398 lines
10 KiB
PHP
398 lines
10 KiB
PHP
<?php
|
|
/*
|
|
V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.
|
|
Released under both BSD license and Lesser GPL library license.
|
|
Whenever there is any discrepancy between the two licenses,
|
|
the BSD license will take precedence.
|
|
|
|
Latest version is available at http://adodb.sourceforge.net
|
|
|
|
SQLite info: http://www.hwaci.com/sw/sqlite/
|
|
|
|
Install Instructions:
|
|
====================
|
|
1. Place this in adodb/drivers
|
|
2. Rename the file, remove the .txt prefix.
|
|
*/
|
|
|
|
// security - hide paths
|
|
if (!defined('ADODB_DIR')) die();
|
|
|
|
class ADODB_sqlite extends ADOConnection {
|
|
var $databaseType = "sqlite";
|
|
var $replaceQuote = "''"; // string to use to replace quotes
|
|
var $concat_operator='||';
|
|
var $_errorNo = 0;
|
|
var $hasLimit = true;
|
|
var $hasInsertID = true; /// supports autoincrement ID?
|
|
var $hasAffectedRows = true; /// supports affected rows for update/delete?
|
|
var $metaTablesSQL = "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name";
|
|
var $sysDate = "adodb_date('Y-m-d')";
|
|
var $sysTimeStamp = "adodb_date('Y-m-d H:i:s')";
|
|
var $fmtTimeStamp = "'Y-m-d H:i:s'";
|
|
|
|
function ADODB_sqlite()
|
|
{
|
|
}
|
|
|
|
/*
|
|
function __get($name)
|
|
{
|
|
switch($name) {
|
|
case 'sysDate': return "'".date($this->fmtDate)."'";
|
|
case 'sysTimeStamp' : return "'".date($this->sysTimeStamp)."'";
|
|
}
|
|
}*/
|
|
|
|
function ServerInfo()
|
|
{
|
|
$arr['version'] = sqlite_libversion();
|
|
$arr['description'] = 'SQLite ';
|
|
$arr['encoding'] = sqlite_libencoding();
|
|
return $arr;
|
|
}
|
|
|
|
function BeginTrans()
|
|
{
|
|
if ($this->transOff) return true;
|
|
$ret = $this->Execute("BEGIN TRANSACTION");
|
|
$this->transCnt += 1;
|
|
return true;
|
|
}
|
|
|
|
function CommitTrans($ok=true)
|
|
{
|
|
if ($this->transOff) return true;
|
|
if (!$ok) return $this->RollbackTrans();
|
|
$ret = $this->Execute("COMMIT");
|
|
if ($this->transCnt>0)$this->transCnt -= 1;
|
|
return !empty($ret);
|
|
}
|
|
|
|
function RollbackTrans()
|
|
{
|
|
if ($this->transOff) return true;
|
|
$ret = $this->Execute("ROLLBACK");
|
|
if ($this->transCnt>0)$this->transCnt -= 1;
|
|
return !empty($ret);
|
|
}
|
|
|
|
// mark newnham
|
|
function &MetaColumns($tab)
|
|
{
|
|
global $ADODB_FETCH_MODE;
|
|
$false = false;
|
|
$save = $ADODB_FETCH_MODE;
|
|
$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
|
|
if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
|
|
$rs = $this->Execute("PRAGMA table_info('$tab')");
|
|
if (isset($savem)) $this->SetFetchMode($savem);
|
|
if (!$rs) {
|
|
$ADODB_FETCH_MODE = $save;
|
|
return $false;
|
|
}
|
|
$arr = array();
|
|
while ($r = $rs->FetchRow()) {
|
|
$type = explode('(',$r['type']);
|
|
$size = '';
|
|
if (sizeof($type)==2)
|
|
$size = trim($type[1],')');
|
|
$fn = strtoupper($r['name']);
|
|
$fld = new ADOFieldObject;
|
|
$fld->name = $r['name'];
|
|
$fld->type = $type[0];
|
|
$fld->max_length = $size;
|
|
$fld->not_null = $r['notnull'];
|
|
$fld->default_value = $r['dflt_value'];
|
|
$fld->scale = 0;
|
|
if ($save == ADODB_FETCH_NUM) $arr[] = $fld;
|
|
else $arr[strtoupper($fld->name)] = $fld;
|
|
}
|
|
$rs->Close();
|
|
$ADODB_FETCH_MODE = $save;
|
|
return $arr;
|
|
}
|
|
|
|
function _init($parentDriver)
|
|
{
|
|
|
|
$parentDriver->hasTransactions = false;
|
|
$parentDriver->hasInsertID = true;
|
|
}
|
|
|
|
function _insertid()
|
|
{
|
|
return sqlite_last_insert_rowid($this->_connectionID);
|
|
}
|
|
|
|
function _affectedrows()
|
|
{
|
|
return sqlite_changes($this->_connectionID);
|
|
}
|
|
