811 lines
28 KiB
PHP
811 lines
28 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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* Doctrine_Connection
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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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* @author Lukas Smith <smith@pooteeweet.org> (MDB2 library)
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*/
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abstract class Doctrine_Connection extends Doctrine_Configurable implements Countable, IteratorAggregate {
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/**
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* @var $dbh the database handler
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*/
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private $dbh;
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/**
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* @var array $tables an array containing all the initialized Doctrine_Table objects
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* keys representing Doctrine_Table component names and values as Doctrine_Table objects
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*/
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protected $tables = array();
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/**
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* @var string $driverName the name of this connection driver
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*/
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protected $driverName;
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/**
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* @var array $supported an array containing all features this driver supports,
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* keys representing feature names and values as
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* one of the following (true, false, 'emulated')
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*/
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protected $supported = array();
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/**
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* @var array $modules an array containing all modules
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* transaction Doctrine_Transaction driver, handles savepoint and transaction isolation abstraction
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*
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* expression Doctrine_Expression driver, handles expression abstraction
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*
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* dataDict Doctrine_DataDict driver, handles datatype abstraction
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*
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* export Doctrine_Export driver, handles db structure modification abstraction (contains
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* methods such as alterTable, createConstraint etc.)
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*
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* @see Doctrine_Connection::__get()
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* @see Doctrine_DataDict
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* @see Doctrine_Expression
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* @see Doctrine_Export
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* @see Doctrine_Transaction
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*/
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private $modules = array('transaction' => false,
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'expression' => false,
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'dataDict' => false,
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'export' => false,
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'unitOfWork' => false,
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);
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/**
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* @var array $properties an array of connection properties
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*/
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protected $properties = array();
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/**
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* @var array $availibleDrivers an array containing all availible drivers
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*/
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private static $availibleDrivers = array(
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'Mysql',
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'Pgsql',
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'Oracle',
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'Informix',
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'Mssql',
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'Sqlite',
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'Firebird'
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);
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/**
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* the constructor
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*
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* @param Doctrine_Manager $manager the manager object
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* @param PDO|Doctrine_Adapter_Interface $adapter database driver
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*/
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public function __construct(Doctrine_Manager $manager, $adapter) {
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if( ! ($adapter instanceof PDO) && ! in_array('Doctrine_Adapter_Interface', class_implements($adapter)))
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throw new Doctrine_Connection_Exception("First argument should be an instance of PDO or implement Doctrine_Adapter_Interface");
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$this->dbh = $adapter;
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$this->modules['transaction'] = new Doctrine_Connection_Transaction($this);
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$this->modules['unitOfWork'] = new Doctrine_Connection_UnitOfWork($this);
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$this->setParent($manager);
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$this->dbh->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
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$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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$this->getAttribute(Doctrine::ATTR_LISTENER)->onOpen($this);
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}
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/**
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* getName
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* returns the name of this driver
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*
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* @return string the name of this driver
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*/
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public function getName() {
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return $this->driverName;
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}
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/**
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* __get
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* lazy loads given module and returns it
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*
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* @see Doctrine_DataDict
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* @see Doctrine_Expression
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* @see Doctrine_Export
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* @see Doctrine_Transaction
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* @see Doctrine_Connection::$modules all availible modules
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* @param string $name the name of the module to get
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* @throws Doctrine_Connection_Exception if trying to get an unknown module
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* @return Doctrine_Connection_Module connection module
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*/
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public function __get($name) {
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if( ! isset($this->modules[$name]))
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throw new Doctrine_Connection_Exception('Unknown module ' . $name);
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if($this->modules[$name] === false) {
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switch($name) {
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case 'unitOfWork':
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$this->modules[$name] = new Doctrine_Connection_UnitOfWork($this);
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break;
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default:
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$class = 'Doctrine_' . ucwords($name) . '_' . $this->getName();
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$this->modules[$name] = new $class($this);
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}
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}
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if(isset($this->properties[$name]))
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return $this->properties[$name];
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return $this->modules[$name];
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}
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/**
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* Quotes pattern (% and _) characters in a string)
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*
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* EXPERIMENTAL
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*
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* WARNING: this function is experimental and may change signature at
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* any time until labelled as non-experimental
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*
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* @param string the input string to quote
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*
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* @return string quoted string
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*/
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public function escapePattern($text) {
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if ($this->string_quoting['escape_pattern']) {
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$text = str_replace($this->string_quoting['escape_pattern'], $this->string_quoting['escape_pattern'] . $this->string_quoting['escape_pattern'], $text);
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foreach ($this->wildcards as $wildcard) {
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$text = str_replace($wildcard, $this->string_quoting['escape_pattern'] . $wildcard, $text);
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}
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}
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return $text;
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}
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/**
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* Quote a string so it can be safely used as a table or column name
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*
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* Delimiting style depends on which database driver is being used.
