524 lines
17 KiB
PHP
524 lines
17 KiB
PHP
<?php
|
|
/*
|
|
* $Id$
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software consists of voluntary contributions made by many individuals
|
|
* and is licensed under the LGPL. For more information, see
|
|
* <http://www.phpdoctrine.com>.
|
|
*/
|
|
Doctrine::autoload('Doctrine_Connection_Module');
|
|
/**
|
|
* Doctrine_Transaction
|
|
* Handles transaction savepoint and isolation abstraction
|
|
*
|
|
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
|
|
* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
|
|
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
|
|
* @package Doctrine
|
|
* @category Object Relational Mapping
|
|
* @link www.phpdoctrine.com
|
|
* @since 1.0
|
|
* @version $Revision$
|
|
*/
|
|
class Doctrine_Transaction extends Doctrine_Connection_Module
|
|
{
|
|
/**
|
|
* Doctrine_Transaction is in sleep state when it has no active transactions
|
|
*/
|
|
const STATE_SLEEP = 0;
|
|
/**
|
|
* Doctrine_Transaction is in active state when it has one active transaction
|
|
*/
|
|
const STATE_ACTIVE = 1;
|
|
/**
|
|
* Doctrine_Transaction is in busy state when it has multiple active transactions
|
|
*/
|
|
const STATE_BUSY = 2;
|
|
/**
|
|
* @var integer $transactionLevel the nesting level of transactions, used by transaction methods
|
|
*/
|
|
protected $transactionLevel = 0;
|
|
/**
|
|
* @var array $invalid an array containing all invalid records within this transaction
|
|
*/
|
|
protected $invalid = array();
|
|
/**
|
|
* @var array $delete two dimensional pending delete list, the records in
|
|
* this list will be deleted when transaction is committed
|
|
*/
|
|
protected $delete = array();
|
|
/**
|
|
* @var array $savepoints an array containing all savepoints
|
|
*/
|
|
protected $savePoints = array();
|
|
/**
|
|
* @var array $_collections an array of Doctrine_Collection objects that were affected during the Transaction
|
|
*/
|
|
protected $_collections = array();
|
|
|
|
/**
|
|
* addCollection
|
|
* adds a collection in the internal array of collections
|
|
*
|
|
* at the end of each commit this array is looped over and
|
|
* of every collection Doctrine then takes a snapshot in order
|
|
* to keep the collections up to date with the database
|
|
*
|
|
* @param Doctrine_Collection $coll a collection to be added
|
|
* @return Doctrine_Transaction this object
|
|
*/
|
|
public function addCollection(Doctrine_Collection $coll)
|
|
{
|
|
$this->_collections[] = $coll;
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* getState
|
|
* returns the state of this connection
|
|
*
|
|
* @see Doctrine_Connection_Transaction::STATE_* constants
|
|
* @return integer the connection state
|
|
*/
|
|
public function getState()
|
|
{
|
|
switch ($this->transactionLevel) {
|
|
case 0:
|
|
return Doctrine_Transaction::STATE_SLEEP;
|
|
break;
|
|
case 1:
|
|
return Doctrine_Transaction::STATE_ACTIVE;
|
|
break;
|
|
default:
|
|
return Doctrine_Transaction::STATE_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* addDelete
|
|
* adds record into pending delete list
|
|
*
|
|
* @param Doctrine_Record $record a record to be added
|
|
* @return void
|
|
*/
|
|
public function addDelete(Doctrine_Record $record)
|
|
{
|
|
$name = $record->getTable()->getComponentName();
|
|
$this->delete[$name][] = $record;
|
|
}
|
|
|
|
/**
|
|
* addInvalid
|
|
* adds record into invalid records list
|
|
*
|
|
* @param Doctrine_Record $record
|
|
* @return boolean false if record already existed in invalid records list,
|
|
* otherwise true
|
|
*/
|
|
public function addInvalid(Doctrine_Record $record)
|
|
{
|
|
if (in_array($record, $this->invalid, true)) {
|
|
return false;
|
|
}
|
|