|
|
function ErrorMsg()
|
|
{
|
|
if ($this->_logsql) return $this->_errorMsg;
|
|
return ($this->_errorNo) ? sqlite_error_string($this->_errorNo) : '';
|
|
}
|
|
|
|
function ErrorNo()
|
|
{
|
|
return $this->_errorNo;
|
|
}
|
|
|
|
function SQLDate($fmt, $col=false)
|
|
{
|
|
$fmt = $this->qstr($fmt);
|
|
return ($col) ? "adodb_date2($fmt,$col)" : "adodb_date($fmt)";
|
|
}
|
|
|
|
|
|
function _createFunctions()
|
|
{
|
|
@sqlite_create_function($this->_connectionID, 'adodb_date', 'adodb_date', 1);
|
|
@sqlite_create_function($this->_connectionID, 'adodb_date2', 'adodb_date2', 2);
|
|
}
|
|
|
|
|
|
// returns true or false
|
|
function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
|
|
{
|
|
if (!function_exists('sqlite_open')) return null;
|
|
if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename;
|
|
|
|
$this->_connectionID = sqlite_open($argHostname);
|
|
if ($this->_connectionID === false) return false;
|
|
$this->_createFunctions();
|
|
return true;
|
|
}
|
|
|
|
// returns true or false
|
|
function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
|
|
{
|
|
if (!function_exists('sqlite_open')) return null;
|
|
if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename;
|
|
|
|
$this->_connectionID = sqlite_popen($argHostname);
|
|
if ($this->_connectionID === false) return false;
|
|
$this->_createFunctions();
|
|
return true;
|
|
}
|
|
|
|
// returns query ID if successful, otherwise false
|
|
function _query($sql,$inputarr=false)
|
|
{
|
|
$rez = sqlite_query($sql,$this->_connectionID);
|
|
if (!$rez) {
|
|
$this->_errorNo = sqlite_last_error($this->_connectionID);
|
|
}
|
|
|
|
return $rez;
|
|
}
|
|
|
|
function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
|
|
{
|
|
$offsetStr = ($offset >= 0) ? " OFFSET $offset" : '';
|
|
$limitStr = ($nrows >= 0) ? " LIMIT $nrows" : ($offset >= 0 ? ' LIMIT 999999999' : '');
|
|
if ($secs2cache)
|
|
$rs =& $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr);
|
|
else
|
|
$rs =& $this->Execute($sql."$limitStr$offsetStr",$inputarr);
|
|
|
|
return $rs;
|
|
}
|
|
|
|
/*
|
|
This algorithm is not very efficient, but works even if table locking
|
|
is not available.
|
|
|
|
Will return false if unable to generate an ID after $MAXLOOPS attempts.
|
|
*/
|
|
var $_genSeqSQL = "create table %s (id integer)";
|
|
|
|
function GenID($seq='adodbseq',$start=1)
|
|
{
|
|
// if you have to modify the parameter below, your database is overloaded,
|
|
// or you need to implement generation of id's yourself!
|
|
$MAXLOOPS = 100;
|
|
//$this->debug=1;
|
|
while (--$MAXLOOPS>=0) {
|
|
@($num = $this->GetOne("select id from $seq"));
|
|
if ($num === false) {
|
|
$this->Execute(sprintf($this->_genSeqSQL ,$seq));
|
|
$start -= 1;
|
|
$num = '0';
|
|
$ok = $this->Execute("insert into $seq values($start)");
|
|
if (!$ok) return false;
|
|
}
|
|
$this->Execute("update $seq set id=id+1 where id=$num");
|
|
|
|
if ($this->affected_rows() > 0) {
|
|
$num += 1;
|
|
$this->genID = $num;
|
|
return $num;
|
|
}
|
|
}
|
|
if ($fn = $this->raiseErrorFn) {
|
|
$fn($this->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function CreateSequence($seqname='adodbseq',$start=1)
|
|
{
|
|
if (empty($this->_genSeqSQL)) return false;
|
|
$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
|
|
if (!$ok) return false;
|
|
$start -= 1;
|
|
return $this->Execute("insert into $seqname values($start)");
|
|
}
|
|
|
|
var $_dropSeqSQL = 'drop table %s';
|
|
function DropSequence($seqname)
|
|
{
|
|
if (empty($this->_dropSeqSQL)) return false;
|
|
return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
|
|
}
|
|
|
|
