Your IP : 216.73.216.108
<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2007 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks 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; either version 2 of the License, or
# (at your option) any later version.
#
# Clearbricks 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 Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
class mysqlSchema extends dbSchema implements i_dbSchema
{
public function dbt2udt($type,&$len,&$default)
{
$type = parent::dbt2udt($type,$len,$default);
switch ($type)
{
case 'float':
return 'real';
case 'double':
return 'float';
case 'datetime':
# DATETIME real type is TIMESTAMP
if ($default == "'1970-01-01 00:00:00'") {
# Bad hack
$default = 'now()';
}
return 'timestamp';
case 'integer':
if ($len == 11) { $len = 0; }
break;
case 'bigint':
if ($len == 20) { $len = 0; }
break;
case 'tinyint':
case 'smallint':
if ($len == 6) { $len = 0; }
return 'smallint';
case 'numeric':
$len = 0;
break;
case 'tinytext':
case 'longtext':
return 'text';
}
return $type;
}
public function udt2dbt($type,&$len,&$default)
{
$type = parent::udt2dbt($type,$len,$default);
switch ($type)
{
case 'real':
return 'float';
case 'float':
return 'double';
case 'timestamp':
if ($default == 'now()') {
# MySQL does not support now() default value...
$default = "'1970-01-01 00:00:00'";
}
return 'datetime';
case 'text':
$len = 0;
return 'longtext';
}
return $type;
}
public function db_get_tables()
{
$sql = 'SHOW TABLES';
$rs = $this->con->select($sql);
$res = array();
while ($rs->fetch()) {
$res[] = $rs->f(0);
}
return $res;
}
public function db_get_columns($table)
{
$sql = 'SHOW COLUMNS FROM '.$this->con->escapeSystem($table);
$rs = $this->con->select($sql);
$res = array();
while ($rs->fetch())
{
$field = trim($rs->f('Field'));
$type = trim($rs->f('Type'));
$null = strtolower($rs->f('Null')) == 'yes';
$default = $rs->f('Default');
$len = null;
if (preg_match('/^(.+?)\(([\d,]+)\)$/si',$type,$m)) {
$type = $m[1];
$len = (integer) $m[2];
}
if ($default != '' && !is_numeric($default)) {
$default = "'".$default."'";
}
$res[$field] = array(
'type' => $type,
'len' => $len,
'null' => $null,
'default' => $default
);
}
return $res;
}
public function db_get_keys($table)
{
$sql = 'SHOW INDEX FROM '.$this->con->escapeSystem($table);
$rs = $this->con->select($sql);
$t = array();
$res = array();
while ($rs->fetch())
{
$key_name = $rs->f('Key_name');
$unique = $rs->f('Non_unique') == 0;
$seq = $rs->f('Seq_in_index');
$col_name = $rs->f('Column_name');
if ($key_name == 'PRIMARY' || $unique) {
$t[$key_name]['cols'][$seq] = $col_name;
$t[$key_name]['unique'] = $unique;
}
}
foreach ($t as $name => $idx)
{
ksort($idx['cols']);
$res[] = array(
'name' => $name,
'primary' => $name == 'PRIMARY',
'unique' => $idx['unique'],
'cols' => array_values($idx['cols'])
);
}
return $res;
}
public function db_get_indexes($table)
{
$sql = 'SHOW INDEX FROM '.$this->con->escapeSystem($table);
$rs = $this->con->select($sql);
$t = array();
$res = array();
while ($rs->fetch())
{
$key_name = $rs->f('Key_name');
$unique = $rs->f('Non_unique') == 0;
$seq = $rs->f('Seq_in_index');
$col_name = $rs->f('Column_name');
$type = $rs->f('Index_type');
if ($key_name != 'PRIMARY' && !$unique) {
$t[$key_name]['cols'][$seq] = $col_name;
$t[$key_name]['type'] = $type;
}
}
foreach ($t as $name => $idx)
{
ksort($idx['cols']);
$res[] = array(
'name' => $name,
'type' => $idx['type'],
'cols' => $idx['cols']
);
}
return $res;
}
public function db_get_references($table)
{
$sql = 'SHOW CREATE TABLE '.$this->con->escapeSystem($table);
$rs = $this->con->select($sql);
$s = $rs->f(1);
$res = array();
$n = preg_match_all('/^\s*CONSTRAINT\s+`(.+?)`\s+FOREIGN\s+KEY\s+\((.+?)\)\s+REFERENCES\s+`(.+?)`\s+\((.+?)\)(.*?)$/msi',$s,$match);
if ($n > 0)
{
foreach ($match[1] as $i => $name)
{
# Columns transformation
$t_cols = str_replace('`','',$match[2][$i]);
$t_cols = explode(',',$t_cols);
$r_cols = str_replace('`','',$match[4][$i]);
$r_cols = explode(',',$r_cols);
# ON UPDATE|DELETE
$on = trim($match[5][$i],', ');
$on_delete = null;
$on_update = null;
if ($on != '') {
if (preg_match('/ON DELETE (.+?)(?:\s+ON|$)/msi',$on,$m)) {
$on_delete = strtolower(trim($m[1]));
}
if (preg_match('/ON UPDATE (.+?)(?:\s+ON|$)/msi',$on,$m)) {
$on_update = strtolower(trim($m[1]));
}
}
$res[] = array (
'name' => $name,
'c_cols' => $t_cols,
'p_table' => $match[3][$i],
'p_cols' => $r_cols,
'update' => $on_update,
'delete' => $on_delete
);
}
}
return $res;
}
public function db_create_table($name,$fields)
{
$a = array();
foreach ($fields as $n => $f)
{
$type = $f['type'];
$len = (integer) $f['len'];
$default = $f['default'];
$null = $f['null'];
$type = $this->udt2dbt($type,$len,$default);
$len = $len > 0 ? '('.$len.')' : '';
$null = $null ? 'NULL' : 'NOT NULL';
if ($default === null) {
$default = 'DEFAULT NULL';
} elseif ($default !== false) {
$default = 'DEFAULT '.$default.' ';
} else {
$default = '';
}
$a[] =
$this->con->escapeSystem($n).' '.
