538 lines
18 KiB
PHP
538 lines
18 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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/**
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*
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* Doctrine_Manager is the base component of all doctrine based projects.
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* It opens and keeps track of all connections (database connections).
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*
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* @package Doctrine
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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* @version $Revision$
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Manager extends Doctrine_Configurable implements Countable, IteratorAggregate
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{
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/**
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* @var array $connections an array containing all the opened connections
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*/
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protected $_connections = array();
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/**
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* @var array $bound an array containing all components that have a bound connection
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*/
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protected $_bound = array();
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/**
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* @var integer $index the incremented index
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*/
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protected $_index = 0;
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/**
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* @var integer $currIndex the current connection index
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*/
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protected $_currIndex = 0;
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/**
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* @var string $root root directory
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*/
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protected $_root;
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/**
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* @var array $_integrityActions an array containing all registered integrity actions
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* used when emulating these actions
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*/
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protected $_integrityActions = array();
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protected static $driverMap = array('oci' => 'oracle');
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/**
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* constructor
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*
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* this is private constructor (use getInstance to get an instance of this class)
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*/
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private function __construct()
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{
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$this->_root = dirname(__FILE__);
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Doctrine_Object::initNullObject(new Doctrine_Null);
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}
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public function addDeleteAction($componentName, $foreignComponent, $action)
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{
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$this->_integrityActions[$componentName]['onDelete'][$foreignComponent] = $action;
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}
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public function addUpdateAction($componentName, $foreignComponent, $action)
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{
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$this->_integrityActions[$componentName]['onUpdate'][$foreignComponent] = $action;
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}
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public function getDeleteActions($componentName)
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{
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if ( ! isset($this->_integrityActions[$componentName]['onDelete'])) {
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return null;
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}
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return $this->_integrityActions[$componentName]['onDelete'];
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}
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public function getUpdateActions($componentName)
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{
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if ( ! isset($this->_integrityActions[$componentName]['onUpdate'])) {
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return null;
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}
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return $this->_integrityActions[$componentName]['onUpdate'];
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}
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/**
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* setDefaultAttributes
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* sets default attributes
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*
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* @return boolean
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*/
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public function setDefaultAttributes()
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{
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static $init = false;
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if ( ! $init) {
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$init = true;
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$attributes = array(
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Doctrine::ATTR_CACHE => null,
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Doctrine::ATTR_LOAD_REFERENCES => true,
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Doctrine::ATTR_LISTENER => new Doctrine_EventListener(),
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Doctrine::ATTR_LOCKMODE => 1,
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Doctrine::ATTR_VLD => false,
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Doctrine::ATTR_AUTO_LENGTH_VLD => true,
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Doctrine::ATTR_AUTO_TYPE_VLD => true,
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Doctrine::ATTR_QUERY_LIMIT => Doctrine::LIMIT_RECORDS,
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Doctrine::ATTR_IDXNAME_FORMAT => "%s_idx",
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Doctrine::ATTR_SEQNAME_FORMAT => "%s_seq",
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Doctrine::ATTR_QUOTE_IDENTIFIER => false,
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Doctrine::ATTR_SEQCOL_NAME => 'id',
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Doctrine::ATTR_PORTABILITY => Doctrine::PORTABILITY_ALL,
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Doctrine::ATTR_EXPORT => Doctrine::EXPORT_ALL,
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Doctrine::ATTR_DECIMAL_PLACES => 2,
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);
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foreach ($attributes as $attribute => $value) {
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$old = $this->getAttribute($attribute);
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if ($old === null) {
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$this->setAttribute($attribute,$value);
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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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* returns the root directory of Doctrine
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*
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* @return string
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*/
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final public function getRoot()
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{
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return $this->_root;
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}
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/**
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* getInstance
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* returns an instance of this class
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* (this class uses the singleton pattern)
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*
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* @return Doctrine_Manager
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*/
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public static function getInstance()
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{
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static $instance;
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if ( ! isset($instance)) {
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$instance = new self();
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}
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return $instance;
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}
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/**
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* connection
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*
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* if the adapter parameter is set this method acts as
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* a short cut for Doctrine_Manager::getInstance()->openConnection($adapter, $name);
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*
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* if the adapter paramater is not set this method acts as
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* a short cut for Doctrine_Manager::getInstance()->getCurrentConnection()
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*
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* @param PDO|Doctrine_Adapter_Interface $adapter database driver
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* @param string $name name of the connection, if empty numeric key is used
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* @throws Doctrine_Manager_Exception if trying to bind a connection with an existing name
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* @return Doctrine_Connection
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*/
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public static function connection($adapter = null, $name = null)
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{
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if ($adapter == null) {
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return Doctrine_Manager::getInstance()->getCurrentConnection();
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} else {
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return Doctrine_Manager::getInstance()->openConnection($adapter, $name);
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}
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}
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/**
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* openConnection
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* opens a new connection and saves it to Doctrine_Manager->connections
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*
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* @param PDO|Doctrine_Adapter_Interface $adapter database driver
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* @param string $name name of the connection, if empty numeric key is used
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* @throws Doctrine_Manager_Exception if trying to bind a connection with an existing name
