pictcode / lib / Cake / Model / Datasource / Database / Postgres.php @ 22fd3a57
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<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Model.Datasource.Database
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* @since CakePHP(tm) v 0.9.1.114
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('DboSource', 'Model/Datasource'); |
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/**
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* PostgreSQL layer for DBO.
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*
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* @package Cake.Model.Datasource.Database
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*/
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class Postgres extends DboSource { |
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|
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/**
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* Driver description
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*
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* @var string
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*/
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public $description = "PostgreSQL DBO Driver"; |
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|
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/**
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* Base driver configuration settings. Merged with user settings.
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*
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* @var array
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*/
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protected $_baseConfig = array( |
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'persistent' => true, |
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'host' => 'localhost', |
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'login' => 'root', |
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'password' => '', |
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'database' => 'cake', |
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'schema' => 'public', |
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'port' => 5432, |
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'encoding' => '', |
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'sslmode' => 'allow', |
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'flags' => array() |
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); |
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|
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/**
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* Columns
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*
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* @var array
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*/
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public $columns = array( |
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'primary_key' => array('name' => 'serial NOT NULL'), |
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'string' => array('name' => 'varchar', 'limit' => '255'), |
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'text' => array('name' => 'text'), |
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'integer' => array('name' => 'integer', 'formatter' => 'intval'), |
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'biginteger' => array('name' => 'bigint', 'limit' => '20'), |
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'float' => array('name' => 'float', 'formatter' => 'floatval'), |
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'decimal' => array('name' => 'decimal', 'formatter' => 'floatval'), |
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'datetime' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'), |
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'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'), |
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'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'), |
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'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'), |
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'binary' => array('name' => 'bytea'), |
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'boolean' => array('name' => 'boolean'), |
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'number' => array('name' => 'numeric'), |
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'inet' => array('name' => 'inet') |
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); |
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|
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/**
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* Starting Quote
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*
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* @var string
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*/
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public $startQuote = '"'; |
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|
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/**
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* Ending Quote
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*
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* @var string
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*/
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public $endQuote = '"'; |
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/**
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* Contains mappings of custom auto-increment sequences, if a table uses a sequence name
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* other than what is dictated by convention.
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*
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* @var array
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*/
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protected $_sequenceMap = array(); |
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|
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/**
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* The set of valid SQL operations usable in a WHERE statement
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*
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* @var array
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*/
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protected $_sqlOps = array('like', 'ilike', 'or', 'not', 'in', 'between', '~', '~\*', '\!~', '\!~\*', 'similar to'); |
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|
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return bool True if successfully connected.
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* @throws MissingConnectionException
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*/
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public function connect() { |
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$config = $this->config; |
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$this->connected = false; |
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|
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$flags = $config['flags'] + array( |
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PDO::ATTR_PERSISTENT => $config['persistent'], |
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION |
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); |
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try {
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$this->_connection = new PDO( |
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"pgsql:host={$config['host']};port={$config['port']};dbname={$config['database']};sslmode={$config['sslmode']}",
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$config['login'], |
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$config['password'], |
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$flags
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); |
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$this->connected = true; |
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if (!empty($config['encoding'])) { |
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$this->setEncoding($config['encoding']); |
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} |
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if (!empty($config['schema'])) { |
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$this->_execute('SET search_path TO "' . $config['schema'] . '"'); |
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} |
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if (!empty($config['settings'])) { |
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foreach ($config['settings'] as $key => $value) { |
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$this->_execute("SET $key TO $value"); |
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} |
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} |
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} catch (PDOException $e) { |
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throw new MissingConnectionException(array( |
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'class' => get_class($this), |
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'message' => $e->getMessage() |
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)); |
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} |
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return $this->connected; |
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} |
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|
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/**
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* Check if PostgreSQL is enabled/loaded
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*
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* @return bool
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*/
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public function enabled() { |
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return in_array('pgsql', PDO::getAvailableDrivers()); |
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} |
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/**
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* Returns an array of tables in the database. If there are no tables, an error is raised and the application exits.
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*
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* @param mixed $data The sources to list.
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* @return array Array of table names in the database
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*/
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public function listSources($data = null) { |
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$cache = parent::listSources(); |
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if ($cache) { |
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return $cache; |
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} |
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$schema = $this->config['schema']; |
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$sql = "SELECT table_name as name FROM INFORMATION_SCHEMA.tables WHERE table_schema = ?"; |
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$result = $this->_execute($sql, array($schema)); |
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if (!$result) { |
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return array(); |
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} |
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$tables = array(); |
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foreach ($result as $item) { |
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$tables[] = $item->name; |
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} |
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$result->closeCursor();
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parent::listSources($tables); |
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return $tables; |
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} |
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|
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/**
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* Returns an array of the fields in given table name.
