mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 11:28:25 +00:00
646 lines
18 KiB
PHP
646 lines
18 KiB
PHP
<?php
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/**
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* MS SQL layer for DBO
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake.libs.model.datasources.dbo
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* @since CakePHP(tm) v 0.10.5.1790
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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App::uses('DboSource', 'Model/Datasource');
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/**
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* MS SQL layer for DBO
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*
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* Long description for class
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*
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* @package cake.libs.model.datasources.dbo
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*/
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class Mssql extends DboSource {
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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 = "MS SQL DBO Driver";
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/**
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* Starting quote character for quoted identifiers
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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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* Ending quote character for quoted identifiers
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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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* Creates a map between field aliases and numeric indexes. Workaround for the
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* SQL Server driver's 30-character column name limitation.
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*
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* @var array
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*/
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private $__fieldMappings = array();
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/**
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* Base configuration settings for MS SQL driver
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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' => '(local)\sqlexpress',
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'login' => '',
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'password' => '',
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'database' => 'cake'
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);
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/**
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* MS SQL column definition
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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' => 'IDENTITY (1, 1) 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' => 'int', 'formatter' => 'intval'),
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'float' => array('name' => 'numeric', 'formatter' => 'floatval'),
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'datetime' => array('name' => 'datetime', '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' => 'datetime', 'format' => 'H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'datetime', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'image'),
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'boolean' => array('name' => 'bit')
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);
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/**
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* Index of basic SQL commands
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*
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* @var array
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* @access protected
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*/
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protected $_commands = array(
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'begin' => 'BEGIN TRANSACTION',
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'commit' => 'COMMIT',
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'rollback' => 'ROLLBACK'
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);
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/**
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* Define if the last query had error
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*
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* @var string
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* @access private
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*/
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private $__lastQueryHadError = false;
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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*/
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function connect() {
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$config = $this->config;
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$this->connected = false;
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try {
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$flags = array(PDO::ATTR_PERSISTENT => $config['persistent']);
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if (!empty($config['encoding'])) {
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$flags[PDO::SQLSRV_ATTR_ENCODING] = $config['encoding'];
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}
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$this->_connection = new PDO(
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"sqlsrv:server={$config['host']};Database={$config['database']}",
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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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} catch (PDOException $e) {
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throw new MissingConnectionException(array('class' => $e->getMessage()));
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}
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// $this->_execute("SET DATEFORMAT ymd");
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return $this->connected;
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}
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/**
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* Check that PDO SQL Server is installed/loaded
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*
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* @return boolean
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*/
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public function enabled() {
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return in_array('sqlsrv', PDO::getAvailableDrivers());
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}
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/**
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* Returns an array of sources (tables) in the database.
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*
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* @return array Array of tablenames in the database
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*/
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public function listSources() {
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$cache = parent::listSources();
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if ($cache !== null) {
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return $cache;
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}
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$result = $this->_execute("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE'"));
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if (!$result) {
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$result->closeCursor();
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return array();
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}
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$tables = array();
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while ($line = $result->fetch(PDO::FETCH_ASSOC)) {
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$tables[] = $line['TABLE_NAME'];
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}
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$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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* Returns an array of the fields in given table name.
