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Some SQLite cleanups.

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git-svn-id: https://svn.cakephp.org/repo/trunk/cake@262 3807eeeb-6ff5-0310-8944-8be069107fe0
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brego 2005-06-21 17:06:54 +00:00
parent 34a4490f74
commit 5f0e5a1c59
1 changed files with 102 additions and 96 deletions
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198
libs/dbo/dbo_sqlite.php
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@ -14,94 +14,98 @@
//////////////////////////////////////////////////////////////////////////
/**
* SQLite layer for DBO
*
* @filesource
* @author Cake Authors/Developers
* @copyright Copyright (c) 2005, Cake Authors/Developers
* @link https://developers.nextco.com/cake/wiki/Authors Authors/Developers
* @package cake
* @subpackage cake.libs
* @since Cake v 0.9.0
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
* SQLite layer for DBO
*
* @filesource
* @author Cake Authors/Developers
* @copyright Copyright (c) 2005, Cake Authors/Developers
* @link https://developers.nextco.com/cake/wiki/Authors Authors/Developers
* @package cake
* @subpackage cake.libs
* @since Cake v 0.9.0
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Include DBO.
*/
* Include DBO.
*/
uses('dbo');
/**
* SQLite layer for DBO.
*
* @package cake
* @subpackage cake.libs
* @since Cake v 0.9.0
*/
* SQLite layer for DBO.
*
* @package cake
* @subpackage cake.libs
* @since Cake v 0.9.0
*/
class DBO_SQLite extends DBO
{
/**
* Connects to the database using config['host'] as a filename.
*
* @param array $config Configuration array for connecting
* @return mixed
*/
function connect ($config)
/**
* Connects to the database using config['file'] as a filename.
*
* @param array $config Configuration array for connecting
* @return mixed
*/
function connect($config)
{
if ($config)
{
$this->config = $config;
$this->_conn = sqlite_open($config['host']);
$this->_conn = sqlite_open($config['file']);
}
$this->connected = $this->_conn? true: false;
if($this->connected)
{
return $this->_conn;
}
else
{
die('Could not connect to DB.');
}
}
/**
* Disconnects from database.
*
* @return boolean True if the database could be disconnected, else false
*/
function disconnect ()
/**
* Disconnects from database.
*
* @return boolean True if the database could be disconnected, else false
*/
function disconnect()
{
return sqlite_close($this->_conn);
}
/**
* Executes given SQL statement.
*
* @param string $sql SQL statement
* @return resource Result resource identifier
*/
function execute ($sql)
/**
* Executes given SQL statement.
*
* @param string $sql SQL statement
* @return resource Result resource identifier
*/
function execute($sql)
{
return sqlite_query($this->_conn, $sql);
}
/**
* Returns a row from given resultset as an array .
*
* @return array The fetched row as an array
*/
function fetchRow ()
/**
* Returns a row from given resultset as an array .
*
* @return array The fetched row as an array
*/
function fetchRow()
{
return sqlite_fetch_array($this->_result);
}
/**
* Returns an array of tables in the database. If there are no tables, an error is raised and the application exits.
*
* @return array Array of tablenames in the database
*/
function tablesList ()
/**
* Returns an array of tables in the database. If there are no tables, an error is raised and the application exits.
*
* @return array Array of tablenames in the database
*/
function tablesList()
{
$result = sqlite_query($this->_conn, "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name;");
@ -120,72 +124,74 @@ class DBO_SQLite extends DBO
return $tables;
}
}
/**
* Returns an array of the fields in given table name.
*
* @param string $table_name Name of database table to inspect
* @return array Fields in table. Keys are name and type
*/
function fields ($table_name)
/**
* Returns an array of the fields in given table name.
*
* @param string $table_name Name of database table to inspect
* @return array Fields in table. Keys are name and type
*/
function fields($table_name)
{
$fields = false;
$cols = sqlite_fetch_column_types($table_name, $this->_conn, SQLITE_ASSOC);
foreach ($cols as $column => $type)
{
$fields[] = array('name'=>$column, 'type'=>$type);
}
return $fields;
}
/**
* Returns a quoted and escaped string of $data for use in an SQL statement.
*
* @param string $data String to be prepared for use in an SQL statement
* @return string Quoted and escaped
*/
function prepareValue ($data)
/**
* Returns a quoted and escaped string of $data for use in an SQL statement.
*
* @param string $data String to be prepared for use in an SQL statement
* @return string Quoted and escaped
*/
function prepareValue($data)
{
return "'".sqlite_escape_string($data)."'";
}
/**
* Returns a formatted error message from previous database operation.
*
* @return string Error message
*/
function lastError ()
/**
* Returns a formatted error message from previous database operation.
*
* @return string Error message
*/
function lastError()
{
return sqlite_last_error($this->_conn)? sqlite_last_error($this->_conn).': '.sqlite_error_string(sqlite_last_error($this->_conn)): null;
}
/**
* Returns number of affected rows in previous database operation. If no previous operation exists, this returns false.
*
* @return int Number of affected rows
*/
function lastAffected ()
/**
* Returns number of affected rows in previous database operation. If no previous operation exists, this returns false.
*
* @return int Number of affected rows
*/
function lastAffected()
{
return $this->_result? sqlite_changes($this->_conn): false;
}
/**
* Returns number of rows in previous resultset. If no previous resultset exists,
* this returns false.
*
* @return int Number of rows in resultset
*/
function lastNumRows ()
/**
* Returns number of rows in previous resultset. If no previous resultset exists,
* this returns false.
*
* @return int Number of rows in resultset
*/
function lastNumRows()
{
return $this->_result? sqlite_num_rows($this->_result): false;
}
/**
* Returns the ID generated from the previous INSERT operation.
*
* @return int
*/
function lastInsertId ()
/**
* Returns the ID generated from the previous INSERT operation.
*
* @return int
*/
function lastInsertId()
{
return sqlite_last_insert_rowid($this->_conn);
}
@ -197,7 +203,7 @@ class DBO_SQLite extends DBO
* @param int $offset Offset from which to start results
* @return string SQL limit/offset statement
*/
function selectLimit ($limit, $offset=null)
function selectLimit($limit, $offset=null)
{
// :TODO: Please verify this with SQLite, untested.
return " LIMIT {$limit}".($offset? " OFFSET {$offset}": null);