Target Unreachable -identifier row resolved to null ADF_FACES-60097

Sharing is Caring

“row resolved to null” in ADF Faces- is one of the most harassing bugs, and still there is no proper reason or solution for it.
Recently I was working on an ADF application and this error occurs. I was not able to find the root cause. It looks like that application has crashed

row resolved to null

and log on console-

<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase APPLY_REQUEST_VALUES 2
javax.el.PropertyNotFoundException: Target Unreachable, identifier 'row' resolved to null
 at com.sun.el.parser.AstValue.getTarget(Unknown Source)
 at com.sun.el.parser.AstValue.isReadOnly(Unknown Source)
 at com.sun.el.ValueExpressionImpl.isReadOnly(Unknown Source)
 at oracle.adfinternal.view.faces.renderkit.rich.EditableValueRenderer._getUncachedReadOnly(EditableValueRenderer.java:476)
 at oracle.adfinternal.view.faces.renderkit.rich.EditableValueRenderer.getReadOnly(EditableValueRenderer.java:390)
 at oracle.adfinternal.view.faces.renderkit.rich.EditableValueRenderer.wasSubmitted(EditableValueRenderer.java:345)
 at oracle.adfinternal.view.faces.renderkit.rich.EditableValueRenderer.decodeInternal(EditableValueRenderer.java:116)
 at oracle.adfinternal.view.faces.renderkit.rich.SimpleInputDateRenderer.decodeInternal(SimpleInputDateRenderer.java:72)
 at oracle.adfinternal.view.faces.renderkit.rich.LabeledInputRenderer.decodeInternal(LabeledInputRenderer.java:56)
 at oracle.adf.view.rich.render.RichRenderer.decode(RichRenderer.java:342)
 at org.apache.myfaces.trinidad.render.CoreRenderer.decode(CoreRenderer.java:292)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.__rendererDecode(UIXComponentBase.java:1334)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.decode(UIXComponentBase.java:865)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.processDecodes(UIXComponentBase.java:965)
 at org.apache.myfaces.trinidad.component.UIXEditableValue.processDecodes(UIXEditableValue.java:287)
 at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl$ApplyRequestValuesCallback.invokeContextCallback(LifecycleImpl.java:1548)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1735)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1750)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXCollection.invokeOnComponent(UIXCollection.java:1215)
 at oracle.adf.view.rich.component.rich.data.RichTable.invokeOnComponent(RichTable.java:620)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1750)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1750)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnNamingContainerComponent(UIXComponentBase.java:1693)
 at oracle.adf.view.rich.component.fragment.UIXRegion.invokeOnComponent(UIXRegion.java:625)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1750)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents(UIXComponentBase.java:1627)
 at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1750)
 at org.apache.myfaces.trinidad.component.UIXDocument.invokeOnComponent(UIXDocument.java:106)
 at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:1299)
 at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:677)
 at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:374)
 at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:204)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
 at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
 at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
 at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
 at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:173)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:122)
 at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:468)
 at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
 at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:468)
 at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:293)
 at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:199)
 at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
 at java.security.AccessController.doPrivileged(Native Method)
 at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
 at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
 at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
 at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
 at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
 at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
 at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
 at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
 at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
 at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
 at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
<RegistrationConfigurator> <handleError> ADF_FACES-60096:Server Exception during PPR, #1
javax.el.PropertyNotFoundException: Target Unreachable, identifier 'row' resolved to null

after a lot of probing- finally, I have fixed it and sharing same.

Possible Causes-

  • Mainly occurs in editable af:table
  • Problem with Primary Key
  • af:column’s component’s property is being used in any EL, inside or outside of the table

Exp- #{row.bindings.xyz.inputValue==0} 

  • An updateable primary key attribute with autosubmit true
  • Editable List of Values (Lov) in primary key attribute

Possible Solution –

  • Never use primary key as an updateable column in af:table, if you have to use then remove primary key from Entity Object
  • Try to validate in RowImpl instead of Expression of Table
  • Surrogate Primary Key
  • Avoid LOV (List of Values) on the primary key
  • Change Event Policy of af:table and iterator to none

These solutions are not rules or conventions, you can only try and check, and may one of it will work for you.

There are many other points like this in Oracle ADF, If you want to learn more about framework then go through other posts.

Cheers 🙂 Happy Learning

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I’m an Oracle ACE, Blogger, Reviewer,
Technical Lead working on Oracle ADF

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