Flex + Sending ArrayCollection to Server + Request Scope

Hi All,
I have a requirement where I have to send an ArrayCollection
instance containing actionscript instances to server side. Server
side component is java servlet.
Could anyone please tell me how this can be done.
I hav explored flex APIs where I get reference to sending as
key/value. Here this is not feasible as I have a collection of .as
instances and each .as instance is composed of 20 string objects.
I have one idea I can get the whole ArrayCollection on the
server side by request scope, if I can bind the same
ArrayCollection in request scope with some key in mxml page. Can it
be done.
If I am in one jsp page from where I am forwarding to another
jsp, then what I will do is in first jsp, I will write:
request.setAtribute("SomeKey", instance);
In second jsp, I will write
List list = (List)request.getAttribute("SomeKey");
I have no idea of how request.setAttribute is done in mxml
page. Can it be done. Can anyone help me here. If this is not
possible, is there any other way of doing this.
Many Thanks,
Best Regards,
Nazz

Hi,
Thanks for the reply. Apologies for updating you late on
this.
I have downloaded JSON api from here:
JSON API
I have placed the as3corelib.swc file in my WEB-INF/flex/lib
folder, I have imported the JSON class in mxml page using import
com.adobe.serialization.json.JSON;
when I hit the browser, it gives me following error on the
browser:
quote:
1 Error, 1 Exception found.
Error /nazz/SampleJSON.mxml
unable to load SWC as3corelib.swc
Exception flex2.compiler.swc.SwcException$SwcNotLoaded
Here is the stacktrace from the server log:
quote:
12/21 20:07:55 ERROR
unable to load SWC as3corelib.swc
12/21 20:07:55 ERROR
flex2.compiler.swc.SwcException$SwcNotLoaded
at flex2.compiler.swc.SwcCache.getSwc(SwcCache.java:230)
at flex2.compiler.swc.SwcCache.getSwcs(SwcCache.java:174)
at flex2.compiler.swc.SwcCache.getSwcGroup(SwcCache.java:78)
at flex2.compiler.swc.SwcCache.getSwcGroup(SwcCache.java:67)
at
flex2.compiler.CompilerSwcContext.load(CompilerSwcContext.java:52)
at
flex2.server.j2ee.IncrementalCompileFilter.fullCompile(IncrementalCompileFilter.java:186)
at
flex2.server.j2ee.IncrementalCompileFilter.compileMxml(IncrementalCompileFilter.java:113)
at
flex2.server.j2ee.BaseCompileFilter.mxmlToSwf(BaseCompileFilter.java:286)
at
flex2.server.j2ee.BaseCompileFilter.invoke(BaseCompileFilter.java:72)
at
flex2.server.j2ee.RecompileFilter.invoke(RecompileFilter.java:38)
at flex2.server.j2ee.AboutFilter.invoke(AboutFilter.java:48)
at flex2.server.j2ee.MxmlServlet.doGet(MxmlServlet.java:159)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
flex.bootstrap.BootstrapServlet.service(BootstrapServlet.java:85)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j ava:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11P rotocol.java:743)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.ja va:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Please help.
I'm using flex 2.
Many Thanks,
Best Rgds,
NAZZ

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The error (in dutch):
Uw bericht kan niet worden bezorgd bij de volgende personen of distributielijsten:
19d23aca-f069-4dfb-8f90-47ee2b07317f
Het e-mailadres van de geadresseerde is niet gevonden in het e-mailsysteem van de geadresseerde. Microsoft Exchange probeert dit bericht niet opnieuw te verzenden. Controleer het e-mailadres van de geadresseerde en probeer dit bericht nog eens te versturen
of geef de volgende diagnosetekst door aan uw systeembeheerder.
Diagnostische gegevens voor beheerders:
Bronserver: CPHUB-ZH01.kpneol.local
IMCEAEX-_O=KPNEOL_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=*** E-mailadres is om privacyredenen verwijderd ***
#< #5.1.1 smtp;550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found> #SMTP#
Oorspronkelijke berichtkoppen:
Received: from CPMBS-ZH01.kpneol.local ([169.254.2.62]) by
CPHUB-ZH01.kpneol.local ([10.94.81.134]) with mapi; Thu, 30 Jan 2014 10:13:10
+0100
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: Dineke Wolbink <hier stond mijn e-mailadres>
To: 19d23aca-f069-4dfb-8f90-47ee2b07317f
<IMCEAEX-_O=KPNEOL_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=*** E-mailadres is om privacyredenen verwijderd ***>
Date: Thu, 30 Jan 2014 10:13:04 +0100
Subject: hoi
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How to get detailStamp working in an af:table when using request scope ?

