paulgoughbooks_old
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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014-2019 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author CodeIgniter Dev Team * @copyright 2019-2020 CodeIgniter Foundation * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ namespace CodeIgniter\Database\SQLite3; use CodeIgniter\Database\ConnectionInterface; use CodeIgniter\Database\Exceptions\DatabaseException; /** * Forge for SQLite3 */ class Forge extends \CodeIgniter\Database\Forge { /** * UNSIGNED support * * @var boolean|array */ protected $_unsigned = false; /** * NULL value representation in CREATE/ALTER TABLE statements * * @var string */ protected $_null = 'NULL'; //-------------------------------------------------------------------- /** * Constructor. * * @param $db ConnectionInterface */ public function __construct(ConnectionInterface $db) { parent::__construct($db); if (version_compare($this->db->getVersion(), '3.3', '<')) { $this->createTableIfStr = false; $this->dropTableIfStr = false; } } //-------------------------------------------------------------------- /** * Create database * * @param string $dbName * @param boolean $ifNotExists Whether to add IF NOT EXISTS condition * * @return boolean */ public function createDatabase(string $dbName, bool $ifNotExists = false): bool { // In SQLite, a database is created when you connect to the database. // We'll return TRUE so that an error isn't generated. return true; } //-------------------------------------------------------------------- /** * Drop database * * @param string $dbName * * @return boolean * @throws \CodeIgniter\Database\Exceptions\DatabaseException */ public function dropDatabase(string $dbName): bool { // In SQLite, a database is dropped when we delete a file if (! is_file($dbName)) { if ($this->db->DBDebug) { throw new DatabaseException('Unable to drop the specified database.'); } return false; } // We need to close the pseudo-connection first $this->db->close(); if (! @unlink($dbName)) { if ($this->db->DBDebug) { throw new DatabaseException('Unable to drop the specified database.'); } return false; } if (! empty($this->db->dataCache['db_names'])) { $key = array_search(strtolower($dbName), array_map('strtolower', $this->db->dataCache['db_names']), true); if ($key !== false) { unset($this->db->dataCache['db_names'][$key]); } } return true; } //-------------------------------------------------------------------- /** * ALTER TABLE * * @param string $alter_type ALTER type * @param string $table Table name * @param mixed $field Column definition * * @return string|array */ protected function _alterTable(string $alter_type, string $table, $field) { switch ($alter_type) { case 'DROP': $sqlTable = new Table($this->db, $this); $sqlTable->fromTable($table) ->dropColumn($field) ->run(); return ''; case 'CHANGE': $sqlTable = new Table($this->db, $this); $sqlTable->fromTable($table) ->modifyColumn($field) ->run(); return null; default: return parent::_alterTable($alter_type, $table, $field); } } //-------------------------------------------------------------------- /** * Process column * * @param array $field * * @return string */ protected function _processColumn(array $field): string { if ($field['type'] === 'TEXT' && strpos($field['length'], "('") === 0) { $field['type'] .= ' CHECK(' . $this->db->escapeIdentifiers($field['name']) . ' IN ' . $field['length'] . ')'; } return $this->db->escapeIdentifiers($field['name']) . ' ' . $field['type'] . $field['auto_increment'] . $field['null'] . $field['unique'] . $field['default']; } //-------------------------------------------------------------------- /** * Process indexes * * @param string $table * * @return array */ protected function _processIndexes(string $table): array { $sqls = []; for ($i = 0, $c = count($this->keys); $i < $c; $i++) { $this->keys[$i] = (array)$this->keys[$i]; for ($i2 = 0, $c2 = count($this->keys[$i]); $i2 < $c2; $i2++) { if (! isset($this->fields[$this->keys[$i][$i2]])) { unset($this->keys[$i][$i2]); } } if (count($this->keys[$i]) <= 0) { continue; } if (in_array($i, $this->uniqueKeys)) { $sqls[] = 'CREATE UNIQUE INDEX ' . $this->db->escapeIdentifiers($table . '_' . implode('_', $this->keys[$i])) . ' ON ' . $this->db->escapeIdentifiers($table) . ' (' . implode(', ', $this->db->escapeIdentifiers($this->keys[$i])) . ');'; continue; } $sqls[] = 'CREATE INDEX ' . $this->db->escapeIdentifiers($table . '_' . implode('_', $this->keys[$i])) . ' ON ' . $this->db->escapeIdentifiers($table) . ' (' . implode(', ', $this->db->escapeIdentifiers($this->keys[$i])) . ');'; } return $sqls; } //-------------------------------------------------------------------- /** * Field attribute TYPE * * Performs a data type mapping between different databases. * * @param array &$attributes * * @return void */ protected function _attributeType(array &$attributes) { switch (strtoupper($attributes['TYPE'])) { case 'ENUM': case 'SET': $attributes['TYPE'] = 'TEXT'; break; default: break; } } //-------------------------------------------------------------------- /** * Field attribute AUTO_INCREMENT * * @param array &$attributes * @param array &$field * * @return void */ protected function _attributeAutoIncrement(array &$attributes, array &$field) { if (! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === true && stripos($field['type'], 'int') !== false) { $field['type'] = 'INTEGER PRIMARY KEY'; $field['default'] = ''; $field['null'] = ''; $field['unique'] = ''; $field['auto_increment'] = ' AUTOINCREMENT'; $this->primaryKeys = []; } } //-------------------------------------------------------------------- /** * Foreign Key Drop * * @param string $table Table name * @param string $foreignName Foreign name * * @return boolean * @throws \CodeIgniter\Database\Exceptions\DatabaseException */ public function dropForeignKey(string $table, string $foreignName): bool { // If this version of SQLite doesn't support it, we're done here if ($this->db->supportsForeignKeys() !== true) { return true; } // Otherwise we have to copy the table and recreate // without the foreign key being involved now $sqlTable = new Table($this->db, $this); return $sqlTable->fromTable($this->db->DBPrefix . $table) ->dropForeignKey($foreignName) ->run(); } //-------------------------------------------------------------------- } |
Commits for paulgoughbooks_old/trunk/system/Database/SQLite3/Forge.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Tue 03 Nov, 2020 08:50:21 +0000 | Migration of Paul Goughs Books site to Codeignitor 4 |