Current File : /home/vacivi36/ava/lib/adodb/drivers/adodb-pdo_pgsql.inc.php
<?php
/**
* PDO PostgreSQL (pgsql) driver
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
class ADODB_pdo_pgsql extends ADODB_pdo {
var $metaDatabasesSQL = "select datname from pg_database where datname not in ('template0','template1') order by 1";
var $metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%'
and tablename not in ('sql_features', 'sql_implementation_info', 'sql_languages',
'sql_packages', 'sql_sizing', 'sql_sizing_profiles')
union
select viewname,'V' from pg_views where viewname not like 'pg\_%'";
//"select tablename from pg_tables where tablename not like 'pg_%' order by 1";
var $isoDates = true; // accepts dates in ISO format
var $sysDate = "CURRENT_DATE";
var $sysTimeStamp = "CURRENT_TIMESTAMP";
var $blobEncodeType = 'C';
var $metaColumnsSQL = "SELECT a.attname,t.typname,a.attlen,a.atttypmod,a.attnotnull,a.atthasdef,a.attnum
FROM pg_class c, pg_attribute a,pg_type t
WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s')) and a.attname not like '....%%'
AND a.attnum > 0 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";
// used when schema defined
var $metaColumnsSQL1 = "SELECT a.attname, t.typname, a.attlen, a.atttypmod, a.attnotnull, a.atthasdef, a.attnum
FROM pg_class c, pg_attribute a, pg_type t, pg_namespace n
WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s'))
and c.relnamespace=n.oid and n.nspname='%s'
and a.attname not like '....%%' AND a.attnum > 0
AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";
// get primary key etc -- from Freek Dijkstra
var $metaKeySQL = "SELECT ic.relname AS index_name, a.attname AS column_name,i.indisunique AS unique_key, i.indisprimary AS primary_key
FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a WHERE bc.oid = i.indrelid AND ic.oid = i.indexrelid AND (i.indkey[0] = a.attnum OR i.indkey[1] = a.attnum OR i.indkey[2] = a.attnum OR i.indkey[3] = a.attnum OR i.indkey[4] = a.attnum OR i.indkey[5] = a.attnum OR i.indkey[6] = a.attnum OR i.indkey[7] = a.attnum) AND a.attrelid = bc.oid AND bc.relname = '%s'";
var $hasAffectedRows = true;
var $hasLimit = false; // set to true for pgsql 7 only. support pgsql/mysql SELECT * FROM TABLE LIMIT 10
// below suggested by Freek Dijkstra
var $true = 't'; // string that represents TRUE for a database
var $false = 'f'; // string that represents FALSE for a database
var $fmtDate = "'Y-m-d'"; // used by DBDate() as the default date format used by the database
var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
var $hasMoveFirst = true;
var $hasGenID = true;
var $_genIDSQL = "SELECT NEXTVAL('%s')";
var $_genSeqSQL = "CREATE SEQUENCE %s START %s";
var $_dropSeqSQL = "DROP SEQUENCE %s";
var $metaDefaultsSQL = "SELECT d.adnum as num, d.adsrc as def from pg_attrdef d, pg_class c where d.adrelid=c.oid and c.relname='%s' order by d.adnum";
var $random = 'random()'; /// random function
var $concat_operator='||';
function _init($parentDriver)
{
$parentDriver->hasTransactions = false; ## <<< BUG IN PDO pgsql driver
$parentDriver->hasInsertID = true;
$parentDriver->_nestedSQL = true;
}
function ServerInfo()
{
$arr['description'] = ADOConnection::GetOne("select version()");
$arr['version'] = ADOConnection::_findvers($arr['description']);
return $arr;
}
function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
{
$nrows = (int) $nrows;
$offset = (int) $offset;
$offsetStr = ($offset >= 0) ? " OFFSET $offset" : '';
$limitStr = ($nrows >= 0) ? " LIMIT $nrows" : '';
if ($secs2cache)
$rs = $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr);
else
$rs = $this->Execute($sql."$limitStr$offsetStr",$inputarr);
return $rs;
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
$info = $this->ServerInfo();
if ($info['version'] >= 7.3) {
$this->metaTablesSQL = "
select tablename,'T' from pg_tables
where tablename not like 'pg\_%' and schemaname not in ( 'pg_catalog','information_schema')
union
select viewname,'V' from pg_views
where viewname not like 'pg\_%' and schemaname not in ( 'pg_catalog','information_schema')";
}
if ($mask) {
$save = $this->metaTablesSQL;
$mask = $this->qstr(strtolower($mask));
if ($info['version']>=7.3)
$this->metaTablesSQL = "
select tablename,'T' from pg_tables
where tablename like $mask and schemaname not in ( 'pg_catalog','information_schema')
union
select viewname,'V' from pg_views
where viewname like $mask and schemaname not in ( 'pg_catalog','information_schema')";
else
$this->metaTablesSQL = "
select tablename,'T' from pg_tables where tablename like $mask
union
select viewname,'V' from pg_views where viewname like $mask";
}
$ret = ADOConnection::MetaTables($ttype,$showSchema);
if ($mask) {
$this->metaTablesSQL = $save;
}
return $ret;
}
function MetaColumns($table,$normalize=true)
{
global $ADODB_FETCH_MODE;
$schema = false;
$this->_findschema($table,$schema);
if ($normalize) $table = strtolower($table);
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
if ($schema) $rs = $this->Execute(sprintf($this->metaColumnsSQL1,$table,$table,$schema));
else $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if ($rs === false) {
$false = false;
return $false;
}
if (!empty($this->metaKeySQL)) {
// If we want the primary keys, we have to issue a separate query
// Of course, a modified version of the metaColumnsSQL query using a
// LEFT JOIN would have been much more elegant, but postgres does
// not support OUTER JOINS. So here is the clumsy way.
