forked from extern/egroupware
602 lines
16 KiB
PHP
602 lines
16 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare - Setup *
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* http://www.phpgroupware.org *
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* SQL for table properties taken from phpPgAdmin Version 2.2.1 *
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* http://www.greatbridge.org/project/phppgadmin *
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* Copyright (C) 1999-2000 Dan Wilson <phpPgAdmin@acucore.com> *
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* Copyright (C) 1998-1999 Tobias Ratschiller <tobias@dnet.it> *
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* -------------------------------------------- *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License, or (at your *
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* option) any later version. *
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\**************************************************************************/
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/* $Id$ */
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class schema_proc_pgsql
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{
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var $m_sStatementTerminator;
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// Following added to convert sql to array
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var $sCol = array();
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var $pk = array();
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var $fk = array();
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var $ix = array();
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var $uc = array();
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function schema_proc_pgsql()
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{
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$this->m_sStatementTerminator = ";";
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}
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// Return a type suitable for DDL
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function TranslateType($sType, $iPrecision = 0, $iScale = 0, &$sTranslated)
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{
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switch($sType)
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{
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case "auto":
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$sTranslated = "int4";
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break;
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case "blob":
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$sTranslated = "text";
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break;
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case "char":
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if ($iPrecision > 0 && $iPrecision < 256)
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{
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$sTranslated = sprintf("char(%d)", $iPrecision);
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}
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if ($iPrecision > 255)
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{
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$sTranslated = "text";
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}
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break;
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case "date":
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$sTranslated = "date";
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break;
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case "decimal":
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$sTranslated = sprintf("decimal(%d,%d)", $iPrecision, $iScale);
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break;
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case "float":
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if ($iPrecision == 4 || $iPrecision == 8)
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{
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$sTranslated = sprintf("float%d", $iPrecision);
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}
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break;
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case "int":
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if ($iPrecision == 2 || $iPrecision == 4 || $iPrecision == 8)
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{
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$sTranslated = sprintf("int%d", $iPrecision);
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}
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break;
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case "longtext":
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$sTranslated = "text";
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break;
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case "text":
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$sTranslated = "text";
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break;
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case "timestamp":
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$sTranslated = "timestamp";
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break;
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case "varchar":
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if ($iPrecision > 0 && $iPrecision < 256)
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{
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$sTranslated = sprintf("varchar(%d)", $iPrecision);
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}
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if ($iPrecision > 255)
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{
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$sTranslated = "text";
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}
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break;
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}
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return (strlen($sTranslated) > 0);
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}
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function TranslateDefault($sDefault)
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{
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switch ($sDefault)
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{
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case "current_date":
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case "current_timestamp":
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return "now";
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}
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return $sDefault;
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}
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// Inverse of above, convert sql column types to array info
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function rTranslateType($sType, $iPrecision = 0, $iScale = 0, &$sTranslated)
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{
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$sTranslated = "";
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switch($sType)
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{
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case "serial":
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$sTranslated = "'type' => 'auto'";
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break;