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*
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* @param Model $model Model object to describe
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* @return array Fields in table. Keys are name and type
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*/
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function describe($model) {
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$cache = parent::describe($model);
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if ($cache != null) {
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return $cache;
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}
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$fields = false;
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$table = $this->fullTableName($model, false);
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$cols = $this->_execute("SELECT COLUMN_NAME as Field, DATA_TYPE as Type, COL_LENGTH('" . $table . "', COLUMN_NAME) as Length, IS_NULLABLE As [Null], COLUMN_DEFAULT as [Default], COLUMNPROPERTY(OBJECT_ID('" . $table . "'), COLUMN_NAME, 'IsIdentity') as [Key], NUMERIC_SCALE as Size FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" . $table . "'");
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if (!$cols) {
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throw new CakeException(__d('cake_dev', 'Could not describe table for %s', $model->name));
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}
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foreach ($cols as $column) {
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$field = $column->Field;
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$fields[$field] = array(
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'type' => $this->column($column->Type),
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'null' => ($column->Null === 'YES' ? true : false),
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'default' => preg_replace("/^[(]{1,2}'?([^')]*)?'?[)]{1,2}$/", "$1", $column->Default),
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'length' => intval($column->Type),
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'key' => ($column->Key == '1') ? 'primary' : false
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);
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if ($fields[$field]['default'] === 'null') {
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$fields[$field]['default'] = null;
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} else {
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$this->value($fields[$field]['default'], $fields[$field]['type']);
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}
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if ($fields[$field]['key'] !== false && $fields[$field]['type'] == 'integer') {
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$fields[$field]['length'] = 11;
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} elseif ($fields[$field]['key'] === false) {
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unset($fields[$field]['key']);
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}
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if (in_array($fields[$field]['type'], array('date', 'time', 'datetime', 'timestamp'))) {
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$fields[$field]['length'] = null;
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}
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}
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$this->__cacheDescription($table, $fields);
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$cols->closeCursor();
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return $fields;
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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
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* @param string $alias Alias tablename
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* @param mixed $fields
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* @return array
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*/
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function fields($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, $fields, false);
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$count = count($fields);
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if ($count >= 1 && strpos($fields[0], 'COUNT(*)') === false) {
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$result = array();
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for ($i = 0; $i < $count; $i++) {
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$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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$fieldAlias = count($this->__fieldMappings);
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if (!preg_match('/\s+AS\s+/i', $fields[$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 = $model;
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}
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$_fields = $this->fields($AssociatedModel, $AssociatedModel->alias, array_keys($AssociatedModel->schema()));
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$result = array_merge($result, $_fields);
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continue;
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}
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if (strpos($fields[$i], '.') === false) {
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$this->__fieldMappings[$alias . '__' . $fieldAlias] = $alias . '.' . $fields[$i];
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$fieldName = $this->name($alias . '.' . $fields[$i]);
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$fieldAlias = $this->name($alias . '__' . $fieldAlias);
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} else {
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$build = explode('.', $fields[$i]);
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$this->__fieldMappings[$build[0] . '__' . $fieldAlias] = $fields[$i];
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$fieldName = $this->name($build[0] . '.' . $build[1]);
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$fieldAlias = $this->name(preg_replace("/^\[(.+)\]$/", "$1", $build[0]) . '__' . $fieldAlias);
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}
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if ($model->getColumnType($fields[$i]) == 'datetime') {
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$fieldName = "CONVERT(VARCHAR(20), {$fieldName}, 20)";
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}
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$fields[$i] = "{$fieldName} AS {$fieldAlias}";
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}
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$result[] = $prepend . $fields[$i];
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}
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return $result;
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} else {
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return $fields;
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}
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}
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/**
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* Generates and executes an SQL INSERT statement for given model, fields, and values.
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* Removes Identity (primary key) column from update data before returning to parent, if
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* value is empty.
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*
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* @param Model $model
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* @param array $fields
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* @param array $values
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* @param mixed $conditions
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* @return array
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*/
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function create($model, $fields = null, $values = null) {
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if (!empty($values)) {
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$fields = array_combine($fields, $values);
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}
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$primaryKey = $this->_getPrimaryKey($model);
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if (array_key_exists($primaryKey, $fields)) {
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if (empty($fields[$primaryKey])) {
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unset($fields[$primaryKey]);
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} else {
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$this->_execute('SET IDENTITY_INSERT ' . $this->fullTableName($model) . ' ON');
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}
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}
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$result = parent::create($model, array_keys($fields), array_values($fields));
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if (array_key_exists($primaryKey, $fields) && !empty($fields[$primaryKey])) {
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$this->_execute('SET IDENTITY_INSERT ' . $this->fullTableName($model) . ' OFF');
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}
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return $result;
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}
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/**
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* Generates and executes an SQL UPDATE statement for given model, fields, and values.
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* Removes Identity (primary key) column from update data before returning to parent.
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*
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* @param Model $model
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* @param array $fields
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* @param array $values
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* @param mixed $conditions
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* @return array
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*/
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function update($model, $fields = array(), $values = null, $conditions = null) {
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if (!empty($values)) {
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$fields = array_combine($fields, $values);
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}
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if (isset($fields[$model->primaryKey])) {
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unset($fields[$model->primaryKey]);
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}
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if (empty($fields)) {
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return true;
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}
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return parent::update($model, array_keys($fields), array_values($fields), $conditions);
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}
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/**
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* Returns a limit statement in the correct format for the particular database.