$this->invalid[] = $record;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* returns the pending delete list
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getDeletes()
|
|
{
|
|
return $this->delete;
|
|
}
|
|
|
|
/**
|
|
* bulkDelete
|
|
* deletes all records from the pending delete list
|
|
*
|
|
* @return void
|
|
*/
|
|
public function bulkDelete()
|
|
{
|
|
|
|
foreach ($this->delete as $name => $deletes) {
|
|
$record = false;
|
|
$ids = array();
|
|
|
|
if (is_array($deletes[count($deletes)-1]->getTable()->getIdentifier())) {
|
|
if (count($deletes) > 0) {
|
|
$query = 'DELETE FROM '
|
|
. $this->conn->quoteIdentifier($deletes[0]->getTable()->getTableName())
|
|
. ' WHERE ';
|
|
|
|
$params = array();
|
|
$cond = array();
|
|
foreach ($deletes as $k => $record) {
|
|
$ids = $record->identifier();
|
|
$tmp = array();
|
|
foreach (array_keys($ids) as $id){
|
|
$tmp[] = $id . ' = ? ';
|
|
}
|
|
$params = array_merge($params, array_values($ids));
|
|
$cond[] = '(' . implode(' AND ', $tmp) . ')';
|
|
}
|
|
$query .= implode(' OR ', $cond);
|
|
|
|
$this->conn->execute($query, $params);
|
|
}
|
|
} else {
|
|
foreach ($deletes as $k => $record) {
|
|
$ids[] = $record->getIncremented();
|
|
}
|
|
if ($record instanceof Doctrine_Record) {
|
|
$params = substr(str_repeat('?, ', count($ids)), 0, -2);
|
|
|
|
$query = 'DELETE FROM '
|
|
. $this->conn->quoteIdentifier($record->getTable()->getTableName())
|
|
. ' WHERE '
|
|
. $record->getTable()->getIdentifier()
|
|
. ' IN(' . $params . ')';
|
|
|
|
$this->conn->execute($query, $ids);
|
|
}
|
|
}
|
|
|
|
}
|
|
$this->delete = array();
|
|
}
|
|
/**
|
|
* getTransactionLevel
|
|
* get the current transaction nesting level
|
|
*
|
|
* @return integer
|
|
*/
|
|
public function getTransactionLevel()
|
|
{
|
|
return $this->transactionLevel;
|
|
}
|
|
/**
|
|
* getTransactionLevel
|
|
* set the current transaction nesting level
|
|
*
|
|
* @return Doctrine_Transaction this object
|
|
*/
|
|
public function setTransactionLevel($level)
|
|
{
|
|
$this->transactionLevel = $level;
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* beginTransaction
|
|
* Start a transaction or set a savepoint.
|
|
*
|
|
* if trying to set a savepoint and there is no active transaction
|
|
* a new transaction is being started
|
|
*
|
|
* Listeners: onPreTransactionBegin, onTransactionBegin
|
|
*
|
|
* @param string $savepoint name of a savepoint to set
|
|
* @throws Doctrine_Transaction_Exception if the transaction fails at database level
|
|
* @return integer current transaction nesting level
|
|
*/
|
|
public function beginTransaction($savepoint = null)
|
|
{
|
|
$this->conn->connect();
|
|
|
|
$listener = $this->conn->getAttribute(Doctrine::ATTR_LISTENER);
|
|
|
|
if ( ! is_null($savepoint)) {
|
|
$this->savePoints[] = $savepoint;
|
|
|
|
$event = new Doctrine_Event($this, Doctrine_Event::SAVEPOINT_CREATE);
|
|
|
|
$listener->preSavepointCreate($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
$this->createSavePoint($savepoint);
|
|
}
|
|
|
|
$listener->postSavepointCreate($event);
|
|
} else {
|
|
if ($this->transactionLevel == 0) {
|
|
$event = new Doctrine_Event($this, Doctrine_Event::TX_BEGIN);
|
|
|
|
$listener->preTransactionBegin($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
try {
|
|
$this->conn->getDbh()->beginTransaction();
|
|
} catch(Exception $e) {
|
|
throw new Doctrine_Transaction_Exception($e->getMessage());
|
|
}
|
|
}
|
|
$listener->postTransactionBegin($event);
|
|
}
|
|
}
|
|
|
|
$level = ++$this->transactionLevel;
|
|
|
|
return $level;
|
|
}
|
|
/**
|
|
* commit
|
|
* Commit the database changes done during a transaction that is in
|
|
* progress or release a savepoint. This function may only be called when
|
|
* auto-committing is disabled, otherwise it will fail.
