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<div class='example-title'><h4>Check-in/check-out</h4></div> 
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Joomla tables implement a simple mechanism for preventing a [[wikipedia:race condition|race condition]] while editing rows in a database.  This depends on the existence of database fields called "checked_out" and "checked_out_time" and if these fields are present '''JTable''' will automatically support this mechanism so that it can be easily used in your tables too.  In addition to the [[JTable/checkOut|checkOut]] and [[JTable/checkIn|checkIn]] methods, there is a [[JTable/isCheckedOut|isCheckedOut]] method to determine if a given table row is currently checked out by another user.
 

<div class='comment-signature'>[[User:Chris Davenport|Chris Davenport]] 12:23, 17 April 2011 (CDT) [[CodeExample:4dab22169ccc3 |Edit comment]]</div></div></div> 

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