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* @throws Doctrine_Manager_Exception if trying to open connection for unknown driver
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* @return Doctrine_Connection
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*/
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public function openConnection($adapter, $name = null, $setCurrent = true)
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{
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if (is_object($adapter)) {
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if ( ! ($adapter instanceof PDO) && ! in_array('Doctrine_Adapter_Interface', class_implements($adapter))) {
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throw new Doctrine_Manager_Exception("First argument should be an instance of PDO or implement Doctrine_Adapter_Interface");
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}
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$driverName = $adapter->getAttribute(Doctrine::ATTR_DRIVER_NAME);
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} elseif (is_array($adapter)) {
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if ( ! isset($adapter[0])) {
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throw new Doctrine_Manager_Exception('Empty data source name given.');
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}
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$e = explode(':', $adapter[0]);
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if($e[0] == 'uri') {
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$e[0] = 'odbc';
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}
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$parts['dsn'] = $adapter[0];
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$parts['scheme'] = $e[0];
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$parts['user'] = (isset($adapter[1])) ? $adapter[1] : null;
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$parts['pass'] = (isset($adapter[2])) ? $adapter[2] : null;
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$driverName = $e[0];
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$adapter = $parts;
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} else {
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$parts = $this->parseDsn($adapter);
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$driverName = $parts['scheme'];
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$adapter = $parts;
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}
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// initialize the default attributes
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$this->setDefaultAttributes();
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if ($name !== null) {
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$name = (string) $name;
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if (isset($this->_connections[$name])) {
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return $this->_connections[$name];
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}
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} else {
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$name = $this->_index;
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$this->_index++;
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}
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$drivers = array('mysql' => 'Doctrine_Connection_Mysql',
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'sqlite' => 'Doctrine_Connection_Sqlite',
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'pgsql' => 'Doctrine_Connection_Pgsql',
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'oci' => 'Doctrine_Connection_Oracle',
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'oci8' => 'Doctrine_Connection_Oracle',
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'oracle' => 'Doctrine_Connection_Oracle',
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'mssql' => 'Doctrine_Connection_Mssql',
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'dblib' => 'Doctrine_Connection_Mssql',
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'firebird' => 'Doctrine_Connection_Firebird',
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'informix' => 'Doctrine_Connection_Informix',
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'mock' => 'Doctrine_Connection_Mock');
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if ( ! isset($drivers[$driverName])) {
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throw new Doctrine_Manager_Exception('Unknown driver ' . $driverName);
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}
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$className = $drivers[$driverName];
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$conn = new $className($this, $adapter);
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$this->_connections[$name] = $conn;
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if ($setCurrent) {
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$this->_currIndex = $name;
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}
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return $this->_connections[$name];
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}
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/**
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* parseDsn
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*
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* @param string $dsn
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* @return array Parsed contents of DSN
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*/
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public function parseDsn($dsn)
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{
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// silence any warnings
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$parts = @parse_url($dsn);
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$names = array('dsn', 'scheme', 'host', 'port', 'user', 'pass', 'path', 'query', 'fragment');
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foreach ($names as $name) {
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if ( ! isset($parts[$name])) {
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$parts[$name] = null;
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}
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}
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if (count($parts) == 0 || ! isset($parts['scheme'])) {
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throw new Doctrine_Manager_Exception('Empty data source name');
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}
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switch ($parts['scheme']) {
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case 'sqlite':
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case 'sqlite2':
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case 'sqlite3':
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if (isset($parts['host']) && $parts['host'] == ':memory') {
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$parts['database'] = ':memory:';
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$parts['dsn'] = 'sqlite::memory:';
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}
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break;
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case 'mysql':
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case 'informix':
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case 'oci8':
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case 'oci':
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case 'mssql':
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case 'firebird':
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case 'dblib':
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case 'pgsql':
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case 'odbc':
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case 'mock':
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case 'oracle':
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if ( ! isset($parts['path']) || $parts['path'] == '/') {
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throw new Doctrine_Manager_Exception('No database available in data source name');
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}
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if (isset($parts['path'])) {
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$parts['database'] = substr($parts['path'], 1);
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}
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if ( ! isset($parts['host'])) {
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throw new Doctrine_Manager_Exception('No hostname set in data source name');
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}
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if (isset(self::$driverMap[$parts['scheme']])) {
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$parts['scheme'] = self::$driverMap[$parts['scheme']];
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}
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$parts['dsn'] = $parts['scheme'] . ':host='
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. $parts['host'] . ';dbname='
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. $parts['database'];
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if (isset($parts['port'])) {
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// append port to dsn if supplied
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$parts['dsn'] .= ';port=' . $parts['port'];
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}
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break;
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default:
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throw new Doctrine_Manager_Exception('Unknown driver '.$parts['scheme']);
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}
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return $parts;
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}
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/**
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* getConnection
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* @param integer $index
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* @return object Doctrine_Connection
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* @throws Doctrine_Manager_Exception if trying to get a non-existent connection
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*/
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public function getConnection($name)
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{
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if ( ! isset($this->_connections[$name])) {
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throw new Doctrine_Manager_Exception('Unknown connection: ' . $name);
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}
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return $this->_connections[$name];
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}
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/**
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* getComponentAlias
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* retrieves the alias for given component name
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* if the alias couldn't be found, this method returns the given
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* component name
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*
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* @param string $componentName
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* @return string the component alias
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*/
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public function getComponentAlias($componentName)
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{
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if (isset($this->componentAliases[$componentName])) {
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return $this->componentAliases[$componentName];
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}
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return $componentName;
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}