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case "int2":
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$sTranslated = "'type' => 'int', 'precision' => 2";
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break;
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case "int4":
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$sTranslated = "'type' => 'int', 'precision' => 4";
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break;
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case "int8":
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$sTranslated = "'type' => 'int', 'precision' => 8";
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break;
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case "bpchar":
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case "char":
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if ($iPrecision > 0 && $iPrecision < 256)
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{
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$sTranslated = "'type' => 'char', 'precision' => $iPrecision";
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}
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if ($iPrecision > 255)
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{
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$sTranslated = "'type' => 'text'";
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}
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break;
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case "numeric":
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/* Borrowed from phpPgAdmin */
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$iPrecision = ($iScale >> 16) & 0xffff;
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$iScale = ($iScale - 4) & 0xffff;
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$sTranslated = "'type' => 'decimal', 'precision' => $iPrecision, 'scale' => $iScale";
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break;
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case "float":
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case "float4":
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case "float8":
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case "double":
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$sTranslated = "'type' => 'float', 'precision' => $iPrecision";
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break;
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case "datetime":
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$sTranslated = "'type' => 'timestamp'";
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break;
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case "varchar":
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if ($iPrecision > 0 && $iPrecision < 256)
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{
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$sTranslated = "'type' => 'varchar', 'precision' => $iPrecision";
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}
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if ($iPrecision > 255)
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{
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$sTranslated = "'type' => 'text'";
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}
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break;
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case "text":
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case "blob":
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case "date":
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$sTranslated = "'type' => '$sType'";
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break;
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}
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return (strlen($sTranslated) > 0);
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}
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function GetPKSQL($sFields)
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{
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return "PRIMARY KEY($sFields)";
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}
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function GetUCSQL($sFields)
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{
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return "UNIQUE($sFields)";
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}
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function _GetColumns($oProc, $sTableName, &$sColumns, $sDropColumn = '', $sAlteredColumn = '', $sAlteredColumnType = '')
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{
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$sdb = $oProc->m_odb;
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$sdc = $oProc->m_odb;
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$sColumns = "";
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$this->pk = array();
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$this->fk = array();
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$this->ix = array();
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$this->uc = array();
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$query = "SELECT a.attname,a.attnum FROM pg_attribute a,pg_class b WHERE ";
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$query .= "b.oid=a.attrelid AND a.attnum>0 and b.relname='$sTableName'";
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if ($sDropColumn != "")
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{
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$query .= " AND a.attname != '$sDropColumn'";
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}
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$query .= " ORDER BY a.attnum";
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$oProc->m_odb->query($query);
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while ($oProc->m_odb->next_record())
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{
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if ($sColumns != "")
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{
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$sColumns .= ",";
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}
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$sFieldName = $oProc->m_odb->f(0);
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$sColumns .= $sFieldName;
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if ($sAlteredColumn == $sFieldName && $sAlteredColumnType != '')
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{
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$sColumns .= '::' . $sAlteredColumnType;
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}
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}
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//$qdefault = "SELECT substring(d.adsrc for 128) FROM pg_attrdef d, pg_class c "
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// . "WHERE c.relname = $sTableName AND c.oid = d.adrelid AND d.adnum =" . $oProc->m_odb->f(1);
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$sql_get_fields = "
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SELECT
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a.attnum,
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a.attname AS field,
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t.typname AS type,
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a.attlen AS length,
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a.atttypmod AS lengthvar,
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a.attnotnull AS notnull
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FROM