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*
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* NOTE: just because you CAN use delimited identifiers doesn't mean
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* you SHOULD use them. In general, they end up causing way more
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* problems than they solve.
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*
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* Portability is broken by using the following characters inside
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* delimited identifiers:
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* + backtick (<kbd>`</kbd>) -- due to MySQL
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* + double quote (<kbd>"</kbd>) -- due to Oracle
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* + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
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*
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* Delimited identifiers are known to generally work correctly under
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* the following drivers:
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* + mssql
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* + mysql
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* + mysqli
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* + oci8
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* + pgsql
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* + sqlite
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*
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* InterBase doesn't seem to be able to use delimited identifiers
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* via PHP 4. They work fine under PHP 5.
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*
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* @param string $str identifier name to be quoted
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* @param bool $checkOption check the 'quote_identifier' option
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*
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* @return string quoted identifier string
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*/
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public function quoteIdentifier($str, $checkOption = true) {
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if ($checkOption && ! $this->getAttribute(Doctrine::ATTR_QUOTE_IDENTIFIER)) {
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return $str;
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}
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$str = str_replace($this->properties['identifier_quoting']['end'],
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$this->properties['identifier_quoting']['escape'] .
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$this->properties['identifier_quoting']['end'], $str);
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return $this->properties['identifier_quoting']['start']
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. $str . $this->properties['identifier_quoting']['end'];
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}
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/**
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* returns the manager that created this connection
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*
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* @return Doctrine_Manager
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*/
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public function getManager() {
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return $this->getParent();
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}
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/**
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* returns the database handler of which this connection uses
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*
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* @return PDO the database handler
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*/
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public function getDbh() {
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return $this->dbh;
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}
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/**
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* converts given driver name
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*
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* @param
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*/
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public function driverName($name) {
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}
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/**
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* supports
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*
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* @param string $feature the name of the feature
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* @return boolean whether or not this drivers supports given feature
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*/
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public function supports($feature) {
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return (isset($this->supported[$feature]) &&
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$this->supported[$feature] === 'emulated' ||
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$this->supported[$feature]);
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}
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/**
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* Removes any formatting in an sequence name using the 'seqname_format' option
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*
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* @param string $sqn string that containts name of a potential sequence
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* @return string name of the sequence with possible formatting removed
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*/
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public function fixSequenceName($sqn) {
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$seqPattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $this->getAttribute(Doctrine::ATTR_SEQNAME_FORMAT)).'$/i';
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$seqName = preg_replace($seqPattern, '\\1', $sqn);
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if ($seqName && ! strcasecmp($sqn, $db->getSequenceName($seqName))) {
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return $seqName;
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}
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return $sqn;
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}
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/**
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* Removes any formatting in an index name using the 'idxname_format' option
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*
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* @param string $idx string that containts name of anl index
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* @return string name of the index with possible formatting removed
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*/
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public function fixIndexName($idx) {
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$indexPattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $this->getAttribute(Doctrine::ATTR_IDXNAME_FORMAT)).'$/i';
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$indexName = preg_replace($indexPattern, '\\1', $idx);
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if ($indexName && ! strcasecmp($idx, $this->getIndexName($indexName))) {
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return $indexName;
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}
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return $idx;
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}
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/**
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* adds sequence name formatting to a sequence name
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*
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* @param string name of the sequence
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* @return string formatted sequence name
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*/
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public function getSequenceName($sqn) {
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return sprintf($this->getAttribute(Doctrine::ATTR_SEQNAME_FORMAT),
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preg_replace('/[^a-z0-9_\$.]/i', '_', $sqn));
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}
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/**
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* adds index name formatting to a index name
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*
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* @param string name of the index
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* @return string formatted index name
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*/
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public function getIndexName($idx) {
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return sprintf($this->getAttribute(Doctrine::ATTR_IDXNAME_FORMAT),
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preg_replace('/[^a-z0-9_\$]/i', '_', $idx));
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}
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/**
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* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
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* query, except that if there is already a row in the table with the same
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* key field values, the REPLACE query just updates its values instead of
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* inserting a new row.
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*
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* The REPLACE type of query does not make part of the SQL standards. Since
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* practically only MySQL and SQLIte implement it natively, this type of
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* query isemulated through this method for other DBMS using standard types
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* of queries inside a transaction to assure the atomicity of the operation.
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*
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* @param string name of the table on which the REPLACE query will
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* be executed.
