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Why does recursive ADF tree using 1 VO that uses context menus throw an ADF_FACES-60096 exception?

Kristof_2014Jun 11 2014 — edited Jun 19 2014

Hi there,

I am new to this forum, hope anyone can help!

I am trying to construct a recursive tree using 1 View Object (as described in the ADF Code Corner 32 by Frank Nimphius for which many thanks) that uses context menus.

Short problem description:

-the recursive tree using 1 VO works just fine

-when adding a context menu, I get an ADF_FACES-60096 exception

I have a simple table PRB_NODES (I removed the irrelevant parts from the Toad script)

CREATE TABLE PRB_NODES

(

ID NUMBER(10) NOT NULL,

PARENT_PBNO_ID NUMBER(10),

ARTIKELNUMMER VARCHAR2(50 BYTE),

OMSCHRIJVING CLOB,

)

ALTER TABLE PRB_NODES ADD (

CONSTRAINT PRB_PBNO_PK PRIMARY KEY (ID)

USING INDEX PRB_PBNO_PK ENABLE VALIDATE);

ALTER TABLE PRB_NODES ADD (

CONSTRAINT PRB_PBNO_PBNO_FK

FOREIGN KEY (PARENT_PBNO_ID) REFERENCES PRB_NODES (ID) ENABLE VALIDATE;

So there is a FK from PARENT_PBNO_ID back to the table itself, thus constructing the tree.

The FK in the DB results in an association from PARENT_PBNO_ID back to ID

I followed Frank's tutorial and the ADF tree works just fine.

Then however, I tried to add a context menu to the ADF tree "contextMenu" facet. I added a popup / menu / commandMenuItem named "Delete node", without any application logic yet.

When I run the application, open some nodes and right-click, I get the following error message:

java.lang.NullPointerException

ADF_FACES-60097:Zoek een ingang die begint met ADF_FACES-60096:Serveruitzondering tijdens PPR, nummer 2 in het foutenlog van de server voor meer informatie.

The stack in the JDeveloper screen:

<11-jun-2014 10.04 u. CEST> <Error> <oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter> <BEA-000000> <ADF_FACES-60096:Serveruitzondering tijdens PPR, nummer 2

java.lang.NullPointerException

at oracle.adfinternal.view.faces.model.binding.RowDataManager._getRowCount(RowDataManager.java:496)

at oracle.adfinternal.view.faces.model.binding.RowDataManager.getRowCount(RowDataManager.java:246)

at oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding$FacesModel.getRowCount(FacesCtrlHierBinding.java:909)

at org.apache.myfaces.trinidad.component.UIXCollection.getRowCount(UIXCollection.java:439)

at org.apache.myfaces.trinidad.model.ModelUtils.findLastIndex(ModelUtils.java:130)

at org.apache.myfaces.trinidad.component.TableUtils.getLast(TableUtils.java:85)

at org.apache.myfaces.trinidad.component.UIXHierarchy.visitHierarchy(UIXHierarchy.java:430)

at org.apache.myfaces.trinidad.component.UIXHierarchy.visitHierarchy(UIXHierarchy.java:454)

at org.apache.myfaces.trinidad.component.UIXTree.visitData(UIXTree.java:318)

at org.apache.myfaces.trinidad.component.UIXTree.visitChildren(UIXTree.java:303)

at oracle.adf.view.rich.component.rich.data.RichTree.visitChildren(RichTree.java:240)

at org.apache.myfaces.trinidad.component.UIXComponent.visitChildren(UIXComponent.java:703)

at org.apache.myfaces.trinidad.component.UIXComponent.visitTree(UIXComponent.java:566)