4 Replies Latest reply on Jul 10, 2007 6:57 PM by sunil.su

long running conversation problem

sunil.su Jul 9, 2007 2:58 PM

Hi,

I am using Seam 1.2.1, Ajax4jsf and Jboss AS 4.0.5.

My web page has a data table with one of the columns being an s:link. The s:link action refers to a method on the backing SFSB. I have set the propagation attribute in s:link to true. The same page is rendered when the method returns.

The problem I am having is that a new conversation is started when I click on the link and the page is rerendered instead of joining the existing conversation. This creates a new instance of the backing SFSB.

I also dont see the "cid=x&clr=true" in the url similar to what you see in the booking example.

I would appreciate any help on this issue.

Thanks

1. Re: long running conversation problem

sunil.su Jul 9, 2007 3:13 PM (in response to sunil.su)

sorry, propagation is set to "join"
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2. Re: long running conversation problem

pmuir Jul 9, 2007 3:59 PM (in response to sunil.su)

Post code!
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3. Re: long running conversation problem

sunil.su Jul 9, 2007 9:42 PM (in response to sunil.su)

Here is the page

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:a4j="https://ajax4jsf.dev.java.net/ajax">
<head>
 <link href="style.css" rel="stylesheet" type="text/css"/>
</head>
<body>

<h2>Create Org</h2>

<f:facet name="beforeInvalidField">
 <h:graphicImage styleClass="errorImg" value="error.png"/>
</f:facet>
<f:facet name="afterInvalidField">
 <s:message styleClass="errorMsg" />
</f:facet>
<f:facet name="aroundInvalidField">
 <s:div styleClass="error"/>
</f:facet>
<h:form>
 <h1>Org</h1>
 <fieldset>
 <h:commandButton value="Org" action="#{orgmanager.start}" styleClass="button" />
 </fieldset>
</h:form>
<h:form>
<s:validateAll>
<table>
 <tr>
 <td>Org Name:</td>
 <td>
 <s:decorate>
 <h:inputText value="#{orgEntry.name}" size="32">
 </h:inputText>
 </s:decorate>
 </td>
 </tr>

 <tr>
 <td>Org Code:</td>
 <td>
 <a4j:outputPanel id="orgcode">
 <f:subview rendered="#{!empty(codeErrorMsg)}">
 <f:verbatim><div class="error"></f:verbatim>
 <h:graphicImage styleClass="errorImg" value="error.png"/>
 </f:subview>

 <h:inputText value="#{orgmanager.orgCode}" size="32">
 <a4j:support event="onblur" reRender="orgcode"/>
 </h:inputText>
 <f:subview rendered="#{!empty(codeErrorMsg)}">
 <h:outputText styleClass="errorMsg"
 value="#{codeErrorMsg}"/>
 <f:verbatim></div></f:verbatim>
 </f:subview>
 </a4j:outputPanel>
 </td>
 </tr>

 <tr>
 <td>Org Description:</td>
 <td>
 <s:decorate>
 <h:inputText value="#{orgEntry.description}" size="32">
 </h:inputText>
 </s:decorate>
 </td>
 </tr>

 <tr>
 <td>Org Level:</td>
 <td>
 <a4j:outputPanel id="orglevel">
 <s:decorate>
 <h:panelGroup>
 <h:selectOneMenu value = "#{orgLevelStr}">
 <f:selectItems value="#{orgLevels}" />
 <a4j:support event="onchange" action="#{orgmanager.getParentOrgCodes}"
 ajaxSingle="true" reRender="orgparent" />
 </h:selectOneMenu>
 </h:panelGroup>
 </s:decorate>
 </a4j:outputPanel>
 </td>
 </tr>

 <tr>
 <td>Org Parent:</td>
 <td>
 <a4j:outputPanel id="orgparent">
 <s:decorate>
 <h:panelGroup>
 <h:selectOneMenu value = "#{orgmanager.parentOrgCode}">
 <s:selectItems value="#{parentOrgCodes}" var="parentOrgCode" label="#{parentOrgCode}" />
 </h:selectOneMenu>
 </h:panelGroup>
 </s:decorate>
 </a4j:outputPanel>
 </td>
 </tr>
</table>
</s:validateAll>

<h:commandButton type="submit"
 value="Create Org"
 action="#{orgmanager.createOrg}"/>
</h:form>

