype .= '(' . $xmldb_length;
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if (!empty($xmldb_decimals)) {
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$dbtype .= ',' . $xmldb_decimals;
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}
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$dbtype .= ')';
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}
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break;
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case XMLDB_TYPE_CHAR:
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$dbtype = 'VARCHAR';
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if (empty($xmldb_length)) {
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$xmldb_length='255';
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}
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$dbtype .= '(' . $xmldb_length . ')';
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break;
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case XMLDB_TYPE_TEXT:
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if (empty($xmldb_length)) {
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$xmldb_length = 'small';
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}
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if ($xmldb_length = 'small') {
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$dbtype = 'TEXT';
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} else if ($xmldb_length = 'medium') {
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$dbtype = 'MEDIUMTEXT';
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} else {
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$dbtype = 'BIGTEXT';
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}
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break;
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case XMLDB_TYPE_BINARY:
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if (empty($xmldb_length)) {
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$xmldb_length = 'small';
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}
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if ($xmldb_length = 'small') {
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$dbtype = 'BLOB';
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} else if ($xmldb_length = 'medium') {
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$dbtype = 'MEDIUMBLOB';
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} else {
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$dbtype = 'BIGBLOB';
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}
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break;
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case XMLDB_TYPE_DATETIME:
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$dbtype = 'DATETIME';
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}
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return $dbtype;
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}
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/**
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* Given one XMLDB Field, return its enum SQL
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*/
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function getEnumSQL ($xmldb_field) {
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return 'enum(' . implode(', ', $xmldb_field->getEnumValues()) . ')';
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}
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/**
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* Returns the code needed to add one comment to the table
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*/
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function getCommentSQL ($xmldb_table) {
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$comment = '';
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if ($xmldb_table->getComment()) {
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$comment .= " COMMENT='" . substr($xmldb_table->getComment(), 0, 250) . "'";
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}
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return $comment;
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}
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/**
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* Returns an array of reserved words (lowercase) for this DB
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*/
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function getReservedWords() {
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/// This file contains the reserved words for MySQL databases
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/// from http://dev.mysql.com/doc/refman/5.0/en/reserved-words.html
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$reserved_words = array (
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'add', 'all', 'alter', 'analyze', 'and', 'as', 'asc',
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'asensitive', 'before', 'between', 'bigint', 'binary',
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'blob', 'both', 'by', 'call', 'cascade', 'case', 'change',
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'char', 'character', 'check', 'collate', 'column',
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'condition', 'connection', 'constraint', 'continue',
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'convert', 'create', 'cross', 'current_date', 'current_time',
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'current_timestamp', 'current_user', 'cursor', 'database',
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'databases', 'day_hour', 'day_microsecond',
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'day_minute', 'day_second', 'dec', 'decimal', 'declare',
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'default', 'delayed', 'delete', 'desc', 'describe',
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'deterministic', 'distinct', 'distinctrow', 'div', 'double',
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'drop', 'dual', 'each', 'else', 'elseif', 'enclosed', 'escaped',
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'exists', 'exit', 'explain', 'false', 'fetch', 'float', 'float4',
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'float8', 'for', 'force', 'foreign', 'from', 'fulltext', 'grant',
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'group', 'having', 'high_priority', 'hour_microsecond',
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'hour_minute', 'hour_second', 'if', 'ignore', 'in', 'index',
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'infile', 'inner', 'inout', 'insensitive', 'insert', 'int', 'int1',
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'int2', 'int3', 'int4', 'int8', 'integer', 'interval', 'into', 'is',
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'iterate', 'join', 'key', 'keys', 'kill', 'leading', 'leave', 'left',
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'like', 'limit', 'lines', 'load', 'localtime', 'localtimestamp',
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'lock', 'long', 'longblob', 'longtext', 'loop', 'low_priority',
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'match', 'mediumblob', 'mediumint', 'mediumtext',
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'middleint', 'minute_microsecond', 'minute_second',
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'mod', 'modifies', 'natural', 'not', 'no_write_to_binlog',
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'null', 'numeric', 'on', 'optimize', 'option', 'optionally',
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'or', 'order', 'out', 'outer', 'outfile', 'precision', 'primary',
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'procedure', 'purge', 'raid0', 'read', 'reads', 'real',
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'references', 'regexp', 'release', 'rename', 'repeat', 'replace',
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'require', 'restrict', 'return', 'revoke', 'right', 'rlike', 'schema',
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'schemas', 'second_microsecond', 'select', 'sensitive',
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'separator', 'set', 'show', 'smallint', 'soname', 'spatial',
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'specific', 'sql', 'sqlexception', 'sqlstate', 'sqlwarning',
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'sql_big_result', 'sql_calc_found_rows', 'sql_small_result',
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'ssl', 'starting', 'straight_join', 'table', 'terminated', 'then',
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'tinyblob', 'tinyint', 'tinytext', 'to', 'trailing', 'trigger', 'true',
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'undo', 'union', 'unique', 'unlock', 'unsigned', 'update',
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'upgrade', 'usage', 'use', 'using', 'utc_date', 'utc_time',
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'utc_timestamp', 'values', 'varbinary', 'varchar', 'varcharacter',
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'varying', 'when', 'where', 'while', 'with', 'write', 'x509',
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'xor', 'year_month', 'zerofill'
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);
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return $reserved_words;
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}
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}
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?>
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