egroupware_official/setup/inc/class.schema_proc_mysql.inc.php

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2001-07-30 17:59:25 +02:00
<?php
/**************************************************************************\
* phpGroupWare - Setup *
* http://www.phpgroupware.org *
* -------------------------------------------- *
* 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; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
/* $Id$ */
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)
{
$sTranslated = "";
switch($sType)
{
case "auto":
$sTranslated = "int(11) auto_increment";
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)
{
$sTranslated = "text";
}
break;
}
return (strlen($sTranslated) > 0);
}
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)
{
$sTranslated = '';
if ($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
$sTranslated = "'type' => 'varchar', 'precision' => 255";
break;
case "varchar":
if ($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 (strlen($sTranslated) > 0);
}
function GetPKSQL($sFields)
{
return "PRIMARY KEY($sFields)";
}
function GetUCSQL($sFields)
{
return "UNIQUE($sFields)";
}
function _GetColumns($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 ($scales[1])
{
$prec = $scales[0];
$scale = $scales[1];
}
$this->rTranslateType($colinfo[0], $prec, $scale, &$type);
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 TO $sNewTableName"));
}
function RenameColumn($oProc, &$aTables, $sTableName, $sOldColumnName, $sNewColumnName, $bCopyData = true)
{
// 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 " . $sNewColumnSQL)); */
2001-07-30 17:59:25 +02:00
}
return false;
}
function AddColumn($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)
{
$sSequenceSQL = "";
return true;
}
function CreateTable($oProc, &$aTables, $sTableName, $aTableDef)
{
if ($oProc->_GetTableSQL($sTableName, $aTableDef, $sTableSQL, $sSequenceSQL))
{
// create sequence first since it will be needed for default
if ($sSequenceSQL != "")
{
$oProc->m_odb->query($sSequenceSQL);
}
$query = "CREATE TABLE $sTableName ($sTableSQL)";
return !!($oProc->m_odb->query($query));
}
return false;
}
}
?>