306 lines
8.8 KiB
PHP
306 lines
8.8 KiB
PHP
<?php
|
|
|
|
/**
|
|
* This file is part of CodeIgniter 4 framework.
|
|
*
|
|
* (c) CodeIgniter Foundation <admin@codeigniter.com>
|
|
*
|
|
* For the full copyright and license information, please view
|
|
* the LICENSE file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace CodeIgniter\Database\OCI8;
|
|
|
|
use CodeIgniter\Database\Forge as BaseForge;
|
|
|
|
/**
|
|
* Forge for OCI8
|
|
*/
|
|
class Forge extends BaseForge
|
|
{
|
|
/**
|
|
* DROP INDEX statement
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $dropIndexStr = 'DROP INDEX %s';
|
|
|
|
/**
|
|
* CREATE DATABASE statement
|
|
*
|
|
* @var false
|
|
*/
|
|
protected $createDatabaseStr = false;
|
|
|
|
/**
|
|
* CREATE TABLE IF statement
|
|
*
|
|
* @var false
|
|
*
|
|
* @deprecated This is no longer used.
|
|
*/
|
|
protected $createTableIfStr = false;
|
|
|
|
/**
|
|
* DROP TABLE IF EXISTS statement
|
|
*
|
|
* @var false
|
|
*/
|
|
protected $dropTableIfStr = false;
|
|
|
|
/**
|
|
* DROP DATABASE statement
|
|
*
|
|
* @var false
|
|
*/
|
|
protected $dropDatabaseStr = false;
|
|
|
|
/**
|
|
* UNSIGNED support
|
|
*
|
|
* @var array|bool
|
|
*/
|
|
protected $unsigned = false;
|
|
|
|
/**
|
|
* NULL value representation in CREATE/ALTER TABLE statements
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $null = 'NULL';
|
|
|
|
/**
|
|
* RENAME TABLE statement
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $renameTableStr = 'ALTER TABLE %s RENAME TO %s';
|
|
|
|
/**
|
|
* DROP CONSTRAINT statement
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $dropConstraintStr = 'ALTER TABLE %s DROP CONSTRAINT %s';
|
|
|
|
/**
|
|
* Foreign Key Allowed Actions
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $fkAllowActions = ['CASCADE', 'SET NULL', 'NO ACTION'];
|
|
|
|
/**
|
|
* ALTER TABLE
|
|
*
|
|
* @param string $alterType ALTER type
|
|
* @param string $table Table name
|
|
* @param array|string $field Column definition
|
|
*
|
|
* @return string|string[]
|
|
*/
|
|
protected function _alterTable(string $alterType, string $table, $field)
|
|
{
|
|
$sql = 'ALTER TABLE ' . $this->db->escapeIdentifiers($table);
|
|
|
|
if ($alterType === 'DROP') {
|
|
$fields = array_map(fn ($field) => $this->db->escapeIdentifiers(trim($field)), is_string($field) ? explode(',', $field) : $field);
|
|
|
|
return $sql . ' DROP (' . implode(',', $fields) . ') CASCADE CONSTRAINT INVALIDATE';
|
|
}
|
|
if ($alterType === 'CHANGE') {
|
|
$alterType = 'MODIFY';
|
|
}
|
|
|
|
$nullableMap = array_column($this->db->getFieldData($table), 'nullable', 'name');
|
|
$sqls = [];
|
|
|
|
for ($i = 0, $c = count($field); $i < $c; $i++) {
|
|
if ($alterType === 'MODIFY') {
|
|
// If a null constraint is added to a column with a null constraint,
|
|
// ORA-01451 will occur,
|
|
// so add null constraint is used only when it is different from the current null constraint.
|
|
// If a not null constraint is added to a column with a not null constraint,
|
|
// ORA-01442 will occur.
|
|
$wantToAddNull = strpos($field[$i]['null'], ' NOT') === false;
|
|
$currentNullable = $nullableMap[$field[$i]['name']];
|
|
|
|
if ($wantToAddNull === true && $currentNullable === true) {
|
|
$field[$i]['null'] = '';
|
|
} elseif ($field[$i]['null'] === '' && $currentNullable === false) {
|
|
// Nullable by default
|
|
$field[$i]['null'] = ' NULL';
|
|
} elseif ($wantToAddNull === false && $currentNullable === false) {
|
|
$field[$i]['null'] = '';
|
|
}
|
|
}
|
|
|
|
if ($field[$i]['_literal'] !== false) {
|
|
$field[$i] = "\n\t" . $field[$i]['_literal'];
|
|
} else {
|
|
$field[$i]['_literal'] = "\n\t" . $this->_processColumn($field[$i]);
|
|
|
|
if (! empty($field[$i]['comment'])) {
|
|
$sqls[] = 'COMMENT ON COLUMN '
|
|
. $this->db->escapeIdentifiers($table) . '.' . $this->db->escapeIdentifiers($field[$i]['name'])
|
|
. ' IS ' . $field[$i]['comment'];
|
|
}
|
|
|
|
if ($alterType === 'MODIFY' && ! empty($field[$i]['new_name'])) {
|
|
$sqls[] = $sql . ' RENAME COLUMN ' . $this->db->escapeIdentifiers($field[$i]['name'])
|
|
. ' TO ' . $this->db->escapeIdentifiers($field[$i]['new_name']);
|
|
}
|
|
|
|
$field[$i] = "\n\t" . $field[$i]['_literal'];
|
|
}
|
|
}
|
|
|
|
$sql .= ' ' . $alterType . ' ';
|
|
$sql .= count($field) === 1
|
|
? $field[0]
|
|
: '(' . implode(',', $field) . ')';
|
|
|
|
// RENAME COLUMN must be executed after MODIFY
|
|
array_unshift($sqls, $sql);
|
|
|
|
return $sqls;
|
|
}
|
|
|
|
/**
|
|
* Field attribute AUTO_INCREMENT
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _attributeAutoIncrement(array &$attributes, array &$field)
|
|
{
|
|
if (! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === true
|
|
&& stripos($field['type'], 'NUMBER') !== false
|
|
&& version_compare($this->db->getVersion(), '12.1', '>=')
|
|
) {
|
|
$field['auto_increment'] = ' GENERATED BY DEFAULT ON NULL AS IDENTITY';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process column
|
|
*/
|
|
protected function _processColumn(array $field): string
|
|
{
|
|
$constraint = '';
|
|
// @todo: can't cover multi pattern when set type.