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*
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* @param Model|string $model Name of database table to inspect
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* @return array Fields in table. Keys are name and type
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*/
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public function describe($model) { |
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$table = $this->fullTableName($model, false, false); |
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$fields = parent::describe($table); |
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$this->_sequenceMap[$table] = array(); |
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$cols = null; |
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if ($fields === null) { |
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$cols = $this->_execute( |
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"SELECT DISTINCT table_schema AS schema, column_name AS name, data_type AS type, is_nullable AS null,
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column_default AS default, ordinal_position AS position, character_maximum_length AS char_length,
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character_octet_length AS oct_length FROM information_schema.columns
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WHERE table_name = ? AND table_schema = ? ORDER BY position",
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array($table, $this->config['schema']) |
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); |
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// @codingStandardsIgnoreStart
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// Postgres columns don't match the coding standards.
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foreach ($cols as $c) { |
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$type = $c->type; |
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if (!empty($c->oct_length) && $c->char_length === null) { |
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if ($c->type === 'character varying') { |
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$length = null; |
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$type = 'text'; |
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} elseif ($c->type === 'uuid') { |
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$length = 36; |
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} else {
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$length = (int)$c->oct_length; |
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} |
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} elseif (!empty($c->char_length)) { |
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$length = (int)$c->char_length; |
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} else {
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$length = $this->length($c->type); |
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} |
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if (empty($length)) { |
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$length = null; |
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} |
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$fields[$c->name] = array( |
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'type' => $this->column($type), |
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'null' => ($c->null === 'NO' ? false : true), |
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'default' => preg_replace( |
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"/^'(.*)'$/",
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"$1",
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preg_replace('/::.*/', '', $c->default) |
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), |
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'length' => $length |
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); |
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if ($model instanceof Model) { |
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if ($c->name === $model->primaryKey) { |
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$fields[$c->name]['key'] = 'primary'; |
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if ($fields[$c->name]['type'] !== 'string') { |
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$fields[$c->name]['length'] = 11; |
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} |
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} |
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} |
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if (
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$fields[$c->name]['default'] === 'NULL' || |
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$c->default === null || |
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preg_match('/nextval\([\'"]?([\w.]+)/', $c->default, $seq) |
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) {
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$fields[$c->name]['default'] = null; |
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if (!empty($seq) && isset($seq[1])) { |
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if (strpos($seq[1], '.') === false) { |
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$sequenceName = $c->schema . '.' . $seq[1]; |
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} else {
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$sequenceName = $seq[1]; |
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} |
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$this->_sequenceMap[$table][$c->name] = $sequenceName; |
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} |
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} |
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if ($fields[$c->name]['type'] === 'timestamp' && $fields[$c->name]['default'] === '') { |
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$fields[$c->name]['default'] = null; |
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} |
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if ($fields[$c->name]['type'] === 'boolean' && !empty($fields[$c->name]['default'])) { |
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$fields[$c->name]['default'] = constant($fields[$c->name]['default']); |
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} |
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} |
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$this->_cacheDescription($table, $fields); |
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} |
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// @codingStandardsIgnoreEnd
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if (isset($model->sequence)) { |
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$this->_sequenceMap[$table][$model->primaryKey] = $model->sequence; |
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} |
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if ($cols) { |
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$cols->closeCursor();
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} |
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return $fields; |
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} |
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/**
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* Returns the ID generated from the previous INSERT operation.
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*
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* @param string $source Name of the database table
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* @param string $field Name of the ID database field. Defaults to "id"
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* @return int
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*/
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public function lastInsertId($source = null, $field = 'id') { |
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$seq = $this->getSequence($source, $field); |
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return $this->_connection->lastInsertId($seq); |
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} |
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/**
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* Gets the associated sequence for the given table/field
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*
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* @param string|Model $table Either a full table name (with prefix) as a string, or a model object
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* @param string $field Name of the ID database field. Defaults to "id"
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* @return string The associated sequence name from the sequence map, defaults to "{$table}_{$field}_seq"
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*/
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public function getSequence($table, $field = 'id') { |
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if (is_object($table)) { |
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$table = $this->fullTableName($table, false, false); |
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} |
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if (!isset($this->_sequenceMap[$table])) { |
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$this->describe($table); |
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} |
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if (isset($this->_sequenceMap[$table][$field])) { |
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return $this->_sequenceMap[$table][$field]; |
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} |
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return "{$table}_{$field}_seq"; |
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} |
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/**
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* Reset a sequence based on the MAX() value of $column. Useful
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* for resetting sequences after using insertMulti().
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*
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* @param string $table The name of the table to update.
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* @param string $column The column to use when resetting the sequence value,
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* the sequence name will be fetched using Postgres::getSequence();
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* @return bool success.
