218 lines
5.7 KiB
PHP
218 lines
5.7 KiB
PHP
<?php
|
|
/**
|
|
* @package Joomla.Platform
|
|
* @subpackage Database
|
|
*
|
|
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
|
|
* @license GNU General Public License version 2 or later; see LICENSE
|
|
*/
|
|
|
|
defined('JPATH_PLATFORM') or die;
|
|
|
|
/**
|
|
* SQLite Query Building Class.
|
|
*
|
|
* @package Joomla.Platform
|
|
* @subpackage Database
|
|
* @since 12.1
|
|
*/
|
|
class JDatabaseQuerySqlite extends JDatabaseQueryPdo implements JDatabaseQueryPreparable, JDatabaseQueryLimitable
|
|
{
|
|
/**
|
|
* @var integer
|
|
* @since 12.1
|
|
*/
|
|
protected $limit;
|
|
|
|
/**
|
|
* @var integer
|
|
* @since 12.1
|
|
*/
|
|
protected $offset;
|
|
|
|
/**
|
|
* @var mixed
|
|
* @since 12.1
|
|
*/
|
|
protected $bounded = array();
|
|
|
|
/**
|
|
* Method to add a variable to an internal array that will be bound to a prepared SQL statement before query execution. Also
|
|
* removes a variable that has been bounded from the internal bounded array when the passed in value is null.
|
|
*
|
|
* @param string|integer $key The key that will be used in your SQL query to reference the value. Usually of
|
|
* the form ':key', but can also be an integer.
|
|
* @param mixed &$value The value that will be bound. The value is passed by reference to support output
|
|
* parameters such as those possible with stored procedures.
|
|
* @param integer $dataType Constant corresponding to a SQL datatype.
|
|
* @param integer $length The length of the variable. Usually required for OUTPUT parameters.
|
|
* @param array $driverOptions Optional driver options to be used.
|
|
*
|
|
* @return JDatabaseQuery
|
|
*
|
|
* @since 12.1
|
|
*/
|
|
public function bind($key = null, &$value = null, $dataType = PDO::PARAM_STR, $length = 0, $driverOptions = array())
|
|
{
|
|
// Case 1: Empty Key (reset $bounded array)
|
|
if (empty($key))
|
|
{
|
|
$this->bounded = array();
|
|
|
|
return $this;
|
|
}
|
|
|
|
// Case 2: Key Provided, null value (unset key from $bounded array)
|
|
if (is_null($value))
|
|
{
|
|
if (isset($this->bounded[$key]))
|
|
{
|
|
unset($this->bounded[$key]);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
$obj = new stdClass;
|
|
|
|
$obj->value = &$value;
|
|
$obj->dataType = $dataType;
|
|
$obj->length = $length;
|
|
$obj->driverOptions = $driverOptions;
|
|
|
|
// Case 3: Simply add the Key/Value into the bounded array
|
|
$this->bounded[$key] = $obj;
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the bound parameters array when key is null and returns it by reference. If a key is provided then that item is
|
|
* returned.
|
|
*
|
|
* @param mixed $key The bounded variable key to retrieve.
|
|
*
|
|
* @return mixed
|
|
*
|
|
* @since 12.1
|
|
*/
|
|
public function &getBounded($key = null)
|
|
{
|
|
if (empty($key))
|
|
{
|
|
return $this->bounded;
|
|
}
|
|
else
|
|
{
|
|
if (isset($this->bounded[$key]))
|
|
{
|
|
return $this->bounded[$key];
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Clear data from the query or a specific clause of the query.
|
|
*
|
|
* @param string $clause Optionally, the name of the clause to clear, or nothing to clear the whole query.
|
|
*
|
|
* @return JDatabaseQuery Returns this object to allow chaining.
|
|
*
|
|
* @since 12.1
|
|
*/
|
|
public function clear($clause = null)
|
|
{
|
|
switch ($clause)
|
|
{
|
|
case null:
|
|
$this->bounded = array();
|
|
break;
|
|
}
|
|
|
|
parent::clear($clause);
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Method to modify a query already in string format with the needed
|
|
* additions to make the query limited to a particular number of
|
|
* results, or start at a particular offset. This method is used
|
|
* automatically by the __toString() method if it detects that the
|
|
* query implements the JDatabaseQueryLimitable interface.
|
|
*
|
|
* @param string $query The query in string format
|
|
* @param integer $limit The limit for the result set
|
|
* @param integer $offset The offset for the result set
|
|
*
|
|
* @return string
|
|
*
|
|
* @since 12.1
|
|
*/
|
|
public function processLimit($query, $limit, $offset = 0)
|
|
{
|
|
if ($limit > 0 || $offset > 0)
|
|
{
|
|
$query .= ' LIMIT ' . $offset . ', ' . $limit;
|
|
}
|
|
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* Sets the offset and limit for the result set, if the database driver supports it.
|
|
*
|
|
* Usage:
|
|
* $query->setLimit(100, 0); (retrieve 100 rows, starting at first record)
|
|
* $query->setLimit(50, 50); (retrieve 50 rows, starting at 50th record)
|
|
*
|
|
* @param integer $limit The limit for the result set
|
|
* @param integer $offset The offset for the result set
|
|
*
|
|
* @return JDatabaseQuery Returns this object to allow chaining.
|
|
*
|
|
* @since 12.1
|
|
*/
|
|
public function setLimit($limit = 0, $offset = 0)
|
|
{
|
|
$this->limit = (int) $limit;
|
|
$this->offset = (int) $offset;
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Add to the current date and time.
|
|
* Usage:
|
|
* $query->select($query->dateAdd());
|
|
* Prefixing the interval with a - (negative sign) will cause subtraction to be used.
|
|
*
|
|
* @param datetime $date The date or datetime to add to
|
|
* @param string $interval The string representation of the appropriate number of units
|
|
* @param string $datePart The part of the date to perform the addition on
|
|
*
|
|
* @return string The string with the appropriate sql for addition of dates
|
|
*
|
|
* @since 13.1
|
|
* @link http://www.sqlite.org/lang_datefunc.html
|
|
*/
|
|
public function dateAdd($date, $interval, $datePart)
|
|
{
|
|
// SQLite does not support microseconds as a separate unit. Convert the interval to seconds
|
|
if (strcasecmp($datePart, 'microseconds') == 0)
|
|
{
|
|
$interval = .001 * $interval;
|
|
$datePart = 'seconds';
|
|
}
|
|
|
|
if (substr($interval, 0, 1) != '-')
|
|
{
|
|
return "datetime('" . $date . "', '+" . $interval . " " . $datePart . "')";
|
|
}
|
|
else
|
|
{
|
|
return "datetime('" . $date . "', '" . $interval . " " . $datePart . "')";
|
|
}
|
|
}
|
|
}
|