====== _construct ======
{#JAPI Joomla.Framework Cache JCache::__construct #}

This is the class constructor. The constructor sets up the default group to use for function caching and builds the cache directory.

===== Syntax =====
void <nowiki>__construct</nowiki> ( **$options** )
| **$options** | array | is an associative array of options. | 

The following are the available options:
  * defaultGroup - the default cache group for function grouping.
  * cacheDir - the cache directory to be used. If not present, the Joomla! configuration cache path will be used.
  * automaticSerialization - specifies whether or not automatic serialization should be used.
  * fileNameProtection - specifies whether or notto use file name protection.
  * memoryCaching - specifies whether or not to use memory caching.
  * onlyMemoryCaching - specifies whether or not ONLY memory caching should be used.
  * memoryCachingLimit - the memory caching limit.
  * caching - specifies whether or not caching should be used.
  * lifeTime - the lifetime of objects in the cache.
  * fileLocking - specifies whether or not file locking should be used.
  * writeControl - specifies whether or not write control should be used.
  * readControl - specifies whether or not read control should be used.
  * readControlType - the type of read control to be used.
  * pearErrorMode - the pear error mode to be used.|

Further information on the options array can be obtained from the [[http://pear.php.net/package/Cache_Lite/|Cache_Lite]] website.
===== Examples =====
Since this is an abstract class, the constructor is not called directly. The class is instantiated by calling the [[references:joomla.framework:jfactory-getCache|JFactory::getCache]] method. This method will instantiate the appropriate child class. This constructor is called by the child class using:
<code php|Example>
parent::_construct( $options );
</code>

~~DISCUSSION~~