<?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