|
|
if ($field['type'] === 'VARCHAR2' && strpos($field['length'], "('") === 0) {
|
|
$constraint = ' CHECK(' . $this->db->escapeIdentifiers($field['name'])
|
|
. ' IN ' . $field['length'] . ')';
|
|
|
|
$field['length'] = '(' . max(array_map('mb_strlen', explode("','", mb_substr($field['length'], 2, -2)))) . ')' . $constraint;
|
|
} elseif (isset($this->primaryKeys['fields']) && count($this->primaryKeys['fields']) === 1 && $field['name'] === $this->primaryKeys['fields'][0]) {
|
|
$field['unique'] = '';
|
|
}
|
|
|
|
return $this->db->escapeIdentifiers($field['name'])
|
|
. ' ' . $field['type'] . $field['length']
|
|
. $field['unsigned']
|
|
. $field['default']
|
|
. $field['auto_increment']
|
|
. $field['null']
|
|
. $field['unique'];
|
|
}
|
|
|
|
/**
|
|
* Performs a data type mapping between different databases.
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _attributeType(array &$attributes)
|
|
{
|
|
// Reset field lengths for data types that don't support it
|
|
// Usually overridden by drivers
|
|
switch (strtoupper($attributes['TYPE'])) {
|
|
case 'TINYINT':
|
|
$attributes['CONSTRAINT'] ??= 3;
|
|
|
|
// no break
|
|
case 'SMALLINT':
|
|
$attributes['CONSTRAINT'] ??= 5;
|
|
|
|
// no break
|
|
case 'MEDIUMINT':
|
|
$attributes['CONSTRAINT'] ??= 7;
|
|
|
|
// no break
|
|
case 'INT':
|
|
case 'INTEGER':
|
|
$attributes['CONSTRAINT'] ??= 11;
|
|
|
|
// no break
|
|
case 'BIGINT':
|
|
$attributes['CONSTRAINT'] ??= 19;
|
|
|
|
// no break
|
|
case 'NUMERIC':
|
|
$attributes['TYPE'] = 'NUMBER';
|
|
|
|
return;
|
|
|
|
case 'BOOLEAN':
|
|
$attributes['TYPE'] = 'NUMBER';
|
|
$attributes['CONSTRAINT'] = 1;
|
|
$attributes['UNSIGNED'] = true;
|
|
$attributes['NULL'] = false;
|
|
|
|
return;
|
|
|
|
case 'DOUBLE':
|
|
$attributes['TYPE'] = 'FLOAT';
|
|
$attributes['CONSTRAINT'] ??= 126;
|
|
|
|
return;
|
|
|
|
case 'DATETIME':
|
|
case 'TIME':
|
|
$attributes['TYPE'] = 'DATE';
|
|
|
|
return;
|
|
|
|
case 'SET':
|
|
case 'ENUM':
|
|
case 'VARCHAR':
|
|
$attributes['CONSTRAINT'] ??= 255;
|
|
|
|
// no break
|
|
case 'TEXT':
|
|
case 'MEDIUMTEXT':
|
|
$attributes['CONSTRAINT'] ??= 4000;
|
|
$attributes['TYPE'] = 'VARCHAR2';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generates a platform-specific DROP TABLE string
|
|
*
|
|
* @return bool|string
|
|
*/
|
|
protected function _dropTable(string $table, bool $ifExists, bool $cascade)
|
|
{
|
|
$sql = parent::_dropTable($table, $ifExists, $cascade);
|
|
|
|
if ($sql !== true && $cascade === true) {
|
|
$sql .= ' CASCADE CONSTRAINTS PURGE';
|
|
} elseif ($sql !== true) {
|
|
$sql .= ' PURGE';
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Constructs sql to check if key is a constraint.
|
|
*/
|
|
protected function _dropKeyAsConstraint(string $table, string $constraintName): string
|
|
{
|
|
return "SELECT constraint_name FROM all_constraints WHERE table_name = '"
|
|
. trim($table, '"') . "' AND index_name = '"
|
|
. trim($constraintName, '"') . "'";
|
|
}
|
|
}
|