<af:table var="row" id="t1" value="#{listUsers.users}" summary="Userlist" binding="#{listUsers.ATable}" [...]
<af:column sortable="false" headerText="Username" id="c13" filterable="true">
<af:outputText value="#{row.username}" id="ot13"/>
</af:column>
<f:facet name="detailStamp">
<af:panelFormLayout rows="4" labelWidth="33%" fieldWidth="67%" inlineStyle="width:795px" id="pfl1" labelAlignment="start" >
<af:group id="g1">
<af:panelLabelAndMessage id="plamNumber" label="Number" for="number">
<af:outputText value="#{row.address.number}" id="number"/>
</af:panelLabelAndMessage>
I feel there is nothing special with this.
But I've tested with 2 rows in my table and when I disclose rows, I get random results :
sometimes I get the details related to the row disclosed, but sometimes I get the details of the other row.
I've read several posts on the subject but none really helpful.
Another problem ; I've noticed that when I disclose or close a row, getUsers() is called, this method fetch the data from the DB, any way to prevent it ?
For the second problem, the solution I see would be to : change scope of listUsers to session instead of request, fetch from the DB only when "refresh", not when "detailStamp",
but I've no clue on how to actually do the "only when part"
Thanks in advance,
JP

Ok when I change the scope of ListUsers to session it's "ok" since I only load the list from the DB once (just like the demo that does not have this problem since the demo does not use the DB)
When I change the scope for request and that the page is refreshed then the object ListUsers is "recreated" and the data reloaded : that's the expected behavior
So I prefer to have the scope sets to request
The problem is that when a user disclose/close a detailstamp and that the scope is set to request,
then the data is reloaded from the DB
because apparently this event acts like a "refresh"
because this event (disclose/close) cause the destruction of what is in the request scope ...
That's my understanding, probably few mistakes, I'm beginning with ADF/JSF
It seems that when I load the data from the DB, it's not always in the same order, causing the problem itself probably, which is not ADF related BUT ;
what I would like to know is how to (elegantly) prevent the event of "disclose/close" to act like a "refresh" ?
Because even if I fix the "not ADF related problem" (if there is one), loading the list from the DB each time, appears really useless and the DBA won't like me !
A solution could be to leave the session scope, but then my question would be ;
*how to know I've to reload from the DB ?"
I could just "reload it on page load", seems ok to me but
I'm not sure it's the best, I would like to have your opinion, I've found this article for the "on page load" part ;
http://groundside.com/blog/DuncanMills.php?title=adf_executing_code_on_page_load&more=1&c=1&tb=1&pb=1
Thanks,
JP

