106 lines
2.3 KiB
PHP
106 lines
2.3 KiB
PHP
<?php
|
|
/**
|
|
* OpenSQLManager
|
|
*
|
|
* Free Database manager for Open Source Databases
|
|
*
|
|
* @author Timothy J. Warren
|
|
* @copyright Copyright (c) 2012
|
|
* @link https://github.com/aviat4ion/OpenSQLManager
|
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
|
*/
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* SQLite Specific SQL
|
|
*/
|
|
class SQLite_SQL extends DB_SQL {
|
|
|
|
/**
|
|
* Convenience public function to create a new table
|
|
*
|
|
* @param string $name //Name of the table
|
|
* @param array $columns //columns as straight array and/or column => type pairs
|
|
* @param array $constraints // column => constraint pairs
|
|
* @param array $indexes // column => index pairs
|
|
* @return string
|
|
*/
|
|
public function create_table($name, $columns, array $constraints=array(), array $indexes=array())
|
|
{
|
|
$column_array = array();
|
|
|
|
// Reorganize into an array indexed with column information
|
|
// Eg $column_array[$colname] = array(
|
|
// 'type' => ...,
|
|
// 'constraint' => ...,
|
|
// 'index' => ...,
|
|
// )
|
|
foreach($columns as $colname => $type)
|
|
{
|
|
if(is_numeric($colname))
|
|
{
|
|
$colname = $type;
|
|
}
|
|
|
|
$column_array[$colname] = array();
|
|
$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
|
|
}
|
|
|
|
if( ! empty($constraints))
|
|
{
|
|
foreach($constraints as $col => $const)
|
|
{
|
|
$column_array[$col]['constraint'] = $const;
|
|
}
|
|
}
|
|
|
|
// Join column definitons together
|
|
$columns = array();
|
|
foreach($column_array as $n => $props)
|
|
{
|
|
$str = "{$n} ";
|
|
$str .= (isset($props['type'])) ? "{$props['type']} " : "";
|
|
$str .= (isset($props['constraint'])) ? $props['constraint'] : "";
|
|
|
|
$columns[] = $str;
|
|
}
|
|
|
|
// Generate the sql for the creation of the table
|
|
$sql = "CREATE TABLE IF NOT EXISTS \"{$name}\" (";
|
|
$sql .= implode(", ", $columns);
|
|
$sql .= ")";
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* SQL to drop the specified table
|
|
*
|
|
* @param string $name
|
|
* @return string
|
|
*/
|
|
public function delete_table($name)
|
|
{
|
|
return 'DROP TABLE IF EXISTS "'.$name.'"';
|
|
}
|
|
|
|
/**
|
|
* Limit clause
|
|
*
|
|
* @param string $sql
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return string
|
|
*/
|
|
public function limit($sql, $limit, $offset=FALSE)
|
|
{
|
|
if ( ! is_numeric($offset))
|
|
{
|
|
return $sql." LIMIT {$limit}";
|
|
}
|
|
|
|
return $sql." LIMIT {$offset}, {$limit}";
|
|
}
|
|
}
|
|
//End of sqlite_sql.php
|