Can I remove multiple entries from Cache in a single go?

[Rupesh Khandelwal <ru...@gmail.com>]

Hi,

I am using JCS cache for storing objects that I need to display very
frequently.

For every entry the key looks like *LIST_2_AGENT_123981*,
the pattern is like *Type_Source Id_Object Type_Object ID*.
Total entries following the same pattern evaluates to *4*10*40*1000*

Whenever I refresh the data source, I need to remove all the data
corresponding to it.
To remove all the entries starting with *LIST_2* can I call remove method
with some key like *LIST_2_** i.e. in general, *Type|Source Id|**

Please suggest how can I achieve above requirement in JCS.

Regards,
Rupesh K

Re: Can I remove multiple entries from Cache in a single go?

[Aaron Smuts <as...@yahoo.com>]

Yes, but it is somewhat expensive, since some of the
auxiliaries will have to iterate over their keysets. 
Although all the auxiliaries honor this, it is not
part of the auxiliary API.  There is no method along
the lins of "removeStartingWith", but all the remove
methods can do it. 

By default, the hierarchical key delimiter used in JCS
is a colon.  You cannot add a String key that ends
with a colon.  If you call remove with a String key
that ends in a colon, everything that has a key that
starts with the argument will be removed.

If your keys are in this format

TYPE:SOURCE:OBJECT

And you put n objects int he cache with keys like this

"ABC:123:0"  to "ABC:123:n"

then you could remove all the obejcts by calling 

jcs.remove( "ABC:123:" );

Cheers,

Aaron



--- Rupesh Khandelwal <ru...@gmail.com>
wrote:

> Hi,
> 
> I am using JCS cache for storing objects that I need
> to display very
> frequently.
> 
> For every entry the key looks like
> *LIST_2_AGENT_123981*,
> the pattern is like *Type_Source Id_Object
> Type_Object ID*.
> Total entries following the same pattern evaluates
> to *4*10*40*1000*
> 
> Whenever I refresh the data source, I need to remove
> all the data
> corresponding to it.
> To remove all the entries starting with *LIST_2* can
> I call remove method
> with some key like *LIST_2_** i.e. in general,
> *Type|Source Id|**
> 
> Please suggest how can I achieve above requirement
> in JCS.
> 
> Regards,
> Rupesh K
> 


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