// returns true or false
|
|
function _close()
|
|
{
|
|
return @sqlite_close($this->_connectionID);
|
|
}
|
|
|
|
function &MetaIndexes($table, $primary = FALSE, $owner=false)
|
|
{
|
|
$false = false;
|
|
// save old fetch mode
|
|
global $ADODB_FETCH_MODE;
|
|
$save = $ADODB_FETCH_MODE;
|
|
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
|
|
if ($this->fetchMode !== FALSE) {
|
|
$savem = $this->SetFetchMode(FALSE);
|
|
}
|
|
$SQL=sprintf("SELECT name,sql FROM sqlite_master WHERE type='index' AND tbl_name='%s'", strtolower($table));
|
|
$rs = $this->Execute($SQL);
|
|
if (!is_object($rs)) {
|
|
if (isset($savem))
|
|
$this->SetFetchMode($savem);
|
|
$ADODB_FETCH_MODE = $save;
|
|
return $false;
|
|
}
|
|
|
|
$indexes = array ();
|
|
while ($row = $rs->FetchRow()) {
|
|
if ($primary && preg_match("/primary/i",$row[1]) == 0) continue;
|
|
if (!isset($indexes[$row[0]])) {
|
|
|
|
$indexes[$row[0]] = array(
|
|
'unique' => preg_match("/unique/i",$row[1]),
|
|
'columns' => array());
|
|
}
|
|
/**
|
|
* There must be a more elegant way of doing this,
|
|
* the index elements appear in the SQL statement
|
|
* in cols[1] between parentheses
|
|
* e.g CREATE UNIQUE INDEX ware_0 ON warehouse (org,warehouse)
|
|
*/
|
|
$cols = explode("(",$row[1]);
|
|
$cols = explode(")",$cols[1]);
|
|
array_pop($cols);
|
|
$indexes[$row[0]]['columns'] = $cols;
|
|
}
|
|
if (isset($savem)) {
|
|
$this->SetFetchMode($savem);
|
|
$ADODB_FETCH_MODE = $save;
|
|
}
|
|
return $indexes;
|
|
}
|
|
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------------------
|
|
Class Name: Recordset
|
|
--------------------------------------------------------------------------------------*/
|
|
|
|
class ADORecordset_sqlite extends ADORecordSet {
|
|
|
|
var $databaseType = "sqlite";
|
|
var $bind = false;
|
|
|
|
function ADORecordset_sqlite($queryID,$mode=false)
|
|
{
|
|
|
|
if ($mode === false) {
|
|
global $ADODB_FETCH_MODE;
|
|
$mode = $ADODB_FETCH_MODE;
|
|
}
|
|
switch($mode) {
|
|
case ADODB_FETCH_NUM: $this->fetchMode = SQLITE_NUM; break;
|
|
case ADODB_FETCH_ASSOC: $this->fetchMode = SQLITE_ASSOC; break;
|
|
default: $this->fetchMode = SQLITE_BOTH; break;
|
|
}
|
|
$this->adodbFetchMode = $mode;
|
|
|
|
$this->_queryID = $queryID;
|
|
|
|
$this->_inited = true;
|
|
$this->fields = array();
|
|
if ($queryID) {
|
|
$this->_currentRow = 0;
|
|
$this->EOF = !$this->_fetch();
|
|
@$this->_initrs();
|
|
} else {
|
|
$this->_numOfRows = 0;
|
|
$this->_numOfFields = 0;
|
|
$this->EOF = true;
|
|
}
|
|
|
|
return $this->_queryID;
|
|
}
|
|
|
|
|
|
function &FetchField($fieldOffset = -1)
|
|
{
|
|
$fld = new ADOFieldObject;
|
|
$fld->name = sqlite_field_name($this->_queryID, $fieldOffset);
|
|
$fld->type = 'VARCHAR';
|
|
$fld->max_length = -1;
|
|
return $fld;
|
|
}
|
|
|
|
function _initrs()
|
|
{
|
|
$this->_numOfRows = @sqlite_num_rows($this->_queryID);
|
|
$this->_numOfFields = @sqlite_num_fields($this->_queryID);
|
|
}
|
|
|
|
function Fields($colname)
|
|
{
|
|
if ($this->fetchMode != SQLITE_NUM) return $this->fields[$colname];
|
|
if (!$this->bind) {
|
|
$this->bind = array();
|
|
for ($i=0; $i < $this->_numOfFields; $i++) {
|
|
$o = $this->FetchField($i);
|
|
$this->bind[strtoupper($o->name)] = $i;
|
|
}
|
|
}
|
|
|
|
return $this->fields[$this->bind[strtoupper($colname)]];
|
|
}
|
|
|
|
function _seek($row)
|
|
{
|
|
return sqlite_seek($this->_queryID, $row);
|
|
}
|
|
|
|
function _fetch($ignore_fields=false)
|
|
{
|
|
$this->fields = @sqlite_fetch_array($this->_queryID,$this->fetchMode);
|
|
return !empty($this->fields);
|
|
}
|
|
|
|
function _close()
|
|
{
|
|
}
|
|
|
|
}
|
|
?>
|