diff options
Diffstat (limited to 'system/database/drivers/oci8/oci8_forge.php')
-rw-r--r-- | system/database/drivers/oci8/oci8_forge.php | 146 |
1 files changed, 63 insertions, 83 deletions
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php index bd265b6e0..bd9d2df3c 100644 --- a/system/database/drivers/oci8/oci8_forge.php +++ b/system/database/drivers/oci8/oci8_forge.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -24,6 +24,7 @@ * @since Version 1.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * Oracle Forge Class @@ -34,117 +35,96 @@ */ class CI_DB_oci8_forge extends CI_DB_forge { + /** + * CREATE DATABASE statement + * + * @var string + */ protected $_create_database = FALSE; + + /** + * DROP DATABASE statement + * + * @var string + */ protected $_drop_database = FALSE; - protected $_drop_table = 'DROP TABLE %s'; /** - * Create Table + * DROP TABLE IF statement * - * @param string the table name - * @param array the fields - * @param mixed primary key(s) - * @param mixed key(s) - * @param bool should 'IF NOT EXISTS' be added to the SQL - * @return string + * @var string */ - protected function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists) - { - $sql = 'CREATE TABLE '; + protected $_drop_table_if = FALSE; - if ($if_not_exists === TRUE) - { - $sql .= 'IF NOT EXISTS '; - } + /** + * UNSIGNED support + * + * @var bool|array + */ + protected $_unsigned = FALSE; - $sql .= $this->db->escape_identifiers($table).' ('; - $current_field_count = 0; + // -------------------------------------------------------------------- - foreach ($fields as $field => $attributes) + /** + * ALTER TABLE + * + * @param string $alter_type ALTER type + * @param string $table Table name + * @param mixed $field Column definition + * @return string|string[] + */ + protected function _alter_table($alter_type, $table, $field) + { + if ($alter_type === 'DROP') { - // Numeric field names aren't allowed in databases, so if the key is - // numeric, we know it was assigned by PHP and the developer manually - // entered the field information, so we'll simply add it to the list - if (is_numeric($field)) - { - $sql .= "\n\t".$attributes; - } - else - { - $attributes = array_change_key_case($attributes, CASE_UPPER); - - $sql .= "\n\t".$this->db->protect_identifiers($field).' '.$attributes['TYPE'] - .((isset($attributes['UNSINGED']) && $attributes['UNSIGNED'] === TRUE) ? ' UNSIGNED' : '') - .(isset($attributes['DEFAULT']) ? " DEFAULT '".$attributes['DEFAULT']."'" : '') - .((isset($attributes['NULL']) && $attributes['NULL'] === TRUE) ? '' : ' NOT NULL') - .(isset($attributes['CONSTRAINT']) ? ' CONSTRAINT '.$attributes['CONSTRAINT'] : ''); - } - - // don't add a comma on the end of the last field - if (++$current_field_count < count($fields)) - { - $sql .= ','; - } + return parent::_alter_table($alter_type, $table, $field); } - - if (count($primary_keys) > 0) + elseif ($alter_type === 'CHANGE') { - $primary_keys = $this->db->protect_identifiers($primary_keys); - $sql .= ",\n\tCONSTRAINT ".$table.' PRIMARY KEY ('.implode(', ', $primary_keys).')'; + $alter_type = 'MODIFY'; } - if (is_array($keys) && count($keys) > 0) + $sql = 'ALTER TABLE '.$this->db->escape_identifiers($table); + $sqls = array(); + for ($i = 0, $c = count($field); $i < $c; $i++) { - foreach ($keys as $key) + if ($field[$i]['_literal'] !== FALSE) { - if (is_array($key)) - { - $key = $this->db->protect_identifiers($key); - } - else + $field[$i] = "\n\t".$field[$i]['_literal']; + } + else + { + $field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]); + if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name'])) { - $key = array($this->db->protect_identifiers($key)); + $sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name']) + .' '.$this->db->escape_identifiers($field[$i]['new_name']); } - - $sql .= ",\n\tUNIQUE COLUMNS (".implode(', ', $key).')'; } } - return $sql."\n)"; + $sql .= ' '.$alter_type.' '; + $sql .= (count($field) === 1) + ? $fields[0] + : '('.implode(',', $field).')'; + + // RENAME COLUMN must be executed after MODIFY + array_unshift($sqls, $sql); + return $sql; } // -------------------------------------------------------------------- /** - * Alter table query + * Field attribute AUTO_INCREMENT * - * Generates a platform-specific query so that a table can be altered - * Called by add_column(), drop_column(), and column_alter(), - * - * @param string the ALTER type (ADD, DROP, CHANGE) - * @param string the column name - * @param string the table name - * @param string the column definition - * @param string the default value - * @param bool should 'NOT NULL' be added - * @param string the field after which we should add the new field - * @return string + * @param array &$attributes + * @param array &$field + * @return void */ - protected function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '') + protected function _attr_auto_increment(&$attributes, &$field) { - $sql = 'ALTER TABLE '.$this->db->protect_identifiers($table).' '.$alter_type.' '.$this->db->protect_identifiers($column_name); - - // DROP has everything it needs now. - if ($alter_type === 'DROP') - { - return $sql; - } - - return $sql.' '.$column_definition - .($default_value != '' ? ' DEFAULT "'.$default_value.'"' : '') - .($null === NULL ? ' NULL' : ' NOT NULL') - .($after_field != '' ? ' AFTER '.$this->db->protect_identifiers($after_field) : ''); - + // Not supported - sequences and triggers must be used instead } } |