Datatable&commandLink

Dear guys,
I have a datatable, it lists 10 items per page, and it also contains two commandLinks to edit&del related item, but now, in the first page it works very good, but when I navigate to the next page, the commandLink cann't work.
Any one can help me, My JSF implementation is MyFaces1.0.

Invoke a GET request instead of POST request.
Yes, it is cumbersome to do so in JSF, but it is possible.

Similar Messages

Using commandLinks and commandButtons in dataTables

I'm trying to create a page that displays data from a database and allows you to edit individual rows by clicking on either a commandButton or a commandLink within a dataTable that then takes you to another page where you can edit that particular row of the table.
When using a commandButton, it works perfectly for all but the last entry in the table. But when the button in the last line is clicked, nothing happens at all, it does not seem to call the action listener and it does not perform the navigation based on the action. But with all the previous buttons it calls the actionListener and navigates perfectly. Can anyone tell me why this would be? The code is as follows:
<h:dataTable value="#{Categories.categories}" var="category" >
<h:column>
<f:facet name="header"><h:outputText value="#{msgs.deptColumnHead}"/></f:facet>
<h:outputText value="#{category.departmentName}"/>
</h:column>
<h:column>
<f:facet name="header"><h:outputText value="#{msgs.categoriesColumnHead}"/></f:facet>
<h:outputText value="#{category.categoriesList}"/>
</h:column>
<h:column>
<h:form>
<h:inputHidden id="dept" value="#{category.departmentId}"/>
<h:commandButton id="editButton" action="EditCat" actionListener="#{Categories.editListener}" value="{msgs.editSelectedButtonText}"/>
</h:form>
</h:column>
</h:dataTable>
When using commandLinks, only the first one works (of 4). For the other 3 the page goes into error when the link is clicked and it complains that 'document.forms._id2:3:_id10._id2:3:_id10:idcl is null or not an object'. If anyone could tell me what is wrong with my code, i would be most appreciative.
<h:dataTable value="#{Categories.categories}" var="category" >
<h:column>
<f:facet name="header"><h:outputText value="#{msgs.deptColumnHead}"/></f:facet>
<h:outputText value="#{category.departmentName}"/>
</h:column>
<h:column>
<f:facet name="header"><h:outputText value="#{msgs.categoriesColumnHead}"/></f:facet>
<h:outputText value="#{category.categoriesList}"/>
</h:column>
<h:column>
<h:form>
<h:inputHidden id="dept" value="#{category.departmentId}"/>
<h:commandLink action="EditCat" actionListener="#{Categories.editListener}">
<h:outputText value="#{msgs.editSelectedButtonText}"/>
</h:commandLink>
</h:form>
</h:column>
</h:dataTable>

1) I have had very odd behavior in JSF when ALL of the
JSF elements on a page do not have an id attribute. If
you do not assign an id then JSF will manufacture a
unique id on the flag. Sometimes the unique id wasn't
so unique and there were errors like you are seeing or
just odd behavior on the form, buttons not generating
events, or incorrect rendering, etc.
By 'ALL' I mean output text, columns, anything that
accepts an id attribute. Don't trust the code to
generate an id correctly for you.Just want it known that while this may be necessary in the short-term to work around bugs, this is definitely not the intent of the EG! We don't want people getting in the habit of
Also note that this behavior is not consistent
sometimes it would not appear on a page unless the
page was updated and more controls added to it.Ah, well that is a known issue; while developing a page, the Sun RI can have problems if you change a page's contents between two submissions. (It doesn't pick up that the .jsp has changed.) I'd recommend:
- Use client-side state saving.
- Make sure you're making a new request for a page (not re-POST-ing anything!) when the page's contents have changed.
If you follow both of those rules, then you should generally be able to get away without explicit IDs everywhere as you actively develop your page.
Explicit IDs are required if you're inside <c:if>; this is known and documented.
2) try putting the hidden input control in it's own
columnNo, that'll give you a bonus set of <td> elements, which isn't what you want.
-- Adam Winer (EG member)

CommandLinks and CommandButtons in Datatable do not work

I have read the threads about this issue and am aware of the fact that there is a problem, if the backing bean is in request scope. However, my backing bean is in session scope and it still does not work - my action methods are never called. What's more, I have another backing bean in session scope, where it works perfectly and I cannot see any difference between them.
Here's the code, my backing bean is dms:
<h:form rendered="#{dms.documents.rowCount > 0}">
<h:dataTable rowClasses="..." headerClass="..." value="#{dms.documents}"
columnClasses="..." var="item" border="1" cellpadding="2" cellspacing="0">
<h:column>
<f:facet name="header">
<h:outputText>DocName</h:outputText>
</f:facet>
<h:commandLink action="#{dms.test}" value="#{item.docName}"/>
</h:column>
<h:column>
<f:facet name="header"/>
<h:commandButton id="foo" value="View" action="#{dms.test}"/>
</h:column>
</h:dataTable>
<h:commandLink action="#{dms.test}" value="Clickme"/>
</h:form>
Here is the code in the backing bean:
public String test() {
System.out.println("Hooray");
return "mainPage";
And this in faces-config.xml:
<managed-bean>
<managed-bean-name>dms</managed-bean-name>
<managed-bean-class>com.mypackage.DmsController</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
Only the last link, the one outside the datatable and titled "Clickme", works. I can see "Hooray" in the logfile and am redirected to the main page. If I click any of the links or buttons in the datatable, nothing is written to the log and the same page is loaded again, but only the static content is displayed, i.e. no JSF tags are evaluated, they are just dropped. There are, however, a few hidden input fields called javax.faces.ViewState, which I don't know where they are coming from.
As I said, I have another backing bean in session scope, which is modelled exactly like that and it works there. Maybe JSF apps are supposed to have only one controller?
Many thanks in advance for any pointers,
Ulrich
Edit: It doesn't change anything if I put the backing bean in application scope. I did have the same problem before with my other backing bean, but could solve it there by putting it from request scope to session scope.

