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Posted to users@myfaces.apache.org by Sean Schofield <se...@gmail.com> on 2005/03/31 15:55:00 UTC
Fwd: getNodeId() returning null in tree2
---------- Forwarded message ----------
From: Jon Travis <jt...@p00p.org>
Date: Wed, 30 Mar 2005 17:32:19 -0800
Subject: getNodeId() returning null in tree2
To: Sean Schofield <se...@gmail.com>
Hey Sean,
Hope this isn't a braindead question, but:
I'm getting a NPE in the tree2 code when there is
no node that is selected & I am expanding/collapsing.
Basically it comes about when HtmlTree.isNodeSelected
is run -- getNodeId() returns false, then kaboom.
Thoughts?
-- Jon
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
I have no objection to add a binding attribute. That could be very
useful in handling of the situations not already covered by the tree.
You could write an action listener and give it a reference to the tree
so you can check the current node id, etc.
Here is a link that might help with CVS patches:
http://cocoon.apache.org/2.1/howto/howto-patch.html
Let me know if you have trouble with it. There are nightly builds
available too so you don't have to use CVS. Consider using the CVS
source though (at least for helping with patches) because that is what
all of the power users are using. If you still have trouble just send
me the modified files (use the most recent nightly) and I can take
care of it.
sean
On Mar 31, 2005 4:32 PM, Jon Travis <jt...@p00p.org> wrote:
> It would also be nice if tree2 supported the 'binding'
> attribute like a lot of other components. I would
> contribute patches, but I haven't been running out of
> CVS.
>
> -- Jon
>
> On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
>
> > Jon,
> >
> > When you say getNodeId returns false, do you mean the string value
> > "false"? That method returns a String so I'm a bit confused. How do
> > you know the id is "false"? Are you doing a debug statement?
> >
> > Please clarify so I can try and help you. Also, what is the exact
> > line where the NPE occurs? Is it the return statement in
> > isNodeExpanded? If so (and if you have a debugger) it would be
> > helpful to know which value is null.
> >
> > Regards,
> > sean
> >
> > ps. I forwarded this to the myfaces list in case anyone else has the
> > same problem. These messages are also archived so if someone has the
> > same question in the future they can get information by doing a quick
> > search.
> >
> >
> > On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> > <se...@gmail.com> wrote:
> >> ---------- Forwarded message ----------
> >> From: Jon Travis <jt...@p00p.org>
> >> Date: Wed, 30 Mar 2005 17:32:19 -0800
> >> Subject: getNodeId() returning null in tree2
> >> To: Sean Schofield <se...@gmail.com>
> >>
> >> Hey Sean,
> >>
> >> Hope this isn't a braindead question, but:
> >>
> >> I'm getting a NPE in the tree2 code when there is
> >> no node that is selected & I am expanding/collapsing.
> >>
> >> Basically it comes about when HtmlTree.isNodeSelected
> >> is run -- getNodeId() returns false, then kaboom.
> >>
> >> Thoughts?
> >>
> >> -- Jon
> >>
> >
> >
>
>
Re: getNodeId() returning null in tree2
Posted by Jon Travis <jt...@p00p.org>.
It would also be nice if tree2 supported the 'binding'
attribute like a lot of other components. I would
contribute patches, but I haven't been running out of
CVS.
-- Jon
On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
> Jon,
>
> When you say getNodeId returns false, do you mean the string value
> "false"? That method returns a String so I'm a bit confused. How do
> you know the id is "false"? Are you doing a debug statement?
>
> Please clarify so I can try and help you. Also, what is the exact
> line where the NPE occurs? Is it the return statement in
> isNodeExpanded? If so (and if you have a debugger) it would be
> helpful to know which value is null.
>
> Regards,
> sean
>
> ps. I forwarded this to the myfaces list in case anyone else has the
> same problem. These messages are also archived so if someone has the
> same question in the future they can get information by doing a quick
> search.
>
>
> On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> <se...@gmail.com> wrote:
>> ---------- Forwarded message ----------
>> From: Jon Travis <jt...@p00p.org>
>> Date: Wed, 30 Mar 2005 17:32:19 -0800
>> Subject: getNodeId() returning null in tree2
>> To: Sean Schofield <se...@gmail.com>
>>
>> Hey Sean,
>>
>> Hope this isn't a braindead question, but:
>>
>> I'm getting a NPE in the tree2 code when there is
>> no node that is selected & I am expanding/collapsing.
