rssview-developers

[Rssview-developers] Completely confused display

[Norman W. <nd...@nw...>]

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Hi folks,

I added a couple of new feeds yesterday and suddenly the RSSView hierarchy
menu on the left hand side is completely confused. If I try to open the
"people" folder, I get:

Load Duration: 3781
java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.ArrayList.get(ArrayList.java:326)
	at de.cinek.rssview.RssSubscriptionModel.get(RssSubscriptionModel.java:104)
	at de.cinek.rssview.SubscriptionAdapterTreeModel.getChild(SubscriptionAdapterTreeModel.java:71)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1475)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1270)
	at javax.swing.tree.VariableHeightLayoutCache.ensurePathIsExpanded(VariableHeightLayoutCache.java:966)
	at javax.swing.tree.VariableHeightLayoutCache.setExpandedState(VariableHeightLayoutCache.java:164)
	at javax.swing.plaf.basic.BasicTreeUI.updateExpandedDescendants(BasicTreeUI.java:1494)
	at javax.swing.plaf.basic.BasicTreeUI$TreeExpansionHandler.treeExpanded(BasicTreeUI.java:2314)
	at javax.swing.JTree.fireTreeExpanded(JTree.java:2228)
	at javax.swing.JTree.setExpandedState(JTree.java:2999)
	at javax.swing.JTree.expandPath(JTree.java:1735)
	at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState(BasicTreeUI.java:2095)
	at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick(BasicTreeUI.java:2082)
	at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl(BasicTreeUI.java:2036)
	at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.handleSelection(BasicTreeUI.java:2831)
	at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.mousePressed(BasicTreeUI.java:2801)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.Component.processMouseEvent(Component.java:5097)
	at java.awt.Component.processEvent(Component.java:4897)
	at java.awt.Container.processEvent(Container.java:1569)
	at java.awt.Component.dispatchEventImpl(Component.java:3615)
	at java.awt.Container.dispatchEventImpl(Container.java:1627)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3195)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
	at java.awt.Container.dispatchEventImpl(Container.java:1613)
	at java.awt.Window.dispatchEventImpl(Window.java:1606)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
java.lang.ArrayIndexOutOfBoundsException: 10 >= 6
	at java.util.Vector.removeElementAt(Vector.java:517)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.collapse(VariableHeightLayoutCache.java:1583)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.collapse(VariableHeightLayoutCache.java:1277)
	at javax.swing.tree.VariableHeightLayoutCache.setExpandedState(VariableHeightLayoutCache.java:170)
	at javax.swing.plaf.basic.BasicTreeUI$TreeExpansionHandler.treeCollapsed(BasicTreeUI.java:2327)
	at javax.swing.JTree.fireTreeCollapsed(JTree.java:2259)
	at javax.swing.JTree.setExpandedState(JTree.java:2975)
	at javax.swing.JTree.collapsePath(JTree.java:1760)
	at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState(BasicTreeUI.java:2106)
	at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick(BasicTreeUI.java:2082)
	at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl(BasicTreeUI.java:2036)
	at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.handleSelection(BasicTreeUI.java:2831)
	at javax.swing.plaf.basic.BasicTreeUI$MouseHandler.mouseReleased(BasicTreeUI.java:2864)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:232)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
	at java.awt.Component.processMouseEvent(Component.java:5100)
	at java.awt.Component.processEvent(Component.java:4897)
	at java.awt.Container.processEvent(Container.java:1569)
	at java.awt.Component.dispatchEventImpl(Component.java:3615)
	at java.awt.Container.dispatchEventImpl(Container.java:1627)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
	at java.awt.Container.dispatchEventImpl(Container.java:1613)
	at java.awt.Window.dispatchEventImpl(Window.java:1606)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
Persist Duration: 3624

Hopefully, you can reproduce this with my .rssviewdb databases and my .rssviewrc
file: http://norman.walsh.name/scratch/rssview-snapshot.tar.gz

                                        Be seeing you,
                                          norm

- -- 
Norman Walsh <nd...@nw...> | When one admits that nothing is certain
http://nwalsh.com/            | one must, I think, also admit that some
                              | things are much more nearly certain
                              | than others.--Bertrand Russell
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Re: [Rssview-developers] Completely confused display