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/**
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* sets an alias for given component name
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* very useful when building a large framework with a possibility
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* to override any given class
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*
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* @param string $componentName the name of the component
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* @param string $alias
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* @return Doctrine_Manager
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*/
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public function setComponentAlias($componentName, $alias)
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{
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$this->componentAliases[$componentName] = $alias;
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return $this;
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}
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/**
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* getConnectionName
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*
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* @param Doctrine_Connection $conn connection object to be searched for
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* @return string the name of the connection
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*/
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public function getConnectionName(Doctrine_Connection $conn)
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{
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return array_search($conn, $this->_connections, true);
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}
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/**
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* bindComponent
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* binds given component to given connection
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* this means that when ever the given component uses a connection
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* it will be using the bound connection instead of the current connection
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*
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* @param string $componentName
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* @param string $connectionName
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* @return boolean
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*/
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public function bindComponent($componentName, $connectionName)
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{
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$this->_bound[$componentName] = $connectionName;
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}
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/**
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* getConnectionForComponent
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*
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* @param string $componentName
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* @return Doctrine_Connection
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*/
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public function getConnectionForComponent($componentName = null)
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{
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if (isset($this->_bound[$componentName])) {
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return $this->getConnection($this->_bound[$componentName]);
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}
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return $this->getCurrentConnection();
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}
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/**
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* getTable
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* this is the same as Doctrine_Connection::getTable() except
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* that it works seamlessly in multi-server/connection environment
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*
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* @see Doctrine_Connection::getTable()
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* @param string $componentName
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* @return Doctrine_Table
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*/
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public function getTable($componentName)
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{
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return $this->getConnectionForComponent($componentName)->getTable($componentName);
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}
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/**
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* closes the connection
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*
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* @param Doctrine_Connection $connection
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* @return void
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*/
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public function closeConnection(Doctrine_Connection $connection)
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{
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$connection->close();
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$key = array_search($connection, $this->_connections, true);
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if ($key !== false) {
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unset($this->_connections[$key]);
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}
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$this->_currIndex = key($this->_connections);
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unset($connection);
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}
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/**
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* getConnections
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* returns all opened connections
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*
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* @return array
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*/
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public function getConnections()
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{
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return $this->_connections;
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}
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/**
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* setCurrentConnection
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* sets the current connection to $key
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*
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* @param mixed $key the connection key
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* @throws InvalidKeyException
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* @return void
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*/
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public function setCurrentConnection($key)
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{
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$key = (string) $key;
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if ( ! isset($this->_connections[$key])) {
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throw new InvalidKeyException();
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}
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$this->_currIndex = $key;
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}
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/**
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* contains
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* whether or not the manager contains specified connection
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*
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* @param mixed $key the connection key
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* @return boolean
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*/
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public function contains($key)
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{
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return isset($this->_connections[$key]);
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}
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/**
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* count
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* returns the number of opened connections
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*
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* @return integer
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*/
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public function count()
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{
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return count($this->_connections);
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}
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/**
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* getIterator
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* returns an ArrayIterator that iterates through all connections
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*
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* @return ArrayIterator
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*/
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public function getIterator()
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{
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return new ArrayIterator($this->_connections);
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}
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/**
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* getCurrentConnection
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* returns the current connection
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*
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* @throws Doctrine_Connection_Exception if there are no open connections
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* @return Doctrine_Connection
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*/
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public function getCurrentConnection()
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{
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$i = $this->_currIndex;
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if ( ! isset($this->_connections[$i])) {
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throw new Doctrine_Connection_Exception();
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}
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return $this->_connections[$i];
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}
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/**
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* __toString
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* returns a string representation of this object
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*
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* @return string
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*/
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public function __toString()
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{
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$r[] = "<pre>";
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$r[] = "Doctrine_Manager";
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$r[] = "Connections : ".count($this->_connections);
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$r[] = "</pre>";
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return implode("\n",$r);
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}
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}
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