Tag Archives: invalidate

Could not Deserialize the session data


Recently there was an issue with the session not getting invalidated upon logging out in adf page. we were using the following code to invalidate the session in the logout method


FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
HttpServletRequest req = (HttpServletRequest) ec.getRequest();
HttpServletResponse res = (HttpServletResponse) ec.getResponse();
HttpSession ses = (HttpSession) req.getSession(false);
ses.invalidate();
res.sendRedirect(target);
fc.responseComplete();

with the above code the following exception was thrown to the user


java.lang.NullPointerException
 at oracle.adf.share.http.HttpUtil.getAttribute(HttpUtil.java:98)
 at oracle.adf.share.http.HttpSessionScopeAdapter.get(HttpSessionScopeAdapter.java:240)
 at oracle.jbo.common.ampool.SessionCookieImpl.<init>(SessionCookieImpl.java:164)
 at oracle.jbo.http.HttpSessionCookieImpl.<init>(HttpSessionCookieImpl.java:133)
 at oracle.jbo.http.HttpSessionCookieImpl.<init>(HttpSessionCookieImpl.java:124)
 at oracle.jbo.http.HttpSessionCookieFactory.createSessionCookie(HttpSessionCookieFactory.java:131)
 at oracle.jbo.common.ampool.ApplicationPoolImpl.createSessionCookie(ApplicationPoolImpl.java:452)
 at oracle.adf.model.bc4j.DataControlFactoryImpl.findOrCreateSessionCookie(DataControlFactoryImpl.java:141)
 at oracle.adf.model.bc4j.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:222)
 at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:76)
 at oracle.adf.model.BindingContext.get(BindingContext.java:457)
 at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:280)
 at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:248)
 at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:383)
 at oracle.adf.model.binding.DCIteratorBinding.<init>(DCIteratorBinding.java:127)
 at oracle.jbo.uicli.binding.JUIteratorBinding.<init>(JUIteratorBinding.java:60)

the issue is solved using the solution given in this forum
https://cn.forums.oracle.com/forums/thread.jspa?threadID=663589

ie. we have to release the Datacontrol also to invalidate the session

...
ValueBinding vb = fc.getCurrentInstance().getApplication().createValueBinding("#{data}");
BindingContext bc = (BindingContext)vb.getValue(fc.getCurrentInstance());
DataControl dc = bc.findDataControl("DataControl");
dc.release(DataControl.REL_ALL_REFS);
..
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oracle.jbo.InvalidOwnerException


oracle.jbo.InvalidOwnerException: JBO-25030: Failed to find or invalidate
owning entity: detail entity Emp, row key oracle.jbo.Key[-5 ].
at oracle.jbo.server.EntityImpl.internalCreate(EntityImpl.java:1048)
at oracle.jbo.server.EntityImpl.create(EntityImpl.java:811)

if you the above exception whn u create master /detail table then do the following

  1. Cascade Update Key Attributes” in association should be checked
  2. In viewRowImpl add
@Override
public void setNewRowState(byte state) {
 if (state != Row.STATUS_INITIALIZED || getNewRowState() != Row.STATUS_NEW) {
 super.setNewRowState(state);
 }
}