Richfaces editable dataTable not setting updated values in Bean

问题

I have tried a bunch of suggestions after googling but none has so far worked for me. I am trying to display a simple datatable with editable inputText values in each row. table is being populated from database via a usual List of objects. Here is my xhtml page and managed bean

Richfaces 4.2.1, JSF 2 mojarra bundled with JBoss 7.1, JDK 1.6

<rich:dataTable value="#{wlScoreBean.scoreList}" binding="#{wlScoreBean.scoreTable}" var="item" id="table" style="width:100%">
        <rich:column>
            <f:facet name="header">PARAM NAME</f:facet>
            <h:outputText value="#{item.paramName}" />
        </rich:column>
        <rich:column>
            <f:facet name="header">1 Score</f:facet>
             <h:inputText value="#{item.name1}" />
        </rich:column>
        <rich:column>
            <f:facet name="header">2 Score</f:facet>
             <h:inputText value="#{item.name2}" />
        </rich:column>
      </rich:dataTable>

        <br/>
        <h:panelGrid columns="3" id="buttonRow">
            <a4j:commandButton value="Save" render="table" execute="@this" action="#{wlScoreBean.update()}">                    
            </a4j:commandButton>
        </h:panelGrid>



import java.io.Serializable;
import java.util.List;

import javax.annotation.PostConstruct;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.component.html.HtmlDataTable;
import javax.faces.event.ValueChangeEvent;

import org.richfaces.component.UIDataTable;


@ManagedBean(name = "wlScoreBean")
@ViewScoped
public class WS implements Serializable
{

    private static final long serialVersionUID = 1L;

    private HtmlDataTable scoreTable;
    private List<WorkloadScore> scoreList;

    public void watchScore(ValueChangeEvent e)
    {
        System.out.println("old value="+e.getOldValue() + ", New Value="+e.getNewValue());
    }

    public List<WorkloadScore> getScoreList() {
        return scoreList;
    }

    public void setScoreList(List<WorkloadScore> scoreList) {
        this.scoreList = scoreList;
    }

    @EJB
    private WorkloadScoreManagerService wlScoreManager;

    public HtmlDataTable getScoreTable() {
        return scoreTable;
    }

    public void setScoreTable(HtmlDataTable scoreTable) {
        this.scoreTable = scoreTable;
    }

    public WorkloadScoreBean()
    {

    }

    @PostConstruct
    private void getAllScores()
    {
        this.scoreList = wlScoreManager.getAllScores();
    }

    public void update()
    {

        for (WorkloadScore wls : getScoreList())
        {
            System.out.println(wls.getParamName()+"="+wls.getPortabilityScore()+","+wls.getVirtualizationScore());
        }

        //wlScoreManager.update(workloadScore);
    }
}

Here's all the things I tried. All of them result in only the OLD VALUES being printed to console in the update() method.

Changed from rich:dataTable to plain old JSF h:dataTable, same result
Bound the dataTable to a Managed Bean property, checked in update() method, old values are being printed here too. I just did a getVlaue() on the UIDataTable object and cast it to List.

The List is supposed to have been updated with changed values from the form, but I do not see it happening. I did make sure to put the MBean in ViewScope.

回答1:

do you have a h:form outside the datatable? and did you try to replace inputtext with inplaceinput fields?

回答2:

See answer here https://community.jboss.org/thread/200684?tstart=0

I changed execute=@form and it worked! no need for ValueChangeEvent or messing with dataTable binding. The List values are updated in place and the update method prints the correct value

来源：https://stackoverflow.com/questions/10897427/richfaces-editable-datatable-not-setting-updated-values-in-bean

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