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<?php
namespace {
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Db
* @subpackage Profiler
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Profiler.php 23775 2011-03-01 17:25:24Z ralph $
*/
/**
* @category Zend
* @package Zend_Db
* @subpackage Profiler
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Db_Profiler
{
/**
* A connection operation or selecting a database.
*/
const CONNECT = 1;
/**
* Any general database query that does not fit into the other constants.
*/
const QUERY = 2;
/**
* Adding new data to the database, such as SQL's INSERT.
*/
const INSERT = 4;
/**
* Updating existing information in the database, such as SQL's UPDATE.
*
*/
const UPDATE = 8;
/**
* An operation related to deleting data in the database,
* such as SQL's DELETE.
*/
const DELETE = 16;
/**
* Retrieving information from the database, such as SQL's SELECT.
*/
const SELECT = 32;
/**
* Transactional operation, such as start transaction, commit, or rollback.
*/
const TRANSACTION = 64;
/**
* Inform that a query is stored (in case of filtering)
*/
const STORED = 'stored';
/**
* Inform that a query is ignored (in case of filtering)
*/
const IGNORED = 'ignored';
/**
* Array of Zend_Db_Profiler_Query objects.
*
* @var array
*/
protected $_queryProfiles = array();
/**
* Stores enabled state of the profiler. If set to False, calls to
* queryStart() will simply be ignored.
*
* @var boolean
*/
protected $_enabled = \false;
/**
* Stores the number of seconds to filter. NULL if filtering by time is
* disabled. If an integer is stored here, profiles whose elapsed time
* is less than this value in seconds will be unset from
* the self::$_queryProfiles array.
*
* @var integer
*/
protected $_filterElapsedSecs = null;
/**
* Logical OR of any of the filter constants. NULL if filtering by query
* type is disable. If an integer is stored here, it is the logical OR of
* any of the query type constants. When the query ends, if it is not
* one of the types specified, it will be unset from the
* self::$_queryProfiles array.
*
* @var integer
*/
protected $_filterTypes = null;
/**
* Class constructor. The profiler is disabled by default unless it is
* specifically enabled by passing in $enabled here or calling setEnabled().
*
* @param boolean $enabled
* @return void
*/
public function __construct($enabled = \false)
{
$this->setEnabled($enabled);
}
/**
* Enable or disable the profiler. If $enable is false, the profiler
* is disabled and will not log any queries sent to it.
*
* @param boolean $enable
* @return Zend_Db_Profiler Provides a fluent interface
*/
public function setEnabled($enable)
{
$this->_enabled = (bool) $enable;
return $this;
}
/**
* Get the current state of enable. If True is returned,
* the profiler is enabled.
*
* @return boolean
*/
public function getEnabled()
{
return $this->_enabled;
}
/**
* Sets a minimum number of seconds for saving query profiles. If this
* is set, only those queries whose elapsed time is equal or greater than
* $minimumSeconds will be saved. To save all queries regardless of
* elapsed time, set $minimumSeconds to null.
*
* @param integer $minimumSeconds OPTIONAL
* @return Zend_Db_Profiler Provides a fluent interface
*/
public function setFilterElapsedSecs($minimumSeconds = null)
{
if (null === $minimumSeconds) {
$this->_filterElapsedSecs = null;
} else {
$this->_filterElapsedSecs = (int) $minimumSeconds;
}
return $this;
}
/**
* Returns the minimum number of seconds for saving query profiles, or null if
* query profiles are saved regardless of elapsed time.
*
* @return integer|null
*/
public function getFilterElapsedSecs()
{
return $this->_filterElapsedSecs;
}
/**
* Sets the types of query profiles to save. Set $queryType to one of
* the Zend_Db_Profiler::* constants to only save profiles for that type of
* query. To save more than one type, logical OR them together. To
* save all queries regardless of type, set $queryType to null.
*
* @param integer $queryTypes OPTIONAL
* @return Zend_Db_Profiler Provides a fluent interface
*/
public function setFilterQueryType($queryTypes = null)
{
$this->_filterTypes = $queryTypes;
return $this;
}
/**
* Returns the types of query profiles saved, or null if queries are saved regardless
* of their types.
*
* @return integer|null
* @see Zend_Db_Profiler::setFilterQueryType()
*/
public function getFilterQueryType()
{
return $this->_filterTypes;
}
/**
* Clears the history of any past query profiles. This is relentless
* and will even clear queries that were started and may not have
* been marked as ended.
*
* @return Zend_Db_Profiler Provides a fluent interface
*/
public function clear()
{
$this->_queryProfiles = array();
return $this;
}
/**
* @param integer $queryId
* @return integer or null
*/
public function queryClone(\Zend_Db_Profiler_Query $query)
{
$this->_queryProfiles[] = clone $query;
\end($this->_queryProfiles);
return \key($this->_queryProfiles);
}
/**
* Starts a query. Creates a new query profile object (Zend_Db_Profiler_Query)
* and returns the "query profiler handle". Run the query, then call
* queryEnd() and pass it this handle to make the query as ended and
* record the time. If the profiler is not enabled, this takes no
* action and immediately returns null.
