egroupware_official/phpgwapi/inc/class.schema_proc.inc.php
2004-05-05 12:06:13 +00:00

560 lines
14 KiB
PHP

<?php
/**************************************************************************\
* eGroupWare - Setup *
* http://www.egroupware.org *
* -------------------------------------------- *
* This file written by Michael Dean<mdean@users.sourceforge.net> *
* and Miles Lott<milosch@groupwhere.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
{
var $m_oTranslator;
var $m_oDeltaProc;
var $m_odb;
var $m_aTables;
var $m_bDeltaOnly;
function schema_proc($dbms)
{
$this->sType = $dbms;
$this->m_oTranslator = CreateObject('phpgwapi.schema_proc_' . $dbms);
$this->m_oDeltaProc = CreateObject('phpgwapi.schema_proc_array');
$this->m_aTables = array();
$this->m_bDeltaOnly = False; // Default to false here in case it's just a CreateTable script
}
function GenerateScripts($aTables, $bOutputHTML=False)
{
if (!is_array($aTables))
{
return False;
}
$this->m_aTables = $aTables;
$sAllTableSQL = '';
foreach ($this->m_aTables as $sTableName => $aTableDef)
{
$sSequenceSQL = '';
$append_ix = False;
if($this->_GetTableSQL($sTableName, $aTableDef, $sTableSQL, $sSequenceSQL,$append_ix))
{
if($append_ix)
{
$sTableSQL = "CREATE TABLE $sTableName (\n$sTableSQL\n"
. $this->m_oTranslator->m_sStatementTerminator;
}
else
{
$sTableSQL = "CREATE TABLE $sTableName (\n$sTableSQL\n)"
. $this->m_oTranslator->m_sStatementTerminator;
}
if($sSequenceSQL != '')
{
$sAllTableSQL .= $sSequenceSQL . "\n";
}
$sAllTableSQL .= $sTableSQL . "\n\n";
}
else
{
if($bOutputHTML)
{
print('<br>Failed generating script for <b>' . $sTableName . '</b><br>');
echo '<pre style="text-align: left;">'.$sTableName.' = '; print_r($aTableDef); echo "</pre>\n";
}
return false;
}
}
if($bOutputHTML)
{
print('<pre>' . $sAllTableSQL . '</pre><br><br>');
}
return True;
}
function ExecuteScripts($aTables, $bOutputHTML=False)
{
if(!is_array($aTables) || !IsSet($this->m_odb))
{
return False;
}
reset($aTables);
$this->m_aTables = $aTables;
while(list($sTableName, $aTableDef) = each($aTables))
{
if($this->CreateTable($sTableName, $aTableDef))
{
if($bOutputHTML)
{
echo '<br>Create Table <b>' . $sTableName . '</b>';
}
}
else
{
if($bOutputHTML)
{
echo '<br>Create Table Failed For <b>' . $sTableName . '</b>';
}
return False;
}
}
return True;
}
function DropAllTables($aTables, $bOutputHTML=False)
{
if(!is_array($aTables) || !isset($this->m_odb))
{
return False;
}
$this->m_aTables = $aTables;
reset($this->m_aTables);
while(list($sTableName, $aTableDef) = each($this->m_aTables))
{
if($this->DropTable($sTableName))
{
if($bOutputHTML)
{
echo '<br>Drop Table <b>' . $sTableSQL . '</b>';
}
}
else
{
return False;
}
}
return True;
}
function DropTable($sTableName)
{
$retVal = $this->m_oDeltaProc->DropTable($this, $this->m_aTables, $sTableName);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->DropTable($this, $this->m_aTables, $sTableName);
}
function DropColumn($sTableName, $aTableDef, $sColumnName, $bCopyData = true)
{
$retVal = $this->m_oDeltaProc->DropColumn($this, $this->m_aTables, $sTableName, $aTableDef, $sColumnName, $bCopyData);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->DropColumn($this, $this->m_aTables, $sTableName, $aTableDef, $sColumnName, $bCopyData);
}
function RenameTable($sOldTableName, $sNewTableName)
{
$retVal = $this->m_oDeltaProc->RenameTable($this, $this->m_aTables, $sOldTableName, $sNewTableName);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->RenameTable($this, $this->m_aTables, $sOldTableName, $sNewTableName);
}
function RenameColumn($sTableName, $sOldColumnName, $sNewColumnName, $bCopyData=True)
{
$retVal = $this->m_oDeltaProc->RenameColumn($this, $this->m_aTables, $sTableName, $sOldColumnName, $sNewColumnName, $bCopyData);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->RenameColumn($this, $this->m_aTables, $sTableName, $sOldColumnName, $sNewColumnName, $bCopyData);