<p>Orgs:</p>

<h:form>
<h:dataTable id="orgList" value="#{orgList}" var="org">
 <h:column>
 <f:facet name="header">
 <h:outputText value="Name" />
 </f:facet>
 <h:outputText value="#{org.name}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Code" />
 </f:facet>
 <s:link value="#{org.code}" action="#{orgmanager.selectOrg}" propagation="join"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Description" />
 </f:facet>
 <h:outputText value="#{org.description}"/>
 </h:column>
 <h:column>
 <f:facet name="header">
 <h:outputText value="Level" />
 </f:facet>
 <h:outputText value="#{org.orgLevel.name}"/>
 </h:column>
</h:dataTable>
</h:form>
</body>
</html>

The code for the bean is


@Stateful
@Scope(ScopeType.CONVERSATION)
@Name("orgmanager")
@Conversational(ifNotBegunOutcome="menu")
public class OrgManagerBean implements OrgManager, Serializable {
 @Logger
 private Log log;

 @PersistenceContext(type = EXTENDED)
 private EntityManager em;

 @In(create=true,required = false) @Out(required = false)
 private Org orgEntry;

 @EJB OrgDAO orgDAO;
 @EJB OrgLevelDAO orgLevelDAO;

 @Out(required = false)
 private List<String> parentOrgCodes = new ArrayList<String>();
 @Out(required = false)
 private List<SelectItem> orgLevels = new ArrayList<SelectItem>();

 @DataModel
 private List<Org> orgList;

 @DataModelSelectionIndex
 private int orgIndex;

 private OrgLevel orgLevel;

 //@Begin(join=true)
 public String start() {
 //loadOrgs();
 //loadOrgLevels();
 return "org";
 }

 @End
 public String createOrg() {
 Org parentOrg = null;
 orgLevel = orgLevelDAO.findByName(orgLevelStr);
 orgEntry.setOrgLevel(orgLevel);
 em.persist(orgEntry);
 if (parentOrgCode != null) {
 parentOrg = orgDAO.findOrgByCode(parentOrgCode);
 OrgLink orgLink = new OrgLink(parentOrg, orgEntry, new Date());
 em.persist(orgLink);
 }
 return "org";
 }

 public String listOrgLevel() {
 // TODO Auto-generated method stub
 return null;
 }
 public void loadOrgLevels() {
 List<OrgLevel> list = orgLevelDAO.findAll();
 orgLevels = new ArrayList<SelectItem>();
 for (OrgLevel level : list) {
 orgLevels.add(new SelectItem(level.getName(), level.getName()));
 }
 log.info("orgLevels size = " + orgLevels.size());
 }

 @Begin(join=true) @Create
 public void init() {
 log.info("init() called");
 loadOrgs();
 loadOrgLevels();
 }
 public void loadOrgs() {
 orgList = orgDAO.findAll();
 }

 public String selectOrg() {
 log.info("Index =" + orgIndex);
 System.out.println("Index =" + orgIndex);
 orgEntry = orgList.get(orgIndex);
 log.info("Selected Code: " + orgEntry.getCode());
 return "org";
 }

 @Out(required = false)
 String codeErrorMsg;

 @In(required = false)
 String orgLevelStr;

 public void getParentOrgCodes() {
 log.info("-> getParentOrgCodes");
 if (parentOrgCodes != null)
 parentOrgCodes.clear();
 if (orgLevelStr != null) {
 orgLevel = orgLevelDAO.findByName(orgLevelStr);
 orgEntry.setOrgLevel(orgLevel);
 int level = orgEntry.getOrgLevel().getLevel();
 List<Org> list = orgDAO.findOrgsAboveLevel(level);
 for (Org o : list) {
 parentOrgCodes.add(o.getCode());
 }

 }
 }

 String orgCode;

 public void setOrgCode(String orgCode) {
 this.orgCode = orgCode;
 if (orgDAO.findOrgByCode(orgCode) != null) {
 codeErrorMsg = "Warning: \"" + orgCode +
 "\" is already in the system.";
 }
 else {
 codeErrorMsg = "";
 orgEntry.setCode(orgCode);
 }
 }

 public String getOrgCode() {
 return orgCode;
 }

 String parentOrgCode;
 public String getParentOrgCode() {
 return parentOrgCode;
 }
 public void setParentOrgCode(String pOC) {
 parentOrgCode = pOC;
 }

 @Destroy @Remove
 public void destroy() {
 log.info("destroy() called");
 }
}

Thanks....

4. Re: long running conversation problem

sunil.su Jul 10, 2007 6:57 PM (in response to sunil.su)

Hi Pete,

Do you see anything obvious in the code that can cause the problem?

Thanks.
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