[Martin K. <ci...@gm...>]

On Fri, 2003-08-22 at 11:53, Norman Walsh wrote:
> java.lang.ArrayIndexOutOfBoundsException: -1
> 	at java.util.ArrayList.get(ArrayList.java:326)
> 	at de.cinek.rssview.RssSubscriptionModel.get(RssSubscriptionModel.java:104)
> 	at de.cinek.rssview.SubscriptionAdapterTreeModel.getChild(SubscriptionAdapterTreeModel.java:71)

I can reproduce it. It appears after opening the "People" node. This
is the tree structure which returns a "not found" for a child node.

I didn't write this part of code. After doing some debugging, I could
locate the piece of code causing the error:

1: if (groupParent.isLeaf(index)) {
2:   // Stored id -> lookup in Model and return a real value!
3:   Object id = groupParent.getChildAt(index);
4:   return model.get(model.indexOf(id));
5: } else {
6:   return groupParent.getChildAt(index);
7: }

The id returned in line 3 is valid. I printed out this value
and I could not find it in the whole database. I wonder where
it comes from... And in line 4 model.indexOf() returns -1.
I think indexOf() is not in our sources, but calls another
method from the tree model transparently, so I have some 
trouble to find it.

Perhaps something got deleted and it was not released
properly (are foreign keys being used in our database?
It would prevent deletion of parent nodes while children
still exist)?

Perhaps the id is calculated somewhere and it has the wrong
value (the id which causes the error is 2 digits shorter than
the others)?

Perhaps I can find out more later.

Martin

RE: [Rssview-developers] Completely confused display

[Christoph W. <e93...@st...>]

Hi,

I'll try to locate the root of that problem over the weekend - I have some
ideas what went wrong but had no time to try out and debug your
configuration.

Ciao
Christoph

--
Christoph Walcher            Email: chr...@we...
Max-Winter-Platz 7/16     	 Tel: +43 (1) 9460866
A-1020 Vienna                Mobil: +43 (699) 194609867



> -----Original Message-----
> From: rss...@li... 
> [mailto:rss...@li...] On 
> Behalf Of Martin Krzysiak
> Sent: Friday, August 22, 2003 5:51 PM
> To: RSSView Developers
> Subject: Re: [Rssview-developers] Completely confused display
> 
> 
> On Fri, 2003-08-22 at 11:53, Norman Walsh wrote:
> > java.lang.ArrayIndexOutOfBoundsException: -1
> > 	at java.util.ArrayList.get(ArrayList.java:326)
> > 	at 
> de.cinek.rssview.RssSubscriptionModel.get(RssSubscriptionModel
> .java:104)
> > 	at 
> de.cinek.rssview.SubscriptionAdapterTreeModel.getChild(Subscri
> ptionAdapterTreeModel.java:71)
> 
> I can reproduce it. It appears after opening the "People" node. This
> is the tree structure which returns a "not found" for a child node.
> 
> I didn't write this part of code. After doing some debugging, I could
> locate the piece of code causing the error:
> 
> 1: if (groupParent.isLeaf(index)) {
> 2:   // Stored id -> lookup in Model and return a real value!
> 3:   Object id = groupParent.getChildAt(index);
> 4:   return model.get(model.indexOf(id));
> 5: } else {
> 6:   return groupParent.getChildAt(index);
> 7: }
> 
> The id returned in line 3 is valid. I printed out this value
> and I could not find it in the whole database. I wonder where
> it comes from... And in line 4 model.indexOf() returns -1.
> I think indexOf() is not in our sources, but calls another
> method from the tree model transparently, so I have some 
> trouble to find it.
> 
> Perhaps something got deleted and it was not released
> properly (are foreign keys being used in our database?
> It would prevent deletion of parent nodes while children
> still exist)?
> 
> Perhaps the id is calculated somewhere and it has the wrong
> value (the id which causes the error is 2 digits shorter than
> the others)?
> 
> Perhaps I can find out more later.
> 
> Martin
> 
> 
> 
> 
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