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[Phpgroupware-cvs] phpgwapi/inc/class.schema_proc_mysql.inc.php, 1.10
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Subject: |
[Phpgroupware-cvs] phpgwapi/inc/class.schema_proc_mysql.inc.php, 1.10 |
Date: |
Thu, 30 Dec 2004 07:47:31 +0100 |
Update of /phpgwapi/inc
Added Files:
Branch:
class.schema_proc_mysql.inc.php
date: 2004/12/30 06:47:31; author: skwashd; state: Exp; lines: +9 -3
Log Message:
new HEAD
=====================================================================
<?php
/**
* Database schema abstraction class for MySQL
* @author Michael Dean <address@hidden>
* @author Miles Lott <address@hidden>
* @copyright Copyright (C) ? Michael Dean, Miles Lott
* @copyright Portions Copyright (C) 2003,2004 Free Software Foundation,
Inc. http://www.fsf.org/
* @license http://www.fsf.org/licenses/gpl.html GNU General Public
License
* @package phpgwapi
* @subpackage database
* @version $Id: class.schema_proc_mysql.inc.php,v 1.10 2004/12/30
06:47:31 skwashd Exp $
*/
/**
* Database schema abstraction class for MySQL
*
* @package phpgwapi
* @subpackage database
*/
class schema_proc_mysql
{
var $m_sStatementTerminator;
/* Following added to convert sql to array */
var $sCol = array();
var $pk = array();
var $fk = array();
var $ix = array();
var $uc = array();
function schema_proc_mysql()
{
$this->m_sStatementTerminator = ';';
}
/* Return a type suitable for DDL */
function TranslateType($sType, $iPrecision = 0, $iScale = 0)
{
$sTranslated = '';
switch($sType)
{
case 'auto':
$sTranslated = 'int(11) auto_increment
not null';
break;
case 'blob':
$sTranslated = 'blob';
break;
case 'char':
if ($iPrecision > 0 && $iPrecision <
256)
{
$sTranslated =
sprintf("char(%d)", $iPrecision);
}
if ($iPrecision > 255)
{
$sTranslated = 'text';
}
break;
case 'date':
$sTranslated = 'date';
break;
case 'decimal':
$sTranslated =
sprintf("decimal(%d,%d)", $iPrecision, $iScale);
break;
case 'float':
switch ($iPrecision)
{
case 4:
$sTranslated = 'float';
break;
case 8:
$sTranslated = 'double';
break;
}
break;
case 'int':
switch ($iPrecision)
{
case 2:
$sTranslated =
'smallint';
break;
case 4:
$sTranslated = 'int';
break;
case 8:
$sTranslated = 'bigint';
break;
}
break;
case 'longtext':
$sTranslated = 'longtext';
break;
case 'text':
$sTranslated = 'text';
break;
case 'timestamp':
$sTranslated = 'datetime';
break;
case 'varchar':
if ($iPrecision > 0 && $iPrecision <
256)
{
$sTranslated =
sprintf("varchar(%d)", $iPrecision);
}
if ($iPrecision > 255)
{
$sTranslated = 'text';
}
break;
}
return $sTranslated;
}
function TranslateDefault($sDefault)
{
switch ($sDefault)
{
case 'current_date':
case 'current_timestamp':
return "'now'";
}
return "'" . $sDefault . "'";
}
/* Inverse of above, convert sql column types to array info */
function rTranslateType($sType, $iPrecision = 0, $iScale = 0)
{
$sTranslated = '';
if ($sType == 'int' || $sType == 'tinyint' || $sType
== 'smallint' || $sType == 'bigint')
{
if ($iPrecision > 8)
{
$iPrecision = 8;
}
elseif($iPrecision > 4)
{
$iPrecision = 4;
}
else
{
$iPrecision = 2;
}
}
switch($sType)