}
function AlterColumn($sTableName, $sColumnName, $aColumnDef, $bCopyData=True)
{
$retVal = $this->m_oDeltaProc->AlterColumn($this, $this->m_aTables, $sTableName, $sColumnName, $aColumnDef, $bCopyData);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->AlterColumn($this, $this->m_aTables, $sTableName, $sColumnName, $aColumnDef, $bCopyData);
}
function AddColumn($sTableName, $sColumnName, $aColumnDef)
{
$retVal = $this->m_oDeltaProc->AddColumn($this, $this->m_aTables, $sTableName, $sColumnName, $aColumnDef);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->AddColumn($this, $this->m_aTables, $sTableName, $sColumnName, $aColumnDef);
}
function CreateTable($sTableName, $aTableDef)
{
$retVal = $this->m_oDeltaProc->CreateTable($this, $this->m_aTables, $sTableName, $aTableDef);
if($this->m_bDeltaOnly)
{
return $retVal;
}
return $retVal && $this->m_oTranslator->CreateTable($this, $this->m_aTables, $sTableName, $aTableDef);
}
// This function manually re-created the table incl. primary key and all other indices
// It is meant to use if the primary key, existing indices or column-order changes or
// columns are not longer used or new columns need to be created (with there default value or NULL)
// Beside the default-value in the schema, one can give extra defaults via $aDefaults to eg. use an
// other colum or function to set the value of a new or changed column
function RefreshTable($sTableName, $aTableDef, $aDefaults=False)
{
if($GLOBALS['DEBUG']) { echo "<p>schema_proc::RefreshTable('$sTableName',<pre>".print_r($aTableDef,True).")\n\nm_aTables[$sTableName]=".print_r($this->m_aTables[$sTableName],True)."</pre>\n"; }
$old_fd = $this->m_aTables[$sTableName]['fd'];
$Ok = $this->m_oDeltaProc->RefreshTable($this, $this->m_aTables, $sTableName, $aTableDef);
if(!$Ok || $this->m_bDeltaOnly)
{
return $Ok; // nothing else to do
}
$tmp_name = 'tmp_'.$sTableName;
$this->m_odb->transaction_begin();
$select = array();
foreach($aTableDef['fd'] as $name => $data)
{
if ($aDefaults && isset($aDefaults[$name])) // use given default
{
$select[] = $aDefaults[$name];
}
elseif (isset($old_fd[$name])) // existing column, use its value => column-name in query
{
$select[] = $name;
}
else // new column => use default value or NULL
{
if (!isset($data['default']) && (!isset($data['nullable']) || $data['nullable']))
{
$select[] = 'NULL';
}
else
{
$select[] = $this->m_odb->quote(isset($data['default']) ? $data['default'] : '',$data['type']);
}
}
}
$select = implode(',',$select);
$Ok = $this->RenameTable($sTableName,$tmp_name) &&
$this->CreateTable($sTableName,$aTableDef) &&
$this->m_odb->query("INSERT INTO $sTableName SELECT DISTINCT $select FROM $tmp_name",__LINE__,__FILE__);
if (!$Ok)
{
$this->m_odb->transaction_abort();
return False;
}
$this->DropTable($tmp_name);
$this->m_odb->transaction_commit();
return True;
}
function f($value)
{
if($this->m_bDeltaOnly)
{
// Don't care, since we are processing deltas only
return False;
}
return $this->m_odb->f($value);
}
function num_rows()
{
if($this->m_bDeltaOnly)
{
// If not False, we will cause while loops calling us to hang
return False;
}
return $this->m_odb->num_rows();
}
function next_record()
{
if($this->m_bDeltaOnly)
{
// If not False, we will cause while loops calling us to hang
return False;
}
return $this->m_odb->next_record();
}
function query($sQuery, $line='', $file='')
{
if($this->m_bDeltaOnly)
{
// Don't run this query, since we are processing deltas only
return True;
}
return $this->m_odb->query($sQuery, $line, $file);
}
function _GetTableSQL($sTableName, $aTableDef, &$sTableSQL, &$sSequenceSQL,&$append_ix)
{
if(!is_array($aTableDef))
{
return False;
}
$sTableSQL = '';
reset($aTableDef['fd']);
while(list($sFieldName, $aFieldAttr) = each($aTableDef['fd']))
{
$sFieldSQL = '';