Validation error while trying to change a value in a request scope bean

- JBoss 4.2.3.GA
- JSF 1.2_09-b01-BETA1 (Mojarra)
- Java 5 Update 17
Hello, everybody!
I'm having the following problem in my JSF web application:
I have a request scope backing bean. The first time this bean is loaded (I check
this with the ResponseStateManager.isPostBack() method) I fill a list of SelectItem
instances that are to be displayed in the JSF page in a +<h:selectOneMenu>+ component.
The list goes, of course, to the +<h:selectOneMenu>+'s +<f:selectItems>+ facet child
component. In the constructor I also define the value that goes to the value property
of the +<h:selectOneMenu>+ component. This value is a property in the backing bean, as
is the list of SelectItem instances. Until now we have something like this:
The backing bean declaration in faces-config.xml:
<managed-bean>
    <managed-bean-name>solicitacaoGeral</managed-bean-name>
    <managed-bean-class>br.urca.solicitacoes.web.PaginaSolicitacaoGeral</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
</managed-bean>
The relevant parts of the JSF page:
<h:form id="form">
    <h:selectOneMenu value="#{solicitacaoGeral.setorOrigem}" id="foco">
        <f:selectItems value="#{solicitacaoGeral.setoresOrigem}" />
    </h:selectOneMenu>
</h:form>
The relevant parts of the backing bean class:
public class PaginaSolicitacaoGeral
    private final List<SelectItem> fSetoresOrigem = new ArrayList<SelectItem>();
    private Setor fSetorOrigem;
    public PaginaSolicitacaoGeral()
        if (primeiraExibicao()) // First load (!ResponseStateManager.isPostBack())
            // Fill fSetoresOrigem...
            fSetorOrigem = ...
        else // Page submitted
            // Read below...
    public List<SelectItem> getSetoresOrigem()
        return fSetoresOrigem;
    public Setor getSetorOrigem()
        return fSetorOrigem;
    public void setSetorOrigem(Setor setorOrigem)
        fSetorOrigem = setorOrigem;
    private boolean primeiraExibicao()
        String idFerramentaExibicao =
            FacesContext.getCurrentInstance().getViewRoot().getRenderKitId();
        ResponseStateManager gerenciadorEstadoResposta =
            RenderKitUtils.getResponseStateManager(
            FacesContext.getCurrentInstance(), idFerramentaExibicao);
        return !gerenciadorEstadoResposta.isPostback(
            FacesContext.getCurrentInstance());
}But when the user submits the form and the bean constructor is called again
(this time the method ResponseStateManager.isPostBack() returns true ),
in the else block in the constructor above, I need to fill fSetoresOrigem with
other values and also the fSetorOrigem field because, of course, the fSetorOrigem
field has to be a valid value that exists in the new fSetoresOrigem list.
JSF is not complaining about the change to the list items, but it is complaining
to the change to the fSetorOrigem field (the list value), even though it is a
valid value present in the list. So I'm getting this error message:
08:23:54,312 INFO [lifecycle] WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.
sourceId=form:foco[severity=(ERROR 2), summary=(form:foco: Validation Error: Value is not valid), detail=(form:foco: Validation Error: Value is not valid)]I suppose that JSF is comparing the new value of the field fSetorOrigem with the value
it has in the view state. As the value is different it is raising the error. That's
what I suppose. But am I not able the change the value in the postback? I've already
checked and the value is valid. It corresponds to a value that exists in the list.
I really need a solution to this problem as I'm stuck with this and can't proceed until
I find a solution to this. What I am doing wrong and how can I solve this?
Thank you very much.
Marcos

BalusC wrote:
It is comparing the selected value against the List<SelectItem> returned by getSetoresOrigem() as it is during the apply request values phase of the form submit request.Ok. That's what I supposed JSF was doing.
BalusC wrote:
If the selected value isn't in there, then you will get this error.I can understand this, but is this right? As I said, the old value isn't really there because I changed the list values to new ones. But the new value (the value of fSetorOrigem ) corresponds to a value that exist in the new list items, so a valid value. So JSF is not considering that I also changed the list, not just the value. It is comparing the new value with the old list, not the new one. Acting like this JSF is making the page looks like a static HTML page, not a dynamic one. If I can't change the list and the value, what's the point of that? In my point of view I'm not doing anything wrong, I'm not violating any JSF rules.
Marcos

Have a backing bean in request scope; need to access parameters sent to it

I have a request scope backing bean in my app, 'projectBean'. This has a property called 'id'.
/** in request scope in faces-config.xml */
projectBean {
    id               // set by the param from the previous page
    downloadAction() // activated by commandlink, depends on id
}There is another backing bean in session scope called 'projectListingBean', which has a dataTable that lists a bunch of projectBeans. In this 'projectListingBean', I can click on any row. That row, when clicked initializes a 'id' parameter, which is then passed to the new 'projectBean'. 'projectBean' then initializes itself based on the id.
In the jsp page backed by 'projectBean', I also have a link to download something specific to that 'projectBean'. Naturally enough, I have a commandlink with actionBinding to a method in my 'projectBean', downloadXXXAction().
The problem arises because the downloadXXX() method relies on a 'id'. Remember, this id was orinigally set 2 requests back from the datatable. Since the page backed by 'projectBean' is in request scope, the id is lost, and my method call doesn't work. I tried changing the scope of 'projectBean' to session, but JSF complains that I already setting the 'id' property as a param, I can't set the whole managed bean to something 'higher' like session.
Of course, the ideal fix to this probelm would be the ability to have beans in page scope, but what other ways (hacks??) are there to get around this?