<h:dataTable value="#{dms.documents}">How do you load this list? This list should not be null during the INVOKE_APPLICATION phase.
Try stubbing the List right in the getDocuments() method and see if it works.

One reason why commandLink doesn't work in dataTable

Ok, so I think I've got an explanation why commandLink doesn't work in dataTable when the model bean is request scoped. Maybe somebody can tell me if I'm wrong.
I have a model bean that generates table rows based on some input criteria (request parameters).
So, we validate the inputs, apply them to the bean and render the page. Once the inputs have been applied to the bean, a request for table rows returns rows, no problem.
However, we put a commandLink in each row, so we can expand the details. Maybe we even get smart and repeat the input row-generating criteria as a hidden field in the page.
Unfortunately, when the user hits the commandLink, the list page simply refreshes, maybe even w/out table rows. The user doesn't get the details page as expected.
Why not?
Because: in the DECODE phase (even before validation and before "immediate" values have had their valueChangeListeners called), we ask the model bean for the table rows, so we can decode the commandLinks. Unfortunately, in "decode" phase, the request-scoped model bean has not had its row-generating criteria updated (that happens in the "update model" normally, or at the END of the decode phase if we got cute by (1) setting the "immediate" attribute on the row-generating criteria to "true" AND (2) set a valueChangeListener to allow us to update the model bean early. The END of the decode phase isn't good enough -- in the middle of that phase, when we're attempting to deocde commandLinks, the model bean has no citeria, so there's no row data. No row data means no iteration over commandLinks to decode them and queue ActionEvents. So, we march through the rest of the phases, process no events, and return to the screen of origin (the list screen) with no errors.
So, what's the solution?
One solution is to make the model bean session-scoped. Fine, maybe we can store a tiny bit of data in it (the search criteria), so it's not such a memory drag to have it live in the session forever. How do we get that data in? A managed property in faces-config.xml with value #{param.PARENT_KEY} won't work because it's assigning request-scoped data to a session-scoped holder. JBoss balks, and rightly so. Do we write code in the model bean that pulls the request parameter out of thin air? (FacesContext.getExternalContext()....) I don't really like to code the name of a specific http request parameter into the bean, I think it's the job of the JSP or faces-config.xml to achieve that binding (request parameter to model propery). Plus, I'd be sad to introduce a dependency on Faces in what was previously just a bean.
Is there a better way?
In my particular situation, we're grafting some Faces pages onto an already-existing non-Faces application. I don't get the luxury of presenting the user an input field and binding it to a bean. All I've got to work with is a request parameter.
Hmm, I guess I just answered my own question. if all I've got to work with is a request parameter, some ugliness is inevitable, I guess.
I guess the best fix is to cheat and have the bean constructor look for a request parameter. If it finds it, it initializes the criteria field (which, in my case, is the key of an object that has a bunch of associated objects (the rows data), but could be more-general d/b search criteria).
(I looked at the "repeater" example code in the RI, but it basically statically-generates its data and then uses 100% Faces (of course) to manage the paging (where "page number" is essentially the "criteria").
Comments? Did I miss something obvious?
John.

...or I could just break down and do the thing I was hoping to avoid (outputLink instead of commandLink):
<h:outputLink value="/faces/Detail.jsp">
<f:param name="PARENT_KEY" value="#{bean.parentKey}"/>
<h:outputText value="#{bean.label}"/>
</h:outputLink>It's still a "hardcoded" parameter name, but at least the binding is in the JSP and faces-config.xml, not the bean Java code.

How to remember the value in h:commandLink inside a h:datatable

I have a h:dataTable storing header information, there is a column "refno" which is a h:commandlink (or h:outputlink) so user can select that column and jump to the detail page.
My problem is how to remember the refno so I can use it in the detail page?
a simplified code is as follows:
<html>
    <body>
          <f:view>
              <h:form id="select">
              <h:dataTable value="#{dataTableBean.arr}" var="loc">
                  <h:column>
                      <f:facet name="header" >
                          <h:outputText value="Frameworks"/>
                      </f:facet>
                      <h:outputLink value="openedTenderDetail.jsf"> // or h:commandLink
                              <h:outputText value="#{loc.refNo}" />
                      </h:outputLink>
                 </h:column>
             </h:dataTable>
          </f:view>
    </body>
</html>

hello
u can use <f:param to remeber value and go to next page accordingly
in detail
use commandlink and in action get value of <f:param and then navigate to the desired page according to the param value
regards
Shakeel Abbas

CommandLink in dataTable rendered method is called multiple times

I have a dataTable in which one of the columns contains a commandLink. The commandLink has the "rendered" option bound to a backing bean method. When the page is submitted, the backing bean method gets called 8 times for each row in the table if the value returned is "true" and 3 times per row if the value returned is "false". Since the page is designed to "navigate" back to itself, I can understand it getting called more than once, but 8 times??? What's up with that?

