Fixes #53. Augmented the log data deletion feature. Added the ability to purge old reports and metrics.

Other changes:
  * Added the following plugin functions: Piwik_DropTables, Piwik_OptimizeTables, Piwik_DeleteAllRows. Also refactored existing code to use them.
  * Modified graph, tag cloud & datatable templates/views to show a different message if there's no data for a report and if its possible that report was purged.
  * Refactored DbStats API, added getAllTablesStatus method that doesn't modify the SHOW TABLE STATUS result.
  * Deletelogs config options are now stored in the DB.
  * Added task priority support to the TaskScheduler.



git-svn-id: http://dev.piwik.org/svn/trunk@6174 59fd770c-687e-43c8-a1e3-f5a4ff64c105

1 files changed, 23 insertions, 1 deletions

diff --git a/core/ScheduledTask.php b/core/ScheduledTask.php
index 4f855cb495..b1e5ee63bc 100644
--- a/core/ScheduledTask.php
+++ b/core/ScheduledTask.php
@@ -18,6 +18,10 @@
  */
 class Piwik_ScheduledTask
 {
+	const LOW_PRIORITY = 2;
+	const NORMAL_PRIORITY = 1;
+	const HIGH_PRIORITY = 0;
+	
 	/**
 	 * Class name where the specified method is located
 	 * @var string 
@@ -35,12 +39,19 @@ class Piwik_ScheduledTask
 	 * @var Piwik_ScheduledTime
 	 */
 	var $scheduledTime;
+	
+	/**
+	 * The priority of a task. Affects the order in which this task will be run.
+	 * @var int
+	 */
+	var $priority;
 
-	function __construct( $_className, $_methodName, $_scheduledTime)
+	function __construct( $_className, $_methodName, $_scheduledTime, $_priority = self::NORMAL_PRIORITY )
 	{
 		$this->className = $_className;
 		$this->methodName = $_methodName;
 		$this->scheduledTime = $_scheduledTime;
+		$this->priority = $_priority;
 	}
 	
 	/*
@@ -69,4 +80,15 @@ class Piwik_ScheduledTask
 	{
 		return $this->scheduledTime;
 	}
+	
+	/**
+	 * Returns the task priority. The priority will be an integer whose value is
+	 * between Piwik_ScheduledTask::HIGH_PRIORITY and Piwik_ScheduledTask::LOW_PRIORITY.
+	 * 
+	 * @return int
+	 */
+	public function getPriority()
+	{
+		return $this->priority;
+	}
 }