449 lines
15 KiB
PHP
449 lines
15 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_Transaction
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*
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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*/
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class Doctrine_Connection_Transaction implements Countable, IteratorAggregate {
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/**
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* Doctrine_Connection_Transaction is in open state when it is opened and there are no active transactions
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*/
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const STATE_OPEN = 0;
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/**
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* Doctrine_Connection_Transaction is in closed state when it is closed
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*/
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const STATE_CLOSED = 1;
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/**
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* Doctrine_Connection_Transaction is in active state when it has one active transaction
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*/
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const STATE_ACTIVE = 2;
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/**
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* Doctrine_Connection_Transaction is in busy state when it has multiple active transactions
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*/
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const STATE_BUSY = 3;
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/**
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* @var Doctrine_Connection $conn the connection object
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*/
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private $connection;
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/**
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* @see Doctrine_Connection_Transaction::STATE_* constants
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* @var boolean $state the current state of the connection
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*/
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private $state = 0;
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/**
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* @var integer $transaction_level the nesting level of transactions, used by transaction methods
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*/
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private $transaction_level = 0;
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/**
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* @var Doctrine_Validator $validator transaction validator
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*/
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private $validator;
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/**
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* @var array $update two dimensional pending update list, the records in
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* this list will be updated when transaction is committed
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*/
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protected $update = array();
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/**
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* @var array $insert two dimensional pending insert list, the records in
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* this list will be inserted when transaction is committed
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*/
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protected $insert = array();
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/**
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* @var array $delete two dimensional pending delete list, the records in
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* this list will be deleted when transaction is committed
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*/
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protected $delete = array();
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/**
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* the constructor
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*
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* @param Doctrine_Connection $conn
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*/
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public function __construct(Doctrine_Connection $conn) {
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$this->conn = $conn;
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$this->state = Doctrine_Connection_Transaction::STATE_OPEN;
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}
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/**
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* returns the state of this connection
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*
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* @see Doctrine_Connection_Transaction::STATE_* constants
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* @return integer the connection state
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*/
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public function getState() {
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return $this->state;
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}
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/**
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* get the current transaction nesting level
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*
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* @return integer
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*/
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public function getTransactionLevel() {
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return $this->transaction_level;
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}
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/**
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* beginTransaction
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* starts a new transaction
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* if the lockmode is long this starts db level transaction
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*
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* @return void
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*/
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public function beginTransaction() {
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if($this->transaction_level == 0) {
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if($this->conn->getAttribute(Doctrine::ATTR_LOCKMODE) == Doctrine::LOCK_PESSIMISTIC) {
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onPreTransactionBegin($this->conn);
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$this->conn->getDBH()->beginTransaction();
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onTransactionBegin($this->conn);
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}
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$this->state = Doctrine_Connection_Transaction::STATE_ACTIVE;
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} else {
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$this->state = Doctrine_Connection_Transaction::STATE_BUSY;
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}
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$this->transaction_level++;
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}
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/**
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* commits the current transaction
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* if lockmode is short this method starts a transaction
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* and commits it instantly
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*
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* @return void
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*/
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public function commit() {
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$this->transaction_level--;
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if($this->transaction_level == 0) {
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if($this->conn->getAttribute(Doctrine::ATTR_LOCKMODE) == Doctrine::LOCK_OPTIMISTIC) {
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onPreTransactionBegin($this->conn);
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$this->conn->getDBH()->beginTransaction();
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$this->getAttribute(Doctrine::ATTR_LISTENER)->onTransactionBegin($this->conn);
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}
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if($this->conn->getAttribute(Doctrine::ATTR_VLD))
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$this->validator = new Doctrine_Validator();
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try {
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$this->bulkInsert();
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$this->bulkUpdate();
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$this->bulkDelete();
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if($this->conn->getAttribute(Doctrine::ATTR_VLD)) {
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if($this->validator->hasErrors()) {
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$this->rollback();
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throw new Doctrine_Validator_Exception($this->validator);
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}
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}
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$this->conn->getDBH()->commit();
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} catch(PDOException $e) {
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$this->rollback();
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throw new Doctrine_Exception($e->__toString());
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}
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onTransactionCommit($this->conn);
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$this->delete = array();
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$this->state = Doctrine_Connection_Transaction::STATE_OPEN;
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$this->validator = null;
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} elseif($this->transaction_level == 1)
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$this->state = Doctrine_Connection_Transaction::STATE_ACTIVE;
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}
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/**
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* rollback
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* rolls back all transactions
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*
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* this method also listens to onPreTransactionRollback and onTransactionRollback
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* eventlisteners
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*
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* @return void
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*/
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public function rollback() {
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onPreTransactionRollback($this->conn);
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$this->transaction_level = 0;
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$this->conn->getDBH()->rollback();
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$this->state = Doctrine_Connection_Transaction::STATE_OPEN;
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$this->conn->getAttribute(Doctrine::ATTR_LISTENER)->onTransactionRollback($this->conn);
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}
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/**
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* bulkInsert
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* inserts all the objects in the pending insert list into database
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*
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* @return void
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*/
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public function bulkInsert() {
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if(empty($this->insert))
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return false;
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foreach($this->insert as $name => $inserts) {
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if( ! isset($inserts[0]))
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continue;
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$record = $inserts[0];
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$table = $record->getTable();
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$seq = $table->getSequenceName();
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$increment = false;
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$keys = $table->getPrimaryKeys();
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$id = null;
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if(count($keys) == 1 && $keys[0] == $table->getIdentifier()) {
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$increment = true;
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}
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foreach($inserts as $k => $record) {
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$table->getAttribute(Doctrine::ATTR_LISTENER)->onPreSave($record);
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// listen the onPreInsert event
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$table->getAttribute(Doctrine::ATTR_LISTENER)->onPreInsert($record);
