egroupware_official/phpgwapi/inc/class.schema_proc_mysql.inc.php

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<?php
/**************************************************************************\
* phpGroupWare - Setup *
* http://www.phpgroupware.org *
* -------------------------------------------- *
* This file written by Michael Dean<mdean@users.sourceforge.net> *
* and Miles Lott<milosch@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)
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{
$sTranslated = '';
switch($sType)
{
case 'auto':
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$sTranslated = 'int(11) auto_increment not null';
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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 $sTranslated;
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}
function TranslateDefault($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)
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{
$sTranslated = '';
if ($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':
$sTranslated = "'type' => 'int', 'precision' => 8";
break;
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case 'char':
if ($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 $sTranslated;
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}
function GetPKSQL($sFields)
{
return "PRIMARY KEY($sFields)";
}
function GetUCSQL($sFields)
{
return "UNIQUE($sFields)";
}
function GetIXSQL($sFields,$options=False)
{
$type = 'INDEX';
$length = '';
if (strtoupper($options) == 'FULLTEXT')
{
$type = 'FULLTEXT';
}
if (is_numeric($options))
{
$length = "($options)";
}
return "$type($sFields $length)";
}
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function _GetColumns($oProc, $sTableName, &$sColumns, $sDropColumn = '')
{
$sColumns = '';
$this->pk = array();
$this->fk = array();
$this->ix = array();
$this->uc = array();
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/* 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('\).*','',$colinfo[1]);
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$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, $scale);
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if ($oProc->m_odb->f(2) == 'YES')
{
$null = "'nullable' => True";
}
else
{
$null = "'nullable' => False";
}
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if ($oProc->m_odb->f(4) != '')
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{
$default = "'default' => '".$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 . $default . '),' . "\n";
/*
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if ($oProc->m_odb->f(3) == 'PRI')
{
$this->pk[] = $oProc->m_odb->f(0);
}
if ($oProc->m_odb->f(3) == 'UNI')
{
$this->uc[] = $oProc->m_odb->f(0);
}
// index over multiple columns
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if ($oProc->m_odb->f(3) == 'MUL')
{
$this->ix[] = $oProc->m_odb->f(0);
}
*/
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}
$this->_GetIndices($oProc,$sTableName,$this->pk,$this->ix,$this->uc,$this->fk);
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/* 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 _GetIndices($oProc,$sTableName,&$aPk,&$aIx,&$aUc,&$aFk)
{
$aPk = $aIx = $aUc = $aFk = array();
$seq = $ix = $uc = 0;
$oProc->m_odb->query("show index from $sTableName");
while ($oProc->m_odb->next_record())
{
if ($seq >= $oProc->m_odb->f('Seq_in_index')) // new index started
{
$$type += 1;
}
if ($oProc->m_odb->f('Key_name') == 'PRIMARY') // pk
{
$aPk[] = $oProc->m_odb->f('Column_name');
$type = 'pk';
}
elseif ($oProc->m_odb->f('Non_unique')) // ix
{
$aIx[$ix][] = $oProc->m_odb->f('Column_name');
$type = 'ix';
if ($oProc->m_odb->f('Comment') == 'FULLTEXT')
{
$aIx[$ix]['options'] = array('mysql' => 'FULLTEXT');
}
elseif (intval($oProc->m_odb->f('Sub_part')))
{
$aIx[$ix]['options'] = array('mysql' => intval($oProc->m_odb->f('Sub_part')));
}
}
else // uc
{
$aUc[$uc][] = $oProc->m_odb->f('Column_name');
$type = 'uc';
}
$seq = $oProc->m_odb->f('Seq_in_index');
}
//echo "Indices from $sTableName<pre>pk=".print_r($aPk,True)."\nix=".print_r($aIx,True)."\nuc=".print_r($aUc,True)."</pre>\n";
}
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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)
{
$sSequenceSQL = '';
return true;
}
function CreateTable($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;
}
}
?>