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From Jing Wu <jing.x...@oracle.com>
Subject Re: [TRINIDAD][API] JIRA 2253 - Ability to synchronize UI view size with model cache size
Date Wed, 28 Mar 2012 18:16:21 GMT
Any comments?

-Jing

On 3/27/2012 10:18 AM, Jing Wu wrote:
> Hi,
>
> please review the new API we added for JIRA 2253: 
> https://issues.apache.org/jira/browse/TRINIDAD-2253
>
> For table/tree/treeTable, it's very possible that some rows on the 
> client side may not be available in the model at server side. One 
> example is when the model supports ranging and range size is 
> relatively small. In that case, if one tries to access the row on 
> client that's not available in the model, issues will arise.
>
> This enhancement is to provide the ability to synchronize the number 
> of rows in the model with the number of rows at client, to make sure 
> the model contains at least the same amount of rows as that on the 
> client. The model can choose how to respond to size synchronization 
> depending on it's own logic.
>
> public method syncNumRows() is added to UIXCollection to initiate the 
> synchronization.
>
>   /**
>    * Synchronize the number of rows client and server cache. The server
>    * should keep no less what what client caches.
>    *
>    * @param numRows the number of rows client holds
>    */
>   public void syncNumRows(int numRows)
>   {
>     getCollectionModel().syncNumRows(numRows);
>   }
>
>
> The default implementation of syncNumRows on CollectionModel is to do 
> nothing.
>   /**
>    * Synchronize the number of rows client and server cache. For 
> collection models that
>    * do paging, they should keep row cache no less that what client holds.
>    *
>    * @param numRows the number of rows client holds
>    */
>   public void syncNumRows(int numRows)
>   {
>     return;
>  }
>
>
> Thanks,
> Jing
>

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