130 lines
2.7 KiB
PHP
130 lines
2.7 KiB
PHP
|
<?php
|
||
|
/**
|
||
|
* Query
|
||
|
*
|
||
|
* Free Query Builder / Database Abstraction Layer
|
||
|
*
|
||
|
* @author Timothy J. Warren
|
||
|
* @copyright Copyright (c) 2012
|
||
|
* @link https://github.com/aviat4ion/Query
|
||
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
||
|
*/
|
||
|
|
||
|
// --------------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Firebird Specific SQL
|
||
|
*/
|
||
|
class Firebird_SQL extends DB_SQL {
|
||
|
|
||
|
/**
|
||
|
* Convienience public function to generate sql for creating a db table
|
||
|
*
|
||
|
* @param string $name
|
||
|
* @param array $fields
|
||
|
* @param array $constraints=array()
|
||
|
* @param array $indexes=array()
|
||
|
*
|
||
|
* @return string
|
||
|
*/
|
||
|
public function create_table($name, $fields, 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($fields 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
|
||
|
$sql = 'CREATE TABLE "'.$name.'" (';
|
||
|
$sql .= implode(',', $columns);
|
||
|
$sql .= ')';
|
||
|
|
||
|
return $sql;
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Drop the selected table
|
||
|
*
|
||
|
* @param string $name
|
||
|
* @return string
|
||
|
*/
|
||
|
public function delete_table($name)
|
||
|
{
|
||
|
return 'DROP TABLE "'.$name.'"';
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Limit clause
|
||
|
*
|
||
|
* @param string $sql
|
||
|
* @param int $limit
|
||
|
* @param int $offset
|
||
|
* @return string
|
||
|
*/
|
||
|
public function limit($sql, $limit, $offset=FALSE)
|
||
|
{
|
||
|
// Keep the current sql string safe for a moment
|
||
|
$orig_sql = $sql;
|
||
|
|
||
|
$sql = 'FIRST '. (int) $limit;
|
||
|
|
||
|
if ($offset > 0)
|
||
|
{
|
||
|
$sql .= ' SKIP '. (int) $offset;
|
||
|
}
|
||
|
|
||
|
$sql = preg_replace("`SELECT`i", "SELECT {$sql}", $orig_sql);
|
||
|
|
||
|
return $sql;
|
||
|
}
|
||
|
|
||
|
// --------------------------------------------------------------------------
|
||
|
|
||
|
/**
|
||
|
* Random ordering keyword
|
||
|
*
|
||
|
* @return string
|
||
|
*/
|
||
|
public function random()
|
||
|
{
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
//End of firebird_sql.php
|