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*/
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public function resetSequence($table, $column) { |
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$tableName = $this->fullTableName($table, false, false); |
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$fullTable = $this->fullTableName($table); |
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$sequence = $this->value($this->getSequence($tableName, $column)); |
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$column = $this->name($column); |
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$this->execute("SELECT setval($sequence, (SELECT MAX($column) FROM $fullTable))"); |
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return true; |
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} |
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|
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/**
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* Deletes all the records in a table and drops all associated auto-increment sequences
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*
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* @param string|Model $table A string or model class representing the table to be truncated
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* @param bool $reset true for resetting the sequence, false to leave it as is.
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* and if 1, sequences are not modified
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* @return bool SQL TRUNCATE TABLE statement, false if not applicable.
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*/
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public function truncate($table, $reset = false) { |
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$table = $this->fullTableName($table, false, false); |
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if (!isset($this->_sequenceMap[$table])) { |
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$cache = $this->cacheSources; |
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$this->cacheSources = false; |
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$this->describe($table); |
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$this->cacheSources = $cache; |
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} |
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if ($this->execute('DELETE FROM ' . $this->fullTableName($table))) { |
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if (isset($this->_sequenceMap[$table]) && $reset != true) { |
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foreach ($this->_sequenceMap[$table] as $sequence) { |
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$quoted = $this->name($sequence); |
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$this->_execute("ALTER SEQUENCE {$quoted} RESTART WITH 1"); |
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} |
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} |
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return true; |
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} |
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return false; |
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} |
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|
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/**
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* Prepares field names to be quoted by parent
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*
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* @param string $data The name to format.
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* @return string SQL field
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*/
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public function name($data) { |
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if (is_string($data)) { |
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$data = str_replace('"__"', '__', $data); |
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} |
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return parent::name($data); |
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} |
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|
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/**
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* Generates the fields list of an SQL query.
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*
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* @param Model $model The model to get fields for.
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* @param string $alias Alias table name.
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* @param mixed $fields The list of fields to get.
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* @param bool $quote Whether or not to quote identifiers.
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* @return array
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*/
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public function fields(Model $model, $alias = null, $fields = array(), $quote = true) { |
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if (empty($alias)) { |
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$alias = $model->alias; |
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} |
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$fields = parent::fields($model, $alias, $fields, false); |
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|
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if (!$quote) { |
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return $fields; |
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} |
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$count = count($fields); |
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|
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if ($count >= 1 && !preg_match('/^\s*COUNT\(\*/', $fields[0])) { |
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$result = array(); |
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for ($i = 0; $i < $count; $i++) { |
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if (!preg_match('/^.+\\(.*\\)/', $fields[$i]) && !preg_match('/\s+AS\s+/', $fields[$i])) { |
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if (substr($fields[$i], -1) === '*') { |
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if (strpos($fields[$i], '.') !== false && $fields[$i] != $alias . '.*') { |
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$build = explode('.', $fields[$i]); |
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$AssociatedModel = $model->{$build[0]}; |
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} else {
|
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$AssociatedModel = $model; |
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} |
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|
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$_fields = $this->fields($AssociatedModel, $AssociatedModel->alias, array_keys($AssociatedModel->schema())); |
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$result = array_merge($result, $_fields); |
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continue;
|
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} |
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|
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$prepend = ''; |
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if (strpos($fields[$i], 'DISTINCT') !== false) { |
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$prepend = 'DISTINCT '; |
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$fields[$i] = trim(str_replace('DISTINCT', '', $fields[$i])); |
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} |
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|
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if (strrpos($fields[$i], '.') === false) { |
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$fields[$i] = $prepend . $this->name($alias) . '.' . $this->name($fields[$i]) . ' AS ' . $this->name($alias . '__' . $fields[$i]); |
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} else {
|
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$build = explode('.', $fields[$i]); |
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$fields[$i] = $prepend . $this->name($build[0]) . '.' . $this->name($build[1]) . ' AS ' . $this->name($build[0] . '__' . $build[1]); |
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} |
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} else {
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$fields[$i] = preg_replace_callback('/\(([\s\.\w]+)\)/', array(&$this, '_quoteFunctionField'), $fields[$i]); |
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} |
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$result[] = $fields[$i]; |
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} |
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return $result; |
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} |
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return $fields; |
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} |
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|
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/**
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* Auxiliary function to quote matched `(Model.fields)` from a preg_replace_callback call
|
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* Quotes the fields in a function call.
