mirror of
https://github.com/dg/dibi.git
synced 2025-02-25 03:12:50 +01:00
5ee6a19f93
* doc-comments changed to be compatible with phpDocumentor * DibiDriver::config() renamed to alias()
411 lines
9.8 KiB
PHP
411 lines
9.8 KiB
PHP
<?php
|
|
|
|
/**
|
|
* dibi - tiny'n'smart database abstraction layer
|
|
* ----------------------------------------------
|
|
*
|
|
* Copyright (c) 2005, 2007 David Grudl aka -dgx- (http://www.dgx.cz)
|
|
*
|
|
* This source file is subject to the "dibi license" that is bundled
|
|
* with this package in the file license.txt.
|
|
*
|
|
* For more information please see http://php7.org/dibi/
|
|
*
|
|
* @copyright Copyright (c) 2005, 2007 David Grudl
|
|
* @license http://php7.org/dibi/license dibi license
|
|
* @link http://php7.org/dibi/
|
|
* @package dibi
|
|
*/
|
|
|
|
|
|
/**
|
|
* The dibi driver for PostgreSQL database
|
|
*
|
|
* Connection options:
|
|
* - 'database' (or 'string') - connection string
|
|
* - 'persistent' - try to find a persistent link?
|
|
* - 'charset' - sets the encoding
|
|
*
|
|
* @author David Grudl
|
|
* @copyright Copyright (c) 2005, 2007 David Grudl
|
|
* @package dibi
|
|
* @version $Revision$ $Date$
|
|
*/
|
|
class DibiPostgreDriver extends DibiDriver
|
|
{
|
|
/**
|
|
* Describes how convert some datatypes to SQL command
|
|
* @var array
|
|
*/
|
|
public $formats = array(
|
|
'TRUE' => "TRUE",
|
|
'FALSE' => "FALSE",
|
|
'date' => "'Y-m-d'",
|
|
'datetime' => "'Y-m-d H:i:s'",
|
|
);
|
|
|
|
/**
|
|
* Affected rows
|
|
* @var mixed
|
|
*/
|
|
private $affectedRows = FALSE;
|
|
|
|
|
|
|
|
/**
|
|
* Creates object and (optionally) connects to a database
|
|
*
|
|
* @param array connect configuration
|
|
* @throws DibiException
|
|
*/
|
|
public function __construct(array $config)
|
|
{
|
|
self::alias($config, 'database', 'string');
|
|
self::alias($config, 'type');
|
|
parent::__construct($config);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Connects to a database
|
|
*
|
|
* @throws DibiException
|
|
* @return resource
|
|
*/
|
|
protected function doConnect()
|
|
{
|
|
if (!extension_loaded('pgsql')) {
|
|
throw new DibiException("PHP extension 'pgsql' is not loaded");
|
|
}
|
|
|
|
$config = $this->getConfig();
|
|
|
|
// some errors aren't handled. Must use $php_errormsg
|
|
if (function_exists('ini_set')) {
|
|
$save = ini_set('track_errors', TRUE);
|
|
}
|
|
|
|
$php_errormsg = '';
|
|
|
|
if (isset($config['persistent'])) {
|
|
$connection = @pg_connect($config['database'], PGSQL_CONNECT_FORCE_NEW);
|
|
} else {
|
|
$connection = @pg_pconnect($config['database'], PGSQL_CONNECT_FORCE_NEW);
|
|
}
|
|
|
|
if (function_exists('ini_set')) {
|
|
ini_set('track_errors', $save);
|
|
}
|
|
|
|
if (!is_resource($connection)) {
|
|
throw new DibiDatabaseException($php_errormsg);
|
|
}
|
|
|
|
if (isset($config['charset'])) {
|
|
@pg_set_client_encoding($connection, $config['charset']);
|
|
// don't handle this error...
|
|
}
|
|
|
|
return $connection;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Disconnects from a database
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function doDisconnect()
|
|
{
|
|
pg_close($this->getConnection());
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Internal: Executes the SQL query
|
|
*
|
|
* @param string SQL statement.
|
|
* @param bool update affected rows?
|
|
* @return DibiResult Result set object
|
|
* @throws DibiDatabaseException
|
|
*/
|
|
protected function doQuery($sql, $silent = FALSE)
|
|
{
|
|
$connection = $this->getConnection();
|
|
$res = @pg_query($connection, $sql);
|
|
|
|
if ($res === FALSE) {
|
|
throw new DibiDatabaseException(pg_last_error($connection), 0, $sql);
|
|
}
|
|
|
|
if (is_resource($res)) {
|
|
if (!$silent) {
|
|
$this->affectedRows = pg_affected_rows($res);
|
|
if ($this->affectedRows < 0) $this->affectedRows = FALSE;
|
|
}
|
|
return new DibiPostgreResult($res);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Gets the number of affected rows by the last INSERT, UPDATE or DELETE query
|
|
*
|
|
* @return int number of rows or FALSE on error
|
|
*/
|
|
public function affectedRows()
|
|
{
|
|
return $this->affectedRows;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query
|
|
*
|
|
* @return int|FALSE int on success or FALSE on failure
|
|
*/
|
|
public function insertId($sequence = NULL)
|
|
{
|
|
if ($sequence === NULL) {
|
|
// PostgreSQL 8.1 is needed
|
|
$res = $this->doQuery("SELECT LASTVAL() AS seq", TRUE);
|
|
} else {
|
|
$res = $this->doQuery("SELECT CURRVAL('$sequence') AS seq", TRUE);
|
|
}
|
|
|
|
if (is_resource($res)) {
|
|
$row = pg_fetch_assoc($res);
|
|
pg_free_result($res);
|
|
return $row['seq'];
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Begins a transaction (if supported).
