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<?php
/*
* $Id: Pgsql.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Connection_Pgsql
*
* @package Doctrine
* @subpackage Connection
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
* @version $Revision: 7490 $
* @link www.doctrine-project.org
* @since 1.0
*/
class Doctrine_Connection_Pgsql extends Doctrine_Connection_Common
{
/**
* @var string $driverName the name of this connection driver
*/
protected $driverName = 'Pgsql';
/**
* the constructor
*
* @param Doctrine_Manager $manager
* @param PDO $pdo database handle
*/
public function __construct(Doctrine_Manager $manager, $adapter)
{
// initialize all driver options
$this->supported = array(
'sequences' => true,
'indexes' => true,
'affected_rows' => true,
'summary_functions' => true,
'order_by_text' => true,
'transactions' => true,
'savepoints' => true,
'current_id' => true,
'limit_queries' => true,
'LOBs' => true,
'replace' => 'emulated',
'sub_selects' => true,
'auto_increment' => 'emulated',
'primary_key' => true,
'result_introspection' => true,
'prepared_statements' => true,
'identifier_quoting' => true,
'pattern_escaping' => true,
);
$this->properties['string_quoting'] = array('start' => "'",
'end' => "'",
'escape' => "'",
'escape_pattern' => '\\');
$this->properties['identifier_quoting'] = array('start' => '"',
'end' => '"',
'escape' => '"');
parent::__construct($manager, $adapter);
}
/**
* Set the charset on the current connection
*
* @param string charset
*
* @return void
*/
public function setCharset($charset)
{
$query = 'SET NAMES '.$this->quote($charset);
$this->exec($query);
parent::setCharset($charset);
}
/**
* convertBoolean
* some drivers need the boolean values to be converted into integers
* when using DQL API
*
* This method takes care of that conversion
*
* @param array $item
* @return void
*/
public function convertBooleans($item)
{
if (is_array($item)) {
foreach ($item as $key => $value) {
if (is_bool($value)) {
$item[$key] = ($value) ? 'true' : 'false';
}
}
} else {
if (is_bool($item) || is_numeric($item)) {
$item = ($item) ? 'true' : 'false';
}
}
return $item;
}
/**
* Changes a query string for various DBMS specific reasons
*
* @param string $query query to modify
* @param integer $limit limit the number of rows
* @param integer $offset start reading from given offset
* @param boolean $isManip if the query is a DML query
* @return string modified query
*/
public function modifyLimitQuery($query, $limit = false, $offset = false, $isManip = false)
{
if ($limit > 0) {
$query = rtrim($query);
if (substr($query, -1) == ';') {
$query = substr($query, 0, -1);
}
if ($isManip) {
$manip = preg_replace('/^(DELETE FROM|UPDATE).*$/', '\\1', $query);
$from = $match[2];
$where = $match[3];
$query = $manip . ' ' . $from . ' WHERE ctid=(SELECT ctid FROM '
. $from . ' ' . $where . ' LIMIT ' . (int)$limit . ')';
} else {
if ( ! empty($limit)) {
$query .= ' LIMIT ' . (int)$limit;
}
if ( ! empty($offset)) {
$query .= ' OFFSET ' . (int)$offset;
}
}
}
return $query;
}
/**
* return version information about the server
*
* @param string $native determines if the raw version string should be returned
* @return array|string an array or string with version information
*/
public function getServerVersion($native = false)
{
$query = 'SHOW SERVER_VERSION';
$serverInfo = $this->fetchOne($query);
if ( ! $native) {
$tmp = explode('.', $serverInfo, 3);
if (empty($tmp[2]) && isset($tmp[1])
&& preg_match('/(\d+)(.*)/', $tmp[1], $tmp2)
) {
$serverInfo = array(
'major' => $tmp[0],
'minor' => $tmp2[1],
'patch' => null,
'extra' => $tmp2[2],
'native' => $serverInfo,
);
} else {
$serverInfo = array(
'major' => isset($tmp[0]) ? $tmp[0] : null,
'minor' => isset($tmp[1]) ? $tmp[1] : null,
'patch' => isset($tmp[2]) ? $tmp[2] : null,
'extra' => null,
'native' => $serverInfo,
);
}
}
return $serverInfo;
}
/**
* Inserts a table row with specified data.
*
* @param Doctrine_Table $table The table to insert data into.
* @param array $values An associative array containing column-value pairs.
* Values can be strings or Doctrine_Expression instances.
* @return integer the number of affected rows. Boolean false if empty value array was given,
*/
public function insert(Doctrine_Table $table, array $fields)
{
$tableName = $table->getTableName();
// column names are specified as array keys
$cols = array();
// the query VALUES will contain either expresions (eg 'NOW()') or ?
$a = array();
foreach ($fields as $fieldName => $value) {
if ($table->isIdentifier($fieldName)
&& $table->isIdentifierAutoincrement()
&& $value == null) {
// Autoincrement fields should not be added to the insert statement
// if their value is null
unset($fields[$fieldName]);
continue;
}
$cols[] = $this->quoteIdentifier($table->getColumnName($fieldName));
if ($value instanceof Doctrine_Expression) {
$a[] = $value->getSql();
unset($fields[$fieldName]);
} else {
$a[] = '?';
}
}
if (count($fields) == 0) {
// Real fix #1786 and #2327 (default values when table is just 'id' as PK)
return $this->exec('INSERT INTO ' . $this->quoteIdentifier($tableName)
. ' '
. ' VALUES (DEFAULT)');
}
// build the statement
$query = 'INSERT INTO ' . $this->quoteIdentifier($tableName)
. ' (' . implode(', ', $cols) . ')'
. ' VALUES (' . implode(', ', $a) . ')';
return $this->exec($query, array_values($fields));
}
}