>>
>> Basically it comes about when HtmlTree.isNodeSelected
>> is run -- getNodeId() returns false, then kaboom.
>>
>> Thoughts?
>>
>> -- Jon
>>
>
>
Re: getNodeId() returning null in tree2
Posted by Jon Travis <jt...@p00p.org>.
My data isn't changing. This only manifests itself
when I'm using the server-side tree, BTW. Client-side
everything works peachy.
-- Jon
On Apr 2, 2005, at 10:14 AM, Rob Decker wrote:
> I don't think it has to do with any mutation in the tree. I think that
> the
> isNodeSelected method is simply being called before the nodeId has
> been set
> on the object. It gets called again later when the nodeId is set. I
> tested
> the fix I put in the bug report and it had no side effects. The
> processing
> of the jsp page must iterate over the tags a number of times and in the
> early iterations the components are not yet fully initialized.
>
> Rob
>
> ----- Original Message -----
> From: "Sean Schofield" <se...@gmail.com>
> To: "MyFaces Discussion" <my...@incubator.apache.org>
> Sent: Saturday, April 02, 2005 1:00 PM
> Subject: Re: getNodeId() returning null in tree2
>
>
>> Are we sure that is it? This would imply that the structure of his
>> tree is changing between posts. That was the problem in MYFACES-160
>> but you had a pretty unusual case where you simulating the tree
>> changing between *every* post.
>>
>> Jon, does this sound like it applies to you? Is your data changing
>> between posts?
>>
>> sean
>>
>>
>> On Apr 1, 2005 10:09 PM, Rob Decker <ro...@objectsource.org> wrote:
>>> This is the bug I reported about isNodeSelected() throwing a
>>> NullPointerException because getNodeId() returns a null nodeId.
>>> http://issues.apache.org/jira/browse/MYFACES-160
>>>
>>> I put the fix in the bug report. It's null because it hasn't been set
> yet.
>>>
>>>
>>> ----- Original Message -----
>>> From: "Sean Schofield" <se...@gmail.com>
>>> To: "MyFaces Discussion" <my...@incubator.apache.org>
>>> Sent: Friday, April 01, 2005 9:30 PM
>>> Subject: Re: getNodeId() returning null in tree2
>>>
>>>> I still need some time to think about what the problem might be. I
>>>> have a lot of personal stuff going on that's keeping me busy at the
>>>> moment. Plus I am working on some stuff related to the new website,
>>>> etc.
>>>>
>>>> I will get back to you shortly though.
>>>>
>>>> sean
>>>>
>>>>
>>>> On Mar 31, 2005 4:30 PM, Jon Travis <jt...@p00p.org> wrote:
>>>>> Ack!
>>>>>
>>>>> Replace 'false' with null (hence the NPE).
>>>>>
>>>>> The NPE occurs in HtmlTree.isNodeSelected() -- it
>>>>> does:
>>>>>
>>>>> return getNodeId().equals(_selectedNodeId)
>>>>>
>>>>> getNodeId() returns false. Up the stack, this
>>>>> is being called from DebugUtils.printComponent.
>>>>>
>>>>> -- Jon
>>>>>
>>>>>
>>>>> On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
>>>>>
>>>>>> Jon,
>>>>>>
>>>>>> When you say getNodeId returns false, do you mean the string value
>>>>>> "false"? That method returns a String so I'm a bit confused. How
> do
>>>>>> you know the id is "false"? Are you doing a debug statement?
>>>>>>
>>>>>> Please clarify so I can try and help you. Also, what is the exact
>>>>>> line where the NPE occurs? Is it the return statement in
>>>>>> isNodeExpanded? If so (and if you have a debugger) it would be
>>>>>> helpful to know which value is null.
>>>>>>
>>>>>> Regards,
>>>>>> sean
>>>>>>
>>>>>> ps. I forwarded this to the myfaces list in case anyone else has
> the
>>>>>> same problem. These messages are also archived so if someone has
> the
>>>>>> same question in the future they can get information by doing a
> quick
>>>>>> search.