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*
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* @param integer $limit Limit of results returned
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* @param integer $offset Offset from which to start results
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* @return string SQL limit/offset statement
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*/
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function limit($limit, $offset = null) {
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if ($limit) {
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$rt = '';
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if (!strpos(strtolower($limit), 'top') || strpos(strtolower($limit), 'top') === 0) {
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$rt = ' TOP';
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}
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$rt .= ' ' . $limit;
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if (is_int($offset) && $offset > 0) {
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$rt .= ' OFFSET ' . $offset;
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}
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return $rt;
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}
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return null;
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}
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/**
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* Converts database-layer column types to basic types
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*
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* @param string $real Real database-layer column type (i.e. "varchar(255)")
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* @return string Abstract column type (i.e. "string")
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*/
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function column($real) {
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if (is_array($real)) {
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$col = $real['name'];
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if (isset($real['limit'])) {
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$col .= '(' . $real['limit'] . ')';
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}
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return $col;
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}
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$col = str_replace(')', '', $real);
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$limit = null;
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if (strpos($col, '(') !== false) {
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list($col, $limit) = explode('(', $col);
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}
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if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
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return $col;
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}
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if ($col == 'bit') {
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return 'boolean';
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}
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if (strpos($col, 'int') !== false) {
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return 'integer';
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}
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if (strpos($col, 'char') !== false) {
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return 'string';
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}
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if (strpos($col, 'text') !== false) {
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return 'text';
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}
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if (strpos($col, 'binary') !== false || $col == 'image') {
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return 'binary';
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}
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if (in_array($col, array('float', 'real', 'decimal', 'numeric'))) {
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return 'float';
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}
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return 'text';
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $results
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*/
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function resultSet(&$results) {
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$this->results =& $results;
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$this->map = array();
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$numFields = mssql_num_fields($results);
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$index = 0;
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$j = 0;
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while ($j < $numFields) {
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$column = mssql_field_name($results, $j);
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if (strpos($column, '__')) {
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if (isset($this->__fieldMappings[$column]) && strpos($this->__fieldMappings[$column], '.')) {
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$map = explode('.', $this->__fieldMappings[$column]);
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} elseif (isset($this->__fieldMappings[$column])) {
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$map = array(0, $this->__fieldMappings[$column]);
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} else {
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$map = array(0, $column);
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}
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$this->map[$index++] = $map;
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} else {
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$this->map[$index++] = array(0, $column);
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}
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$j++;
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}
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}
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/**
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* Builds final SQL statement
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*
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* @param string $type Query type
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* @param array $data Query data
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* @return string
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*/
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function renderStatement($type, $data) {
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switch (strtolower($type)) {
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case 'select':
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extract($data);
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$fields = trim($fields);
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if (strpos($limit, 'TOP') !== false && strpos($fields, 'DISTINCT ') === 0) {
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$limit = 'DISTINCT ' . trim($limit);
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$fields = substr($fields, 9);
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}
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if (preg_match('/offset\s+([0-9]+)/i', $limit, $offset)) {
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$limit = preg_replace('/\s*offset.*$/i', '', $limit);
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preg_match('/top\s+([0-9]+)/i', $limit, $limitVal);
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$offset = intval($offset[1]) + intval($limitVal[1]);
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$rOrder = $this->__switchSort($order);
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list($order2, $rOrder) = array($this->__mapFields($order), $this->__mapFields($rOrder));
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return "SELECT * FROM (SELECT {$limit} * FROM (SELECT TOP {$offset} {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$group} {$order}) AS Set1 {$rOrder}) AS Set2 {$order2}";
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} else {
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return "SELECT {$limit} {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$group} {$order}";
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}
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break;
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case "schema":
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extract($data);
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foreach ($indexes as $i => $index) {
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if (preg_match('/PRIMARY KEY/', $index)) {
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unset($indexes[$i]);
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break;
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}
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}
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foreach (array('columns', 'indexes') as $var) {
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if (is_array(${$var})) {
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${$var} = "\t" . implode(",\n\t", array_filter(${$var}));
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}
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}
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return "CREATE TABLE {$table} (\n{$columns});\n{$indexes}";
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break;
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default:
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return parent::renderStatement($type, $data);
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break;
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}
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}
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/**
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* Reverses the sort direction of ORDER statements to get paging offsets to work correctly
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*
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* @param string $order
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* @return string
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* @access private
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*/
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function __switchSort($order) {
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$order = preg_replace('/\s+ASC/i', '__tmp_asc__', $order);
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$order = preg_replace('/\s+DESC/i', ' ASC', $order);
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return preg_replace('/__tmp_asc__/', ' DESC', $order);
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}
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/**
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* Translates field names used for filtering and sorting to shortened names using the field map
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*
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* @param string $sql A snippet of SQL representing an ORDER or WHERE statement
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* @return string The value of $sql with field names replaced
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* @access private
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*/
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function __mapFields($sql) {
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if (empty($sql) || empty($this->__fieldMappings)) {
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return $sql;
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}
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|
foreach ($this->__fieldMappings as $key => $val) {
|
|
$sql = preg_replace('/' . preg_quote($val) . '/', $this->name($key), $sql);
|
|
$sql = preg_replace('/' . preg_quote($this->name($val)) . '/', $this->name($key), $sql);
|
|
}
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all result rows for a given SQL query.