|
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*
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* @param string $match matched string
|
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* @return string quoted string
|
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*/
|
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protected function _quoteFunctionField($match) { |
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$prepend = ''; |
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if (strpos($match[1], 'DISTINCT') !== false) { |
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$prepend = 'DISTINCT '; |
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$match[1] = trim(str_replace('DISTINCT', '', $match[1])); |
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} |
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$constant = preg_match('/^\d+|NULL|FALSE|TRUE$/i', $match[1]); |
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|
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if (!$constant && strpos($match[1], '.') === false) { |
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$match[1] = $this->name($match[1]); |
| 453 |
} elseif (!$constant) { |
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$parts = explode('.', $match[1]); |
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if (!Hash::numeric($parts)) { |
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$match[1] = $this->name($match[1]); |
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} |
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} |
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return '(' . $prepend . $match[1] . ')'; |
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} |
| 461 |
|
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/**
|
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* Returns an array of the indexes in given datasource name.
|
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*
|
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* @param string $model Name of model to inspect
|
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* @return array Fields in table. Keys are column and unique
|
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*/
|
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public function index($model) { |
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$index = array(); |
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$table = $this->fullTableName($model, false, false); |
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if ($table) { |
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$indexes = $this->query("SELECT c2.relname, i.indisprimary, i.indisunique, i.indisclustered, i.indisvalid, pg_catalog.pg_get_indexdef(i.indexrelid, 0, true) as statement, c2.reltablespace |
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FROM pg_catalog.pg_class c, pg_catalog.pg_class c2, pg_catalog.pg_index i
|
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WHERE c.oid = (
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SELECT c.oid
|
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FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
|
| 477 |
WHERE c.relname ~ '^(" . $table . ")$' |
| 478 |
AND pg_catalog.pg_table_is_visible(c.oid)
|
| 479 |
AND n.nspname ~ '^(" . $this->config['schema'] . ")$' |
| 480 |
)
|
| 481 |
AND c.oid = i.indrelid AND i.indexrelid = c2.oid
|
| 482 |
ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname", false); |
| 483 |
foreach ($indexes as $info) { |
| 484 |
$key = array_pop($info); |
| 485 |
if ($key['indisprimary']) { |
| 486 |
$key['relname'] = 'PRIMARY'; |
| 487 |
} |
| 488 |
preg_match('/\(([^\)]+)\)/', $key['statement'], $indexColumns); |
| 489 |
$parsedColumn = $indexColumns[1]; |
| 490 |
if (strpos($indexColumns[1], ',') !== false) { |
| 491 |
$parsedColumn = explode(', ', $indexColumns[1]); |
| 492 |
} |
| 493 |
$index[$key['relname']]['unique'] = $key['indisunique']; |
| 494 |
$index[$key['relname']]['column'] = $parsedColumn; |
| 495 |
} |
| 496 |
} |
| 497 |
return $index; |
| 498 |
} |
| 499 |
|
| 500 |
/**
|
| 501 |
* Alter the Schema of a table.
|
| 502 |
*
|
| 503 |
* @param array $compare Results of CakeSchema::compare()
|
| 504 |
* @param string $table name of the table
|
| 505 |
* @return array
|
| 506 |
*/
|
| 507 |
public function alterSchema($compare, $table = null) { |
| 508 |
if (!is_array($compare)) { |
| 509 |
return false; |
| 510 |
} |
| 511 |
$out = ''; |
| 512 |
$colList = array(); |
| 513 |
foreach ($compare as $curTable => $types) { |
| 514 |
$indexes = $colList = array(); |
| 515 |
if (!$table || $table === $curTable) { |
| 516 |
$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n"; |
