First Local Commit - After Clean up.
Signed-off-by: Rick Hays <rhays@haysgang.com>
This commit is contained in:
333
system/Database/SQLite3/Forge.php
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333
system/Database/SQLite3/Forge.php
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<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014-2019 British Columbia Institute of Technology
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* Copyright (c) 2019 CodeIgniter Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author CodeIgniter Dev Team
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* @copyright 2019 CodeIgniter Foundation
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 4.0.0
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* @filesource
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*/
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namespace CodeIgniter\Database\SQLite3;
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use CodeIgniter\Database\ConnectionInterface;
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use CodeIgniter\Database\Exceptions\DatabaseException;
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/**
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* Forge for SQLite3
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*/
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class Forge extends \CodeIgniter\Database\Forge
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{
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/**
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* UNSIGNED support
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*
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* @var boolean|array
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*/
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protected $_unsigned = false;
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/**
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* NULL value representation in CREATE/ALTER TABLE statements
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*
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* @var string
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*/
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protected $_null = 'NULL';
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//--------------------------------------------------------------------
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/**
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* Constructor.
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*
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* @param $db ConnectionInterface
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*/
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public function __construct(ConnectionInterface $db)
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{
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parent::__construct($db);
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if (version_compare($this->db->getVersion(), '3.3', '<'))
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{
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$this->createTableIfStr = false;
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$this->dropTableIfStr = false;
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}
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}
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//--------------------------------------------------------------------
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/**
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* Create database
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*
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* @param string $dbName
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* @param boolean $ifNotExists Whether to add IF NOT EXISTS condition
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*
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* @return boolean
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*/
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public function createDatabase(string $dbName, bool $ifNotExists = false): bool
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{
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// In SQLite, a database is created when you connect to the database.
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// We'll return TRUE so that an error isn't generated.
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return true;
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}
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//--------------------------------------------------------------------
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/**
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* Drop database
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*
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* @param string $dbName
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*
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* @return boolean
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* @throws \CodeIgniter\Database\Exceptions\DatabaseException
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*/
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public function dropDatabase(string $dbName): bool
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{
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// In SQLite, a database is dropped when we delete a file
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if (! is_file($dbName))
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{
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if ($this->db->DBDebug)
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{
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throw new DatabaseException('Unable to drop the specified database.');
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}
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return false;
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}
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// We need to close the pseudo-connection first
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$this->db->close();
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if (! @unlink($dbName))
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{
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if ($this->db->DBDebug)
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{
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throw new DatabaseException('Unable to drop the specified database.');
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}
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return false;
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}
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if (! empty($this->db->dataCache['db_names']))
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{
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$key = array_search(strtolower($dbName), array_map('strtolower', $this->db->dataCache['db_names']), true);
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if ($key !== false)
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{
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unset($this->db->dataCache['db_names'][$key]);
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}
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}
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return true;
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}
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//--------------------------------------------------------------------
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/**
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* ALTER TABLE
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*
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* @param string $alter_type ALTER type
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* @param string $table Table name
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* @param mixed $field Column definition
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*
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* @return string|array
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*/
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protected function _alterTable(string $alter_type, string $table, $field)
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{
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switch ($alter_type)
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{
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case 'DROP':
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$sqlTable = new Table($this->db, $this);
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$sqlTable->fromTable($table)
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->dropColumn($field)
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->run();
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return '';
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break;
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case 'CHANGE':
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$sqlTable = new Table($this->db, $this);
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$sqlTable->fromTable($table)
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->modifyColumn($field)
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->run();
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return null;
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break;
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default:
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return parent::_alterTable($alter_type, $table, $field);
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}
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}
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//--------------------------------------------------------------------
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/**
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* Process column
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*
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* @param array $field
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*
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* @return string
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*/
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protected function _processColumn(array $field): string
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{
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if ($field['type'] === 'TEXT' && strpos($field['length'], "('") === 0)
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{
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$field['type'] .= ' CHECK(' . $this->db->escapeIdentifiers($field['name'])
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. ' IN ' . $field['length'] . ')';
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}
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return $this->db->escapeIdentifiers($field['name'])
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. ' ' . $field['type']
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. $field['auto_increment']
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. $field['null']
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. $field['unique']
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. $field['default'];
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}
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//--------------------------------------------------------------------
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/**
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* Process indexes
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*
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* @param string $table
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*
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* @return array
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*/
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protected function _processIndexes(string $table): array
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{
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$sqls = [];
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for ($i = 0, $c = count($this->keys); $i < $c; $i++)
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{
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$this->keys[$i] = (array)$this->keys[$i];
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for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++)
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{
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if (! isset($this->fields[$this->keys[$i][$i2]]))
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{
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unset($this->keys[$i][$i2]);
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}
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}
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if (count($this->keys[$i]) <= 0)
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{
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continue;
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}
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if (in_array($i, $this->uniqueKeys))
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{
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$sqls[] = 'CREATE UNIQUE INDEX ' . $this->db->escapeIdentifiers($table . '_' . implode('_', $this->keys[$i]))
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. ' ON ' . $this->db->escapeIdentifiers($table)
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. ' (' . implode(', ', $this->db->escapeIdentifiers($this->keys[$i])) . ');';
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continue;
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}
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$sqls[] = 'CREATE INDEX ' . $this->db->escapeIdentifiers($table . '_' . implode('_', $this->keys[$i]))
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. ' ON ' . $this->db->escapeIdentifiers($table)
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. ' (' . implode(', ', $this->db->escapeIdentifiers($this->keys[$i])) . ');';
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}
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return $sqls;
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}
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//--------------------------------------------------------------------
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/**
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* Field attribute TYPE
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*
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* Performs a data type mapping between different databases.
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*
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* @param array &$attributes
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*
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* @return void
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*/
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protected function _attributeType(array &$attributes)
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{
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switch (strtoupper($attributes['TYPE']))
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{
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case 'ENUM':
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case 'SET':
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$attributes['TYPE'] = 'TEXT';
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break;
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default:
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break;
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}
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}
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//--------------------------------------------------------------------
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/**
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* Field attribute AUTO_INCREMENT
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*
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* @param array &$attributes
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* @param array &$field
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*
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* @return void
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*/
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protected function _attributeAutoIncrement(array &$attributes, array &$field)
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{
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if (! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === true
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&& stripos($field['type'], 'int') !== false)
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{
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$field['type'] = 'INTEGER PRIMARY KEY';
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$field['default'] = '';
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$field['null'] = '';
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$field['unique'] = '';
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$field['auto_increment'] = ' AUTOINCREMENT';
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$this->primaryKeys = [];
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}
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}
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//--------------------------------------------------------------------
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/**
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* Foreign Key Drop
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*
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* @param string $table Table name
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* @param string $foreignName Foreign name
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*
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* @return boolean
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* @throws \CodeIgniter\Database\Exceptions\DatabaseException
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*/
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public function dropForeignKey(string $table, string $foreignName): bool
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{
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// If this version of SQLite doesn't support it, we're done here
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if ($this->db->supportsForeignKeys() !== true)
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{
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return true;
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}
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// Otherwise we have to copy the table and recreate
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// without the foreign key being involved now
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$sqlTable = new Table($this->db, $this);
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return $sqlTable->fromTable($this->db->DBPrefix . $table)
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->dropForeignKey($foreignName)
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->run();
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}
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//--------------------------------------------------------------------
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}
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