>>>>>>
>>>>>>
>>>>>> On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
>>>>>> <se...@gmail.com> wrote:
>>>>>>> ---------- Forwarded message ----------
>>>>>>> From: Jon Travis <jt...@p00p.org>
>>>>>>> Date: Wed, 30 Mar 2005 17:32:19 -0800
>>>>>>> Subject: getNodeId() returning null in tree2
>>>>>>> To: Sean Schofield <se...@gmail.com>
>>>>>>>
>>>>>>> Hey Sean,
>>>>>>>
>>>>>>> Hope this isn't a braindead question, but:
>>>>>>>
>>>>>>> I'm getting a NPE in the tree2 code when there is
>>>>>>> no node that is selected & I am expanding/collapsing.
>>>>>>>
>>>>>>> Basically it comes about when HtmlTree.isNodeSelected
>>>>>>> is run -- getNodeId() returns false, then kaboom.
>>>>>>>
>>>>>>> Thoughts?
>>>>>>>
>>>>>>> -- Jon
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>
>>>
>
>
>
Re: getNodeId() returning null in tree2
Posted by Rob Decker <ro...@objectsource.org>.
Maybe you don't have logging turned on for the package? I'm using log4j and
have the myfaces package set to ERROR. I think it only happens with
server-side processing too.
Rob
----- Original Message -----
From: "Sean Schofield" <se...@gmail.com>
To: "MyFaces Discussion" <my...@incubator.apache.org>
Sent: Sunday, April 03, 2005 10:27 PM
Subject: Re: getNodeId() returning null in tree2
> [snip]
>
> > The processing of the jsp page must iterate over the tags a number of
times and in the
> > early iterations the components are not yet fully initialized.
>
> I don't understand why I haven't seen this myself when I am working
> with tree2. I'd like to understand more about what is happening
> behind the scenes here. I hope to take a closer look tomorrow
> (Monday.) I saw your fix in JIRA. It looks good. I'm going to hold
> off adding it until I can understand why this is happening (otherwise
> I will get lazy and stop thinking about it.)
>
> > Rob
>
> sean
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
Yes I am running on Windows. I agree that it shouldn't make any
difference. Generally I do my testing through JBuilder's integrated
Tomcat. Its possible that I don't have log4j configured correctly (or
at all.) I will check tomorrow to verify.
sean
On Apr 3, 2005 10:51 PM, Rob Decker <ro...@objectsource.org> wrote:
> Are you running on Windows? I haven't seen this when running on Windows.
> I've only seen it when running on Linux. Not that I can think of why that
> should make a difference, but it's what I've observered.
>
>
> ----- Original Message -----
> From: "Sean Schofield" <se...@gmail.com>
> To: "MyFaces Discussion" <my...@incubator.apache.org>
> Sent: Sunday, April 03, 2005 10:27 PM
> Subject: Re: getNodeId() returning null in tree2
>
> > [snip]
> >
> > > The processing of the jsp page must iterate over the tags a number of
> times and in the
> > > early iterations the components are not yet fully initialized.
> >
> > I don't understand why I haven't seen this myself when I am working
> > with tree2. I'd like to understand more about what is happening
> > behind the scenes here. I hope to take a closer look tomorrow
> > (Monday.) I saw your fix in JIRA. It looks good. I'm going to hold
> > off adding it until I can understand why this is happening (otherwise
> > I will get lazy and stop thinking about it.)
> >
> > > Rob
> >
> > sean
>
>
Re: getNodeId() returning null in tree2
Posted by Rob Decker <ro...@objectsource.org>.
Are you running on Windows? I haven't seen this when running on Windows.
I've only seen it when running on Linux. Not that I can think of why that
should make a difference, but it's what I've observered.
----- Original Message -----
From: "Sean Schofield" <se...@gmail.com>
To: "MyFaces Discussion" <my...@incubator.apache.org>
Sent: Sunday, April 03, 2005 10:27 PM
Subject: Re: getNodeId() returning null in tree2
> [snip]
>
> > The processing of the jsp page must iterate over the tags a number of
times and in the
> > early iterations the components are not yet fully initialized.