| 517 |
foreach ($types as $type => $column) { |
| 518 |
if (isset($column['indexes'])) { |
| 519 |
$indexes[$type] = $column['indexes']; |
| 520 |
unset($column['indexes']); |
| 521 |
} |
| 522 |
switch ($type) { |
| 523 |
case 'add': |
| 524 |
foreach ($column as $field => $col) { |
| 525 |
$col['name'] = $field; |
| 526 |
$colList[] = 'ADD COLUMN ' . $this->buildColumn($col); |
| 527 |
} |
| 528 |
break;
|
| 529 |
case 'drop': |
| 530 |
foreach ($column as $field => $col) { |
| 531 |
$col['name'] = $field; |
| 532 |
$colList[] = 'DROP COLUMN ' . $this->name($field); |
| 533 |
} |
| 534 |
break;
|
| 535 |
case 'change': |
| 536 |
$schema = $this->describe($curTable); |
| 537 |
foreach ($column as $field => $col) { |
| 538 |
if (!isset($col['name'])) { |
| 539 |
$col['name'] = $field; |
| 540 |
} |
| 541 |
$original = $schema[$field]; |
| 542 |
$fieldName = $this->name($field); |
| 543 |
|
| 544 |
$default = isset($col['default']) ? $col['default'] : null; |
| 545 |
$nullable = isset($col['null']) ? $col['null'] : null; |
| 546 |
$boolToInt = $original['type'] === 'boolean' && $col['type'] === 'integer'; |
| 547 |
unset($col['default'], $col['null']); |
| 548 |
if ($field !== $col['name']) { |
| 549 |
$newName = $this->name($col['name']); |
| 550 |
$out .= "\tRENAME {$fieldName} TO {$newName};\n"; |
| 551 |
$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n"; |
| 552 |
$fieldName = $newName; |
| 553 |
} |
| 554 |
|
| 555 |
if ($boolToInt) { |
| 556 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' SET DEFAULT NULL'; |
| 557 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col)) . ' USING CASE WHEN TRUE THEN 1 ELSE 0 END'; |
| 558 |
} else {
|
| 559 |
if ($original['type'] === 'text' && $col['type'] === 'integer') { |
| 560 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col)) . " USING cast({$fieldName} as INTEGER)"; |
| 561 |
} else {
|
| 562 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col)); |
| 563 |
} |
| 564 |
} |
| 565 |
|
| 566 |
if (isset($nullable)) { |
| 567 |
$nullable = ($nullable) ? 'DROP NOT NULL' : 'SET NOT NULL'; |
| 568 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' ' . $nullable; |
| 569 |
} |
| 570 |
|
| 571 |
if (isset($default)) { |
| 572 |
if (!$boolToInt) { |
| 573 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' SET DEFAULT ' . $this->value($default, $col['type']); |
| 574 |
} |
| 575 |
} else {
|
| 576 |
$colList[] = 'ALTER COLUMN ' . $fieldName . ' DROP DEFAULT'; |
| 577 |
} |
| 578 |
|
| 579 |
} |
| 580 |
break;
|
| 581 |
} |
| 582 |
} |
| 583 |
if (isset($indexes['drop']['PRIMARY'])) { |
| 584 |
$colList[] = 'DROP CONSTRAINT ' . $curTable . '_pkey'; |
| 585 |
} |
| 586 |
if (isset($indexes['add']['PRIMARY'])) { |
| 587 |
$cols = $indexes['add']['PRIMARY']['column']; |
| 588 |
if (is_array($cols)) { |
| 589 |
$cols = implode(', ', $cols); |
| 590 |
} |
| 591 |
$colList[] = 'ADD PRIMARY KEY (' . $cols . ')'; |
| 592 |
} |
| 593 |
|
| 594 |
if (!empty($colList)) { |
| 595 |
$out .= "\t" . implode(",\n\t", $colList) . ";\n\n"; |
| 596 |
} else {
|
| 597 |
$out = ''; |
| 598 |
} |
| 599 |
$out .= implode(";\n\t", $this->_alterIndexes($curTable, $indexes)); |
| 600 |
} |
| 601 |
} |
| 602 |
return $out; |
| 603 |
} |
| 604 |
|
| 605 |
/**
|
| 606 |
* Generate PostgreSQL index alteration statements for a table.
|
| 607 |
*
|
| 608 |
* @param string $table Table to alter indexes for
|
| 609 |
* @param array $indexes Indexes to add and drop
|
| 610 |
* @return array Index alteration statements
|
| 611 |
*/
|
| 612 |
protected function _alterIndexes($table, $indexes) { |
| 613 |
$alter = array(); |
| 614 |
if (isset($indexes['drop'])) { |
| 615 |
foreach ($indexes['drop'] as $name => $value) { |
| 616 |
$out = 'DROP '; |
| 617 |
if ($name === 'PRIMARY') { |
| 618 |
continue;
|
| 619 |
} else {
|
| 620 |
$out .= 'INDEX ' . $name; |
| 621 |
} |
| 622 |
$alter[] = $out; |
| 623 |
} |
| 624 |
} |
| 625 |
if (isset($indexes['add'])) { |
| 626 |
foreach ($indexes['add'] as $name => $value) { |
| 627 |
$out = 'CREATE '; |
| 628 |
if ($name === 'PRIMARY') { |
| 629 |
continue;
|
| 630 |
} else {
|
| 631 |
if (!empty($value['unique'])) { |
| 632 |
$out .= 'UNIQUE '; |
| 633 |
} |
| 634 |
$out .= 'INDEX '; |
| 635 |
} |
| 636 |
if (is_array($value['column'])) { |
| 637 |
$out .= $name . ' ON ' . $table . ' (' . implode(', ', array_map(array(&$this, 'name'), $value['column'])) . ')'; |
| 638 |
} else {
|
| 639 |
$out .= $name . ' ON ' . $table . ' (' . $this->name($value['column']) . ')'; |
| 640 |
} |
| 641 |
$alter[] = $out; |
| 642 |
} |
| 643 |
} |
| 644 |
return $alter; |
| 645 |
} |
| 646 |
|
| 647 |
/**
|
| 648 |
* Returns a limit statement in the correct format for the particular database.
