Display of the name and save the value in the database for a LOV

Hi Experts,

JDEV 12 C,

I have a requirement where I need to show the name of the project in the user interface and save the project in DB Id.

I've had two articles as below: -.

http://husaindalal.blogspot.in/2010/03/lov-displaying-name-and-storing-value.html

https://blogs.Oracle.com/ADF/entry/combo_lov_how_to_display

I did the procedure below.

I have a ProjectId attribute in my VO.

Created a transient ProjectName attribute, passivation = true editable = always.

Created a ViewAccessor on the MainVO.

Created a LOV on ProjectName ProjectName mapped in the configuration to the accessor of the view section with ProjectId.

Changed the ViewRowImpl.java.

I get the error when you run the below request form.

public String getProjectName() {}

Object projectId = getAttributeInternal (PROJECTID);

String projectName = null;

If (projectId! = null) {}

Object [] obj = {projectId};

Key = new Key (obj);

Line lines [] = getProjectsVO1 () .findByKey (key, 1);

If (rows! = null & & rows.length > 0) {}

projectName = (String) rows [0] .getAttribute (1);

}

back to projectName.

}

When AM running I get the below error.

oracle.jbo.JboException: Houston-29000: Unexpected exception caught: java.lang.NullPointerException, msg = null

at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:421)

at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:483)

at oracle.jbo.jbotester.panel.BindingPanel.setBindingContext(BindingPanel.java:144)

to oracle.jbo.jbotester.panel.BindingPanel. < init > (BindingPanel.java:108)

to oracle.jbo.jbotester.panel.BindingPanel. < init > (BindingPanel.java:81)

at oracle.jbo.jbotester.form.BindingForm.createMasterPanel(BindingForm.java:90)

at oracle.jbo.jbotester.form.BindingForm.init(BindingForm.java:166)

to oracle.jbo.jbotester.form.JTForm. < init > (JTForm.java:77)

to oracle.jbo.jbotester.form.BindingForm. < init > (BindingForm.java:77)

to oracle.jbo.jbotester.form.FormType$ 1.createForm(FormType.java:78)

at oracle.jbo.jbotester.form.FormType.createForm(FormType.java:236)

at oracle.jbo.jbotester.form.FormType.createTab(FormType.java:307)

at oracle.jbo.jbotester.form.FormType.showForm(FormType.java:285)

at oracle.jbo.jbotester.form.FormType.showForm(FormType.java:244)

at oracle.jbo.jbotester.form.FormType.showForm(FormType.java:240)

at oracle.jbo.jbotester.tree.ObjTreeNode.showForm(ObjTreeNode.java:149)

at oracle.jbo.jbotester.tree.ObjTreeNode.showForm(ObjTreeNode.java:132)

at oracle.jbo.jbotester.tree.Tree.processTreeMouseClicked(Tree.java:742)

in oracle.jbo.jbotester.tree.Tree.access$ 100 (Tree.java:98)

to oracle.jbo.jbotester.tree.Tree$ TreeMouseListener.mouseClicked (Tree.java:152)

at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)

at java.awt.Component.processMouseEvent(Component.java:6508)

at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)

at java.awt.Component.processEvent(Component.java:6270)

at java.awt.Container.processEvent(Container.java:2229)

at java.awt.Component.dispatchEventImpl(Component.java:4861)

at java.awt.Container.dispatchEventImpl(Container.java:2287)

at java.awt.Component.dispatchEvent(Component.java:4687)

at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)

at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4501)

at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)

at java.awt.Container.dispatchEventImpl(Container.java:2273)

at java.awt.Window.dispatchEventImpl(Window.java:2719)

at java.awt.Component.dispatchEvent(Component.java:4687)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)

at $200 (EventQueue.java:103) java.awt.EventQueue.access

in java.awt.EventQueue$ 3.run(EventQueue.java:694)

in java.awt.EventQueue$ 3.run(EventQueue.java:692)

at java.security.AccessController.doPrivileged (Native Method)

in java.security.ProtectionDomain$ 1.doIntersectionPrivilege(ProtectionDomain.java:76)

in java.security.ProtectionDomain$ 1.doIntersectionPrivilege(ProtectionDomain.java:87)

in java.awt.EventQueue$ 4.run(EventQueue.java:708)

in java.awt.EventQueue$ 4.run(EventQueue.java:706)

at java.security.AccessController.doPrivileged (Native Method)

in java.security.ProtectionDomain$ 1.doIntersectionPrivilege(ProtectionDomain.java:76)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Caused by: java.lang.NullPointerException

at oracle.jbo.uicli.jui.JULovButtonBinding.getDisplayAttrValue(JULovButtonBinding.java:1509)

at oracle.jbo.uicli.jui.JULovButtonBinding.buildDisplayValue(JULovButtonBinding.java:1493)

to oracle.jbo.uicli.controls.JULovEditButton$ TextFieldBinding.setValueAt (JULovEditButton.java:186)

at oracle.jbo.uicli.binding.JUCtrlAttrsBinding.updateValuesFromRow(JUCtrlAttrsBinding.java:145)

at oracle.jbo.uicli.binding.JUCtrlAttrsBinding.refreshControl(JUCtrlAttrsBinding.java:245)

at oracle.jbo.uicli.jui.JULovButtonBinding.refreshControl(JULovButtonBinding.java:1228)

at oracle.jbo.jbotester.app.FieldFactory.createField(FieldFactory.java:222)

at oracle.jbo.jbotester.app.FieldFactory.createField(FieldFactory.java:147)

at oracle.jbo.jbotester.panel.BindingPanel.createField(BindingPanel.java:178)

at oracle.jbo.jbotester.panel.CardPanel.showAttributeDefs(CardPanel.java:227)

at oracle.jbo.jbotester.panel.CardPanel.showAttributeDefs(CardPanel.java:185)

to oracle.jbo.jbotester.panel.CardPanel. < init > (CardPanel.java:114)

to oracle.jbo.jbotester.panel.CardPanel. < init > (CardPanel.java:103)

at oracle.jbo.jbotester.panel.RowSetPanel.showCard(RowSetPanel.java:237)

at oracle.jbo.jbotester.panel.RowSetPanel.setIterator(RowSetPanel.java:107)

at oracle.jbo.jbotester.panel.BindingPanel.setBindingContext(BindingPanel.java:141)

... more than 49

# # 0 in detail

java.lang.NullPointerException