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*
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* @param array an associative array that describes the fields and the
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* values that will be inserted or updated in the specified table. The
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* indexes of the array are the names of all the fields of the table.
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*
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* The values of the array are values to be assigned to the specified field.
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*
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* @param array $keys an array containing all key fields (primary key fields
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* or unique index fields) for this table
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*
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* the uniqueness of a row will be determined according to
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* the provided key fields
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*
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* this method will fail if no key fields are specified
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*
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* @throws Doctrine_Connection_Exception if this driver doesn't support replace
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* @throws Doctrine_Connection_Exception if some of the key values was null
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* @throws Doctrine_Connection_Exception if there were no key fields
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* @throws PDOException if something fails at PDO level
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* @return void
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*/
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public function replace($table, array $fields, array $keys) {
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if( ! $this->supports('replace'))
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throw new Doctrine_Connection_Exception('replace query is not supported');
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if(empty($keys))
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throw new Doctrine_Connection_Exception('Not specified which fields are keys');
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$condition = $values = array();
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foreach($fields as $name => $value) {
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$values[$name] = $value;
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if(in_array($name, $keys)) {
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if($value === null)
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throw new Doctrine_Connection_Exception('key value '.$name.' may not be null');
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$condition[] = $name . ' = ?';
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$conditionValues[] = $value;
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}
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}
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$query = 'DELETE FROM '. $table . ' WHERE ' . implode(' AND ', $condition);
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$affectedRows = $this->dbh->exec($query);
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$this->insert($table, $values);
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$affectedRows++;
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return $affectedRows;
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}
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/**
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* Inserts a table row with specified data.
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*
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* @param string $table The table to insert data into.
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* @param array $values An associateve array containing column-value pairs.
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* @return boolean
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*/
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public function insert($table, array $values = array()) {
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if(empty($values))
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return false;
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// column names are specified as array keys
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$cols = array_keys($values);
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// build the statement
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$query = "INSERT INTO $table "
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. '(' . implode(', ', $cols) . ') '
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. 'VALUES (' . substr(str_repeat('?, ', count($values)), 0, -2) . ')';
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// prepare and execute the statement
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$stmt = $this->dbh->prepare($query);
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$stmt->execute(array_values($values));
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return true;
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}
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/**
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* returns the next value in the given sequence
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*
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* @param string $sequence
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* @throws PDOException if something went wrong at database level
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* @return integer
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*/
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public function nextId($sequence) {
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throw new Doctrine_Connection_Exception('NextId() for sequences not supported by this driver.');
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}
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/**
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* Set the charset on the current connection
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*
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* @param string charset
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* @param resource connection handle
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*