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pg_class c,
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pg_attribute a,
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pg_type t
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WHERE
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c.relname = '$sTableName'
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and a.attnum > 0
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and a.attrelid = c.oid
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and a.atttypid = t.oid
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ORDER BY a.attnum";
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// attnum field type length lengthvar notnull(Yes/No)
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$sdb->query($sql_get_fields);
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while ($sdb->next_record())
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{
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$colnum = $sdb->f(0);
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$colname = $sdb->f(1);
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if ($sdb->f(5) == 'Yes')
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{
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$null = "'nullable' => True";
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}
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else
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{
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$null = "'nullable' => False";
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}
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if ($sdb->f(2) == 'numeric')
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{
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$prec = $sdb->f(3);
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$scale = $sdb->f(4);
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}
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elseif ($sdb->f(3) > 0)
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{
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$prec = $sdb->f(3);
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$scale = 0;
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}
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elseif ($sdb->f(4) > 0)
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{
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$prec = $sdb->f(4) - 4;
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$scale = 0;
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}
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else
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{
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$prec = 0;
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$scale = 0;
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}
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$this->rTranslateType($sdb->f(2),$prec,$scale,$type);
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$sql_get_default = "
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SELECT d.adsrc AS rowdefault
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FROM pg_attrdef d, pg_class c
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WHERE
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c.relname = '$sTableName' AND
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c.oid = d.adrelid AND
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d.adnum = $colnum
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";
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$sdc->query($sql_get_default);
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$sdc->next_record();
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if ($sdc->f(0))
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{
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if (ereg('nextval',$sdc->f(0)))
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{
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$default = '';
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$nullcomma = '';
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}
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else
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{
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$default = "'default' => '".$sdc->f(0)."'";
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$nullcomma = ',';
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}
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}
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else
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{
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$default = '';
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$nullcomma = '';
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}
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$this->sCol[] = "\t\t\t\t'" . $colname . "' => array(" . $type . ',' . $null . $nullcomma . $default . '),' . "\n";
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}
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$sql_pri_keys = "
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SELECT
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ic.relname AS index_name,
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bc.relname AS tab_name,
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ta.attname AS column_name,
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i.indisunique AS unique_key,
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i.indisprimary AS primary_key
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FROM
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pg_class bc,
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pg_class ic,
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pg_index i,
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pg_attribute ta,
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pg_attribute ia
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WHERE
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bc.oid = i.indrelid
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AND ic.oid = i.indexrelid
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AND ia.attrelid = i.indexrelid
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AND ta.attrelid = bc.oid
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AND bc.relname = '$sTableName'
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AND ta.attrelid = i.indrelid
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AND ta.attnum = i.indkey[ia.attnum-1]
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ORDER BY
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index_name, tab_name, column_name";
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$sdc->query($sql_pri_keys);
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while ($sdc->next_record())
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{
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//echo '<br> checking: ' . $sdc->f(4);
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if ($sdc->f(4) == 't')
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{
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$this->pk[] = $sdc->f(2);
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}
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if ($sdc->f(3) == 't')
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{
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$this->uc[] = $sdc->f(2);
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}
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}
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// ugly as heck, but is here to chop the trailing comma on the last element (for php3)