{
case 'tinyint':
case 'smallint':
$sTranslated = "'type' => 'int',
'precision' => 2";
break;
case 'int':
$sTranslated = "'type' => 'int',
'precision' => 4";
break;
case 'bigint':
$sTranslated = "'type' => 'int',
'precision' => 8";
case 'char':
if ($iPrecision > 0 && $iPrecision <
256)
{
$sTranslated = "'type' =>
'char', 'precision' => $iPrecision";
}
if ($iPrecision > 255)
{
$sTranslated = "'type' =>
'text'";
}
break;
case 'decimal':
$sTranslated = "'type' => 'decimal',
'precision' => $iPrecision, 'scale' => $iScale";
break;
case 'float':
case 'double':
$sTranslated = "'type' => 'float',
'precision' => $iPrecision";
break;
case 'datetime':
$sTranslated = "'type' => 'timestamp'";
break;
case 'enum':
/* Here comes a nasty assumption */
/* $sTranslated = "'type' =>
'varchar', 'precision' => 255"; */
$sTranslated = "'type' => 'varchar',
'precision' => $iPrecision";
break;
case 'varchar':
if ($iPrecision > 0 && $iPrecision <
256)
{
$sTranslated = "'type' =>
'varchar', 'precision' => $iPrecision";
}
if ($iPrecision > 255)
{
$sTranslated = "'type' =>
'text'";
}
break;
case 'longtext':
case 'text':
case 'blob':
case 'date':
$sTranslated = "'type' => '$sType'";
break;
}
return $sTranslated;
}
function GetPKSQL($sFields)
{
return "PRIMARY KEY($sFields)";
}
function GetUCSQL($sFields)
{
return "UNIQUE($sFields)";
}
function GetIXSQL($sFields)
{
return "INDEX ($sFields)";
}
// foreign key supports needs MySQL 3.23.44 and up with InnoDB
or MySQL 5.1
// or other versions the syntax is parsed in table create
commands
// see chapter 1.8.4.5
function GetFKSQL($sFields)
{
if (ereg("\((.*)\)", $sFields, $regs))
{
$ret = "FOREIGN KEY (".$regs[1].")\n" .
" REFERENCES ".$sFields;
return $ret;
} else
return ""; // incorrect FK declaration found
}
function _GetColumns($oProc, $sTableName, &$sColumns,
$sDropColumn = '')
{
$sColumns = '';
$this->pk = array();
$this->fk = array();
$this->ix = array();
$this->uc = array();
/* Field, Type, Null, Key, Default, Extra */
$oProc->m_odb->query("describe $sTableName");
while ($oProc->m_odb->next_record())
{
$type = $default = $null = $nullcomma = $prec =
$scale = $ret = $colinfo = $scales = '';
if ($sColumns != '')
{
$sColumns .= ',';
}
$sColumns .= $oProc->m_odb->f(0);
/* The rest of this is used only for SQL->array
*/
$colinfo = explode('(',$oProc->m_odb->f(1));
$prec = ereg_replace(')','',$colinfo[1]);
$scales = explode(',',$prec);
if($colinfo[0] == 'enum')
{
/* set prec to length of longest
enum-value */
for($prec=0; list($nul,$name) =
@each($scales);)
{
if($prec < (strlen($name) - 2))
{
/* -2 as name is like
"'name'" */
$prec = (strlen($name)
- 2);
}
}
}
elseif ($scales[1])
{
$prec = $scales[0];
$scale = $scales[1];
}
$type = $this->rTranslateType($colinfo[0],
$prec, $scale);
if ($oProc->m_odb->f(2) == 'YES')
{
$null = "'nullable' => True";
}
else
{
$null = "'nullable' => False";
}
if ($oProc->m_odb->f(4) != '')
{
$default = "'default' =>
'".$oProc->m_odb->f(4)."'";
$nullcomma = ',';
}
else
{
$default = '';
$nullcomma = '';
}
if ($oProc->m_odb->f(5))
{
$type = "'type' => 'auto'";
}
$this->sCol[] = "\t\t\t\t'" .
