Question

i have a SEAM 2 application and i have a strange situation. I’m developing with Eclipse Indigo, and i need to create a page with a grid where each row has a button that display a popup window with a list and you can choose one item of the list with a link and the value selected is shown in the row.

So i have this component:

@Name("paramContHome")
@Scope(ScopeType.CONVERSATION)
public class ParamContHome extends KubeDAO<ParametroSistema>{

    private static final long serialVersionUID = 1L;

    @In
    private LoginUser loginUser;

    @In(required=false,create=true)
    private CuentaContHome cuentaContHome;

    public void load(){
        try{
            setInstance(getEntityManager().find(ParametroSistema.class, prctId));
        }catch (Exception e) {
            clearInstance();
            setInstance(new ParametroSistema());
        }
    }

    public void selCuentaParam(ParametroSistema par) {
        setSelParam(par);
        cuentaContHome.getCuentasList();
    }

    public void setCuentaParam(CuentaContable cta) {
        selParam.setValorNum(cta.getId().floatValue());
        selParam.setSelObj(cta);
    }

    ...

    }

That contains the methods that i’m trying to call from xhtml page. This is the xhtml page:

<?xml version="1.0" encoding="iso-8859-1" ?>
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:s="http://jboss.com/products/seam/taglib"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:a="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich"
    xmlns:p="http://primefaces.prime.com.tr/ui"
    template="/layout/templateKu.xhtml">
    <ui:define name="body">
        <rich:panel>
            <f:facet name="header">#{app.paramact_head}</f:facet>
            <rich:spacer height="20" />
            <h:form id="formA">
                <p:growl globalOnly="true" sticky="false" life="3000" />
                <p:focus />
                <a:queue name="q1" />

                <rich:dataTable var="res" value="#{paramContHome.resultList}"
                    rendered="#{not empty paramContHome.resultList}" rows="10"
                    align="center" rowClasses="tableInfo1 tableInfo2"
                    headerClass="tablaHeader" footerClass="tableScroll">
                    <f:facet name="header">#{app.paramact_list}</f:facet>

                    <rich:column filterBy="#{res.nombre}" filterEvent="onkeyup">
                        <f:facet name="header">#{app.paramact_nombre}</f:facet>
                        <h:outputText value="#{res.nombre}" />
                    </rich:column>
                    <rich:column>
                        <f:facet name="header">#{app.transferencia_valornum}</f:facet>
                        <h:inputText value="#{res.selObj.nombre}" size="20" >
                            <a:support event="onblur" ajaxSingle="true" eventsQueue="q1" reRender="_table"/>
                        </h:inputText>
                        <a:commandButton ajaxSingle="true"   
                            action="#{paramContHome.selCuentaParam(res)}" reRender="sCta" 
                            onclick="#{rich:component('selCta')}.show();"
                            styleClass="modifyBtn" value=" " style="width:30px;">
                        </a:commandButton>
                    </rich:column>
                    <f:facet name="footer">
                        <rich:datascroller id="ds1" renderIfSinglePage="true" />
                    </f:facet>
                </rich:dataTable>
            </h:form>
        </rich:panel>
        <rich:modalPanel id="selCta" width="400" moveable="false" autosized="true" top="50px" 
            onbeforeshow="activeModal.setActiveModalPanel('selCta');">
            <f:facet name="header">#{app.general_lov}</f:facet>
            <f:facet name="controls">
                <h:panelGroup>
                    <h:graphicImage value="/kubeImg/close.png" styleClass="closeBtn" 
                        onclick="#{rich:component('selCta')}.hide();" />
                </h:panelGroup>
            </f:facet>
            <s:div id="sCta"><ui:include  src="selCta.xhtml" /></s:div>
        </rich:modalPanel>
    </ui:define>
</ui:composition>

This is the button where i wanna call the method selCuentaParam of component paramContHome:

<rich:column>
    <f:facet name="header">#{app.transferencia_valornum}</f:facet>
    <h:inputText value="#{res.selObj.nombre}" size="20" >
        <a:support event="onblur" ajaxSingle="true" eventsQueue="q1" reRender="_table"/>
    </h:inputText>
    <a:commandButton ajaxSingle="true"   
        action="#{paramContHome.selCuentaParam(res)}" reRender="sCta" 
        onclick="#{rich:component('selCta')}.show();"
        styleClass="modifyBtn" value=" " style="width:30px;">
    </a:commandButton>
</rich:column>

Inside this method, i call a method from another component, cuentaContHome:

@In(required=false,create=true)
private CuentaContHome cuentaContHome;
...
public void selCuentaParam(ParametroSistema par) {
setSelParam(par);
cuentaContHome.getCuentasList();
}

But when i run the application and enter to the page, and i press the button, it doesn’t calle the method selCuentaParam. I’ve checked this because i put breakpoints inside it and put System.out.println and doesn’t invoke it. Do you know why this happens, is something related to component initialization?

Regards.

Answer 1

Well, i found the problem, i think. In my screens i follow a certain pattern: First i have a xhtml where i show a grid of database records with a button to go to a second xhtml wich has a form to create a new record. This button begins a conversation, so in the xhtml that has a form (i call it detail.xhtml) it begins the conversation or joins to existing one. So, i modified the pages.xml of the first xhtml (i call it list.xhtml) in the next way:

<?xml version="1.0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.2.xsd">
 <action execute="#{paramContHome.getParametrosContables()}" on-postback="false"/>

       <begin-conversation propagation="begin" join="true" />

</page>

I used first just <begin-conversation /> and but it gives me this exception begin() called from long-running conversation, try join=true so i added this to begin-conversation and it works!!