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$this->sCol[count($this->sCol) - 1] = substr($this->sCol[count($this->sCol) - 1],0,-2) . "\n";
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return false;
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}
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function _CopyAlteredTable($oProc, &$aTables, $sSource, $sDest)
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{
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$oDB = $oProc->m_odb;
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$oProc->m_odb->query("select * from $sSource");
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while ($oProc->m_odb->next_record())
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{
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$sSQL = "INSERT INTO $sDest (";
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$i=0;
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@reset($aTables[$sDest]['fd']);
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while (list($name,$arraydef) = each($aTables[$sDest]['fd']))
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{
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if ($i > 0)
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{
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$sSQL .= ',';
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}
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$sSQL .= $name;
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$i++;
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}
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$sSQL .= ') VALUES (';
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@reset($aTables[$sDest]['fd']);
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$i=0;
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while (list($name,$arraydef) = each($aTables[$sDest]['fd']))
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{
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if ($i > 0)
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{
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$sSQL .= ',';
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}
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if ($oProc->m_odb->f($i) != null)
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{
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switch ($arraydef['type'])
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{
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case "blob":
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case "char":
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case "date":
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case "text":
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case "timestamp":
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case "varchar":
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$sSQL .= "'" . $oProc->m_odb->f($i) . "'";
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break;
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default:
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$sSQL .= $oProc->m_odb->f($i);
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}
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}
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else
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{
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$sSQL .= 'null';
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}
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$i++;
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}
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$sSQL .= ')';
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$oDB->query($sSQL);
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}
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return true;
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}
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function GetSequenceForTable($oProc,$table,&$sSequenceName)
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{
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global $DEBUG;
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if($DEBUG) { echo '<br>GetSequenceForTable: ' . $table; }
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$oProc->m_odb->query("SELECT relname FROM pg_class WHERE NOT relname ~ 'pg_.*' AND relname LIKE 'seq_$table' AND relkind='S' ORDER BY relname",__LINE__,__FILE__);
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$oProc->m_odb->next_record();
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if ($oProc->m_odb->f('relname'))
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{
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$sSequenceName = $oProc->m_odb->f('relname');
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}
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return True;
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}
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function GetSequenceFieldForTable($oProc,$table,&$sField)
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{
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global $DEBUG;
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if($DEBUG) { echo '<br>GetSequenceFieldForTable: You rang?'; }
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$oProc->m_odb->query("SELECT a.attname FROM pg_attribute a, pg_class c, pg_attrdef d WHERE c.relname='$table' AND c.oid=d.adrelid AND d.adsrc LIKE '%seq_$table%' AND a.attrelid=c.oid AND d.adnum=a.attnum");
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$oProc->m_odb->next_record();
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if ($oProc->m_odb->f('attname'))
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{
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$sField = $oProc->m_odb->f('attname');
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}
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return True;
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}
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function DropSequenceForTable($oProc,$table)
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{
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global $DEBUG;
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if($DEBUG) { echo '<br>DropSequenceForTable: ' . $table; }
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$this->GetSequenceForTable($oProc,$table,$sSequenceName);
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if ($sSequenceName)
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{
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$oProc->m_odb->query("DROP SEQUENCE " . $sSequenceName,__LINE__,__FILE__);
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}
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return True;
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}
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function DropTable($oProc, &$aTables, $sTableName)
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{
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$this->DropSequenceForTable($oProc,$sTableName);
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return !!($oProc->m_odb->query("DROP TABLE " . $sTableName));
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}
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function DropColumn($oProc, &$aTables, $sTableName, $aNewTableDef, $sColumnName, $bCopyData = true)
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{
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if ($bCopyData)