|
|
* Returns false if no rows matched.
|
|
*
|
|
* @param string $sql SQL statement
|
|
* @param boolean $cache Enables returning/storing cached query results
|
|
* @return array Array of resultset rows, or false if no rows matched
|
|
*/
|
|
function read($model, $queryData = array(), $recursive = null) {
|
|
$results = parent::read($model, $queryData, $recursive);
|
|
$this->__fieldMappings = array();
|
|
return $results;
|
|
}
|
|
|
|
/**
|
|
* Fetches the next row from the current result set
|
|
*
|
|
* @return unknown
|
|
*/
|
|
function fetchResult() {
|
|
if ($row = mssql_fetch_row($this->results)) {
|
|
$resultRow = array();
|
|
$i = 0;
|
|
|
|
foreach ($row as $index => $field) {
|
|
list($table, $column) = $this->map[$index];
|
|
$resultRow[$table][$column] = $row[$index];
|
|
$i++;
|
|
}
|
|
return $resultRow;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Inserts multiple values into a table
|
|
*
|
|
* @param string $table
|
|
* @param string $fields
|
|
* @param array $values
|
|
*/
|
|
public function insertMulti($table, $fields, $values) {
|
|
$primaryKey = $this->_getPrimaryKey($table);
|
|
$hasPrimaryKey = $primaryKey != null && (
|
|
(is_array($fields) && in_array($primaryKey, $fields)
|
|
|| (is_string($fields) && strpos($fields, $this->startQuote . $primaryKey . $this->endQuote) !== false))
|
|
);
|
|
|
|
if ($hasPrimaryKey) {
|
|
$this->_execute('SET IDENTITY_INSERT ' . $this->fullTableName($table) . ' ON');
|
|
}
|
|
parent::insertMulti($table, $fields, $values);
|
|
if ($hasPrimaryKey) {
|
|
$this->_execute('SET IDENTITY_INSERT ' . $this->fullTableName($table) . ' OFF');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate a database-native column schema string
|
|
*
|
|
* @param array $column An array structured like the following: array('name'=>'value', 'type'=>'value'[, options]),
|
|
* where options can be 'default', 'length', or 'key'.
|
|
* @return string
|
|
*/
|
|
function buildColumn($column) {
|
|
$result = preg_replace('/(int|integer)\([0-9]+\)/i', '$1', parent::buildColumn($column));
|
|
if (strpos($result, 'DEFAULT NULL') !== false) {
|
|
$result = str_replace('DEFAULT NULL', 'NULL', $result);
|
|
} else if (array_keys($column) == array('type', 'name')) {
|
|
$result .= ' NULL';
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Format indexes for create table
|
|
*
|
|
* @param array $indexes
|
|
* @param string $table
|
|
* @return string
|
|
*/
|
|
function buildIndex($indexes, $table = null) {
|
|
$join = array();
|
|
|
|
foreach ($indexes as $name => $value) {
|
|
if ($name == 'PRIMARY') {
|
|
$join[] = 'PRIMARY KEY (' . $this->name($value['column']) . ')';
|
|
} else if (isset($value['unique']) && $value['unique']) {
|
|
$out = "ALTER TABLE {$table} ADD CONSTRAINT {$name} UNIQUE";
|
|
|
|
if (is_array($value['column'])) {
|
|
$value['column'] = implode(', ', array_map(array(&$this, 'name'), $value['column']));
|
|
} else {
|
|
$value['column'] = $this->name($value['column']);
|
|
}
|
|
$out .= "({$value['column']});";
|
|
$join[] = $out;
|
|
}
|
|
}
|
|
return $join;
|
|
}
|
|
|
|
/**
|
|
* Makes sure it will return the primary key
|
|
*
|
|
* @param mixed $model
|
|
* @access protected
|
|
* @return string
|
|
*/
|
|
function _getPrimaryKey($model) {
|
|
if (is_object($model)) {
|
|
$schema = $model->schema();
|
|
} else {
|
|
$schema = $this->describe($model);
|
|
}
|
|
|
|
foreach ($schema as $field => $props) {
|
|
if (isset($props['key']) && $props['key'] == 'primary') {
|
|
return $field;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
}
|