if($this->_GetFieldSQL($aFieldAttr, $sFieldSQL))
{
if($sTableSQL != '')
{
$sTableSQL .= ",\n";
}
$sTableSQL .= "$sFieldName $sFieldSQL";
if($aFieldAttr['type'] == 'auto')
{
$this->m_oTranslator->GetSequenceSQL($sTableName, $sSequenceSQL);
if($sSequenceSQL != '')
{
$sTableSQL .= sprintf(" DEFAULT nextval('seq_%s')", $sTableName);
}
}
}
else
{
if($GLOBALS['DEBUG']) { echo 'GetFieldSQL failed for ' . $sFieldName; }
return False;
}
}
$sUCSQL = '';
$sPKSQL = '';
$sIXSQL = '';
if(count($aTableDef['pk']) > 0)
{
if(!$this->_GetPK($aTableDef['pk'], $sPKSQL))
{
if($bOutputHTML)
{
print('<br>Failed getting primary key<br>');
}
return False;
}
}
if(count($aTableDef['uc']) > 0)
{
if(!$this->_GetUC($aTableDef['uc'], $sUCSQL))
{
if($bOutputHTML)
{
print('<br>Failed getting unique constraint<br>');
}
return False;
}
}
if(count($aTableDef['ix']) > 0)
{
$append_ix = False;
if(!$this->_GetIX($aTableDef['ix'], $sIXSQL,$append_ix,$sTableName))
{
if($bOutputHTML)
{
print('<br>Failed getting index<br>');
}
return False;
}
// print('<br>HELLO!: ' . $sIXSQL);
}
if($sPKSQL != '')
{
$sTableSQL .= ",\n" . $sPKSQL;
}
if($sUCSQL != '')
{
$sTableSQL .= ",\n" . $sUCSQL;
}
if($sIXSQL != '')
{
if($append_ix)
{
$sTableSQL .= ");\n" . $sIXSQL;
//pg: CREATE INDEX test1_id_index ON test1 (id);
}
else
{
$sTableSQL .= ",\n" . $sIXSQL;
}
}
return True;
}
// Get field DDL
function _GetFieldSQL($aField, &$sFieldSQL)
{
if($GLOBALS['DEBUG']) { echo'<br>_GetFieldSQL(): Incoming ARRAY: '; var_dump($aField); }
if(!is_array($aField))
{
return false;
}
$sType = '';
$iPrecision = 0;
$iScale = 0;
$bNullable = true;
reset($aField);
while(list($sAttr, $vAttrVal) = each($aField))
{
switch ($sAttr)
{
case 'type':
$sType = $vAttrVal;
break;
case 'precision':
$iPrecision = (int)$vAttrVal;
break;
case 'scale':
$iScale = (int)$vAttrVal;
break;
case 'nullable':
$bNullable = $vAttrVal;
break;
default:
break;
}
}
// Translate the type for the DBMS
if($sFieldSQL = $this->m_oTranslator->TranslateType($sType, $iPrecision, $iScale))
{
if(!$bNullable)
{
if(strpos(strtolower($sFieldSQL),' not null')===false)
{
$sFieldSQL .= ' NOT NULL';
}
}
if(isset($aField['default']))
{
if($GLOBALS['DEBUG']) { echo'<br>_GetFieldSQL(): Calling TranslateDefault for "' . $aField['default'] . '"'; }
// Get default DDL - useful for differences in date defaults (eg, now() vs. getdate())
$sTranslatedDefault = $aField['default'] == '0' ? $aField['default'] : $this->m_oTranslator->TranslateDefault($aField['default']);
$sFieldSQL .= " DEFAULT '$sTranslatedDefault'";
}
if($GLOBALS['DEBUG']) { echo'<br>_GetFieldSQL(): Outgoing SQL: ' . $sFieldSQL; }
return true;
}
if($GLOBALS['DEBUG']) { echo '<br>Failed to translate field: type[' . $sType . '] precision[' . $iPrecision . '] scale[' . $iScale . ']<br>'; }
return False;
}
function _GetPK($aFields, &$sPKSQL)
{
$sPKSQL = '';
if(count($aFields) < 1)
{
return True;
}
$sPKSQL = $this->m_oTranslator->GetPKSQL(implode(',',$aFields));
return True;
}
function _GetUC($aFields, &$sUCSQL)
{
$sUCSQL = '';
if(count($aFields) < 1)
{
return True;
}
foreach($aFields as $mFields)
{
$aUCSQL[] = $this->m_oTranslator->GetUCSQL(
is_array($mFields) ? implode(',',$mFields) : $mFields);
}
$sUCSQL = implode(",\n",$aUCSQL);
return True;
}
function _GetIX($aFields, &$sIXSQL, &$append, $sTableName)
{
$sUCSQL = '';
if(count($aFields) < 1)
{
return True;
}
foreach($aFields as $mFields)
{
$options = False;
if (is_array($mFields))
{
if (isset($mFields['options'])) // array sets additional options
{
$options = @$mFields['options'][$this->sType]; // db-specific options, eg. index-type
unset($mFields['options']);
}
$mFields = implode(',',$mFields);
}
$aIXSQL[] = $this->m_oTranslator->GetIXSQL($mFields,$append,$options,$sTableName);
}
if($append)
{
$sIXSQL = implode("\n",$aIXSQL);
}
else
{
$sIXSQL = implode(",\n",$aIXSQL);
}
return True;
}
}
?>