First Local Commit - After Clean up.
Signed-off-by: Rick Hays <rhays@haysgang.com>
This commit is contained in:
261
system/Database/Postgre/Forge.php
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261
system/Database/Postgre/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\Postgre;
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/**
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* Forge for Postgre
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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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* CHECK DATABASE EXIST statement
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*
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* @var string
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*/
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protected $checkDatabaseExistStr = 'SELECT 1 FROM pg_database WHERE datname = ?';
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/**
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* DROP CONSTRAINT statement
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*
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* @var string
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*/
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protected $dropConstraintStr = 'ALTER TABLE %s DROP CONSTRAINT %s';
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/**
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* UNSIGNED support
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*
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* @var array
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*/
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protected $_unsigned = [
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'INT2' => 'INTEGER',
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'SMALLINT' => 'INTEGER',
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'INT' => 'BIGINT',
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'INT4' => 'BIGINT',
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'INTEGER' => 'BIGINT',
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'INT8' => 'NUMERIC',
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'BIGINT' => 'NUMERIC',
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'REAL' => 'DOUBLE PRECISION',
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'FLOAT' => 'DOUBLE PRECISION',
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];
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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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* CREATE TABLE attributes
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*
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* @param array $attributes Associative array of table attributes
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* @return string
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*/
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protected function _createTableAttributes(array $attributes): string
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{
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return '';
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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, $field)
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{
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if (in_array($alter_type, ['DROP', 'ADD'], true))
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{
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return parent::_alterTable($alter_type, $table, $field);
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}
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$sql = 'ALTER TABLE ' . $this->db->escapeIdentifiers($table);
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$sqls = [];
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foreach ($field as $data)
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{
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if ($data['_literal'] !== false)
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{
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return false;
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}
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if (version_compare($this->db->getVersion(), '8', '>=') && isset($data['type']))
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{
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$sqls[] = $sql . ' ALTER COLUMN ' . $this->db->escapeIdentifiers($data['name'])
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. " TYPE {$data['type']}{$data['length']}";
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}
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if (! empty($data['default']))
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{
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$sqls[] = $sql . ' ALTER COLUMN ' . $this->db->escapeIdentifiers($data['name'])
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. " SET DEFAULT {$data['default']}";
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}
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if (isset($data['null']))
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{
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$sqls[] = $sql . ' ALTER COLUMN ' . $this->db->escapeIdentifiers($data['name'])
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. ($data['null'] === true ? ' DROP' : ' SET') . ' NOT NULL';
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}
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if (! empty($data['new_name']))
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{
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$sqls[] = $sql . ' RENAME COLUMN ' . $this->db->escapeIdentifiers($data['name'])
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. ' TO ' . $this->db->escapeIdentifiers($data['new_name']);
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}
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if (! empty($data['comment']))
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{
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$sqls[] = 'COMMENT ON COLUMN' . $this->db->escapeIdentifiers($table)
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. '.' . $this->db->escapeIdentifiers($data['name'])
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. " IS {$data['comment']}";
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}
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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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* Process column
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*
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* @param array $field
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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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return $this->db->escapeIdentifiers($field['name'])
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. ' ' . $field['type'] . $field['length']
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. $field['default']
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. $field['null']
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. $field['auto_increment']
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. $field['unique'];
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}
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//--------------------------------------------------------------------
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/**
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* Field attribute TYPE
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*
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* Performs a data type mapping between different databases.
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*
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* @param array &$attributes
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*
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* @return void
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*/
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protected function _attributeType(array &$attributes)
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{
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// Reset field lengths for data types that don't support it
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if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== false)
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{
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$attributes['CONSTRAINT'] = null;
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}
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switch (strtoupper($attributes['TYPE']))
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{
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case 'TINYINT':
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$attributes['TYPE'] = 'SMALLINT';
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$attributes['UNSIGNED'] = false;
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break;
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case 'MEDIUMINT':
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$attributes['TYPE'] = 'INTEGER';
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$attributes['UNSIGNED'] = false;
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break;
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case 'DATETIME':
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$attributes['TYPE'] = 'TIMESTAMP';
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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']) && $attributes['AUTO_INCREMENT'] === true)
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{
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$field['type'] = $field['type'] === 'NUMERIC' ? 'BIGSERIAL' : 'SERIAL';
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}
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}
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//--------------------------------------------------------------------
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/**
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* Drop Table
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*
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* Generates a platform-specific DROP TABLE string
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*
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* @param string $table Table name
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* @param boolean $if_exists Whether to add an IF EXISTS condition
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* @param boolean $cascade
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*
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* @return string
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*/
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protected function _dropTable(string $table, bool $if_exists, bool $cascade): string
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{
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$sql = parent::_dropTable($table, $if_exists, $cascade);
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if ($cascade === true)
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{
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$sql .= ' CASCADE';
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}
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return $sql;
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}
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//--------------------------------------------------------------------
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}
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