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null pointer exception when opening custom-made composites [message #65833]

Sat, 09 October 2004 16:59

Andrei Adrian

Messages: 7
Registered: July 2009

Junior Member

FYI...

Hi there,

I have (from Eclipse 2.1) composites that were developed with other
graphical editors and I
try to open these with VE 1.0.1. I've got null pointer expception:
!ENTRY org.eclipse.ve.java.core 4 0 Oct 09, 2004 12:54:38.00
!MESSAGE Exception thrown.
!STACK 0
java.lang.NullPointerException
at
org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting Delegate(EStructuralFeatureImpl.java:780)
at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate (BasicEObjectImpl.java:810)
at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicIsSet(Ba sicEObjectImpl.java:597)
at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eIsSet(BasicEObj ectImpl.java:588)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:583)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
at
org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr opagate(InverseMaintenanceAdapter.java:560)
at
org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEd itorPart$Setup.run(JavaVisualEditorPart.java:1471)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)

Regards,
AA

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Re: null pointer exception when opening custom-made composites [message #65854 is a reply to message #65833]

Sat, 09 October 2004 18:12

Eclipse User

Originally posted by: myersj.nospam.gmail.com

Hi aandrei,

Could you provide a sample of source code that causes this error?

Thanks,
- Jeff

aandrei wrote:
> FYI...
>
> Hi there,
>
> I have (from Eclipse 2.1) composites that were developed with other
> graphical editors and I
> try to open these with VE 1.0.1. I've got null pointer expception:
> !ENTRY org.eclipse.ve.java.core 4 0 Oct 09, 2004 12:54:38.00
> !MESSAGE Exception thrown.
> !STACK 0
> java.lang.NullPointerException
> at
> org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting Delegate(EStructuralFeatureImpl.java:780)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate (BasicEObjectImpl.java:810)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicIsSet(Ba sicEObjectImpl.java:597)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eIsSet(BasicEObj ectImpl.java:588)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:583)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr opagate(InverseMaintenanceAdapter.java:560)
> at
> org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEd itorPart$Setup.run(JavaVisualEditorPart.java:1471)
> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)
>
> Regards,
> AA
>
>

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Re: null pointer exception when opening custom-made composites [message #65885 is a reply to message #65854]

Sat, 09 October 2004 20:57

Andrei Adrian

Messages: 7
Registered: July 2009

Junior Member

Jeff,

Here it is (was created through Instantiations editor for Eclipse 2.1):
============================================================ ============
package xxx.composite;

import java.util.Map;

import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;

import xxx.model.OutputMapContentProvider;
import xxx.OutputMapLabelProvider;

/**
* Class Outliner implementation.
*
* @author aandrei
* @version $Revision$
*/
public class Outliner extends Composite {
/**
* Field m_treeViewer
*/
private TreeViewer m_treeViewer;
/**
* Field m_contentProvider
*/
private OutputMapContentProvider m_contentProvider = new
OutputMapContentProvider();
/**
* Field m_labelProvider
*/
private OutputMapLabelProvider m_labelProvider = new
OutputMapLabelProvider();

public Outliner(Composite arg0, int arg1) {
super(arg0, arg1);
setLayout(new FormLayout());
createContents();
}

/**
* Method createContents
*/
public void createContents() {
Composite composite = new Composite(this, SWT.NONE);
composite.setLayout(new FillLayout());
final FormData formData = new FormData();
formData.bottom = new FormAttachment(100, 0);
formData.right = new FormAttachment(100, 0);
formData.top = new FormAttachment(0, 0);
formData.left = new FormAttachment(0, 0);
composite.setLayoutData(formData);
{
m_treeViewer = new TreeViewer(composite, SWT.BORDER);
m_treeViewer.setLabelProvider(m_labelProvider);
m_treeViewer.setContentProvider(m_contentProvider);
}
}

public void setContent(Map outputMap) {
m_treeViewer.setInput(outputMap);
}

/**
* Sets the content owner. It acts like a key so the controller knows when
* to refresh it or not. To release the owner a call with null argument
* should be placed.
*
* @param key Object - can be null
*/
public void setOwner(Object key) {
setData(key);
}