*
* @param string $queryText SQL statement
* @param integer $queryType OPTIONAL Type of query, one of the Zend_Db_Profiler::* constants
* @return integer|null
*/
public function queryStart($queryText, $queryType = null)
{
if (!$this->_enabled) {
return null;
}
// make sure we have a query type
if (null === $queryType) {
switch (\strtolower(\substr(\ltrim($queryText), 0, 6))) {
case 'insert':
$queryType = self::INSERT;
break;
case 'update':
$queryType = self::UPDATE;
break;
case 'delete':
$queryType = self::DELETE;
break;
case 'select':
$queryType = self::SELECT;
break;
default:
$queryType = self::QUERY;
break;
}
}
/**
* @see Zend_Db_Profiler_Query
*/
// require_once 'Zend/Db/Profiler/Query.php';
$this->_queryProfiles[] = new \Zend_Db_Profiler_Query($queryText, $queryType);
\end($this->_queryProfiles);
return \key($this->_queryProfiles);
}
/**
* Ends a query. Pass it the handle that was returned by queryStart().
* This will mark the query as ended and save the time.
*
* @param integer $queryId
* @throws Zend_Db_Profiler_Exception
* @return void
*/
public function queryEnd($queryId)
{
// Don't do anything if the Zend_Db_Profiler is not enabled.
if (!$this->_enabled) {
return self::IGNORED;
}
// Check for a valid query handle.
if (!isset($this->_queryProfiles[$queryId])) {
/**
* @see Zend_Db_Profiler_Exception
*/
// require_once 'Zend/Db/Profiler/Exception.php';
throw new \Zend_Db_Profiler_Exception("Profiler has no query with handle '{$queryId}'.");
}
$qp = $this->_queryProfiles[$queryId];
// Ensure that the query profile has not already ended
if ($qp->hasEnded()) {
/**
* @see Zend_Db_Profiler_Exception
*/
// require_once 'Zend/Db/Profiler/Exception.php';
throw new \Zend_Db_Profiler_Exception("Query with profiler handle '{$queryId}' has already ended.");
}
// End the query profile so that the elapsed time can be calculated.
$qp->end();
/**
* If filtering by elapsed time is enabled, only keep the profile if
* it ran for the minimum time.
*/
if (null !== $this->_filterElapsedSecs && $qp->getElapsedSecs() < $this->_filterElapsedSecs) {
unset($this->_queryProfiles[$queryId]);
return self::IGNORED;
}
/**
* If filtering by query type is enabled, only keep the query if
* it was one of the allowed types.
*/
if (null !== $this->_filterTypes && !($qp->getQueryType() & $this->_filterTypes)) {
unset($this->_queryProfiles[$queryId]);
return self::IGNORED;
}
return self::STORED;
}
/**
* Get a profile for a query. Pass it the same handle that was returned
* by queryStart() and it will return a Zend_Db_Profiler_Query object.
*
* @param integer $queryId
* @throws Zend_Db_Profiler_Exception
* @return Zend_Db_Profiler_Query
*/
public function getQueryProfile($queryId)
{
if (!\array_key_exists($queryId, $this->_queryProfiles)) {
/**
* @see Zend_Db_Profiler_Exception
*/
// require_once 'Zend/Db/Profiler/Exception.php';
throw new \Zend_Db_Profiler_Exception("Query handle '{$queryId}' not found in profiler log.");
}
return $this->_queryProfiles[$queryId];
}
/**
* Get an array of query profiles (Zend_Db_Profiler_Query objects). If $queryType
* is set to one of the Zend_Db_Profiler::* constants then only queries of that
* type will be returned. Normally, queries that have not yet ended will
* not be returned unless $showUnfinished is set to True. If no
* queries were found, False is returned. The returned array is indexed by the query
* profile handles.
*
* @param integer $queryType
* @param boolean $showUnfinished
* @return array|false
*/
public function getQueryProfiles($queryType = null, $showUnfinished = \false)
{
$queryProfiles = array();
foreach ($this->_queryProfiles as $key => $qp) {
if ($queryType === null) {
$condition = \true;
} else {
$condition = $qp->getQueryType() & $queryType;
}
if (($qp->hasEnded() || $showUnfinished) && $condition) {
$queryProfiles[$key] = $qp;
}
}
if (empty($queryProfiles)) {
$queryProfiles = \false;
}
return $queryProfiles;
}
/**
* Get the total elapsed time (in seconds) of all of the profiled queries.
* Only queries that have ended will be counted. If $queryType is set to
* one or more of the Zend_Db_Profiler::* constants, the elapsed time will be calculated
* only for queries of the given type(s).
*
* @param integer $queryType OPTIONAL
* @return float
*/
public function getTotalElapsedSecs($queryType = null)
{
$elapsedSecs = 0;
foreach ($this->_queryProfiles as $key => $qp) {
if (null === $queryType) {
$condition = \true;
} else {
$condition = $qp->getQueryType() & $queryType;
}
if ($qp->hasEnded() && $condition) {
$elapsedSecs += $qp->getElapsedSecs();
}
}
return $elapsedSecs;
}
/**
* Get the total number of queries that have been profiled. Only queries that have ended will
* be counted. If $queryType is set to one of the Zend_Db_Profiler::* constants, only queries of
* that type will be counted.
*
* @param integer $queryType OPTIONAL
* @return integer
*/
public function getTotalNumQueries($queryType = null)
{
if (null === $queryType) {
return \count($this->_queryProfiles);
}
$numQueries = 0;
foreach ($this->_queryProfiles as $qp) {
if ($qp->hasEnded() && $qp->getQueryType() & $queryType) {
$numQueries++;
}
}
return $numQueries;
}
/**
* Get the Zend_Db_Profiler_Query object for the last query that was run, regardless if it has
* ended or not. If the query has not ended, its end time will be null. If no queries have
* been profiled, false is returned.
*
* @return Zend_Db_Profiler_Query|false
*/
public function getLastQueryProfile()
{
if (empty($this->_queryProfiles)) {
return \false;
}
\end($this->_queryProfiles);
return \current($this->_queryProfiles);
}
}
}