From a287a34c215903d3452023d74149eb5880125715 Mon Sep 17 00:00:00 2001 From: Andrey Andreev Date: Mon, 5 Nov 2012 23:19:59 +0200 Subject: Refactored DB Forge - PDO subdrivers are isolated from each other now. - Added compatibility for pretty much all of the features, for every DB platform. - Unified the way that stuff works in general. - Fixes issue #1005. --- system/database/drivers/ibase/ibase_forge.php | 204 +++++++++++++++----------- 1 file changed, 122 insertions(+), 82 deletions(-) (limited to 'system/database/drivers/ibase') diff --git a/system/database/drivers/ibase/ibase_forge.php b/system/database/drivers/ibase/ibase_forge.php index 7c4d00a23..a0c4e6563 100644 --- a/system/database/drivers/ibase/ibase_forge.php +++ b/system/database/drivers/ibase/ibase_forge.php @@ -36,11 +36,43 @@ defined('BASEPATH') OR exit('No direct script access allowed'); class CI_DB_ibase_forge extends CI_DB_forge { /** - * DROP TABLE statement + * CREATE TABLE IF statement * * @var string */ - protected $_drop_table = 'DROP TABLE %s'; + protected $_create_table_if = FALSE; + + /** + * RENAME TABLE statement + * + * @var string + */ + protected $_rename_table = FALSE; + + /** + * DROP TABLE IF statement + * + * @var string + */ + protected $_drop_table_if = FALSE; + + /** + * UNSIGNED support + * + * @var array + */ + protected $_unsigned = array( + 'SMALLINT' => 'INTEGER', + 'INTEGER' => 'INT64', + 'FLOAT' => 'DOUBLE PRECISION' + ); + + /** + * NULL value representation in CREATE/ALTER TABLE statements + * + * @var string + */ + protected $_null = 'NULL'; // -------------------------------------------------------------------- @@ -65,8 +97,7 @@ class CI_DB_ibase_forge extends CI_DB_forge { /** * Drop database * - * @param string the database name - * - not used in this driver, the current db is dropped + * @param string $db_name (ignored) * @return bool */ public function drop_database($db_name = '') @@ -90,110 +121,119 @@ class CI_DB_ibase_forge extends CI_DB_forge { // -------------------------------------------------------------------- /** - * Create Table + * ALTER TABLE * - * @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 + * @param string $alter_type ALTER type + * @param string $table Table name + * @param mixed $field Column definition + * @return string|string[] */ - protected function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists) - { - $sql = 'CREATE TABLE '; - - $sql .= $this->db->escape_identifiers($table).'('; - $current_field_count = 0; + protected function _alter_table($alter_type, $table, $field) + { + if (in_array($alter_type, array('DROP', 'ADD'), TRUE)) + { + return parent::_alter_table($alter_type, $table, $field); + } - foreach ($fields as $field => $attributes) + $sql = 'ALTER TABLE '.$this->db->escape_identifiers($table); + $sqls = array(); + for ($i = 0, $c = count($field), $sql .= $alter_type.' '; $i < $c; $i++) { - // Numeric field names aren't allowed in databases, so if the key is - // numeric, we know it was assigned by PHP and the developer manually - // entered the field information, so we'll simply add it to the list - if (is_numeric($field)) + if ($field[$i]['_literal'] !== FALSE) { - $sql .= "\n\t".$attributes; + return FALSE; } - else - { - $attributes = array_change_key_case($attributes, CASE_UPPER); - - $sql .= "\n\t".$this->db->escape_identifiers($field).' '.$attributes['TYPE']; - - empty($attributes['CONSTRAINT']) OR $sql .= '('.$attributes['CONSTRAINT'].')'; - - if ( ! empty($attributes['UNSIGNED']) && $attributes['UNSIGNED'] === TRUE) - { - $sql .= ' UNSIGNED'; - } - - if (isset($attributes['DEFAULT'])) - { - $sql .= " DEFAULT '".$attributes['DEFAULT']."'"; - } - $sql .= ( ! empty($attributes['NULL']) && $attributes['NULL'] === TRUE) - ? ' NULL' : ' NOT NULL'; - - if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE) - { - $sql .= ' AUTO_INCREMENT'; - } + if (isset($field[$i]['type'])) + { + $sqls[] = $sql.' TYPE '.$field[$i]['type'].$field[$i]['length']; } - // don't add a comma on the end of the last field - if (++$current_field_count < count($fields)) + if ( ! empty($field[$i]['default'])) { - $sql .= ','; + $sqls[] = $sql.' ALTER '.$this->db->escape_identifiers($field[$i]['name']) + .' SET '.$field[$i]['default']; } - } - if (count($primary_keys) > 0) - { - $primary_keys = $this->db->escape_identifiers($primary_keys); - $sql .= ",\n\tPRIMARY KEY (".implode(', ', $primary_keys).')'; - } - - if (is_array($keys) && count($keys) > 0) - { - foreach ($keys as $key) + if (isset($field[$i]['null'])) { - $key = is_array($key) - ? $this->db->escape_identifiers($key) - : array($this->db->escape_identifiers($key)); + $sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = ' + .($field[$i]['null'] === TRUE ? 'NULL' : '1') + .' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name']) + .' AND "RDB$RELATION_NAME" = '.$this->db->escape($table); + } - $sql .= ",\n\tUNIQUE (".implode(', ', $key).')'; + if ( ! empty($field[$i]['new_name'])) + { + $sqls[] = $sql.' ALTER '.$this->db->escape_identifiers($field[$i]['name']) + .' TO '.$this->db->escape_identifiers($field[$i]['new_name']); } } - return $sql."\n)"; + return $sqls; + } + + // -------------------------------------------------------------------- + + /** + * Process column + * + * @param array $field + * @return string + */ + protected function _process_column($field) + { + return $this->db->escape_identifiers($field['name']) + .' '.$field['type'].$field['length'] + .$field['null'] + .$field['unique'] + .$field['default']; } // -------------------------------------------------------------------- /** - * Alter table query + * Field attribute TYPE * - * Generates a platform-specific query so that a table can be altered - * Called by add_column(), drop_column(), and column_alter(), + * Performs a data type mapping between different databases. * - * @param string the ALTER type (ADD, DROP, CHANGE) - * @param string the column name - * @param string the table name - * @param string the column definition - * @param string the default value - * @param bool should 'NOT NULL' be added - * @param string the field after which we should add the new field - * @return string + * @param array &$attributes + * @return void + */ + protected function _attr_type(&$attributes) + { + switch (strtoupper($attributes['TYPE'])) + { + case 'TINYINT': + $attributes['TYPE'] = 'SMALLINT'; + $attributes['UNSIGNED'] = FALSE; + return; + case 'MEDIUMINT': + $attributes['TYPE'] = 'INTEGER'; + $attributes['UNSIGNED'] = FALSE; + return; + case 'INT': + $attributes['TYPE'] = 'INTEGER'; + return; + case 'BIGINT': + $attributes['TYPE'] = 'INT64'; + return; + default: return; + } + } + + // -------------------------------------------------------------------- + + /** + * Field attribute AUTO_INCREMENT + * + * @param array &$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, &$field) { - return 'ALTER TABLE '.$this->db->escape_identifiers($table).' '.$alter_type.' '.$this->db->escape_identifiers($column_name) - .' '.$column_definition - .($default_value !== '' ? ' DEFAULT "'.$default_value.'"' : '') - .($null === NULL ? ' NULL' : ' NOT NULL') - .($after_field !== '' ? ' AFTER '.$this->db->escape_identifiers($after_field) : ''); + // Not supported } } -- cgit v1.2.3-24-g4f1b