Re: Grid component and available rows number
Hello You may have a look on the implementation of the GridDataSource for Hibernate http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-hibernate/src/main/java/org/apache/tapestry5/hibernate/HibernateGridDataSource.java?view=markup BR Renat 2008/10/14 shymon [EMAIL PROTECTED]: I wanted to use a grid component to display search results. So I tried to define a class which implements GridDataSource interface. Unfortunatelly getAvailableRecords() method is called by T5 before prepare(...) method. This doesn't suit me as I receive total record number with search results only. My search engine is accessed through XML-RPC and has a Query(...) method which performs the search. This method returns a dictionary (or hashtable) containing search results and some other info including total number of records matching given query. Of course I can trigger Query(...) method from getAvailableRecords() or even before, but I don't have information about indexFrom, indexTo and sortConstraints and don't want to send all records (without limit) through XML-RPC. Is there any reasonable solution or do I have to write my own grid component? -- View this message in context: http://www.nabble.com/Grid-component-and-available-rows-number-tp19964529p19964529.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Best regards, Renat Zubairov - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Grid component and available rows number
Renat Zubairov wrote:
Hello
You may have a look on the implementation of the GridDataSource for
Hibernate
http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-hibernate/src/main/java/org/apache/tapestry5/hibernate/HibernateGridDataSource.java?view=markup
BR
Renat
Not very helpful. I don't know Hibernate but as I understand there are two
methods used in this impl. of GridDataSource:
Integer result = (Integer) criteria.uniqueResult(); - which returns
number of rows
and
preparedResults = crit.list(); - which do the actual query.
As I mentioned in my first post, search engine which I use doesn't have
suchmethods. The only one I have is Query({query_params}) which returns
given portion of results and the total number of results.
I can perform Query in getAvailableRows(), but then I would have to send ALL
results through XML-RPC and limit them in prepare method - I don't think
it's a good idea...
regards,
Shymon
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Re: Grid component and available rows number
Hi Shymon,
If you don't want the pager to show up at all on the grid component, you
can set
pagerPosition=none
on the grid. This might prevent the row count from being generated at
all.
Andy
On Tue, 2008-10-14 at 00:50 -0700, shymon wrote:
Renat Zubairov wrote:
Hello
You may have a look on the implementation of the GridDataSource for
Hibernate
http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-hibernate/src/main/java/org/apache/tapestry5/hibernate/HibernateGridDataSource.java?view=markup
BR
Renat
Not very helpful. I don't know Hibernate but as I understand there are two
methods used in this impl. of GridDataSource:
Integer result = (Integer) criteria.uniqueResult(); - which returns
number of rows
and
preparedResults = crit.list(); - which do the actual query.
As I mentioned in my first post, search engine which I use doesn't have
suchmethods. The only one I have is Query({query_params}) which returns
given portion of results and the total number of results.
I can perform Query in getAvailableRows(), but then I would have to send ALL
results through XML-RPC and limit them in prepare method - I don't think
it's a good idea...
regards,
Shymon
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Re: Grid component and available rows number
Hi Shymon, The way I handle this is this: I use a DAO that I wrote as the source for my Grid. In a @BeginRender method on the page, I initialize the criteria in the DAO. Then, when the Grid calls prepare(), the DAO retrieves all matching rows from Hibernate (you could retrieve from XML-RPC), and the DAO stores that result set internally in the DAO. (Only the rows that match the criteria are returned). When the Grid calls getAllAVailableRows(), the DAO returns the count of rows in that result set. When the Grid calls GetRowValue(), I return one specific row from that result set. Andy On Tue, 2008-10-14 at 01:52 -0700, shymon wrote: Andy Huhn-3 wrote: Hi Shymon, If you don't want the pager to show up at all on the grid component, you can set pagerPosition=none on the grid. This might prevent the row count from being generated at all. Andy Uhmmm... you are kidding, right? :) Dou you think I should display all results on one page? :) Of course I need a pager. Maybe I could use Grid component w/o pager and create my own one, but id doesn't make much sense for me. Pager is 50% of why I want to use grid. :) Shymon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Grid component and available rows number
Andy Huhn-3 wrote: Hi Shymon, If you don't want the pager to show up at all on the grid component, you can set pagerPosition=none on the grid. This might prevent the row count from being generated at all. Andy Uhmmm... you are kidding, right? :) Dou you think I should display all results on one page? :) Of course I need a pager. Maybe I could use Grid component w/o pager and create my own one, but id doesn't make much sense for me. Pager is 50% of why I want to use grid. :) Shymon -- View this message in context: http://www.nabble.com/Grid-component-and-available-rows-number-tp19964529p19969457.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Grid component and available rows number
Em Tue, 14 Oct 2008 04:50:50 -0300, shymon [EMAIL PROTECTED]
escreveu:
As I mentioned in my first post, search engine which I use doesn't have
suchmethods. The only one I have is Query({query_params}) which returns
given portion of results and the total number of results.
I can perform Query in getAvailableRows(), but then I would have to send
ALL results through XML-RPC and limit them in prepare method - I don't
think
it's a good idea...
It is really not a good idea, but you have no other choice here, as your
search implementation (accessed through XML-RPC) does not support paged
queries. Therefore, implementing GridDataSource gives no advantage over
passing a List directly to Grid. At least you have the paged listing
interface. ;)
--
Thiago H. de Paula Figueiredo
Independent Java consultant, developer, and instructor
Consultor, desenvolvedor e instrutor em Java
http://www.arsmachina.com.br/thiago
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Grid component and available rows number
I wanted to use a grid component to display search results. So I tried to define a class which implements GridDataSource interface. Unfortunatelly getAvailableRecords() method is called by T5 before prepare(...) method. This doesn't suit me as I receive total record number with search results only. My search engine is accessed through XML-RPC and has a Query(...) method which performs the search. This method returns a dictionary (or hashtable) containing search results and some other info including total number of records matching given query. Of course I can trigger Query(...) method from getAvailableRecords() or even before, but I don't have information about indexFrom, indexTo and sortConstraints and don't want to send all records (without limit) through XML-RPC. Is there any reasonable solution or do I have to write my own grid component? -- View this message in context: http://www.nabble.com/Grid-component-and-available-rows-number-tp19964529p19964529.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
