Help with Tomahawk DataTable Sort?

[Tom Butler <to...@adelphia.net>]

Can someone please help me to understand how to configure or code a column
sort for a Tomahawk datatable?  Specifically, I'm not clear on how or what
sort method is called?  Do the Tomahawk components take care of the sort for
me, or do I need to code the sort myself (and if so where)?

 

I think I have the JSP coded correctly:

<t:dataTable id="data" styleClass="scrollerTable"

var="providers" 

value="#{searchproviders_bean.arrlist_providers}" 

preserveDataModel="false" 

rows="20"

sortColumn="#{searchproviders_bean.sortcolumn}"

sortAscending="#{searchproviders_bean.sortascending}"

preserveSort="true">                                  

 


<h:column>

<f:facet name="header">

      <t:commandSortHeader columnName="id" arrow="true" immediate="false">

            h:outputText value="#{messages['sort_id']}" />

      </t:commandSortHeader>

</f:facet>

<h:outputText value="#{providers.id}" />

</h:column>

<h:column>

<f:facet name="header">

      <t:commandSortHeader columnName="category" arrow="true"
immediate="false">

            <h:outputText value="#{messages['sort_category']}" />

      </t:commandSortHeader>

</f:facet>

<h:outputText value="#{providers.category}" />

</h:column>

</t:dataTable>

 

'searchproviders_bean'  is the backing bean, and 'arrlist_providers' is an
ArrayList.  The ArrayList is initially sorted when it is retrieved from the
database.  After the data is retrieved, I disconnect from the database.  The
data in the ArrayList will be read-only (will contain search results list -
the data is not updateable.)   When the data is displayed to the user, I
want them to be able to sort the data by clicking on the column headings.  

 

I have also added the 'sortcolumn' and 'sortascending' properties to the
backing bean as strings with the appropriate getter/setter methods:

 

public class searchproviders_bean {

    private ArrayList arrlist_providers;

    private String sortcol;

    private String sortascending;

...

 

 

The part where I am confused is how to implement the sort method.  I know
that the ArrayList gets 'wrapped' by a DataModel object (though I only
understand this at a high-level), but I'm not sure how to configure or code
the sort?  Does the Tomahawk DataModel implement the sort or do I need to
code the sort?  If I need to code the sort, can someone please help me to
understand where to implement this method and provide any helpful code
examples?

 

BTW, currently, the datatable is displaying, but when I click on the column
headings, the data does not sort (but the arrows on the column header change
directions.)  Also, I do have a datascroller connected to the datatable that
is working correctly:

 

 

Thanks

Tom

 

 

 

Re: Help with Tomahawk DataTable Sort?

[Sean Schofield <se...@gmail.com>]

Please post these types of questions to the user list.  The dev list
is for discussing changes to the code base and new proposals.

Regards,

sean

On 12/27/05, Tom Butler <to...@adelphia.net> wrote:
>
>
>
> Can someone please help me to understand how to configure or code a column
> sort for a Tomahawk datatable?  Specifically, I'm not clear on how or what
> sort method is called?  Do the Tomahawk components take care of the sort for
> me, or do I need to code the sort myself (and if so where)?
>
>
>
> I think I have the JSP coded correctly:
>
> <t:dataTable id="data" styleClass="scrollerTable"
>
> var="providers"
>
> value="#{searchproviders_bean.arrlist_providers}"
>
> preserveDataModel="false"
>
> rows="20"
>
> sortColumn="#{searchproviders_bean.sortcolumn}"
>
> sortAscending="#{searchproviders_bean.sortascending}"
>
> preserveSort="true">
>
>
>
>
> <h:column>
>
> <f:facet name="header">
>
>       <t:commandSortHeader columnName="id" arrow="true" immediate="false">
>
>             h:outputText value="#{messages['sort_id']}" />
>
>       </t:commandSortHeader>
>
> </f:facet>
>
> <h:outputText value="#{providers.id}" />
>
> </h:column>
>
> <h:column>
>
> <f:facet name="header">
>
>       <t:commandSortHeader columnName="category" arrow="true"
> immediate="false">
>
>             <h:outputText value="#{messages['sort_category']}" />
>
>       </t:commandSortHeader>
>
> </f:facet>
>
> <h:outputText value="#{providers.category}" />
>
> </h:column>
>
> </t:dataTable>
>
>
>
> 'searchproviders_bean'  is the backing bean, and 'arrlist_providers' is an
> ArrayList.  The ArrayList is initially sorted when it is retrieved from the
> database.  After the data is retrieved, I disconnect from the database.  The
> data in the ArrayList will be read-only (will contain search results list –
> the data is not updateable.)   When the data is displayed to the user, I
> want them to be able to sort the data by clicking on the column headings.
>
>
>
> I have also added the 'sortcolumn' and 'sortascending' properties to the
> backing bean as strings with the appropriate getter/setter methods:
>
>
>
> public class searchproviders_bean {
>
>     private ArrayList arrlist_providers;
>
>     private String sortcol;
>
>     private String sortascending;
>
> …..
>
>
>
>
>
> The part where I am confused is how to implement the sort method.  I know
> that the ArrayList gets 'wrapped' by a DataModel object (though I only
> understand this at a high-level), but I'm not sure how to configure or code
> the sort?  Does the Tomahawk DataModel implement the sort or do I need to
> code the sort?  If I need to code the sort, can someone please help me to
> understand where to implement this method and provide any helpful code
> examples?
>
>
>
> BTW, currently, the datatable is displaying, but when I click on the column
> headings, the data does not sort (but the arrows on the column header change
> directions.)  Also, I do have a datascroller connected to the datatable that
> is working correctly:
>
>
>
>
>
> Thanks
>
> Tom
>
>
>
>
>
>