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$this->insert($record);
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if($increment) {
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if($k == 0) {
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// record uses auto_increment column
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$id = $this->conn->getDBH()->lastInsertID();
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if( ! $id)
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$id = $table->getMaxIdentifier();
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}
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$record->assignIdentifier($id);
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$id++;
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} else
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$record->assignIdentifier(true);
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// listen the onInsert event
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$table->getAttribute(Doctrine::ATTR_LISTENER)->onInsert($record);
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$table->getAttribute(Doctrine::ATTR_LISTENER)->onSave($record);
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}
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}
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$this->insert = array();
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return true;
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}
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/**
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* bulkUpdate
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* updates all objects in the pending update list
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*
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* @return void
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*/
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public function bulkUpdate() {
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foreach($this->update as $name => $updates) {
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$ids = array();
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foreach($updates as $k => $record) {
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$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onPreSave($record);
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// listen the onPreUpdate event
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$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onPreUpdate($record);
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$this->update($record);
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// listen the onUpdate event
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$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onUpdate($record);
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$record->getTable()->getAttribute(Doctrine::ATTR_LISTENER)->onSave($record);
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}
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}
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$this->update = array();
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}
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/**
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* bulkDelete
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* deletes all records from the pending delete list
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*
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* @return void
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*/
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public function bulkDelete() {
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foreach($this->delete as $name => $deletes) {
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$record = false;
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$ids = array();
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foreach($deletes as $k => $record) {
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$ids[] = $record->getIncremented();
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$record->assignIdentifier(false);
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}
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if($record instanceof Doctrine_Record) {
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$table = $record->getTable();
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$params = substr(str_repeat("?, ",count($ids)),0,-2);
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$query = "DELETE FROM ".$record->getTable()->getTableName()." WHERE ".$table->getIdentifier()." IN(".$params.")";
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$this->conn->execute($query,$ids);
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}
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}
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$this->delete = array();
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}
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/**
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* updates the given record
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*
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* @param Doctrine_Record $record
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* @return boolean
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*/
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public function update(Doctrine_Record $record) {
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$array = $record->getPrepared();
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if(empty($array))
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return false;
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$set = array();
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foreach($array as $name => $value):
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$set[] = $name." = ?";
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if($value instanceof Doctrine_Record) {
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switch($value->getState()):
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case Doctrine_Record::STATE_TCLEAN:
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case Doctrine_Record::STATE_TDIRTY:
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$record->save();
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default:
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$array[$name] = $value->getIncremented();
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$record->set($name, $value->getIncremented());
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endswitch;
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}
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endforeach;
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if(isset($this->validator)) {
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if( ! $this->validator->validateRecord($record)) {
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return false;
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}
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}
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$params = array_values($array);
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$id = $record->obtainIdentifier();
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if( ! is_array($id))
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$id = array($id);
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$id = array_values($id);
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$params = array_merge($params, $id);
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$sql = "UPDATE ".$record->getTable()->getTableName()." SET ".implode(", ",$set)." WHERE ".implode(" = ? AND ",$record->getTable()->getPrimaryKeys())." = ?";
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$stmt = $this->conn->getDBH()->prepare($sql);
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$stmt->execute($params);
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$record->assignIdentifier(true);
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return true;
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}
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/**
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* inserts a record into database
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*
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* @param Doctrine_Record $record
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* @return boolean
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*/
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public function insert(Doctrine_Record $record) {
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$array = $record->getPrepared();
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if(empty($array))
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return false;
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$seq = $record->getTable()->getSequenceName();
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if( ! empty($seq)) {
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$id = $this->getNextID($seq);
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$name = $record->getTable()->getIdentifier();
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$array[$name] = $id;
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}
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if(isset($this->validator)) {
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if( ! $this->validator->validateRecord($record)) {
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return false;
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}
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}
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$strfields = join(", ", array_keys($array));
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$strvalues = substr(str_repeat("?, ",count($array)),0,-2);
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$sql = "INSERT INTO ".$record->getTable()->getTableName()." (".$strfields.") VALUES (".$strvalues.")";
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$stmt = $this->conn->getDBH()->prepare($sql);
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$stmt->execute(array_values($array));
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return true;
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}
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/**
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* adds record into pending insert list
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* @param Doctrine_Record $record
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*/
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public function addInsert(Doctrine_Record $record) {
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$name = $record->getTable()->getComponentName();
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$this->insert[$name][] = $record;
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}
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/**
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* adds record into penging update list
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* @param Doctrine_Record $record
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*/
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public function addUpdate(Doctrine_Record $record) {
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$name = $record->getTable()->getComponentName();
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$this->update[$name][] = $record;
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}
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/**
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* adds record into pending delete list
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* @param Doctrine_Record $record
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*/
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public function addDelete(Doctrine_Record $record) {
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$name = $record->getTable()->getComponentName();
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$this->delete[$name][] = $record;
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}
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/**
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* returns the pending insert list
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*
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* @return array
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*/
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public function getInserts() {
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return $this->insert;
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}
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/**
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* returns the pending update list
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*
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* @return array
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*/
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public function getUpdates() {
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return $this->update;
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}
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/**
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* returns the pending delete list
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*
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* @return array
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*/
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public function getDeletes() {
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return $this->delete;
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}
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public function getIterator() { }
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public function count() { }
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}
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