>
> I don't understand why I haven't seen this myself when I am working
> with tree2. I'd like to understand more about what is happening
> behind the scenes here. I hope to take a closer look tomorrow
> (Monday.) I saw your fix in JIRA. It looks good. I'm going to hold
> off adding it until I can understand why this is happening (otherwise
> I will get lazy and stop thinking about it.)
>
> > Rob
>
> sean
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
[snip]
> The processing of the jsp page must iterate over the tags a number of times and in the
> early iterations the components are not yet fully initialized.
I don't understand why I haven't seen this myself when I am working
with tree2. I'd like to understand more about what is happening
behind the scenes here. I hope to take a closer look tomorrow
(Monday.) I saw your fix in JIRA. It looks good. I'm going to hold
off adding it until I can understand why this is happening (otherwise
I will get lazy and stop thinking about it.)
> Rob
sean
Re: getNodeId() returning null in tree2
Posted by Rob Decker <ro...@objectsource.org>.
I don't think it has to do with any mutation in the tree. I think that the
isNodeSelected method is simply being called before the nodeId has been set
on the object. It gets called again later when the nodeId is set. I tested
the fix I put in the bug report and it had no side effects. The processing
of the jsp page must iterate over the tags a number of times and in the
early iterations the components are not yet fully initialized.
Rob
----- Original Message -----
From: "Sean Schofield" <se...@gmail.com>
To: "MyFaces Discussion" <my...@incubator.apache.org>
Sent: Saturday, April 02, 2005 1:00 PM
Subject: Re: getNodeId() returning null in tree2
> Are we sure that is it? This would imply that the structure of his
> tree is changing between posts. That was the problem in MYFACES-160
> but you had a pretty unusual case where you simulating the tree
> changing between *every* post.
>
> Jon, does this sound like it applies to you? Is your data changing
> between posts?
>
> sean
>
>
> On Apr 1, 2005 10:09 PM, Rob Decker <ro...@objectsource.org> wrote:
> > This is the bug I reported about isNodeSelected() throwing a
> > NullPointerException because getNodeId() returns a null nodeId.
> > http://issues.apache.org/jira/browse/MYFACES-160
> >
> > I put the fix in the bug report. It's null because it hasn't been set
yet.
> >
> >
> > ----- Original Message -----
> > From: "Sean Schofield" <se...@gmail.com>
> > To: "MyFaces Discussion" <my...@incubator.apache.org>
> > Sent: Friday, April 01, 2005 9:30 PM
> > Subject: Re: getNodeId() returning null in tree2
> >
> > > I still need some time to think about what the problem might be. I
> > > have a lot of personal stuff going on that's keeping me busy at the
> > > moment. Plus I am working on some stuff related to the new website,
> > > etc.
> > >
> > > I will get back to you shortly though.
> > >
> > > sean
> > >
> > >
> > > On Mar 31, 2005 4:30 PM, Jon Travis <jt...@p00p.org> wrote:
> > > > Ack!
> > > >
> > > > Replace 'false' with null (hence the NPE).
> > > >
> > > > The NPE occurs in HtmlTree.isNodeSelected() -- it
> > > > does:
> > > >
> > > > return getNodeId().equals(_selectedNodeId)
> > > >
> > > > getNodeId() returns false. Up the stack, this
> > > > is being called from DebugUtils.printComponent.
> > > >
> > > > -- Jon
> > > >
> > > >
> > > > On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
> > > >
> > > > > Jon,
> > > > >
> > > > > When you say getNodeId returns false, do you mean the string value
> > > > > "false"? That method returns a String so I'm a bit confused. How
do
> > > > > you know the id is "false"? Are you doing a debug statement?
> > > > >
> > > > > Please clarify so I can try and help you. Also, what is the exact
> > > > > line where the NPE occurs? Is it the return statement in
> > > > > isNodeExpanded? If so (and if you have a debugger) it would be
> > > > > helpful to know which value is null.
> > > > >
> > > > > Regards,
> > > > > sean
> > > > >
> > > > > ps. I forwarded this to the myfaces list in case anyone else has
the
> > > > > same problem. These messages are also archived so if someone has
the
> > > > > same question in the future they can get information by doing a
quick
> > > > > search.