Because you have a bug in your code.
If you want further help post a Short, Self Contained, Compilable and Executable, Example Program ([url http://homepage1.nifty.com/algafield/sscce.html]SSCCE) that demonstrates the problem.
And don't forget to use [url http://forum.java.sun.com/help.jspa?sec=formatting]code formatting when posting code.

h:commandLink inside t:dataTable

Hi ,
I am using Tomahawk datatable and inside this datatable there is JSF HTML commandlink.
when clicking the record in a datatable my action method is executing for multiple number of times. If there are four results present in datatable my action method is executing for four times. Is there any way to stop multiple calls and should execute only once.
In JSP
<t:dataTable id="searchProcCodeResults"     value="#{SearchRatesDataBean.searchResultList}"
          var="searchDetails" rows="10" >
<h:column id="procCol">
     <h:commandLink id="edit"     action="#{SearchRateProcedureCodeControllerBean.getRatePCProvSpeDetails}">
          <h:outputText id="valueProc" value="#{searchDetails.procCode}" />
               <f:param name="procedureCode" value="#{searchDetails.procedureCode}" />
               <f:param name="providerSpecialtyCode" value="#{searchDetails.providerSpecialtyCode}" />
               <f:param name="lobcode" value="#{searchDetails.lobCode}" />
     </h:commandLink>
</h:column>
</t:dataTable>

take a HtmlDataTable refrece varible in your backing bean and create setter and getter method corresponding to it ,then bind this data table using the binding attibute in your jsp then you can can get the particular row data on calling getRowData() method on HtmlDataTable object and cast it to your's receiving object.

CommandLinks within Datatable, browser history

When I click one of many commandlinks in a datatable, all the links are showing as visited.
Within each row of a datatable we have commandlinks that all point to the same page. That page uses the selected row to retrieve data based on specific fields within that selected row. The problem is that once we've clicked any of the commandlinks, they all now show as a visited link. This is because the href="#" for all of the links.
I tried creating a custom component that performs the same onclick( ) functionality as a commandlink but appends any params as querystring parameters. This would make the href unique. This doesn't work because the onclick( ) event contains "return: false;" which apparently stops processing before the link is added to the browser history. Ideas?
Message was edited by:
jha42

Using the CSS to make the visited and unvisited links indistinguishable is a good idea. Unfortunately, our customers aren't content with that solution. They'd strongly prefer to be able to identify the visited links. Any other ideas?

DataTable with commandLinks - How do I know which one I clicked?

So, imagine I have a dataTable which returns rows from my database (any SELECT * FROM TABLE) and I want to, for example, delete the one object from row N, how do I know, if I put <h:commandLinks> after each row, which row I clicked?
It's been really hard to do such a simple thing in JSF for me. Help!

You'd better use selectBooleanCheckbox to delete the selected row rather than sommandLink. This way you'll be able to select more than one row and to delete all selected rows at the same time.
Hope this helps!
Ragards,
Mariana Getova

AJAX: Datatable sorting using a4j:commandLink

Hi,
I have been using h:commandLink to sort data-table and display UP or DOWN arrow in JSF. But, when i moved to ajax-based, a4j:commandLink to sort by data-table, sort is not happening at all.
I am attaching code for a single <h:column>
<h:column id="c1">
<f:facet name="header">
<a4j:commandLink id="i21"
action="#{bean.sortByDate}"
reRender="suspList1">
<h:outputText id="i22" value="#{msg.date}" />
<%
if(objbean != null && objbean.isSortColumn(Constants.SORT_BY_DATE)) {
if(objbean != null && objbean.isListAscending()) {
%>
<f:verbatim>
<img id="image1" border="0" src="img/arrowup.gif">
</img>
</f:verbatim>
<%
} else {
%>
<f:verbatim>
<img id="image2" border="0" src="img/arrowdown.gif">
</img>
</f:verbatim>
<%
%>
</a4j:commandLink>
</f:facet>
<h:outputText id="i23" value="#{Item.runDate}" styleClass="left">
<f:convertDateTime pattern="MM/dd/yyyy" />
</h:outputText>
</h:column>
can you please help?
Thanks

SureshScreen wrote:
IMMTLY ASAP.After reading this my motivation to give an helpful answer went from 60% to 0%.
[Please ask questions the smart way|http://www.catb.org/~esr/faqs/smart-questions.html].

Values from columns of datatable...