$type.$len.' '.$null.' '.$default;
}
$sql =
'CREATE TABLE '.$this->con->escapeSystem($name)." (\n".
implode(",\n",$a).
"\n) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin ";
$this->con->execute($sql);
}
public function db_create_field($table,$name,$type,$len,$null,$default)
{
$type = $this->udt2dbt($type,$len,$default);
$len = (integer) $len > 0 ? '('.(integer) $len.')' : '';
$null = $null ? 'NULL' : 'NOT NULL';
if ($default === null) {
$default = 'DEFAULT NULL';
} elseif ($default !== false) {
$default = 'DEFAULT '.$default;
} else {
$default = '';
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'ADD COLUMN '.$this->con->escapeSystem($name).' '.
$type.$len.' '.$null.' '.$default;
$this->con->execute($sql);
}
public function db_create_primary($table,$name,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'ADD CONSTRAINT PRIMARY KEY ('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_create_unique($table,$name,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'ADD CONSTRAINT UNIQUE KEY '.$this->con->escapeSystem($name).' '.
'('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_create_index($table,$name,$type,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'ADD INDEX '.$this->con->escapeSystem($name).' USING '.$type.' '.
'('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_create_reference($name,$c_table,$c_cols,$p_table,$p_cols,$update,$delete)
{
$c = array();
$p = array();
foreach ($c_cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
foreach ($p_cols as $v) {
$p[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($c_table).' '.
'ADD CONSTRAINT '.$name.' FOREIGN KEY '.
'('.implode(',',$c).') '.
'REFERENCES '.$this->con->escapeSystem($p_table).' '.
'('.implode(',',$p).') ';
if ($update) {
$sql .= 'ON UPDATE '.$update.' ';
}
if ($delete) {
$sql .= 'ON DELETE '.$delete.' ';
}
$this->con->execute($sql);
}
public function db_alter_field($table,$name,$type,$len,$null,$default)
{
$type = $this->udt2dbt($type,$len,$default);
$len = (integer) $len > 0 ? '('.(integer) $len.')' : '';
$null = $null ? 'NULL' : 'NOT NULL';
if ($default === null) {
$default = 'DEFAULT NULL';
} elseif ($default !== false) {
$default = 'DEFAULT '.$default;
} else {
$default = '';
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'CHANGE COLUMN '.$this->con->escapeSystem($name).' '.$this->con->escapeSystem($name).' '.
$type.$len.' '.$null.' '.$default;
$this->con->execute($sql);
}
public function db_alter_primary($table,$name,$newname,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'DROP PRIMARY KEY, ADD PRIMARY KEY '.
'('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_alter_unique($table,$name,$newname,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'DROP INDEX '.$this->con->escapeSystem($name).', '.
'ADD UNIQUE '.$this->con->escapeSystem($newname).' '.
'('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_alter_index($table,$name,$newname,$type,$cols)
{
$c = array();
foreach ($cols as $v) {
$c[] = $this->con->escapeSystem($v);
}
$sql =
'ALTER TABLE '.$this->con->escapeSystem($table).' '.
'DROP INDEX '.$this->con->escapeSystem($name).', '.
'ADD INDEX '.$this->con->escapeSystem($newname).' '.
'USING '.$type.' '.
'('.implode(',',$c).') ';
$this->con->execute($sql);
}
public function db_alter_reference($name,$newname,$c_table,$c_cols,$p_table,$p_cols,$update,$delete)
{
$sql =
'ALTER TABLE '.$this->con->escapeSystem($c_table).' '.
'DROP FOREIGN KEY '.$this->con->escapeSystem($name);
$this->con->execute($sql);
$this->createReference($newname,$c_table,$c_cols,$p_table,$p_cols,$update,$delete);
}
}
?>