CI_DB_Cache
===============

Database Cache Class




* Class name: CI_DB_Cache
* Namespace: 





Properties
----------


### $CI

    public object $CI

CI Singleton



* Visibility: **public**


### $db

    public object $db

Database object

Allows passing of DB object so that multiple database connections
and returned DB objects can be supported.

* Visibility: **public**


Methods
-------


### __construct

    void CI_DB_Cache::__construct($db)

Constructor



* Visibility: **public**


#### Arguments
* $db **mixed**



### check_path

    boolean CI_DB_Cache::check_path(string $path)

Set Cache Directory Path



* Visibility: **public**


#### Arguments
* $path **string** - <p>Path to the cache directory</p>



### read

    string CI_DB_Cache::read(string $sql)

Retrieve a cached query

The URI being requested will become the name of the cache sub-folder.
An MD5 hash of the SQL statement will become the cache file name.

* Visibility: **public**


#### Arguments
* $sql **string**



### write

    boolean CI_DB_Cache::write(string $sql, object $object)

Write a query to a cache file



* Visibility: **public**


#### Arguments
* $sql **string**
* $object **object**



### delete

    void CI_DB_Cache::delete(string $segment_one, string $segment_two)

Delete cache files within a particular directory



* Visibility: **public**


#### Arguments
* $segment_one **string**
* $segment_two **string**



### delete_all

    void CI_DB_Cache::delete_all()

Delete all existing cache files



* Visibility: **public**