Hi guys,
i'm working with my jsf application to create a datatable.
It works well,but now i've added a commandlink button to dynamically adding a new column(i use this datatable for input data,each row is an experiment).
It works fine,column is correctly added.
At the end of each row of my datatable i've a submit button to send values of the row into db.
My question is:
My datatable has 5 fixed fields and other dinamic fields that user can add with button. My 5 fixed values have to go into a table(and it works) and i want that dynamic values(that use has added) go into another table,each one as a different row.
Example
usa italy french england japan rome tokyo
i want usa italy french englan japan go into a table(as a row) and rome tokio goes into another table
rome
tokio(different rows).
How can i do it?
My problem is i'm not able to binding the dynamic input fields to bean....can you help me?
Here is my class
public class BiosamplesTable {
     private List biosamples= new ArrayList();
     private HtmlDataTable biosampleDataTable;
private int autokey2;
     private Biosample biosampleItem;
     private int nrows;
     private DataModel mColumns;
     private int load=0;
     private String columnLabel;
     public HtmlDataTable getBiosampleDataTable() {
          return biosampleDataTable;
     public void setBiosampleDataTable(HtmlDataTable biosampleDataTable) {
          this.biosampleDataTable = biosampleDataTable;
     public Biosample getBiosampleItem() {
          return biosampleItem;
     public void setBiosampleItem(Biosample biosampleItem) {
          this.biosampleItem = biosampleItem;
     public List getBiosamples() throws Exception {
          loadBiosamples();
          // Reload after every request.
          return biosamples;
     public void setBiosamples(List biosamples) {
          this.biosamples = biosamples;
     public void loadBiosamples() throws Exception {
          if (load==0){
          for (int i = 0; i < nrows; i++) {
               Biosample biosample = new Biosample();
               biosamples.add(biosample);
               setBiosamples(biosamples);
               load=1;
          else
               setBiosamples(biosamples);
     public int getNrows() {
          return nrows;
     public void setNrows(int nrows) {
          this.nrows = nrows;
     public DataModel getColumnDataModel()
         if (mColumns == null)
           String[] result = new String[]{};//sono le colonne di partenza,in questo caso 1!!!
           mColumns = new ListDataModel(new ArrayList(Arrays.asList(result)));
         return mColumns;
     public void addColumn(ActionEvent e)
         if(columnLabel!=null);//metter l'if
           List columns = (List) getColumnDataModel().getWrappedData();
           columns.add(columnLabel);
     public String getColumnLabel(){
          return columnLabel;
     public void setColumnLabel(String columnLabel){
          this.columnLabel=columnLabel;
}and this is my jsp page
<t:dataTable
    value="#{biosamplesTable.biosamples}"
    var="biosampleItem"
     binding="#{biosamplesTable.biosampleDataTable}" border="3" bgcolor="pink" >
    <h:column >
        <f:facet name="header">
            <h:outputText value="Organism"/>
        </f:facet>
       <h:selectOneMenu value="#{biosampleItem.organism}">
            <f:selectItems value="#{biosample.selectOrganism}"/>
       </h:selectOneMenu>
    </h:column>
    <h:column>
        <f:facet name="header">
            <h:outputText value="Treatment Protocol" />
        </f:facet>
        <h:inputText value="#{biosampleItem.treatmentProtocol}" />
    </h:column>
    <h:column >
        <f:facet name="header">
            <h:outputText value="Extraction Method" />
        </f:facet>
        <h:inputText value="#{biosampleItem.extractionMethod}" />
    </h:column>
    <h:column >
        <f:facet name="header">
            <h:outputText value="Label"/>
            </f:facet>
        <h:inputText value="#{biosampleItem.label}" />
    </h:column>
    <h:column>
        <f:facet name="header">
            <h:outputText value="Hybridation" /></f:facet>
        <h:inputText value="#{biosampleItem.hybridation}" />
    </h:column>
    <h:column>
        <f:facet name="header">
            <h:outputText value="Amplification" /></f:facet>
        <h:inputText value="#{biosampleItem.amplification}" />
    </h:column>
    <t:columns value="#{biosamplesTable.columnDataModel}" var="column" >
     <f:facet name="header">
    <h:panelGroup>
    <h:outputText value="#{column}" />
    <h:commandLink actionListener="#{biosamplesTable.removeColumn}">
    <h:outputText value="Elimina"/>
    </h:commandLink>
    </h:panelGroup>
    </f:facet>
         <h:inputText value="#{biosampleProperties.value}" />
    </t:columns>
    <h:column>
        <f:facet name="header">
            <h:outputText value="Actions" />
        </f:facet>
        <h:commandLink
        value="Invia dati biosample" actionListener="#{biosamplesTable.editBiosample}" id="editBiosample">
        </h:commandLink>
    </h:column>
    </t:dataTable>     i want the values of each added column goes as different row into a biosampleProperties table....
Thanks..

u can't achieve this with DataTable u need tu use JSTL ...exactly the
C-Tag
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

Problem with selectOneMenu in Datatable

Hi
I have the following datatable that binds correctly to a set of Game objects.
I need to have a dropdown with the numbers 1 to 10 as items which is bound to each dataItem's newRating field.
However there is some problem with the dropdown that i can't figure out. The datatable stops rendering when it hits the first dropdown.
At the moment,
The new rating field in the Game class is of type SelectItem with the appropriate get and set methods.
Could anyone please point out what I'm doing wrong
Thanks.
Here is the relevant part in Home.jsp:
                                          <h:dataTable binding="#{Home.newGamesTable}" id="newGamesTable" value="#{Home.newGames}" var="dataItem">
                                                            <h:column>
                                                                <f:facet name="header">
                                                                    <h:outputText value=""/>
                                                                </f:facet>
                                                                <h:panelGroup layout="block" styleClass="new_game_main">
                                                                    <h:outputText styleClass="new_game_title" value="#{dataItem.title}"/>
                                                                    <h:outputText escape="false" styleClass="new_game_label" value="Date added: "/>
                                                                    <h:outputText styleClass="new_game_data" value="#{dataItem.dateString}"/>
                                                                    <h:outputText escape="false" styleClass="new_game_label" value="Average Rating:"/>
                                                                    <h:outputText styleClass="new_game_data" value="#{dataItem.rating}"/>
                                                                    <h:outputText styleClass="new_game_label" value="Uploaded by:"/>
                                                                    <h:outputText styleClass="new_game_data" value="#{dataItem.userName}"/>
                                                                    <h:commandLink styleClass="new_game_label" value="Play Now!"/>
                                                                    <h:selectOneMenu styleClass="new_game_rating" value="#{dataItem.newRating}">
                                                                        <f:selectItems value="#{ratingItems}" />
                                                                    </h:selectOneMenu>
                                                                    <h:commandLink action="#{Home.rateNewGame}" styleClass="message_link" value="Rate"/>
                                                                </h:panelGroup>
                                                            </h:column>
                                                        </h:dataTable>and Home.java
private List<SelectItem> ratingItems = null;
     public List<SelectItem> getRatingItems()
         if (ratingItems == null)
             ratingItems = new ArrayList<SelectItem>();
             for (int i = 1; i <= 10; i++)
                 SelectItem item = new SelectItem();
                 item.setValue(Integer.valueOf(i));
                 ratingItems.add(item);
         return ratingItems;
     public void setRatingItems(List<SelectItem> items)
         ratingItems = items;
    private List<Game> newGames = null;
    private boolean hasNewGames;
    public List<Game> getNewGames()
        if (newGames ==null)
            newGames = DataFactory.getNewGames();
        hasNewGames = !newGames.isEmpty();
        return newGames;
    }