> > > > >
> > > > >
> > > > > On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> > > > > <se...@gmail.com> wrote:
> > > > >> ---------- Forwarded message ----------
> > > > >> From: Jon Travis <jt...@p00p.org>
> > > > >> Date: Wed, 30 Mar 2005 17:32:19 -0800
> > > > >> Subject: getNodeId() returning null in tree2
> > > > >> To: Sean Schofield <se...@gmail.com>
> > > > >>
> > > > >> Hey Sean,
> > > > >>
> > > > >> Hope this isn't a braindead question, but:
> > > > >>
> > > > >> I'm getting a NPE in the tree2 code when there is
> > > > >> no node that is selected & I am expanding/collapsing.
> > > > >>
> > > > >> Basically it comes about when HtmlTree.isNodeSelected
> > > > >> is run -- getNodeId() returns false, then kaboom.
> > > > >>
> > > > >> Thoughts?
> > > > >>
> > > > >> -- Jon
> > > > >>
> > > > >
> > > > >
> > > >
> > > >
> >
> >
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
Are we sure that is it? This would imply that the structure of his
tree is changing between posts. That was the problem in MYFACES-160
but you had a pretty unusual case where you simulating the tree
changing between *every* post.
Jon, does this sound like it applies to you? Is your data changing
between posts?
sean
On Apr 1, 2005 10:09 PM, Rob Decker <ro...@objectsource.org> wrote:
> This is the bug I reported about isNodeSelected() throwing a
> NullPointerException because getNodeId() returns a null nodeId.
> http://issues.apache.org/jira/browse/MYFACES-160
>
> I put the fix in the bug report. It's null because it hasn't been set yet.
>
>
> ----- Original Message -----
> From: "Sean Schofield" <se...@gmail.com>
> To: "MyFaces Discussion" <my...@incubator.apache.org>
> Sent: Friday, April 01, 2005 9:30 PM
> Subject: Re: getNodeId() returning null in tree2
>
> > I still need some time to think about what the problem might be. I
> > have a lot of personal stuff going on that's keeping me busy at the
> > moment. Plus I am working on some stuff related to the new website,
> > etc.
> >
> > I will get back to you shortly though.
> >
> > sean
> >
> >
> > On Mar 31, 2005 4:30 PM, Jon Travis <jt...@p00p.org> wrote:
> > > Ack!
> > >
> > > Replace 'false' with null (hence the NPE).
> > >
> > > The NPE occurs in HtmlTree.isNodeSelected() -- it
> > > does:
> > >
> > > return getNodeId().equals(_selectedNodeId)
> > >
> > > getNodeId() returns false. Up the stack, this
> > > is being called from DebugUtils.printComponent.
> > >
> > > -- Jon
> > >
> > >
> > > On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
> > >
> > > > Jon,
> > > >
> > > > When you say getNodeId returns false, do you mean the string value
> > > > "false"? That method returns a String so I'm a bit confused. How do
> > > > you know the id is "false"? Are you doing a debug statement?
> > > >
> > > > Please clarify so I can try and help you. Also, what is the exact
> > > > line where the NPE occurs? Is it the return statement in
> > > > isNodeExpanded? If so (and if you have a debugger) it would be
> > > > helpful to know which value is null.
> > > >
> > > > Regards,
> > > > sean
> > > >
> > > > ps. I forwarded this to the myfaces list in case anyone else has the
> > > > same problem. These messages are also archived so if someone has the
> > > > same question in the future they can get information by doing a quick
> > > > search.
> > > >
> > > >
> > > > On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> > > > <se...@gmail.com> wrote:
> > > >> ---------- Forwarded message ----------
> > > >> From: Jon Travis <jt...@p00p.org>
> > > >> Date: Wed, 30 Mar 2005 17:32:19 -0800
> > > >> Subject: getNodeId() returning null in tree2
> > > >> To: Sean Schofield <se...@gmail.com>
> > > >>
> > > >> Hey Sean,
> > > >>
> > > >> Hope this isn't a braindead question, but:
> > > >>
> > > >> I'm getting a NPE in the tree2 code when there is
> > > >> no node that is selected & I am expanding/collapsing.
> > > >>
> > > >> Basically it comes about when HtmlTree.isNodeSelected
> > > >> is run -- getNodeId() returns false, then kaboom.