|
| 649 |
*
|
| 650 |
* @param int $limit Limit of results returned
|
| 651 |
* @param int $offset Offset from which to start results
|
| 652 |
* @return string SQL limit/offset statement
|
| 653 |
*/
|
| 654 |
public function limit($limit, $offset = null) { |
| 655 |
if ($limit) { |
| 656 |
$rt = sprintf(' LIMIT %u', $limit); |
| 657 |
if ($offset) { |
| 658 |
$rt .= sprintf(' OFFSET %u', $offset); |
| 659 |
} |
| 660 |
return $rt; |
| 661 |
} |
| 662 |
return null; |
| 663 |
} |
| 664 |
|
| 665 |
/**
|
| 666 |
* Converts database-layer column types to basic types
|
| 667 |
*
|
| 668 |
* @param string $real Real database-layer column type (i.e. "varchar(255)")
|
| 669 |
* @return string Abstract column type (i.e. "string")
|
| 670 |
*/
|
| 671 |
public function column($real) { |
| 672 |
if (is_array($real)) { |
| 673 |
$col = $real['name']; |
| 674 |
if (isset($real['limit'])) { |
| 675 |
$col .= '(' . $real['limit'] . ')'; |
| 676 |
} |
| 677 |
return $col; |
| 678 |
} |
| 679 |
|
| 680 |
$col = str_replace(')', '', $real); |
| 681 |
|
| 682 |
if (strpos($col, '(') !== false) { |
| 683 |
list($col, $limit) = explode('(', $col); |
| 684 |
} |
| 685 |
|
| 686 |
$floats = array( |
| 687 |
'float', 'float4', 'float8', 'double', 'double precision', 'real' |
| 688 |
); |
| 689 |
|
| 690 |
switch (true) { |
| 691 |
case (in_array($col, array('date', 'time', 'inet', 'boolean'))): |
| 692 |
return $col; |
| 693 |
case (strpos($col, 'timestamp') !== false): |
| 694 |
return 'datetime'; |
| 695 |
case (strpos($col, 'time') === 0): |
| 696 |
return 'time'; |
| 697 |
case ($col === 'bigint'): |
| 698 |
return 'biginteger'; |
| 699 |
case (strpos($col, 'int') !== false && $col !== 'interval'): |
| 700 |
return 'integer'; |
| 701 |
case (strpos($col, 'char') !== false || $col === 'uuid'): |
| 702 |
return 'string'; |
| 703 |
case (strpos($col, 'text') !== false): |
| 704 |
return 'text'; |
| 705 |
case (strpos($col, 'bytea') !== false): |
| 706 |
return 'binary'; |
| 707 |
case ($col === 'decimal' || $col === 'numeric'): |
| 708 |
return 'decimal'; |
| 709 |
case (in_array($col, $floats)): |
| 710 |
return 'float'; |
| 711 |
default:
|
| 712 |
return 'text'; |
| 713 |
} |
| 714 |
} |
| 715 |
|
| 716 |
/**
|
| 717 |
* Gets the length of a database-native column description, or null if no length
|
| 718 |
*
|
| 719 |
* @param string $real Real database-layer column type (i.e. "varchar(255)")
|
| 720 |
* @return int An integer representing the length of the column
|
| 721 |
*/
|
| 722 |
public function length($real) { |
| 723 |
$col = str_replace(array(')', 'unsigned'), '', $real); |
| 724 |
$limit = null; |
| 725 |
|
| 726 |
if (strpos($col, '(') !== false) { |
| 727 |
list($col, $limit) = explode('(', $col); |
| 728 |
} |
| 729 |
if ($col === 'uuid') { |
| 730 |
return 36; |
| 731 |
} |
| 732 |
if ($limit) { |
| 733 |
return (int)$limit; |
| 734 |
} |
| 735 |
return null; |
| 736 |
} |
| 737 |
|
| 738 |
/**
|
| 739 |
* resultSet method
|
| 740 |
*
|
| 741 |
* @param array &$results The results
|
| 742 |
* @return void
|
| 743 |
*/
|
| 744 |
public function resultSet(&$results) { |
| 745 |
$this->map = array(); |
| 746 |
$numFields = $results->columnCount(); |
| 747 |
$index = 0; |
| 748 |
$j = 0; |
| 749 |
|
| 750 |
while ($j < $numFields) { |
| 751 |
$column = $results->getColumnMeta($j); |
| 752 |
if (strpos($column['name'], '__')) { |