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* @throws Doctrine_Connection_Exception if the feature is not supported by the driver
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* @return true on success, MDB2 Error Object on failure
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*/
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public function setCharset($charset) {
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throw new Doctrine_Connection_Exception('Altering charset not supported by this driver.');
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}
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/**
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* fetchAll
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchAll($statement, array $params = array()) {
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return $this->query($statement, $params)->fetchAll(PDO::FETCH_ASSOC);
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}
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/**
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* fetchOne
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return mixed
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*/
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public function fetchOne($statement, array $params = array()) {
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return current($this->execute($statement, $params)->fetch(PDO::FETCH_NUM));
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}
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/**
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* fetchRow
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchRow($statement, array $params = array()) {
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return $this->query($statement, $params)->fetch(PDO::FETCH_ASSOC);
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}
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/**
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* fetchArray
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchArray($statement, array $params = array()) {
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return $this->query($statement, $params)->fetch(PDO::FETCH_NUM);
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}
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/**
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* fetchColumn
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchColumn($statement, array $params = array()) {
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$result = $this->query($statement, $params)->fetchAll(PDO::FETCH_COLUMN);
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if($this->options['portability'] & Doctrine::PORTABILITY_FIX_CASE)
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$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
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return $result;
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}
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|
/**
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* fetchAssoc
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|
*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchAssoc($statement, array $params = array()) {
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return $this->query($statement, $params)->fetchAll(PDO::FETCH_ASSOC);
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}
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|
/**
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* fetchBoth
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*
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* @param string $statement sql query to be executed
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* @param array $params prepared statement params
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* @return array
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*/
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public function fetchBoth($statement, array $params = array()) {
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return $this->query($statement, $params)->fetchAll(PDO::FETCH_BOTH);
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}
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/**
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* query
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* queries the database using Doctrine Query Language
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* returns a collection of Doctrine_Record objects
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*
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* <code>
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* $users = $conn->query('SELECT u.* FROM User u');
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*
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* $users = $conn->query('SELECT u.* FROM User u WHERE u.name LIKE ?', array('someone'));
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* </code>
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*
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|
* @param string $query DQL query
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* @param array $params query parameters
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* @see Doctrine_Query
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* @return Doctrine_Collection Collection of Doctrine_Record objects
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*/
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|
public function query($query, array $params = array()) {
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$parser = new Doctrine_Query($this);
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return $parser->query($query, $params);
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}
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|
/**
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|
* query
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|
* queries the database using Doctrine Query Language and returns
|
|
* the first record found
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|
*
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|
* <code>
|
|
* $user = $conn->queryOne('SELECT u.* FROM User u WHERE u.id = ?', array(1));
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|
*
|
|
* $user = $conn->queryOne('SELECT u.* FROM User u WHERE u.name LIKE ? AND u.password = ?',
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|
* array('someone', 'password')
|
|
* );
|
|
* </code>
|
|
*
|
|
* @param string $query DQL query
|
|
* @param array $params query parameters
|
|
* @see Doctrine_Query
|
|
* @return Doctrine_Record|false Doctrine_Record object on success,