/**
* Returns true if the content has the same key as the argument. The
* comparison if done using equal for a non-null argument.
*
* @param key Object - owner's key, can be null. If null it returns if
* the content has no key.
*
* @return true if the content has the same as the argument
*/
public boolean isOwner(Object key) {
if(key == null) {
return getData()==null;
} else {
return key.equals(key);
}
}

/**
* Sets the outliner content empty, resets the owner.
*/
public void setNoContent() {
setOwner(null);
m_treeViewer.setInput(null);
}

/**
* Delegates the double click listener.
*
* @param arg0 IDoubleClickListener - new event
*/
public void addContentDoubleClickListener(IDoubleClickListener arg0) {
m_treeViewer.addDoubleClickListener(arg0);
}

}
============================================================ =========================

"Jeff Myers" <myersj@nospam.gmail.com> wrote in message
news:ck99b2$168$1@eclipse.org...
> Hi aandrei,
>
> Could you provide a sample of source code that causes this error?
>
> Thanks,
> - Jeff
>
> aandrei wrote:
>> FYI...
>>
>> Hi there,
>>
>> I have (from Eclipse 2.1) composites that were developed with other
>> graphical editors and I
>> try to open these with VE 1.0.1. I've got null pointer expception:
>> !ENTRY org.eclipse.ve.java.core 4 0 Oct 09, 2004 12:54:38.00
>> !MESSAGE Exception thrown.
>> !STACK 0
>> java.lang.NullPointerException
>> at
>> org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting Delegate(EStructuralFeatureImpl.java:780)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate (BasicEObjectImpl.java:810)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicIsSet(Ba sicEObjectImpl.java:597)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eIsSet(BasicEObj ectImpl.java:588)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:583)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
>> at
>> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr opagate(InverseMaintenanceAdapter.java:560)
>> at
>> org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEd itorPart$Setup.run(JavaVisualEditorPart.java:1471)
>> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)
>>
>> Regards,
>> AA
>>

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Re: null pointer exception when opening custom-made composites [message #66067 is a reply to message #65885]

Mon, 11 October 2004 16:44

Eclipse User

Originally posted by: richkulp.us.NO_SPAM.ibm.com

Please open a bugzilla. I was able to reproduce it using your code.

However, be aware that currently we don't parse the format given because
of the createContents(). We don't know about "createContents". We know
about "initialize" so if when fix the bug, you could rename
createContents to be initialize. However, we don't know about TreeViewer
yet. We don't support JFace at this time.

--
Thanks,
Rich Kulp

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Re: null pointer exception when opening custom-made composites [message #601132 is a reply to message #65833]

Sat, 09 October 2004 18:12

Jeff Myers

Messages: 396
Registered: July 2009

Senior Member

Hi aandrei,

Could you provide a sample of source code that causes this error?

Thanks,
- Jeff

aandrei wrote:
> FYI...
>
> Hi there,
>
> I have (from Eclipse 2.1) composites that were developed with other
> graphical editors and I
> try to open these with VE 1.0.1. I've got null pointer expception:
> !ENTRY org.eclipse.ve.java.core 4 0 Oct 09, 2004 12:54:38.00
> !MESSAGE Exception thrown.
> !STACK 0
> java.lang.NullPointerException
> at
> org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting Delegate(EStructuralFeatureImpl.java:780)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate (BasicEObjectImpl.java:810)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicIsSet(Ba sicEObjectImpl.java:597)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eIsSet(BasicEObj ectImpl.java:588)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:583)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.ha ndleAddRef(InverseMaintenanceAdapter.java:426)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr imPropagate(InverseMaintenanceAdapter.java:587)
> at
> org.eclipse.ve.internal.cde.emf.InverseMaintenanceAdapter.pr opagate(InverseMaintenanceAdapter.java:560)
> at
> org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEd itorPart$Setup.run(JavaVisualEditorPart.java:1471)
> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)
>
> Regards,
> AA
>
>

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