|
|
*
|
|
* Listeners: preTransactionCommit, postTransactionCommit
|
|
*
|
|
* @param string $savepoint name of a savepoint to release
|
|
* @throws Doctrine_Transaction_Exception if the transaction fails at database level
|
|
* @throws Doctrine_Validator_Exception if the transaction fails due to record validations
|
|
* @return boolean false if commit couldn't be performed, true otherwise
|
|
*/
|
|
public function commit($savepoint = null)
|
|
{
|
|
$this->conn->connect();
|
|
|
|
if ($this->transactionLevel == 0) {
|
|
return false;
|
|
}
|
|
|
|
$listener = $this->conn->getAttribute(Doctrine::ATTR_LISTENER);
|
|
|
|
if ( ! is_null($savepoint)) {
|
|
$this->transactionLevel -= $this->removeSavePoints($savepoint);
|
|
|
|
$event = new Doctrine_Event($this, Doctrine_Event::SAVEPOINT_COMMIT);
|
|
|
|
$listener->preSavepointCommit($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
$this->releaseSavePoint($savepoint);
|
|
}
|
|
|
|
$listener->postSavepointCommit($event);
|
|
} else {
|
|
|
|
if ($this->transactionLevel == 1) {
|
|
$event = new Doctrine_Event($this, Doctrine_Event::TX_COMMIT);
|
|
|
|
$listener->preTransactionCommit($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
try {
|
|
$this->bulkDelete();
|
|
|
|
} catch(Exception $e) {
|
|
$this->rollback();
|
|
|
|
throw new Doctrine_Transaction_Exception($e->getMessage());
|
|
}
|
|
if ( ! empty($this->invalid)) {
|
|
$this->rollback();
|
|
|
|
$tmp = $this->invalid;
|
|
$this->invalid = array();
|
|
|
|
throw new Doctrine_Validator_Exception($tmp);
|
|
}
|
|
|
|
// take snapshots of all collections used within this transaction
|
|
foreach ($this->_collections as $coll) {
|
|
$coll->takeSnapshot();
|
|
}
|
|
$this->_collections = array();
|
|
$this->conn->getDbh()->commit();
|
|
|
|
//$this->conn->unitOfWork->reset();
|
|
}
|
|
|
|
$listener->postTransactionCommit($event);
|
|
}
|
|
|
|
$this->transactionLevel--;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* rollback
|
|
* Cancel any database changes done during a transaction or since a specific
|
|
* savepoint that is in progress. This function may only be called when
|
|
* auto-committing is disabled, otherwise it will fail. Therefore, a new
|
|
* transaction is implicitly started after canceling the pending changes.
|
|
*
|
|
* this method can be listened with onPreTransactionRollback and onTransactionRollback
|
|
* eventlistener methods
|
|
*
|
|
* @param string $savepoint name of a savepoint to rollback to
|
|
* @throws Doctrine_Transaction_Exception if the rollback operation fails at database level
|
|
* @return boolean false if rollback couldn't be performed, true otherwise
|
|
*/
|
|
public function rollback($savepoint = null)
|
|
{
|
|
$this->conn->connect();
|
|
|
|
if ($this->transactionLevel == 0) {
|
|
return false;
|
|
}
|
|
|
|
$listener = $this->conn->getAttribute(Doctrine::ATTR_LISTENER);
|
|
|
|
if ( ! is_null($savepoint)) {
|
|
$this->transactionLevel -= $this->removeSavePoints($savepoint);
|
|
|
|
$event = new Doctrine_Event($this, Doctrine_Event::SAVEPOINT_ROLLBACK);
|
|
|
|
$listener->preSavepointRollback($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
$this->rollbackSavePoint($savepoint);
|
|
}
|
|
|
|
$listener->postSavepointRollback($event);
|
|
} else {
|
|
$event = new Doctrine_Event($this, Doctrine_Event::TX_ROLLBACK);
|
|
|
|
$listener->preTransactionRollback($event);
|
|
|