What do you mean by stops rendering? Can you paste the relevant portion of the output (from view source in the browser).

DataTable Exception: Invalid operation for the current cursor position

I have a JSF application that lists rows from a view in a SQL Server database. I have set up a commandLinks in an extra columns.
The data is displayed properly, but when I select one of the commandLinks I get the "Invalid operation for the current cursor position" exception.
Here's the source
Domain.jsp
<?xml version="1.0" encoding="UTF-8"?>
<jsp:root version="1.2" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:jsp="http://java.sun.com/JSP/Page">
    <jsp:directive.page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"/>
    <f:view>
        <html lang="en-US" xml:lang="en-US">
            <head>
                <meta content="no-cache" http-equiv="Cache-Control"/>
                <meta content="no-cache" http-equiv="Pragma"/>
                <title>Page1 Title</title>
                <link href="resources/stylesheet.css" rel="stylesheet" type="text/css"/>
            </head>
            <body style="-rave-layout: grid">
                <h:form binding="#{Domains.form1}" id="form1">
                    <h:dataTable binding="#{Domains.dataTable1}" headerClass="list-header" id="dataTable1" rowClasses="list-row-even,list-row-odd"
                        value="#{Domains.dataTable1Model}" var="currentRow">
                        <h:column binding="#{Domains.column9}" id="column9">
                            <h:selectBooleanCheckbox binding="#{Domains.checkbox2}" id="checkbox2"/>
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText9}" id="outputText9" value="Select"/>
                            </f:facet>
                        </h:column>
                        <h:column binding="#{Domains.column10}" id="column10">
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText4}" id="outputText4" value="Name"/>
                            </f:facet>
                            <h:commandLink action="#{Domains.groupList}" binding="#{Domains.linkAction1}" id="linkAction1">
                                <h:graphicImage binding="#{Domains.image1}" id="image1" url="resources/images/domain16.gif" value="resources/images/domain16.gif"/>
                                <h:outputText binding="#{Domains.linkAction1Text}" id="linkAction1Text" value="#{currentRow['name']}"/>
                            </h:commandLink>
                        </h:column>
                        <h:column binding="#{Domains.column3}" id="column3">
                            <h:outputText binding="#{Domains.outputText5}" id="outputText5" value="#{currentRow['description']}"/>
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText6}" id="outputText6" value="Description"/>
                            </f:facet>
                        </h:column>
                        <h:column binding="#{Domains.column4}" id="column4">
                            <h:selectBooleanCheckbox binding="#{Domains.checkbox1}" id="checkbox1" value="#{Domains.domainviewRowSet.currentRow['enabled']}==1"/>
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText8}" id="outputText8" value="Enabled"/>
                            </f:facet>
                        </h:column>
                        <h:column binding="#{Domains.column7}" id="column7">
                            <h:outputText binding="#{Domains.outputText13}" id="outputText13" value="#{currentRow['userCount']}"/>
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText14}" id="outputText14" value="Users"/>
                            </f:facet>
                        </h:column>
                        <h:column binding="#{Domains.column8}" id="column8">
                            <h:outputText binding="#{Domains.outputText15}" id="outputText15" value="#{currentRow['groupCount']}"/>
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText16}" id="outputText16" value="Groups"/>
                            </f:facet>
                        </h:column>
                        <h:column binding="#{Domains.column5}" id="column5">
                            <f:facet name="header">
                                <h:outputText binding="#{Domains.outputText17}" id="outputText17" value="Actions"/>
                            </f:facet>
                            <h:commandLink action="#{Domains.editDomain}" binding="#{Domains.linkAction2}" id="linkAction2">
                                <h:graphicImage binding="#{Domains.image2}" id="image2" title="Edit" value="resources/images/edit.gif"/>
                            </h:commandLink>
                            <h:commandLink binding="#{Domains.linkAction3}" id="linkAction3">
                                <h:graphicImage binding="#{Domains.image3}" id="image3" title="View" url="resources/images/view.gif" value="resources/images/view.gif"/>
                            </h:commandLink>
                            <h:commandLink binding="#{Domains.linkAction4}" id="linkAction4">
                                <h:graphicImage binding="#{Domains.image4}" id="image4" title="Delete" value="resources/images/delete.gif"/>
                            </h:commandLink>
                        </h:column>
                    </h:dataTable>
                </h:form>
            </body>
        </html>
    </f:view>
</jsp:root>
Domains.java
* Page1.java
* Created on October 28, 2004, 12:45 PM
* Copyright Gordon.Bell
package usergroupmgt;
import javax.faces.*;