| 753 |
list($table, $name) = explode('__', $column['name']); |
| 754 |
$this->map[$index++] = array($table, $name, $column['native_type']); |
| 755 |
} else {
|
| 756 |
$this->map[$index++] = array(0, $column['name'], $column['native_type']); |
| 757 |
} |
| 758 |
$j++;
|
| 759 |
} |
| 760 |
} |
| 761 |
|
| 762 |
/**
|
| 763 |
* Fetches the next row from the current result set
|
| 764 |
*
|
| 765 |
* @return array
|
| 766 |
*/
|
| 767 |
public function fetchResult() { |
| 768 |
if ($row = $this->_result->fetch(PDO::FETCH_NUM)) { |
| 769 |
$resultRow = array(); |
| 770 |
|
| 771 |
foreach ($this->map as $index => $meta) { |
| 772 |
list($table, $column, $type) = $meta; |
| 773 |
|
| 774 |
switch ($type) { |
| 775 |
case 'bool': |
| 776 |
$resultRow[$table][$column] = $row[$index] === null ? null : $this->boolean($row[$index]); |
| 777 |
break;
|
| 778 |
case 'binary': |
| 779 |
case 'bytea': |
| 780 |
$resultRow[$table][$column] = $row[$index] === null ? null : stream_get_contents($row[$index]); |
| 781 |
break;
|
| 782 |
default:
|
| 783 |
$resultRow[$table][$column] = $row[$index]; |
| 784 |
} |
| 785 |
} |
| 786 |
return $resultRow; |
| 787 |
} |
| 788 |
$this->_result->closeCursor();
|
| 789 |
return false; |
| 790 |
} |
| 791 |
|
| 792 |
/**
|
| 793 |
* Translates between PHP boolean values and PostgreSQL boolean values
|
| 794 |
*
|
| 795 |
* @param mixed $data Value to be translated
|
| 796 |
* @param bool $quote true to quote a boolean to be used in a query, false to return the boolean value
|
| 797 |
* @return bool Converted boolean value
|
| 798 |
*/
|
| 799 |
public function boolean($data, $quote = false) { |
| 800 |
switch (true) { |
| 801 |
case ($data === true || $data === false): |
| 802 |
$result = $data; |
| 803 |
break;
|
| 804 |
case ($data === 't' || $data === 'f'): |
| 805 |
$result = ($data === 't'); |
| 806 |
break;
|
| 807 |
case ($data === 'true' || $data === 'false'): |
| 808 |
$result = ($data === 'true'); |
| 809 |
break;
|
| 810 |
case ($data === 'TRUE' || $data === 'FALSE'): |
| 811 |
$result = ($data === 'TRUE'); |
| 812 |
break;
|
| 813 |
default:
|
| 814 |
$result = (bool)$data; |
| 815 |
} |
| 816 |
|
| 817 |
if ($quote) { |
| 818 |
return ($result) ? 'TRUE' : 'FALSE'; |
| 819 |
} |
| 820 |
return (bool)$result; |
| 821 |
} |
| 822 |
|
| 823 |
/**
|
| 824 |
* Sets the database encoding
|
| 825 |
*
|
| 826 |
* @param mixed $enc Database encoding
|
| 827 |
* @return bool True on success, false on failure
|
| 828 |
*/
|
| 829 |
public function setEncoding($enc) { |
| 830 |
return $this->_execute('SET NAMES ' . $this->value($enc)) !== false; |
| 831 |
} |
| 832 |
|
| 833 |
/**
|
| 834 |
* Gets the database encoding
|
| 835 |
*
|
| 836 |
* @return string The database encoding
|
| 837 |
*/
|
| 838 |
public function getEncoding() { |
| 839 |
$result = $this->_execute('SHOW client_encoding')->fetch(); |
| 840 |
if ($result === false) { |
| 841 |
return false; |
| 842 |
} |
| 843 |
return (isset($result['client_encoding'])) ? $result['client_encoding'] : false; |
| 844 |
} |
| 845 |
|
| 846 |
/**
|
| 847 |
* Generate a Postgres-native column schema string
|
| 848 |
*
|
| 849 |
* @param array $column An array structured like the following:
|
| 850 |
* array('name'=>'value', 'type'=>'value'[, options]),
|
| 851 |
* where options can be 'default', 'length', or 'key'.