|
|
* @return void
|
|
*/
|
|
public function begin()
|
|
{
|
|
$this->doQuery('BEGIN', TRUE);
|
|
dibi::notify('begin', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Commits statements in a transaction.
|
|
* @return void
|
|
*/
|
|
public function commit()
|
|
{
|
|
$this->doQuery('COMMIT', TRUE);
|
|
dibi::notify('commit', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Rollback changes in a transaction.
|
|
* @return void
|
|
*/
|
|
public function rollback()
|
|
{
|
|
$this->doQuery('ROLLBACK', TRUE);
|
|
dibi::notify('rollback', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Returns last error
|
|
*
|
|
* @return array with items 'message' and 'code'
|
|
*/
|
|
public function errorInfo()
|
|
{
|
|
return array(
|
|
'message' => pg_last_error($this->getConnection()),
|
|
'code' => NULL,
|
|
);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Escapes the string
|
|
*
|
|
* @param string unescaped string
|
|
* @param bool quote string?
|
|
* @return string escaped and optionally quoted string
|
|
*/
|
|
public function escape($value, $appendQuotes = TRUE)
|
|
{
|
|
return $appendQuotes
|
|
? "'" . pg_escape_string($value) . "'"
|
|
: pg_escape_string($value);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Delimites identifier (table's or column's name, etc.)
|
|
*
|
|
* @param string identifier
|
|
* @return string delimited identifier
|
|
*/
|
|
public function delimite($value)
|
|
{
|
|
$value = str_replace('"', '""', $value);
|
|
return '"' . str_replace('.', '"."', $value) . '"';
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Gets a information of the current database.
|
|
*
|
|
* @return DibiReflection
|
|
*/
|
|
public function getDibiReflection()
|
|
{
|
|
throw new BadMethodCallException(__METHOD__ . ' is not implemented');
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Injects LIMIT/OFFSET to the SQL query
|
|
*
|
|
* @param string &$sql The SQL query that will be modified.
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return void
|
|
*/
|
|
public function applyLimit(&$sql, $limit, $offset = 0)
|
|
{
|
|
if ($limit >= 0)
|
|
$sql .= ' LIMIT ' . (int) $limit;
|
|
|
|
if ($offset > 0)
|
|
$sql .= ' OFFSET ' . (int) $offset;
|
|
}
|
|
|
|
|
|
} // class DibiPostgreDriver
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* The dibi result-set class for PostgreSQL database
|
|
*
|
|
* @author David Grudl
|
|
* @copyright Copyright (c) 2005, 2007 David Grudl
|
|
* @package dibi
|
|
* @version $Revision$ $Date$
|
|
*/
|
|
class DibiPostgreResult extends DibiResult
|
|
{
|
|
|
|
/**
|
|
* Returns the number of rows in a result set
|
|
*
|
|
* @return int
|
|
*/
|
|
public function rowCount()
|
|
{
|
|
return pg_num_rows($this->resource);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Fetches the row at current position and moves the internal cursor to the next position
|
|
* internal usage only
|
|
*
|
|
* @return array|FALSE array on success, FALSE if no next record
|
|
*/
|
|
protected function doFetch()
|
|
{
|
|
return pg_fetch_array($this->resource, NULL, PGSQL_ASSOC);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Moves cursor position without fetching row
|
|
*
|
|
* @param int the 0-based cursor pos to seek to
|
|
* @return boolean TRUE on success, FALSE if unable to seek to specified record
|
|
*/
|
|
public function seek($row)
|
|
{
|
|
return pg_result_seek($this->resource, $row);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Frees the resources allocated for this result set
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function free()
|
|
{
|
|
pg_free_result($this->resource);
|
|
}
|
|
|
|
|
|
|
|
/** this is experimental */
|
|
protected function buildMeta()
|
|
{
|
|
static $types = array(
|
|
'bool' => dibi::FIELD_BOOL,
|
|
'int2' => dibi::FIELD_INTEGER,
|
|
'int4' => dibi::FIELD_INTEGER,
|
|
'int8' => dibi::FIELD_INTEGER,
|
|
'numeric' => dibi::FIELD_FLOAT,
|
|
'float4' => dibi::FIELD_FLOAT,
|
|
'float8' => dibi::FIELD_FLOAT,
|
|
'timestamp' => dibi::FIELD_DATETIME,
|
|
'date' => dibi::FIELD_DATE,
|
|
'time' => dibi::FIELD_DATETIME,
|
|
'varchar' => dibi::FIELD_TEXT,
|
|
'bpchar' => dibi::FIELD_TEXT,
|
|
'inet' => dibi::FIELD_TEXT,
|
|
'money' => dibi::FIELD_FLOAT,
|
|
);
|
|
|
|
$count = pg_num_fields($this->resource);
|
|
$this->meta = $this->convert = array();
|
|
for ($index = 0; $index < $count; $index++) {
|
|
|
|
$info['native'] = $native = pg_field_type($this->resource, $index);
|
|
$info['length'] = pg_field_size($this->resource, $index);
|
|
$info['table'] = pg_field_table($this->resource, $index);
|
|
$info['type'] = isset($types[$native]) ? $types[$native] : dibi::FIELD_UNKNOWN;
|
|
|
|
$name = pg_field_name($this->resource, $index);
|
|
$this->meta[$name] = $info;
|
|
$this->convert[$name] = $info['type'];
|
|
}
|
|
}
|
|
|
|
|
|
} // class DibiPostgreResult
|