[jboss-user] [JBoss Seam] - To Gavin.King--how to start a conversation from pages.xml

[ybxiang.wolf]

Gavin.King:

  I have a question for long, and i read seam_reference at least 3 times but still do not find the answer. Please help me.

  The question is:
  I have an home page with two links:
  1)<s:link action="#{register.start}" value="Register" propagation="end"/>
   2)<s:link action="#{userSearching.start}" value="Users Info" propagation="end"/>

  When i push on them, old converstaion will stop[propagation="end"] and new CONVERSTAION-scoped conversation will start[XXX.start is annotated with @Begin].

  Now, i finish registeration with register.uploadPicture[ annotaed with @End] and hope to start the converstaion of "userSearching" by executing #{userSearching.start}, but pages.xm does not support to do so!!! How shall i do?


<!-- registeration step1: set basic info -->
<page view-id="/pages/sys/user/register.xhtml">
<navigation from-action="#{register.register}">
  <rule if-outcome="FAILURE">
    <redirect view-id="/pages/sys/user/register.xhtml" />
  
  <rule if-outcome="SUCCESS">
    <redirect view-id="/pages/sys/user/setuserimg.xhtml" />
  



<!-- registeration step2: set user picture and end the conversation. -->
<page view-id="/pages/sys/user/setuserimg.xhtml">
  <navigation from-action="#{register.uploadPicture}">
     <!-- 
=========== ********************===========
       I want to start userSearching conversation by executing "#{userSearching.start}" , but how???
=========== ********************===========
    -->
     
  



Session-scoped userSearching is heavy, so i use conversation-scoped conversation. I hope pages.xml can be set to start the userSearching conversation indirectly rather than to jump to userSearching page[usersinfo.xhtml] directly. 

NOTE:
I want to query and delete user in userSearching conversation , but do nothing more--that is why i use it as a conversation-scoped stateful session bean.


Now most things work perfect, but when i finish register user, jump to usersinfo.xhtml directly, and select one user to modify[ start other conversation:action="#{userModifying.selectObject(hot)}" ], NOW, this it will jump to debug.seam and tell me something wrong with conversation.


I DO NOT think you need to read below codes, but i show them to make things clearer.
















********* register CONVERSATION************
@Stateful
@Name(value = "register")
@Scope(ScopeType.CONVERSATION)
public class RegisterAction implements RegisterItf {
.....................
	@Factory("newUser")
	@Begin
	public void start() {
		newUser = new User();
	}
	@Destroy
	@Remove
	public void destroy() {
	}	
	

	public String register() {
				if (this.checkCaptcha().equalsIgnoreCase("FAILURE")) {
					return "FAILURE";
				}else{
					return "SUCCESS";
				}


	}

	@End
	public void uploadPicture() {
.............................
	}
}//END OF CLASS






********* userSearching CONVERSATION ************
@Stateful
@Name("userSearching")
@Scope(ScopeType.CONVERSATION)
public class UserSearchingAction extends CommonSearchingAction implements UserSearchingItf {
	@DataModel
	private List queriedObjects;

	@Begin
	public void start() {
	// initialize queriedObjects
	}

	@Destroy
	@Remove
	public void destroy() {
	}

	@DataModelSelection
	@Out(required = false)
	private User selectedObject;

	public void delete() {
	//delete user here
	}
}




*********** usersinfo.xhtml  begin******************
                    <rich:dataTable id="dataTable_queriedObjects"
                    	value="#{queriedObjects}" var="hot" 
                    	rendered="#{queriedObjects.rowCount>0}">
                        <f:facet name="header">
                            <rich:columnGroup>
                                <h:column><h:outputText styleClass="headerText" value="username" /></h:column>                            
                   
                                <h:column><h:outputText styleClass="headerText" value="Action" /></h:column> 
                            </rich:columnGroup>
                        </f:facet>

                        <rich:columnGroup>
	                        <h:column>#{hot.username}</h:column>
	                        <h:column>
	                        	<s:button value="Delete" action="#{userSearching.delete}"/>
	                        	&#160;
	                        	<s:button id="modifyObject" value="MOdify User" action="#{userModifying.selectObject(hot)}" propagation="end"/>					</h:column>
                        </rich:columnGroup>
                    </rich:dataTable>	
*********** usersinfo.xhtml  end******************





Thanks and wait for your answer!


Best regards.

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