|
| 852 |
* @return string
|
| 853 |
*/
|
| 854 |
public function buildColumn($column) { |
| 855 |
$col = $this->columns[$column['type']]; |
| 856 |
if (!isset($col['length']) && !isset($col['limit'])) { |
| 857 |
unset($column['length']); |
| 858 |
} |
| 859 |
$out = parent::buildColumn($column); |
| 860 |
|
| 861 |
$out = preg_replace( |
| 862 |
'/integer\([0-9]+\)/',
|
| 863 |
'integer',
|
| 864 |
$out
|
| 865 |
); |
| 866 |
$out = preg_replace( |
| 867 |
'/bigint\([0-9]+\)/',
|
| 868 |
'bigint',
|
| 869 |
$out
|
| 870 |
); |
| 871 |
|
| 872 |
$out = str_replace('integer serial', 'serial', $out); |
| 873 |
$out = str_replace('bigint serial', 'bigserial', $out); |
| 874 |
if (strpos($out, 'timestamp DEFAULT')) { |
| 875 |
if (isset($column['null']) && $column['null']) { |
| 876 |
$out = str_replace('DEFAULT NULL', '', $out); |
| 877 |
} else {
|
| 878 |
$out = str_replace('DEFAULT NOT NULL', '', $out); |
| 879 |
} |
| 880 |
} |
| 881 |
if (strpos($out, 'DEFAULT DEFAULT')) { |
| 882 |
if (isset($column['null']) && $column['null']) { |
| 883 |
$out = str_replace('DEFAULT DEFAULT', 'DEFAULT NULL', $out); |
| 884 |
} elseif (in_array($column['type'], array('integer', 'float'))) { |
| 885 |
$out = str_replace('DEFAULT DEFAULT', 'DEFAULT 0', $out); |
| 886 |
} elseif ($column['type'] === 'boolean') { |
| 887 |
$out = str_replace('DEFAULT DEFAULT', 'DEFAULT FALSE', $out); |
| 888 |
} |
| 889 |
} |
| 890 |
return $out; |
| 891 |
} |
| 892 |
|
| 893 |
/**
|
| 894 |
* Format indexes for create table
|
| 895 |
*
|
| 896 |
* @param array $indexes The index to build
|
| 897 |
* @param string $table The table name.
|
| 898 |
* @return string
|
| 899 |
*/
|
| 900 |
public function buildIndex($indexes, $table = null) { |
| 901 |
$join = array(); |
| 902 |
if (!is_array($indexes)) { |
| 903 |
return array(); |
| 904 |
} |
| 905 |
foreach ($indexes as $name => $value) { |
| 906 |
if ($name === 'PRIMARY') { |
| 907 |
$out = 'PRIMARY KEY (' . $this->name($value['column']) . ')'; |
| 908 |
} else {
|
| 909 |
$out = 'CREATE '; |
| 910 |
if (!empty($value['unique'])) { |
| 911 |
$out .= 'UNIQUE '; |
| 912 |
} |
| 913 |
if (is_array($value['column'])) { |
| 914 |
$value['column'] = implode(', ', array_map(array(&$this, 'name'), $value['column'])); |
| 915 |
} else {
|
| 916 |
$value['column'] = $this->name($value['column']); |
| 917 |
} |
| 918 |
$out .= "INDEX {$name} ON {$table}({$value['column']});"; |
| 919 |
} |
| 920 |
$join[] = $out; |
| 921 |
} |
| 922 |
return $join; |
| 923 |
} |
| 924 |
|
| 925 |
/**
|
| 926 |
* Overrides DboSource::renderStatement to handle schema generation with Postgres-style indexes
|
| 927 |
*
|
| 928 |
* @param string $type The query type.
|
| 929 |
* @param array $data The array of data to render.
|
| 930 |
* @return string
|
| 931 |
*/
|
| 932 |
public function renderStatement($type, $data) { |
| 933 |
switch (strtolower($type)) { |
| 934 |
case 'schema': |
| 935 |
extract($data); |
| 936 |
|
| 937 |
foreach ($indexes as $i => $index) { |
| 938 |
if (preg_match('/PRIMARY KEY/', $index)) { |
| 939 |
unset($indexes[$i]); |
| 940 |
$columns[] = $index; |
| 941 |
break;
|
| 942 |
} |
| 943 |
} |
| 944 |
$join = array('columns' => ",\n\t", 'indexes' => "\n"); |
| 945 |
|
| 946 |
foreach (array('columns', 'indexes') as $var) { |
| 947 |
if (is_array(${$var})) { |
| 948 |
${$var} = implode($join[$var], array_filter(${$var}));
|
| 949 |
} |
| 950 |
} |
| 951 |
return "CREATE TABLE {$table} (\n\t{$columns}\n);\n{$indexes}"; |
| 952 |
default:
|
| 953 |
return parent::renderStatement($type, $data); |
| 954 |
} |
| 955 |
} |
| 956 |
|
| 957 |
/**
|
| 958 |
* Gets the schema name
|
| 959 |
*
|
| 960 |
* @return string The schema name
|
| 961 |
*/
|
| 962 |
public function getSchemaName() { |
| 963 |
return $this->config['schema']; |
| 964 |
} |
| 965 |
|
| 966 |
/**
|
| 967 |
* Check if the server support nested transactions
|
| 968 |
*
|
| 969 |
* @return bool
|
| 970 |
*/
|
| 971 |
public function nestedTransactionSupported() { |
| 972 |
return $this->useNestedTransactions && version_compare($this->getVersion(), '8.0', '>='); |
| 973 |
} |
| 974 |
|
| 975 |
} |