problem with DataScroller and h:commandLink (reRender)

[raphael.martins]

Hi,
I get a problem when I try to rerender the rich:DataScroller and the rich:DataTAble.

Situation:

I have a h:commandButton that calls a search method. This method changes the DataTable content. After clicking in the button, the new content is rerendered in the rich:DataTable (ok), but the DataScroller doesn't change according to DataTable.
For example, I have 2 pages in my rich:DataTable and the after clicking, the return of method is 3 pages. The rich:dataScroller keeps 2 pages. In the second request, if I click again, the DataScroller changes correctly.

My commandButton has "<a4j:support event="onclick" reRender="DataTableID,DataScrollerID"""

[moldovan]

Why are you using <h:commandButton>-Tag? You don't need normal commandButton with aj4:support, use a4j:commandButton.

Try it with <a4j:commandButton action="#{...}" reRender="TableId, ScrollerId">

And for debugging: put a4j:log component into your page

[raphael.martins]

The reason is:

- When I use <a4j:commandButton> and the method doesn't have return the 'rerender' doesn't work. The table should be empty, but It keeps the old content.

- When I use <h:commandButton> with "<a4j:support>", it works.

[fmarwede]

Hmm...give us more infos please. Versions of used libraries and so on.

[raphael.martins]

Futher, with a4j:commandButton the same problem happens. I have just tested.

The rerender only works in second click.

Thanks.

[raphael.martins]

the versions are:

jsf1.2_04-api.jar
jsf1.2_04-impl.jar

richfaces-api-3.1.2.GA.jar
richfaces-impl-3.1.2.GA.jar
richfaces-ui-3.1.2.GA.jar

[fmarwede]

It would be very helpful a) to know your used versions and b) to look at a minimal code snippet where the problem appears. So we can test your code directly.

[fmarwede]

Ah sorry, I was to fast. So forget a) of the last post ;-)

[raphael.martins]

Ok, the code below is a simplification of my problem. (only relevant code)
If you test, you will see that the Scroller just rerenders in the second request.

Jsp

<h:form id="myTestForm">
 <h:inputText value="#{test.searchContent}" />
 <br />
 <h:commandButton value="Search" action="#{test.search}">
 <a4j:support event="onclick" reRender="myRichDataTable1,myDataScroller1" />
 </h:commandButton>
 <br />
 <a4j:outputPanel ajaxRendered="true" id="myAjaxOutputPanel1">
 <rich:datascroller ajaxSingle="false" id="myDataScroller1" for="myRichDataTable1" immediate="true" />
 <rich:dataTable rows="10" id="myRichDataTable1" var="myLocalList" value="#{test.listNames}">
 <f:facet name="header">
 <rich:columnGroup id="candidateLocalColumnGroup1">
 <rich:column>
 <h:outputText value="Name" />
 </rich:column>
 </rich:columnGroup>
 </f:facet>
 <rich:column>
 <h:outputText value="#{myLocalList.name}" />
 </rich:column>
 </rich:dataTable>
 </a4j:outputPanel>
</h:form>

ManagedBean

public List getListNames()
 {
 Collection myTestList = new ArrayList();
 if (searchContent != null)
 {
 if ( searchContent.equals( "a" ) )
 {
 for ( int i = 0; i < 5; i++ )
 {
 TestDTO testDTO = new TestDTO();
 testDTO.setName( "a" + i );
 myTestList.add( testDTO );
 }
 } else if ( searchContent.equals( "b" ) )
 {
 for ( int i = 0; i < 15; i++ )
 {
 TestDTO testDTO = new TestDTO();
 testDTO.setName( "b" + i );
 myTestList.add( testDTO );
 }
 } else if ( searchContent.equals( "c" ) )
 {
 for ( int i = 0; i < 25; i++ )
 {
 TestDTO testDTO = new TestDTO();
 testDTO.setName( "c" + i );
 myTestList.add( testDTO );
 }
 } else
 {
 myTestList = null;
 }
 }
 return (List) myTestList;
 }

 public String search()
 {
 //some validations
 getListNames();
 //workarround to set DataTable page = 1
 return null;
 }

[ilya_shaikovsky]

<rich:dataTable value="#{capitalsBean.capitals}" var="cap" rows="8" rowKeyVar="rowKey" id="table">
 <rich:column>
 <h:outputText value="#{cap.name}"> </h:outputText>
 </rich:column>
 <f:facet name="footer">
 <rich:datascroller id="scroller"/>
 </f:facet>
 </rich:dataTable>
 <a4j:commandButton value="add capital" action="#{capitalsBean.addEmptyCapital}" reRender="table, scroller"></a4j:commandButton>

This code just worked for me.
B.t.w. I use 3.1.3 SNAPSHOTS.JSF 1.2 and facelets 1.1.14


B.t.w. Again I need to mention.. It's more usefull to understand the usage way before using the framework.

1) You should not use h:command* with support inside. Or you just need in duplicated submits?? But nobody will check the result because the usage is wrong.
2) You have ajaxRendered Panel and use reRender. Isn't a mistake but after such constructions I'll ask you to read docs again.

[raphael.martins]

I understand and I thank you for the post.

The ajaxRendered Panel was used because I was trying to figure out my issue. I know its'nt is 100% correct.

My problem was resolved when I put the datascroller inside the dataTable as a footer. The dataScroller had a tag 'for' with the dataTableID and reRender dind't work. I don't know why yet.

Now, it's ok.

Thanks.

[ilya_shaikovsky]

moved scroller from footer above and below the table. Still works... :/