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{
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$oProc->m_odb->query("SELECT * INTO $sTableName" . "_tmp FROM $sTableName");
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}
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$this->DropTable($oProc, $aTables, $sTableName);
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$oProc->_GetTableSQL($sTableName, $aNewTableDef, $sTableSQL, $sSequenceSQL);
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if($sSequenceSQL)
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{
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$oProc->m_odb->query($sSequenceSQL);
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}
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$query = "CREATE TABLE $sTableName ($sTableSQL)";
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if (!$bCopyData)
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{
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return !!($oProc->m_odb->query($query));
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}
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$oProc->m_odb->query($query);
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$this->_GetColumns($oProc, $sTableName . "_tmp", $sColumns, $sColumnName);
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$query = "INSERT INTO $sTableName SELECT $sColumns FROM $sTableName" . "_tmp";
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$bRet = !!($oProc->m_odb->query($query));
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return ($bRet && $this->DropTable($oProc, $aTables, $sTableName . "_tmp"));
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}
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function RenameTable($oProc, &$aTables, $sOldTableName, $sNewTableName)
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{
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global $DEBUG;
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if ($DEBUG) { echo '<br>RenameTable(): Fetching old sequence for: ' . $sOldTableName; }
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$this->GetSequenceForTable($oProc,$sOldTableName,$sSequenceName);
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if ($DEBUG) { echo ' - ' . $sSequenceName; }
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if ($DEBUG) { echo '<br>RenameTable(): Fetching sequence field for: ' . $sOldTableName; }
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$this->GetSequenceFieldForTable($oProc,$sOldTableName,$sField);
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if ($DEBUG) { echo ' - ' . $sField; }
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if ($sSequenceName)
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{
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$oProc->m_odb->query("SELECT last_value FROM seq_$sOldTableName",__LINE__,__FILE__);
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$oProc->m_odb->next_record();
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$lastval = $oProc->m_odb->f(0);
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if ($DEBUG) { echo '<br>RenameTable(): dropping old sequence: ' . $sSequenceName . ' used on field: ' . $sField; }
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$this->DropSequenceForTable($oProc,$sOldTableName);
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if ($lastval)
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{
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$lastval = ' start ' . $lastval;
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}
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$this->GetSequenceSQL($sNewTableName,$sSequenceSQL);
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if ($DEBUG) { echo '<br>RenameTable(): Making new sequence using: ' . $sSequenceSQL . $lastval; }
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$oProc->m_odb->query($sSequenceSQL . $lastval,__LINE__,__FILE__);
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if ($DEBUG) { echo '<br>RenameTable(): Altering column default for: ' . $sField; }
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$oProc->m_odb->query("ALTER TABLE $sOldTableName ALTER $sField SET DEFAULT nextval('seq_" . $sNewTableName . "')",__LINE__,__FILE__);
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}
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$oProc->m_odb->query("DROP INDEX " . $sOldTableName . "_pkey",__LINE__,__FILE__);
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return !!($oProc->m_odb->query("ALTER TABLE $sOldTableName RENAME TO $sNewTableName"));
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}
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function RenameColumn($oProc, &$aTables, $sTableName, $sOldColumnName, $sNewColumnName, $bCopyData = true)
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{
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// This really needs testing - it can affect primary keys, and other table-related objects
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// like sequences and such
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|
if ($bCopyData)
|
|
{
|
|
$oProc->m_odb->query("SELECT * INTO $sTableName" . "_tmp FROM $sTableName");
|
|
}
|
|
|
|
$this->DropTable($oProc, $aTables, $sTableName);
|
|
|
|
if (!$bCopyData)
|
|
{
|
|
return $this->CreateTable($oProc, $aTables, $sTableName, $oProc->m_aTables[$sTableName], false);
|
|
}
|
|
|
|
$this->CreateTable($oProc, $aTables, $sTableName, $aTables[$sTableName], True);
|
|
$this->_GetColumns($oProc, $sTableName . "_tmp", $sColumns);
|
|
$query = "INSERT INTO $sTableName SELECT $sColumns FROM $sTableName" . "_tmp";
|
|
|
|
$bRet = !!($oProc->m_odb->query($query));
|
|
return ($bRet && $this->DropTable($oProc, $aTables, $sTableName . "_tmp"));
|
|
}
|
|
|
|
function AlterColumn($oProc, &$aTables, $sTableName, $sColumnName, &$aColumnDef, $bCopyData = true)
|
|
{
|
|
if ($bCopyData)
|
|
{
|
|
$oProc->m_odb->query("SELECT * INTO $sTableName" . "_tmp FROM $sTableName");
|
|
}
|
|
|
|
$this->DropTable($oProc, $aTables, $sTableName);
|
|
|
|
if (!$bCopyData)
|
|
{
|
|
return $this->CreateTable($oProc, $aTables, $sTableName, $aTables[$sTableName], True);
|
|
}
|
|
|
|
$this->CreateTable($oProc, $aTables, $sTableName, $aTables[$sTableName], True);
|
|
$this->_GetColumns($oProc, $sTableName . "_tmp", $sColumns, '', $sColumnName, $aColumnDef['type'] == 'auto' ? 'int4' : $aColumnDef['type']);
|
|
|
|
// TODO: analyze the type of change and determine if this is used or _CopyAlteredTable
|
|
// this is a performance consideration only, _CopyAlteredTable should be safe
|
|
//$query = "INSERT INTO $sTableName SELECT $sColumns FROM $sTableName" . "_tmp";
|
|
//$bRet = !!($oProc->m_odb->query($query));
|
|
|
|
$bRet = $this->_CopyAlteredTable($oProc, $aTables, $sTableName . '_tmp', $sTableName);
|
|
|
|
return ($bRet && $this->DropTable($oProc, $aTables, $sTableName . "_tmp"));
|
|
}
|
|
|
|
function AddColumn($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 = sprintf("CREATE SEQUENCE seq_%s", $sTableName);
|
|
return true;
|
|
}
|
|
|
|
function CreateTable($oProc, $aTables, $sTableName, $aTableDef, $bCreateSequence = true)
|
|
{
|
|
global $DEBUG;
|
|
if ($oProc->_GetTableSQL($sTableName, $aTableDef, $sTableSQL, $sSequenceSQL))
|
|
{
|
|
// create sequence first since it will be needed for default
|
|
if ($bCreateSequence && $sSequenceSQL != "")
|
|
{
|
|
if ($DEBUG) { echo '<br>Making sequence using: ' . $sSequenceSQL; }
|
|
$oProc->m_odb->query($sSequenceSQL);
|
|
}
|
|
|
|
$query = "CREATE TABLE $sTableName ($sTableSQL)";
|
|
|
|
return !!($oProc->m_odb->query($query));
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
?>
|