Re: Tag dataTable and dataScroller usage

[Thomas Spiegl]

hi catalin,

can you send me your backend bean too?

Catalin Kormos schrieb:

Hi Thomas,

Thanks for you interest.

Here is the jsf code for the table:
<x:dataTable id="plannedProbes"
value="#{plannedProbes.tableModel.tableData}"
rows="#{plannedProbes.tableModel.preferences.rowsPerPage}"

first="#{plannedProbes.tableModel.preferences.pageStartIndex}"

var="plannedProbe" rowIndexVar="plannedProbesRowIndex" rowCountVar="plannedProbesRowCount" renderedIfEmpty="false" preserveDataModel="false"
preserveSort="true"
sortColumn="#{plannedProbes.tableModel.comparator.columnName}"
sortAscending="#{plannedProbes.tableModel.comparator.ascent}"
rowClasses="whiteRow,grayRow"
width="100%">

   <h:column id="probeNo">
        ...
   </h:column>
</x:dataTable>

The code for the data scroller:
<x:dataScroller for="plannedProbes"
fastStep="#{plannedProbes.tableModel.preferences.rowsPerPage}"
pageCountVar="pageCount"
pageIndexVar="pageIndex"
paginator="true"
paginatorMaxPages="#{plannedProbes.tableModel.preferences.paginatorMaxPages}"

styleClass="alignCenter"
style="text:align:center;"
paginatorColumnStyle="font-family:

Arial,Helvetica,Sans-Serif;font-size:11px;font-weight:normal;color:#000000;text-align:center;"
paginatorActiveColumnStyle="font-family:

Arial,Helvetica,Sans-Serif;font-size:11px;font-weight:bold;color:#000000;text-align:center;"
paginatorTableStyle="width:100%;text-align:center;"
paginatorTableClass="alignCenter100Procent">
<f:facet name="first" >
<h:graphicImage
url="../images/datascroller/arrow-first.jpg"
border="0" />
</f:facet>
<f:facet name="last">
<h:graphicImage
url="../images/datascroller/arrow-last.jpg" border="0"
/>
</f:facet>
<f:facet name="previous">
<h:graphicImage
url="../images/datascroller/arrow-previous.jpg"
border="0" />
</f:facet>
<f:facet name="next">
<h:graphicImage
url="../images/datascroller/arrow-next.jpg" border="0"
/>
</f:facet>
<f:facet name="fastforward">
<h:graphicImage
url="../images/datascroller/arrow-ff.jpg" border="0"
/>
</f:facet>
<f:facet name="fastrewind">
<h:graphicImage
url="../images/datascroller/arrow-fr.jpg" border="0"
/>
</f:facet>
</x:dataScroller>

Every value binding is made to a backend bean that has
setter and getter for it. Here is the code that

i use to get an attribute value from the request or a
parameter value from the request; both methods

return null for getting the value for "pageCount" or
"pageIndex":

public static Object getAttributeFromRequest(Object
key)
{
   Object object = null;
   Map requestMap =
FacesContext.getCurrentInstance().getExternalContext().getRequestMap();
   object = requestMap.get(key);
   return object;
}

public static String getParameterFromRequest(String
parameterName)
{
String parameterValue = null;
Map requestParameterMap =

FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
   Iterator iterator =
requestParameterMap.keySet().iterator();

while(iterator.hasNext())
{
String key = (String)iterator.next();
if(key.indexOf(parameterName) != -1 )
{
parameterValue =
(String)requestParameterMap.get(key);
break;
}
}
return parameterValue;
}
The code invoking those methods, in my backend bean
contructor (every call displayes "[null]"):
logger.debug("rowIndexVar=["+BackendBeanCommons.getParameterFromRequest("pageIndex")+"]");


logger.debug("rowCount=["+BackendBeanCommons.getParameterFromRequest("rowCount")+"]");
logger.debug("rowIndexVarAttr=["+BackendBeanCommons.getAttributeFromRequest("pageIndex")+"]");
logger.debug("rowCountAttr=["+BackendBeanCommons.getAttributeFromRequest("pageCount")+"]");

Any ideeas?

Regards,

Catalin

--- Thomas Spiegl <[EMAIL PROTECTED]> wrote:

hi Catalin,

can you send me a jsp-example?

thomas

Catalin Kormos schrieb:

Hi,

I'm using myfaces-1.0.7, and i'm trying to

implement a

table model backend bean to be able to control the
displayed page for table. The first time the table

is

rendered i can set the "first" attribute to a

specific

row index so it displayes the page content i want;

but

then when i change de current page using the data
scroller, this does't change the "first" attribute
value of the table; so it can't find out which page
was selected by the user...there are some

attributes

for dataScroller tag which seem to be very useful,
like the "pageIndexVar" attribute, but i have

tryied

using it, and i always get a null value for it. Is
there someone else who tryied using the value of
those attributes? Are these attributes used to

specify

between requests which page was selected by the

user?

how can these "var" attributes used?

More exactly, is there a preferred way to control

the

selected page index of a data table from a backend
bean?

Thanks in advance,

Regards,

Catalin



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