> > > >>
> > > >> Thoughts?
> > > >>
> > > >> -- Jon
> > > >>
> > > >
> > > >
> > >
> > >
>
>
Re: getNodeId() returning null in tree2
Posted by Rob Decker <ro...@objectsource.org>.
This is the bug I reported about isNodeSelected() throwing a
NullPointerException because getNodeId() returns a null nodeId.
http://issues.apache.org/jira/browse/MYFACES-160
I put the fix in the bug report. It's null because it hasn't been set yet.
----- Original Message -----
From: "Sean Schofield" <se...@gmail.com>
To: "MyFaces Discussion" <my...@incubator.apache.org>
Sent: Friday, April 01, 2005 9:30 PM
Subject: Re: getNodeId() returning null in tree2
> I still need some time to think about what the problem might be. I
> have a lot of personal stuff going on that's keeping me busy at the
> moment. Plus I am working on some stuff related to the new website,
> etc.
>
> I will get back to you shortly though.
>
> sean
>
>
> On Mar 31, 2005 4:30 PM, Jon Travis <jt...@p00p.org> wrote:
> > Ack!
> >
> > Replace 'false' with null (hence the NPE).
> >
> > The NPE occurs in HtmlTree.isNodeSelected() -- it
> > does:
> >
> > return getNodeId().equals(_selectedNodeId)
> >
> > getNodeId() returns false. Up the stack, this
> > is being called from DebugUtils.printComponent.
> >
> > -- Jon
> >
> >
> > On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
> >
> > > Jon,
> > >
> > > When you say getNodeId returns false, do you mean the string value
> > > "false"? That method returns a String so I'm a bit confused. How do
> > > you know the id is "false"? Are you doing a debug statement?
> > >
> > > Please clarify so I can try and help you. Also, what is the exact
> > > line where the NPE occurs? Is it the return statement in
> > > isNodeExpanded? If so (and if you have a debugger) it would be
> > > helpful to know which value is null.
> > >
> > > Regards,
> > > sean
> > >
> > > ps. I forwarded this to the myfaces list in case anyone else has the
> > > same problem. These messages are also archived so if someone has the
> > > same question in the future they can get information by doing a quick
> > > search.
> > >
> > >
> > > On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> > > <se...@gmail.com> wrote:
> > >> ---------- Forwarded message ----------
> > >> From: Jon Travis <jt...@p00p.org>
> > >> Date: Wed, 30 Mar 2005 17:32:19 -0800
> > >> Subject: getNodeId() returning null in tree2
> > >> To: Sean Schofield <se...@gmail.com>
> > >>
> > >> Hey Sean,
> > >>
> > >> Hope this isn't a braindead question, but:
> > >>
> > >> I'm getting a NPE in the tree2 code when there is
> > >> no node that is selected & I am expanding/collapsing.
> > >>
> > >> Basically it comes about when HtmlTree.isNodeSelected
> > >> is run -- getNodeId() returns false, then kaboom.
> > >>
> > >> Thoughts?
> > >>
> > >> -- Jon
> > >>
> > >
> > >
> >
> >
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
I still need some time to think about what the problem might be. I
have a lot of personal stuff going on that's keeping me busy at the
moment. Plus I am working on some stuff related to the new website,
etc.
I will get back to you shortly though.
sean
On Mar 31, 2005 4:30 PM, Jon Travis <jt...@p00p.org> wrote:
> Ack!
>
> Replace 'false' with null (hence the NPE).
>
> The NPE occurs in HtmlTree.isNodeSelected() -- it
> does:
>
> return getNodeId().equals(_selectedNodeId)
>
> getNodeId() returns false. Up the stack, this
> is being called from DebugUtils.printComponent.
>
> -- Jon
>
>
> On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
>
> > Jon,
> >
> > When you say getNodeId returns false, do you mean the string value
> > "false"? That method returns a String so I'm a bit confused. How do
> > you know the id is "false"? Are you doing a debug statement?
> >
> > Please clarify so I can try and help you. Also, what is the exact
> > line where the NPE occurs? Is it the return statement in
> > isNodeExpanded? If so (and if you have a debugger) it would be
> > helpful to know which value is null.
