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From "deepak va" <deepa...@hotmail.com>
Subject Re: AbstractPagerTool
Date Thu, 03 May 2007 09:29:55 GMT
thanks a lot it worked....


>From: "Nathan Bubna" <nbubna@gmail.com>
>Reply-To: "Velocity Users List" <user@velocity.apache.org>
>To: "Velocity Users List" <user@velocity.apache.org>
>Subject: Re: AbstractPagerTool
>Date: Wed, 2 May 2007 12:33:54 -0700
>
>On 5/2/07, deepak va <deepakva@hotmail.com> wrote:
>>please let me know what you meant by "if there is an HttpSession for the
>>request" .
>>How so i set the same.
>
>are you familiar with the servlet API?
>http://java.sun.com/products/servlet/2.5/docs/servlet-2_5-mr2/index.html
>
>Specifically, you should read:
>http://java.sun.com/products/servlet/2.5/docs/servlet-2_5-mr2/javax/servlet/http/HttpSession.html
>
>>I modified the code as below. But for every request the 
>>setItems(tradelist)
>>is getting called.
>>
>>Please suggest what iam missing.
>
>try adding:
>
>this.session = request.getSession(true);
>
>before the call to setItems(tradelist);
>
>>
>> >From: "Nathan Bubna" <nbubna@gmail.com>
>> >Reply-To: "Velocity Users List" <user@velocity.apache.org>
>> >To: "Velocity Users List" <user@velocity.apache.org>
>> >Subject: Re: AbstractPagerTool
>> >Date: Tue, 1 May 2007 14:09:52 -0700
>> >
>> >setup(HttpServletRequest) is called every request.  you only want to
>> >call setItems() once per list being paginated.   if there is an
>> >HttpSession for the request, then the call to setItems() will try to
>> >store the item list in the session.  this would then let you do:
>> >
>> >public void setup(HttpServletRequest req)
>> >       {
>> >                       ParameterParser pp = new ParameterParser(req);
>> >                       setIndex(pp.getInt("index",0));
>> >                       setItemsPerPage(pp.getInt("show", 10));
>> >
>> >                       setSlipSize(10);
>> >
>> >                       if (!hasItems()) {
>> >                            List tradelist = getDataFromDatabase();
>> >                            setItems(tradelist);
>> >                       }
>> >       }
>> >
>> >in general, though, it is up to you to see that setItems() isn't
>> >called on every request.  the solution above will work if the item
>> >list never changes, but they often do.  so, you'll probably also want
>> >to create some hook to refresh the item list when appropriate.
>> >
>> >
>> >On 5/1/07, deepak va <deepakva@hotmail.com> wrote:
>> >>Hi ,
>> >>
>> >>Iam using the AbstractPagerTool for pagination.
>> >>
>> >>I have written a Test class which extends AbstractPagerTool. Test class
>> >>has
>> >>the below code.
>> >>For every click on the pagination link a call is made to the database 
>>for
>> >>fetching the records.
>> >>This is not the expected behaviour. We want to get the values once from
>> >>the
>> >>database and use it subsequently.
>> >>
>> >>Please suggest how to achieve this.
>> >>
>> >>
>> >>*****************************************
>> >>public void setup(HttpServletRequest req)
>> >>         {
>> >>                         ParameterParser pp = new ParameterParser(req);
>> >>                         setIndex(pp.getInt("index",0));
>> >>                         setItemsPerPage(pp.getInt("show", 10));
>> >>
>> >>                         setSlipSize(10);
>> >>
>> >>                 List tradelist = getDataFromDatabase();
>> >>                         setItems(tradelist);
>> >>
>> >>
>> >>         }
>> >>
>> >>
>> >>**************************************
>> >>
>> >>Regards
>> >>Deepak
>> >>
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