Af:Table data refresh without calling ManagedBean constructor

Hi,
I have an adf application jspx page where I have af:selectOneChoice and af:table showing default data. On selecting af:selectOneChoice value (assigned, completed etc.) I am calling managed bean method which calls task flow client api which gets the task details based on af:selectOneChoice value and show in the adf table.
When ever I change the af:selectOneChoice value, first it is callling 'valueChanged(ValueChangeEvent valueChangeEvent)' method in managed bean and able to get the records based on filter value(Example: Assigned). Issue is immediatly after that Managed bean constructor also calling which overrides the previous query and get the records based on default filter value (Example: All).
here is <af:selectOneChoice & <af:table code:
<af:selectOneChoice id="rsoc" autoSubmit="true"
binding="#{backingBeanScope.backing_taskdetails.rsoc}"
label="Status" valueChangeListener="#{backingBeanScope.backing_taskdetails.valueChanged}">
<f:selectItem itemValue="A" itemLabel="All" />
<f:selectItem itemValue="AG" itemLabel="Assigned" />
<f:selectItem itemValue="C" itemLabel="Completed" />
</af:selectOneChoice>
<af:table emptyText="#{bindings.taskList.viewable ? 'No data to display.' : 'Access Denied.'}"
var="row" columnStretching="multiple"
value="#{backingBeanScope.backing_taskdetails.taskList}"
immediate="false" rowSelection="single"
binding="#{backingBeanScope.backing_taskdetails.t1}"
id="t1"
inlineStyle="font-family:Arial, Helvetica, sans-serif; border:0pt none; "
partialTriggers="::rsoc">
Here partialTriggers is invoking managed bean. So Can I refresh only table data without calling managed bean constructor on selection of <af:selectOneChoice?
Any inputs will be highly appreciated. Thanks.

Hi,
Thanks for your reply.
here it is my adfc-config.xml file.
<?xml version="1.0" encoding="UTF-8" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
<managed-bean id="__2">
<managed-bean-name id="__3">backing_test</managed-bean-name>
<managed-bean-class id="__4">view.backing.Test</managed-bean-class>
<managed-bean-scope id="__1">backingBean</managed-bean-scope>

</managed-bean>
</adfc-config>
I am not using adf taskflow (Should I use this, I am not sure as I am new to ADF. Please suggest). My execution flow is I have 'Human Task SOA application' which I am calling from adf application (managed bean --> workflow cllient API --> Human Task SOA Application) and showing task details in cutom UI screens. I do not want to use BPM worklist application as I need my own screens.
thanks.

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Attachments:
TableDataInvisible.PNG ‏21 KB

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You also need to ensure OWA 2013 is not in WOPI mode for Excel worksheets. See the last link below for more information about WOPI.
Next you should go to the Excel Service App in CA and click Data Model Settings and add the <servername>\POWERPIVOT instance.
Then you have to either turn off the firewall on the SQL server machine, or create an inbound rule on the Windows firewall to open the TCP port for the <servername>\POWERPIVOT instance:
1. Start Task Manager and then click Services to get the PID of the MSOLAP$InstanceName.
2. Run netstat –ao –p TCP from the command line to view the TCP port information for that PID.
Finally, you can now create Excel 2013 workbooks that run in OWA without refresh errors, as long as you are connecting to the <servername>\POWERPIVOT instance. Hooray.
REFERENCES
Look for the string "There are no servers available or actively being initialized" in this article:
http://blogs.msdn.com/b/analysisservices/archive/2012/08/02/verifying-the-excel-services-configuration-for-powerpivot-in-sharepoint-2013.aspx
Determine the server mode:
http://msdn.microsoft.com/en-au/library/gg471594(v=sql.110).aspx
Install the SharePoint PowerPivot instance (aka SharePoint mode)
http://msdn.microsoft.com/en-au/library/eec38696-5e26-46fa-bc83-aa776f470ce8(v=sql.110)
Open the port for the new SQL instance:
http://msdn.microsoft.com/en-us/library/ms174937(v=sql.110).aspx
Turn Off WOPI for Excel OWA
http://blogs.technet.com/b/excel_services__powerpivot_for_sharepoint_support_blog/archive/2013/01/31/powerpivot-for-sharepoint-browser-refresh-fails-data-refresh-not-supported-in-office-web-apps.aspx

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