import com.sun.jsfcl.app.*;
import javax.faces.component.html.*;
import com.sun.jsfcl.data.*;
import javax.faces.component.*;
import com.sun.sql.rowset.*;
import javax.faces.convert.*;
public class Domains extends AbstractPageBean {
    // <editor-fold defaultstate="collapsed" desc="Creator-managed Component Definition">
    private int __placeholder;
    private HtmlForm form1 = new HtmlForm();
    public HtmlForm getForm1() {
        return form1;
    public void setForm1(HtmlForm hf) {
        this.form1 = hf;
    private HtmlDataTable dataTable1 = new HtmlDataTable();
    public HtmlDataTable getDataTable1() {
        return dataTable1;
    public void setDataTable1(HtmlDataTable hdt) {
        this.dataTable1 = hdt;
    private JdbcRowSetXImpl domainviewRowSet = new JdbcRowSetXImpl();
    public JdbcRowSetXImpl getDomainviewRowSet() {
        return domainviewRowSet;
    public void setDomainviewRowSet(JdbcRowSetXImpl jrsxi) {
        this.domainviewRowSet = jrsxi;
    private HtmlOutputText outputText4 = new HtmlOutputText();
    public HtmlOutputText getOutputText4() {
        return outputText4;
    public void setOutputText4(HtmlOutputText hot) {
        this.outputText4 = hot;
    private UIColumn column3 = new UIColumn();
    public UIColumn getColumn3() {
        return column3;
    public void setColumn3(UIColumn uic) {
        this.column3 = uic;
    private HtmlOutputText outputText5 = new HtmlOutputText();
    public HtmlOutputText getOutputText5() {
        return outputText5;
    public void setOutputText5(HtmlOutputText hot) {
        this.outputText5 = hot;
    private HtmlOutputText outputText6 = new HtmlOutputText();
    public HtmlOutputText getOutputText6() {
        return outputText6;
    public void setOutputText6(HtmlOutputText hot) {
        this.outputText6 = hot;
    private UIColumn column4 = new UIColumn();
    public UIColumn getColumn4() {
        return column4;
    public void setColumn4(UIColumn uic) {
        this.column4 = uic;
    private HtmlOutputText outputText8 = new HtmlOutputText();
    public HtmlOutputText getOutputText8() {
        return outputText8;
    public void setOutputText8(HtmlOutputText hot) {
        this.outputText8 = hot;
    private UIColumn column7 = new UIColumn();
    public UIColumn getColumn7() {
        return column7;
    public void setColumn7(UIColumn uic) {
        this.column7 = uic;
    private HtmlOutputText outputText13 = new HtmlOutputText();
    public HtmlOutputText getOutputText13() {
        return outputText13;
    public void setOutputText13(HtmlOutputText hot) {
        this.outputText13 = hot;
    private HtmlOutputText outputText14 = new HtmlOutputText();
    public HtmlOutputText getOutputText14() {
        return outputText14;
    public void setOutputText14(HtmlOutputText hot) {
        this.outputText14 = hot;
    private UIColumn column8 = new UIColumn();
    public UIColumn getColumn8() {
        return column8;
    public void setColumn8(UIColumn uic) {
        this.column8 = uic;
    private HtmlOutputText outputText15 = new HtmlOutputText();
    public HtmlOutputText getOutputText15() {
        return outputText15;
    public void setOutputText15(HtmlOutputText hot) {
        this.outputText15 = hot;
    private HtmlOutputText outputText16 = new HtmlOutputText();
    public HtmlOutputText getOutputText16() {
        return outputText16;
    public void setOutputText16(HtmlOutputText hot) {
        this.outputText16 = hot;
    private HtmlSelectBooleanCheckbox checkbox1 = new HtmlSelectBooleanCheckbox();
    public HtmlSelectBooleanCheckbox getCheckbox1() {
        return checkbox1;
    public void setCheckbox1(HtmlSelectBooleanCheckbox hsbc) {
        this.checkbox1 = hsbc;
    private UIColumn column5 = new UIColumn();
    public UIColumn getColumn5() {
        return column5;
    public void setColumn5(UIColumn uic) {
        this.column5 = uic;
    private UIColumn column9 = new UIColumn();
    public UIColumn getColumn9() {
        return column9;
    public void setColumn9(UIColumn uic) {
        this.column9 = uic;
    private HtmlSelectBooleanCheckbox checkbox2 = new HtmlSelectBooleanCheckbox();
    public HtmlSelectBooleanCheckbox getCheckbox2() {
        return checkbox2;
    public void setCheckbox2(HtmlSelectBooleanCheckbox hsbc) {
        this.checkbox2 = hsbc;
    private HtmlOutputText outputText9 = new HtmlOutputText();
    public HtmlOutputText getOutputText9() {
        return outputText9;
    public void setOutputText9(HtmlOutputText hot) {
        this.outputText9 = hot;
    private UIColumn column10 = new UIColumn();
    public UIColumn getColumn10() {
        return column10;
    public void setColumn10(UIColumn uic) {
        this.column10 = uic;
    private RowSetDataModel dataTable1Model = new RowSetDataModel();
    public RowSetDataModel getDataTable1Model() {
        return dataTable1Model;
    public void setDataTable1Model(RowSetDataModel rsdm) {
        this.dataTable1Model = rsdm;
    private BooleanConverter booleanConverter1 = new BooleanConverter();
    public BooleanConverter getBooleanConverter1() {
        return booleanConverter1;
    public void setBooleanConverter1(BooleanConverter bc) {
        this.booleanConverter1 = bc;
    private HtmlCommandLink linkAction1 = new HtmlCommandLink();
    public HtmlCommandLink getLinkAction1() {
        return linkAction1;
    public void setLinkAction1(HtmlCommandLink hcl) {
        this.linkAction1 = hcl;