$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
$rskey = $this->Execute(sprintf($this->metaKeySQL,($table)));
// fetch all result in once for performance.
$keys = $rskey->GetArray();
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
$rskey->Close();
unset($rskey);
}
$rsdefa = array();
if (!empty($this->metaDefaultsSQL)) {
$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
$sql = sprintf($this->metaDefaultsSQL, ($table));
$rsdef = $this->Execute($sql);
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if ($rsdef) {
while (!$rsdef->EOF) {
$num = $rsdef->fields['num'];
$s = $rsdef->fields['def'];
if (strpos($s,'::')===false && substr($s, 0, 1) == "'") { /* quoted strings hack... for now... fixme */
$s = substr($s, 1);
$s = substr($s, 0, strlen($s) - 1);
}
$rsdefa[$num] = $s;
$rsdef->MoveNext();
}
} else {
ADOConnection::outp( "==> SQL => " . $sql);
}
unset($rsdef);
}
$retarr = array();
while (!$rs->EOF) {
$fld = new ADOFieldObject();
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
$fld->max_length = $rs->fields[2];
if ($fld->max_length <= 0) $fld->max_length = $rs->fields[3]-4;
if ($fld->max_length <= 0) $fld->max_length = -1;
if ($fld->type == 'numeric') {
$fld->scale = $fld->max_length & 0xFFFF;
$fld->max_length >>= 16;
}
// dannym
// 5 hasdefault; 6 num-of-column
$fld->has_default = ($rs->fields[5] == 't');
if ($fld->has_default) {
$fld->default_value = $rsdefa[$rs->fields[6]];
}
//Freek
if ($rs->fields[4] == $this->true) {
$fld->not_null = true;
}
// Freek
if (is_array($keys)) {
foreach($keys as $key) {
if ($fld->name == $key['column_name'] AND $key['primary_key'] == $this->true)
$fld->primary_key = true;
if ($fld->name == $key['column_name'] AND $key['unique_key'] == $this->true)
$fld->unique = true; // What name is more compatible?
}
}
if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
else $retarr[($normalize) ? strtoupper($fld->name) : $fld->name] = $fld;
$rs->MoveNext();
}
$rs->Close();
if (empty($retarr)) {
$false = false;
return $false;
} else return $retarr;
}
function BeginTrans()
{
if (!$this->hasTransactions) {
return false;
}
if ($this->transOff) {
return true;
}
$this->transCnt += 1;
return $this->_connectionID->beginTransaction();
}
function CommitTrans($ok = true)
{
if (!$this->hasTransactions) {
return false;
}
if ($this->transOff) {
return true;
}
if (!$ok) {
return $this->RollbackTrans();
}
if ($this->transCnt) {
$this->transCnt -= 1;
}
$this->_autocommit = true;
$ret = $this->_connectionID->commit();
return $ret;
}
function RollbackTrans()
{
if (!$this->hasTransactions) {
return false;
}
if ($this->transOff) {
return true;
}
if ($this->transCnt) {
$this->transCnt -= 1;
}
$this->_autocommit = true;
$ret = $this->_connectionID->rollback();
return $ret;
}
function SetTransactionMode( $transaction_mode )
{
$this->_transmode = $transaction_mode;
if (empty($transaction_mode)) {
$this->_connectionID->query('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
return;
}
if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
$this->_connectionID->query("SET TRANSACTION ".$transaction_mode);
}
/**
* Returns a driver-specific format for a bind parameter
*
* Unlike the native driver, we use :name parameters
* instead of offsets
*
* @param string $name
* @param string $type (ignored in driver)
*
* @return string
*/
public function param($name,$type='C') {
if (!$name) {
return '';
}
return sprintf(':%s', $name);
}
}
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