|
if ( ! $event->skipOperation) {
|
|
$this->deteles = array();
|
|
|
|
$this->transactionLevel = 0;
|
|
try {
|
|
$this->conn->getDbh()->rollback();
|
|
} catch (Exception $e) {
|
|
throw new Doctrine_Transaction_Exception($e->getMessage());
|
|
}
|
|
}
|
|
|
|
$listener->postTransactionRollback($event);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* releaseSavePoint
|
|
* creates a new savepoint
|
|
*
|
|
* @param string $savepoint name of a savepoint to create
|
|
* @return void
|
|
*/
|
|
protected function createSavePoint($savepoint)
|
|
{
|
|
throw new Doctrine_Transaction_Exception('Savepoints not supported by this driver.');
|
|
}
|
|
|
|
/**
|
|
* releaseSavePoint
|
|
* releases given savepoint
|
|
*
|
|
* @param string $savepoint name of a savepoint to release
|
|
* @return void
|
|
*/
|
|
protected function releaseSavePoint($savepoint)
|
|
{
|
|
throw new Doctrine_Transaction_Exception('Savepoints not supported by this driver.');
|
|
}
|
|
|
|
/**
|
|
* rollbackSavePoint
|
|
* releases given savepoint
|
|
*
|
|
* @param string $savepoint name of a savepoint to rollback to
|
|
* @return void
|
|
*/
|
|
protected function rollbackSavePoint($savepoint)
|
|
{
|
|
throw new Doctrine_Transaction_Exception('Savepoints not supported by this driver.');
|
|
}
|
|
|
|
/**
|
|
* removeSavePoints
|
|
* removes a savepoint from the internal savePoints array of this transaction object
|
|
* and all its children savepoints
|
|
*
|
|
* @param sring $savepoint name of the savepoint to remove
|
|
* @return integer removed savepoints
|
|
*/
|
|
private function removeSavePoints($savepoint)
|
|
{
|
|
$this->savePoints = array_values($this->savePoints);
|
|
|
|
$found = false;
|
|
$i = 0;
|
|
|
|
foreach ($this->savePoints as $key => $sp) {
|
|
if ( ! $found) {
|
|
if ($sp === $savepoint) {
|
|
$found = true;
|
|
}
|
|
}
|
|
if ($found) {
|
|
$i++;
|
|
unset($this->savePoints[$key]);
|
|
}
|
|
}
|
|
|
|
return $i;
|
|
}
|
|
|
|
/**
|
|
* setIsolation
|
|
*
|
|
* Set the transacton isolation level.
|
|
* (implemented by the connection drivers)
|
|
*
|
|
* example:
|
|
*
|
|
* <code>
|
|
* $tx->setIsolation('READ UNCOMMITTED');
|
|
* </code>
|
|
*
|
|
* @param string standard isolation level
|
|
* READ UNCOMMITTED (allows dirty reads)
|
|
* READ COMMITTED (prevents dirty reads)
|
|
* REPEATABLE READ (prevents nonrepeatable reads)
|
|
* SERIALIZABLE (prevents phantom reads)
|
|
*
|
|
* @throws Doctrine_Transaction_Exception if the feature is not supported by the driver
|
|
* @throws PDOException if something fails at the PDO level
|
|
* @return void
|
|
*/
|
|
public function setIsolation($isolation)
|
|
{
|
|
throw new Doctrine_Transaction_Exception('Transaction isolation levels not supported by this driver.');
|
|
}
|
|
|
|
/**
|
|
* getTransactionIsolation
|
|
*
|
|
* fetches the current session transaction isolation level
|
|
*
|
|
* note: some drivers may support setting the transaction isolation level
|
|
* but not fetching it
|
|
*
|
|
* @throws Doctrine_Transaction_Exception if the feature is not supported by the driver
|
|
* @throws PDOException if something fails at the PDO level
|
|
* @return string returns the current session transaction isolation level
|
|
*/
|
|
public function getIsolation()
|
|
{
|
|
throw new Doctrine_Transaction_Exception('Fetching transaction isolation level not supported by this driver.');
|
|
}
|
|
}
|