    private HtmlOutputText linkAction1Text = new HtmlOutputText();
    public HtmlOutputText getLinkAction1Text() {
        return linkAction1Text;
    public void setLinkAction1Text(HtmlOutputText hot) {
        this.linkAction1Text = hot;
    private HtmlGraphicImage image1 = new HtmlGraphicImage();
    public HtmlGraphicImage getImage1() {
        return image1;
    public void setImage1(HtmlGraphicImage hgi) {
        this.image1 = hgi;
    private HtmlCommandLink linkAction2 = new HtmlCommandLink();
    public HtmlCommandLink getLinkAction2() {
        return linkAction2;
    public void setLinkAction2(HtmlCommandLink hcl) {
        this.linkAction2 = hcl;
    private HtmlGraphicImage image2 = new HtmlGraphicImage();
    public HtmlGraphicImage getImage2() {
        return image2;
    public void setImage2(HtmlGraphicImage hgi) {
        this.image2 = hgi;
    private HtmlCommandLink linkAction3 = new HtmlCommandLink();
    public HtmlCommandLink getLinkAction3() {
        return linkAction3;
    public void setLinkAction3(HtmlCommandLink hcl) {
        this.linkAction3 = hcl;
    private HtmlGraphicImage image3 = new HtmlGraphicImage();
    public HtmlGraphicImage getImage3() {
        return image3;
    public void setImage3(HtmlGraphicImage hgi) {
        this.image3 = hgi;
    private HtmlCommandLink linkAction4 = new HtmlCommandLink();
    public HtmlCommandLink getLinkAction4() {
        return linkAction4;
    public void setLinkAction4(HtmlCommandLink hcl) {
        this.linkAction4 = hcl;
    private HtmlGraphicImage image4 = new HtmlGraphicImage();
    private HtmlOutputText outputText17 = new HtmlOutputText();
    public HtmlOutputText getOutputText17() {
        return outputText17;
    public void setOutputText17(HtmlOutputText hot) {
        this.outputText17 = hot;
    public HtmlGraphicImage getImage4() {
        return image4;
    public void setImage4(HtmlGraphicImage hgi) {
        this.image4 = hgi;
    // </editor-fold>
    public Domains() {
        // <editor-fold defaultstate="collapsed" desc="Creator-managed Component Initialization">
        try {
            domainviewRowSet.setDataSourceName("java:comp/env/jdbc/HBird");
            domainviewRowSet.setCommand("SELECT ALL dbo.DomainView.id, dbo.DomainView.name, dbo.DomainView.description, dbo.DomainView.enabled, dbo.DomainView.created, dbo.DomainView.modified, dbo.DomainView.userCount, dbo.DomainView.groupCount FROM dbo.DomainView");
            dataTable1Model.setDataCacheKey("com.sun.datacache.Domains.domainviewRowSet");
            dataTable1Model.setRowSet(domainviewRowSet);
            dataTable1Model.setSchemaName("");
            dataTable1Model.setTableName("");
        } catch (Exception e) {
            log("Page1 Initialization Failure", e);
            throw e instanceof javax.faces.FacesException ? (FacesException) e : new FacesException(e);
        // </editor-fold>
        // Additional user provided initialization code
//        try {
//            domainviewRowSet.execute();
//            domainviewRowSet.next();
//        } catch (Exception ex) {
//            throw new FacesException(ex);
    protected usergroupmgt.ApplicationBean1 getApplicationBean1() {
        return (usergroupmgt.ApplicationBean1)getBean("ApplicationBean1");
    protected usergroupmgt.SessionBean1 getSessionBean1() {
        return (usergroupmgt.SessionBean1)getBean("SessionBean1");
     * Bean cleanup.
    protected void afterRenderResponse() {
        domainviewRowSet.close();
    public String groupList() {
        // User event code here...
        return "groupList";
    public String editDomain() {
        // User event code here...
        return "editDomain";
}and the exception stack:
Stack trace:
com.sun.jsfcl.data.ResultSetPropertyResolver$RowData.getData(Unknown Source)
com.sun.jsfcl.data.ResultSetPropertyResolver.getValue(Unknown Source)
com.sun.faces.el.impl.ArraySuffix.evaluate(ArraySuffix.java:167)
com.sun.faces.el.impl.ComplexValue.evaluate(ComplexValue.java:151)
com.sun.faces.el.MixedELValueBinding.getValue(MixedELValueBinding.java:80)
javax.faces.component.UIOutput.getValue(UIOutput.java:147)
javax.faces.component.UIInput.validate(UIInput.java:639)
javax.faces.component.UIInput.executeValidate(UIInput.java:838)
javax.faces.component.UIInput.processValidators(UIInput.java:412)
javax.faces.component.UIData.iterate(UIData.java:969)
javax.faces.component.UIData.processValidators(UIData.java:781)
javax.faces.component.UIForm.processValidators(UIForm.java:170)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:904)
javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:342)
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:78)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:324)
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
java.security.AccessController.doPrivileged(AccessController.java:-2)
javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
java.security.AccessController.doPrivileged(AccessController.java:-2)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:214)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:168)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:144)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:133)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:539)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:254)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:114)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
java.lang.Thread.run(Thread.java:534)Any help is appreciated.

