Log

Database query logger.

We log queries in a separate object rather than in the connection object because we want to be able to see all queries sent to a given database, not database target. If we logged the queries in each connection object we would not be able to track what queries went to which target.

Every connection has one and only one logging object on it for all targets and logging keys.

Hierarchy

class \Drupal\Core\Database\Log

File

core/lib/Drupal/Core/Database/Log.php, line 16

Namespace

Drupal\Core\Database

Members

Name	Modifiers	Type	Description
Log::$connectionKey	protected	property	The connection key for which this object is logging.
Log::$queryLog	protected	property	Cache of logged queries. This will only be used if the query logger is enabled.
Log::clear	public	function	Empty the query log for the specified logging key.
Log::end	public	function	Stop logging for the specified logging key.
Log::findCaller	public	function	Determine the routine that called this query.
Log::get	public	function	Retrieve the query log for the specified logging key so far.
Log::log	public	function	Log a query to all active logging keys.
Log::start	public	function	Begin logging queries to the specified connection and logging key.
Log::__construct	public	function	Constructor.

Links:

https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Database%21Log.php/class/Log/8.2.x

doc_Drupal

2016-10-29 09:24:56

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