Hi, I'm posting some code snippets if it helps with understanding the problem.
faces-config.xml:

<managed-bean>
     <managed-bean-name>projectListingBean</managed-bean-name>
     <managed-bean-scope>session</managed-bean-scope>
     <managed-property>
          <property-name>projectBeans</property-name>
          <property-class>java.util.List</property-class>
          <list-entries>
               <value-class>
                    com.sun.sleuth.omcmweb.view.bean.ProjectBean
               </value-class>
          </list-entries>
     </managed-property>
</managed-bean>

<managed-bean>
     <managed-bean-name>projectBean</managed-bean-name>
     <managed-bean-class>
     </managed-bean-class>
     <managed-bean-scope>request</managed-bean-scope>
     <managed-property>
          <property-name>projectId</property-name>
          <property-class>java.lang.String</property-class>
          <value>#{param.projectId}</value>
     </managed-property>
</managed-bean>projectlsting.jsp (page backed by projectListingBean)
<h:dataTable value="#{projectListingBean.projectBeans}"
     var="projectBean" ...>
     <h:column>
          <f:facet name="header">
          </f:facet>
          <h:commandLink action="#{projectListingBean.viewProjectSUmmary}">
               <h:outputText value="#{projectBean.projectId}" />
               <f:param name="projectId" value="#{projectBean.projectId}" />
          </h:commandLink>
     </h:column>
</h:dataTable>projectsummary.jsp (page backed by request scoped projectBean)
<h:commandLink action="#{projectBean.assessmentAction}" value="..." />
...Flow:
projectlisting.jsp (projectListingBean - session) -param id passed->
projectsummary.jsp (projectBean - request) -commandLink clicked and id lost-->
projectSummary.jsp (projectBean - request)

Creation of a Managed Bean in Request Scope?

Is there an easy way to create an instance of a managed bean (configured in faces-config.xml) that was configured to be in the Request scope?
If a JSP refers to it by id, then it will be there.
However, when the JSP does not refer to it, it will not be in the request. I find I need to generate it anyway to use it from within another Managed Bean. I can extract out the faces-config information from the application map (available from FacesContext) and build it manually -- but this ties me to a particular JSF implementation (and probably version, too).
Is there a more standardized way to do this?
Thanks,
ken

BTW -- I mean to do this from within Java code (not jsp), and the page being rendered does not have a direct reference to the request-scoped managed bean via value binding.

In JDBC Sender Adapter , the server is Microsoft SQL .I need to pass current date as the input column while Executing stored procedure, which will get me 10 Output Columns. Kindly suggest me the SQL Query String

In JDBC Sender Adapter , the server is Microsoft SQL .I need to pass current date as the input column while Executing stored procedure, which will get me 10 Output Columns. Kindly suggest me the SQL Query String , for executing the Stored Procedure with Current date as the input .

Hi Srinath,
The below blog might be useful
http://scn.sap.com/community/pi-and-soa-middleware/blog/2013/03/06/executing-stored-procedure-from-sender-adapter-in-sap-pi-71
PI/XI: Sender JDBC adapter for Oracle stored procedures in 5 days
regards,
Harish

Command Link in the af:table Component can not Work in the Request Scope

Actually, the problem is that when we click on the command link, the action method #{overview.goToLinkAction} is not triggered.
Here is the codes of action method "goToLinkAction" on the backing bean:
public String goToLinkAction() {
String linkString = (String) AdfFacesContext.getCurrentInstance()
.getProcessScope().get("linkString");
System.out.println("Link String is: " + linkString);
return "";
The data object list "listOfTransefer" for af:table is composed first time when the page is initialized.
public void onPageLoad() {
this.listOfTransfers = composeListOfTransfers();
But when the commandlink or commandbutton is clicked to pose the form, this onPageLoad method is ignored by using PagePhaseListener:
public void beforePhase(PagePhaseEvent event) {
FacesPageLifecycleContext ctx =
(FacesPageLifecycleContext)event.getLifecycleContext();
if (event.getPhaseId() == Lifecycle.PREPARE_MODEL_ID && needReload()) {
bc = ctx.getBindingContainer();
onPageLoad();
bc = null;
public final boolean needReload() {
if (!isPostback())
return Boolean.TRUE;
else
return alwaysReload();
protected boolean isPostback() {
return Boolean.TRUE.equals(resolveExpression("#{adfFacesContext.postback}"));
That means the method "onPageLoad()" may not be invoked when the commandlink is clicked.
Is there any way to resolve this problem without changing the scope of the backing bean to "session"?
Your response will be very helpful for us.
Thanks

Hi,
if you implicitly say that this works if the managed bean is in session scope then the problems seems to me that one of your evaluation criterias is reset in the request scope, which I think most likely is the needReload() method. Did you add debug statements to the methods to see where exactly it gets stuck?
Frank

Flex + Sending ArrayCollection to Server + Request Scope

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