Hi,
Looks like some inconsistency in the jsp source:
in the 2nd link the url property is set. I don't think
you need to set this.
I couldn't tell what action you want to occur when you
click. If you want some action to occur such as
navigating to another page then you can use Page Navigation. Then you would need an action handler
for the LinkAction component.
<h:commandLink action="#{Domains.editDomain}" binding="#{Domains.linkAction2}" id="linkAction2">
<h:graphicImage binding="#{Domains.image2}" id="image2" title="Edit" value="resources/images/edit.gif"/>
</h:commandLink>
<h:commandLink binding="#{Domains.linkAction3}" id="linkAction3">
<h:graphicImage binding="#{Domains.image3}" id="image3" title="View" url="resources/images/view.gif" value="resources/images/view.gif"/>
</h:commandLink>
<h:commandLink binding="#{Domains.linkAction4}" id="linkAction4">
<h:graphicImage binding="#{Domains.image4}" id="image4" title="Delete" value="resources/images/delete.gif"/>
</h:commandLink>
John
JSC QA

Deleting a single row from a dataTable / database

Hi,
I am fairly new to JSF so please bear with me if the answer is obvious :D. I'm using a dataTable component to display data from a database and would like to add a commandLink component to every row in the table that deletes that row from the database. What is the most effective way of doing this?
I'm thinking of using a ListDataModel with some function that removes the correct row (though I'm not sure how it will tie in with a commandLink and exactly where the database will be updated). I'll appreciate any pointers or perhaps even an online example of something similar.
Alternatively I suppose you could pass an "id" parameter on with the commandLink that somehow gets read in the request and the appropriate row is removed accordingly. This solution seems cumbersome however.

jabalsad wrote:
Hi,
I am fairly new to JSF so please bear with me if the answer is obvious :D. I'm using a dataTable component to display data from a database and would like to add a commandLink component to every row in the table that deletes that row from the database. What is the most effective way of doing this?
I'm thinking of using a ListDataModel with some function that removes the correct row (though I'm not sure how it will tie in with a commandLink and exactly where the database will be updated). I'll appreciate any pointers or perhaps even an online example of something similar.
Alternatively I suppose you could pass an "id" parameter on with the commandLink that somehow gets read in the request and the appropriate row is removed accordingly. This solution seems cumbersome however.Yes, your instincts are correct there. Binding the data model to a backing bean to get the UIData instance for the table. Then use UIData.getRowData() to get the object corresponding to the row containing the link/button. Then execute your business logic to delete the row from the database. Then you need to ensure the data model is updated to reflect the new state of the database.

Passing object as parameter in JSF using h:commandLink tag

Hi ,
I have a scenario in which i need to pass objects from one jsp to another using h:commandLink. i read balusC article "Communication in JSF" and found a basic idea of achieving it. Thanks to BalusC for the wonderful article. But i am not fully clear on the concepts and the code is giving some error. The code i have is
My JSP:
This commandlink is inside a <h:column> tag of <h:dataTable>
<h:commandLink id="ol3"action="ManageAccount" actionListener="#{admincontroller.action}" >
               <f:param id="ag" name="account" value="#{admincontroller.account}" />
               <h:outputText id="ot3" value="Manage Account" rendered="#{adminbean.productList!=null}" />
               </h:commandLink>
Also a binding in h:dataTable tag with the binding="#{admincontroller.dataTable}"
                  My Backing Bean:
public class CompanyAdminController {
          private HtmlDataTable dataTable;
          private Account account=new Account();
public HtmlDataTable getDataTable() {
        return dataTable;
public Account getAccount() {
         return this.account;
public void setAccount(Account account) {
          this.account = account;
      public void action(){
            account= (Account)this.getDataTable().getRowData();
       } faces-config.xml
<navigation-rule>
    <from-view-id>/compadmin.jsp</from-view-id>
    <navigation-case>
      <from-outcome>ManageAccount</from-outcome>
      <to-view-id>/manageAccount.jsp</to-view-id>
    </navigation-case>
</navigation-rule>
<managed-bean>
          <managed-bean-name>admincontroller</managed-bean-name>
          <managed-bean-class>com.forrester.AdminController</managed-bean-class>
          <managed-bean-scope>request</managed-bean-scope>
          <managed-property>
               <property-name>account</property-name>
               <property-class>com.model.Account</property-class>
               <value>#{param.account}</value>
         </managed-property>
     </managed-bean>My account object:
public class Account {
string name;
public String getName()
    return this.name;
public void setName(String name)
       this.name=name;
}I need to display #{admincontroller.account.name} in my forwarded jsp. But I am not sure whether the code i wrote in commandlink is correct. I get an error if i use <f:setActionListener> . No tag "setPropertyActionListener" defined in tag library imported with prefix "f"
Please advise.
Edited by: twisai on Oct 18, 2009 11:46 AM
Edited by: twisai on Oct 18, 2009 11:47 AM
Edited by: twisai on Oct 18, 2009 11:48 AM

Yes.. iam removed the managedproperty from faces-config. But still i get the null pointer exception on main jsp itself and i am taken to second jsp manageaccount.jsp. Did you find anything wrong in my navigation case in the action method??
                                 public String loadAccount(){
           Account account = (Account)this.getDataTable().getRowData();
            return "ManageAcct";And also can you please answer this question i have
The AdminController is the backing bean of 1st JSP and manageAccontController is the backing bean of forwarded JSP .
Can i put this action method and dataTable binding in a 2nd manageAccontController backing bean instead of AdminController. But if i do that way dataList binding in h:dataTable tag will be in first JSP backing bean and dataTable binding to 2nd JSP. Not sure how to deal with this.
{

Datatable&commandLink

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