|
|
* boolean false on failure
|
|
*/
|
|
public function queryOne($query, array $params = array()) {
|
|
$parser = new Doctrine_Query($this);
|
|
|
|
$coll = $parser->query($query, $params);
|
|
if( ! $coll->contains(0))
|
|
return false;
|
|
|
|
return $coll[0];
|
|
}
|
|
/**
|
|
* queries the database with limit and offset
|
|
* added to the query and returns a PDOStatement object
|
|
*
|
|
* @param string $query
|
|
* @param integer $limit
|
|
* @param integer $offset
|
|
* @return PDOStatement
|
|
*/
|
|
public function select($query,$limit = 0,$offset = 0) {
|
|
if($limit > 0 || $offset > 0)
|
|
$query = $this->modifyLimitQuery($query, $limit, $offset);
|
|
|
|
return $this->dbh->query($query);
|
|
}
|
|
/**
|
|
* @param string $query sql query
|
|
* @param array $params query parameters
|
|
*
|
|
* @return PDOStatement
|
|
*/
|
|
public function execute($query, array $params = array()) {
|
|
if( ! empty($params)) {
|
|
$stmt = $this->dbh->prepare($query);
|
|
$stmt->execute($params);
|
|
return $stmt;
|
|
} else {
|
|
return $this->dbh->query($query);
|
|
}
|
|
}
|
|
/**
|
|
* hasTable
|
|
* whether or not this connection has table $name initialized
|
|
*
|
|
* @param mixed $name
|
|
* @return boolean
|
|
*/
|
|
public function hasTable($name) {
|
|
return isset($this->tables[$name]);
|
|
}
|
|
/**
|
|
* returns a table object for given component name
|
|
*
|
|
* @param string $name component name
|
|
* @return object Doctrine_Table
|
|
*/
|
|
public function getTable($name) {
|
|
if(isset($this->tables[$name]))
|
|
return $this->tables[$name];
|
|
|
|
$class = $name."Table";
|
|
|
|
if(class_exists($class) && in_array("Doctrine_Table", class_parents($class))) {
|
|
return new $class($name, $this);
|
|
} else {
|
|
|
|
return new Doctrine_Table($name, $this);
|
|
}
|
|
}
|
|
/**
|
|
* returns an array of all initialized tables
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getTables() {
|
|
return $this->tables;
|
|
}
|
|
/**
|
|
* returns an iterator that iterators through all
|
|
* initialized table objects
|
|
*
|
|
* <code>
|
|
* foreach($conn as $index => $table) {
|
|
* print $table; // get a string representation of each table object
|
|
* }
|
|
* </code>
|
|
*
|
|
* @return ArrayIterator
|
|
*/
|
|
public function getIterator() {
|
|
return new ArrayIterator($this->tables);
|
|
}
|
|
/**
|
|
* returns the count of initialized table objects
|
|
*
|
|
* @return integer
|
|
*/
|
|
public function count() {
|
|
return count($this->tables);
|
|
}
|
|
/**
|
|
* addTable
|
|
* adds a Doctrine_Table object into connection registry
|
|
*
|
|
* @param $objTable a Doctrine_Table object to be added into registry
|
|
* @return boolean
|
|
*/
|
|
public function addTable(Doctrine_Table $objTable) {
|
|
$name = $objTable->getComponentName();
|
|
|
|
if(isset($this->tables[$name]))
|
|
return false;
|
|
|
|
$this->tables[$name] = $objTable;
|
|
return true;
|
|
}
|
|
/**
|
|
* create
|
|
* creates a record
|
|
*
|
|
* create creates a record
|
|
* @param string $name component name
|
|
* @return Doctrine_Record Doctrine_Record object
|
|
*/
|
|
public function create($name) {
|
|
return $this->getTable($name)->create();
|
|
}
|
|
/**
|
|
* flush
|
|
* saves all the records from all tables
|
|
* this operation is isolated using a transaction
|
|
*
|
|
* @throws PDOException if something went wrong at database level
|
|
* @return void
|
|
*/
|
|
public function flush() {
|
|
$this->beginTransaction();
|
|
$this->unitOfWork->saveAll();
|
|
$this->commit();
|
|
}
|
|
/**
|
|
* clear
|
|
* clears all repositories
|
|
*
|
|
* @return void
|
|
*/
|
|
public function clear() {
|
|
foreach($this->tables as $k => $table) {
|
|
$table->getRepository()->evictAll();
|
|
$table->clear();
|
|
}
|
|
}
|
|
/**
|
|
* evictTables
|
|
* evicts all tables
|
|
*
|
|
* @return void
|
|
*/
|
|
public function evictTables() {
|
|
$this->tables = array();
|
|
}
|
|
/**
|
|
* close
|
|
* closes the connection
|
|
*
|
|
* @return void
|
|
*/
|
|
public function close() {
|
|
$this->getAttribute(Doctrine::ATTR_LISTENER)->onPreClose($this);
|
|
|
|
$this->clear();
|
|
|
|
$this->getAttribute(Doctrine::ATTR_LISTENER)->onClose($this);
|
|
}
|
|
/**
|
|
* get the current transaction nesting level
|
|
*
|
|
* @return integer
|
|
*/
|
|
public function getTransactionLevel() {
|
|
return $this->transaction->getTransactionLevel();
|
|
}
|
|
/**
|
|
* beginTransaction
|
|
* starts a new transaction
|
|
*
|
|
* this method can be listened by onPreBeginTransaction and onBeginTransaction
|
|
* listener methods
|
|
*
|
|
* @return void
|
|
*/
|
|
public function beginTransaction() {
|
|
$this->transaction->beginTransaction();
|
|
}
|
|
/**
|
|
* commits the current transaction
|
|
* if lockmode is optimistic this method starts a transaction
|
|
* and commits it instantly
|
|
*
|
|
* @return void
|
|
*/
|
|
public function commit() {
|
|
$this->transaction->commit();
|
|
}
|
|
/**
|
|
* rollback
|
|
* rolls back all transactions
|
|
*
|
|
* this method also listens to onPreTransactionRollback and onTransactionRollback
|
|
* eventlisteners
|
|
*
|
|
* @return void
|
|
*/
|
|
public function rollback() {
|
|
$this->transaction->rollback();
|
|
}
|
|
/**
|
|
* saves the given record
|
|
*
|
|
* @param Doctrine_Record $record
|
|
* @return void
|
|
*/
|
|
public function save(Doctrine_Record $record) {
|
|
$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onPreSave($record);
|
|
|
|
|
|
switch($record->getState()):
|
|
case Doctrine_Record::STATE_TDIRTY:
|
|
$this->transaction->insert($record);
|
|
break;
|
|
case Doctrine_Record::STATE_DIRTY:
|
|
case Doctrine_Record::STATE_PROXY:
|
|
$this->transaction->update($record);
|
|
break;
|
|
case Doctrine_Record::STATE_CLEAN:
|
|
case Doctrine_Record::STATE_TCLEAN:
|
|
// do nothing
|
|
break;
|
|
endswitch;
|
|
|
|
$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onSave($record);
|
|
}
|
|
/**
|
|
* deletes this data access object and all the related composites
|
|
* this operation is isolated by a transaction
|
|
*
|
|
* this event can be listened by the onPreDelete and onDelete listeners
|
|
*
|
|
* @return boolean true on success, false on failure
|
|
*/
|
|
public function delete(Doctrine_Record $record) {
|
|
if( ! $record->exists())
|
|
return false;
|
|
|
|
$this->beginTransaction();
|
|
|
|
$record->getTable()->getListener()->onPreDelete($record);
|
|
|
|
$this->unitOfWork->deleteComposites($record);
|
|
|
|
$this->transaction->addDelete($record);
|
|
|
|
$record->getTable()->getListener()->onDelete($record);
|
|
|
|
$this->commit();
|
|
|
|
return true;
|
|
}
|
|
/**
|
|
* returns a string representation of this object
|
|
* @return string
|
|
*/
|
|
public function __toString() {
|
|
return Doctrine_Lib::getConnectionAsString($this);
|
|
}
|
|
}
|
|
|