$oProc->m_odb->f(0)."' => array(" . $type . ',' . $null . $nullcomma . $default
. '),' . "\n";
if ($oProc->m_odb->f(3) == 'PRI')
{
$this->pk[] = $oProc->m_odb->f(0);
}
if ($oProc->m_odb->f(3) == 'UNI')
{
$this->uc[] = $oProc->m_odb->f(0);
}
/* Hmmm, MUL could also mean unique, or not...
*/
if ($oProc->m_odb->f(3) == 'MUL')
{
$this->ix[] = $oProc->m_odb->f(0);
}
}
/* ugly as heck, but is here to chop the trailing comma
on the last element (for php3) */
$this->sCol[count($this->sCol) - 1] =
substr($this->sCol[count($this->sCol) - 1],0,-2) . "\n";
return false;
}
function DropTable($oProc, &$aTables, $sTableName)
{
return !!($oProc->m_odb->query("DROP TABLE " .
$sTableName));
}
function DropColumn($oProc, &$aTables, $sTableName,
$aNewTableDef, $sColumnName, $bCopyData = true)
{
return !!($oProc->m_odb->query("ALTER TABLE $sTableName
DROP COLUMN $sColumnName"));
}
function RenameTable($oProc, &$aTables, $sOldTableName,
$sNewTableName)
{
return !!($oProc->m_odb->query("ALTER TABLE
$sOldTableName RENAME $sNewTableName"));
}
function RenameColumn($oProc, &$aTables, $sTableName,
$sOldColumnName, $sNewColumnName, $bCopyData = true)
{
/*
TODO: This really needs testing - it can affect
primary keys, and other table-related objects
like sequences and such
*/
global $DEBUG;
if ($DEBUG) { echo '<br>RenameColumn: calling
_GetFieldSQL for ' . $sNewColumnName; }
if
($oProc->_GetFieldSQL($aTables[$sTableName]["fd"][$sNewColumnName],
$sNewColumnSQL))
{
return !!($oProc->m_odb->query("ALTER TABLE
$sTableName CHANGE $sOldColumnName $sNewColumnName " . $sNewColumnSQL));
}
return false;
}
function AlterColumn($oProc, &$aTables, $sTableName,
$sColumnName, &$aColumnDef, $bCopyData = true)
{
global $DEBUG;
if ($DEBUG) { echo '<br>AlterColumn: calling
_GetFieldSQL for ' . $sNewColumnName; }
if
($oProc->_GetFieldSQL($aTables[$sTableName]["fd"][$sColumnName],
$sNewColumnSQL))
{
return !!($oProc->m_odb->query("ALTER TABLE
$sTableName MODIFY $sColumnName " . $sNewColumnSQL));
/* return !!($oProc->m_odb->query("ALTER TABLE
$sTableName CHANGE $sColumnName $sColumnName " . $sNewColumnSQL)); */
}
return false;
}
function AddColumn($oProc, &$aTables, $sTableName,
$sColumnName, &$aColumnDef)
{
$oProc->_GetFieldSQL($aColumnDef, $sFieldSQL);
$query = "ALTER TABLE $sTableName ADD COLUMN
$sColumnName $sFieldSQL";
return !!($oProc->m_odb->query($query));
}
function GetSequenceSQL($sTableName, &$sSequenceSQL)
{
$sSequenceSQL = '';
return false;
}
function GetTriggerSQL($sTableName, $sColumnNames,
&$sTriggerSQL)
{
$sTriggerSQL = '';
return false;
}
function CreateTable($oProc, &$aTables, $sTableName, $aTableDef)
{
if ($oProc->_GetTableSQL($sTableName, $aTableDef,
$sTableSQL, $sSequenceSQL, $sTriggerSQL))
{
/* create sequence first since it will be
needed for default */
if ($sSequenceSQL != '')
{
$oProc->m_odb->query($sSequenceSQL);
}
$query = "CREATE TABLE $sTableName
($sTableSQL)";
return !!($oProc->m_odb->query($query));
}
return false;
}
}
?>
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