> >
> > Regards,
> > sean
> >
> > ps. I forwarded this to the myfaces list in case anyone else has the
> > same problem. These messages are also archived so if someone has the
> > same question in the future they can get information by doing a quick
> > search.
> >
> >
> > On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> > <se...@gmail.com> wrote:
> >> ---------- Forwarded message ----------
> >> From: Jon Travis <jt...@p00p.org>
> >> Date: Wed, 30 Mar 2005 17:32:19 -0800
> >> Subject: getNodeId() returning null in tree2
> >> To: Sean Schofield <se...@gmail.com>
> >>
> >> Hey Sean,
> >>
> >> Hope this isn't a braindead question, but:
> >>
> >> I'm getting a NPE in the tree2 code when there is
> >> no node that is selected & I am expanding/collapsing.
> >>
> >> Basically it comes about when HtmlTree.isNodeSelected
> >> is run -- getNodeId() returns false, then kaboom.
> >>
> >> Thoughts?
> >>
> >> -- Jon
> >>
> >
> >
>
>
Re: getNodeId() returning null in tree2
Posted by Jon Travis <jt...@p00p.org>.
Ack!
Replace 'false' with null (hence the NPE).
The NPE occurs in HtmlTree.isNodeSelected() -- it
does:
return getNodeId().equals(_selectedNodeId)
getNodeId() returns false. Up the stack, this
is being called from DebugUtils.printComponent.
-- Jon
On Mar 31, 2005, at 6:04 AM, Sean Schofield wrote:
> Jon,
>
> When you say getNodeId returns false, do you mean the string value
> "false"? That method returns a String so I'm a bit confused. How do
> you know the id is "false"? Are you doing a debug statement?
>
> Please clarify so I can try and help you. Also, what is the exact
> line where the NPE occurs? Is it the return statement in
> isNodeExpanded? If so (and if you have a debugger) it would be
> helpful to know which value is null.
>
> Regards,
> sean
>
> ps. I forwarded this to the myfaces list in case anyone else has the
> same problem. These messages are also archived so if someone has the
> same question in the future they can get information by doing a quick
> search.
>
>
> On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
> <se...@gmail.com> wrote:
>> ---------- Forwarded message ----------
>> From: Jon Travis <jt...@p00p.org>
>> Date: Wed, 30 Mar 2005 17:32:19 -0800
>> Subject: getNodeId() returning null in tree2
>> To: Sean Schofield <se...@gmail.com>
>>
>> Hey Sean,
>>
>> Hope this isn't a braindead question, but:
>>
>> I'm getting a NPE in the tree2 code when there is
>> no node that is selected & I am expanding/collapsing.
>>
>> Basically it comes about when HtmlTree.isNodeSelected
>> is run -- getNodeId() returns false, then kaboom.
>>
>> Thoughts?
>>
>> -- Jon
>>
>
>
Re: getNodeId() returning null in tree2
Posted by Sean Schofield <se...@gmail.com>.
Jon,
When you say getNodeId returns false, do you mean the string value
"false"? That method returns a String so I'm a bit confused. How do
you know the id is "false"? Are you doing a debug statement?
Please clarify so I can try and help you. Also, what is the exact
line where the NPE occurs? Is it the return statement in
isNodeExpanded? If so (and if you have a debugger) it would be
helpful to know which value is null.
Regards,
sean
ps. I forwarded this to the myfaces list in case anyone else has the
same problem. These messages are also archived so if someone has the
same question in the future they can get information by doing a quick
search.
On Thu, 31 Mar 2005 08:55:00 -0500, Sean Schofield
<se...@gmail.com> wrote:
> ---------- Forwarded message ----------
> From: Jon Travis <jt...@p00p.org>
> Date: Wed, 30 Mar 2005 17:32:19 -0800
> Subject: getNodeId() returning null in tree2
> To: Sean Schofield <se...@gmail.com>
>
> Hey Sean,
>
> Hope this isn't a braindead question, but:
>
> I'm getting a NPE in the tree2 code when there is
> no node that is selected & I am expanding/collapsing.
>
> Basically it comes about when HtmlTree.isNodeSelected
> is run -- getNodeId() returns false, then kaboom.
>
> Thoughts?
>
> -- Jon
>