Re: [JPP-Devel] how to refresh a layer in run time
Hi Stefan,
Your code really helps.
I can refresh a layer now.
What I did is to do all recurrent task in the run(TaskMonitor monitor,
PlugInContext context) function. Create a layer, and retrieve dataset from
database by creating a recordset _RS, then loop it using the following code
while (_RS.next()){
if(monitor.isCancelRequested()){return;}
updatePostgisLayer(Changing, _RS); // this update a specify attribute to
control color.
monitor.report(count, 100, Evolution);
count++;
Thread.sleep(1000L); // delay a bit so that you can see the changes.
Changing.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED); //refresh
}
BTW, in your code, I see that you are using
movieLayer.setFeatureCollectionModified(true);
and
movieLayer.setFeatureCollectionModified(false);
In what circumstance, you need to use it.
Many Thanks,
Elton
--- On Wed, 7/14/10, Stefan Steiniger sst...@geo.uzh.ch wrote:
From: Stefan Steiniger sst...@geo.uzh.ch
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Wednesday, July 14, 2010, 5:50 PM
Hei Elton,
my experimental code is attached. But not sure if it helps
you.
on vi.. maybe you have to apply the style? or the trick is
done by firing the layer-changed event? haven't tested.
stefan
Elton Chan wrote:
Hi Stefan,
Could you send me your code for my testing as I would
like to see how do you update the layerpanel according to
order and then update the layerpanel.
BTW, following are conditions for my case.
i. all features to be displayed are stored in one
polygon layer;
ii. all features will be displayed at any time step;
iii. For each time step, an attribute that controls
feature's color would be updated from an event table. The
event table stores order, polygon id and color code.
iv. After color is updated for all features, it will
be shown on the layerpanel.
However, the problem I encountered is at step iv. that
althrough the attribute can be updated without problem, it
cannot be shown/refresh on the layerpanel.
For your case, I wonder if you could create a sql
query to retrieve particular feature and display at a time.
(assume you are using postgis)
Thanks,
Elton
--- On Tue, 7/13/10, Stefan Steiniger sst...@geo.uzh.ch
wrote:
From: Stefan Steiniger sst...@geo.uzh.ch
Subject: Re: [JPP-Devel] how to refresh a layer in
run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Tuesday, July 13, 2010, 12:15 AM
mhm.. not really a solution.
I assume that
- all features to be displayed are stored in one
layer
- only one(!) feature needs to be displayed at a
time step
- one attribute of the layer has the information
about the
the order the features are to be displayed.
Then I just display the features after each other
by
modifying the FeatureCollection of the Layer.
Of course I can send the code if someone wants to
see/use
it.
So, quite a bit of assumptions which works for my
special
case - seing how a bear home range evolves over
time with the number of
new GPS points collected (a home range is a
polygon or a multi
polygon and I have almost as much polygons as GPS
point).
stefan
Larry Becker schrieb:
Hi Elton,
Make your loop variable a class
variable. Have the loop control and
attribute update inside the event
handler. While
the loop is still
going invoke the event handler again, also
from within
the event
handler. Once you have set up the event
handler
and invoked it once,
just fall off the end of the execute
routine. I
would give an example,
but I'm away from my development system.
It sounds like Stefan also has a
need
for animation. Perhaps he will
show you his solution.
Larry
On Fri, Jul 9, 2010 at 10:41 PM, Elton Chan
elton.c...@yahoo.com
mailto:elton.c...@yahoo.com
wrote:
Dear Larry,
Could you tell me how it
works? It seems a loop is required for
continous update an
attribute.
How can it be replaced by a event
handler?
Thanks,
Elton
--- On *Fri, 7/2/10,
Larry
Becker /becker.la...@gmail.com
mailto:becker.la...@gmail.com/*
wrote:
From: Larry
Becker becker.la...@gmail.com
mailto:becker.la...@gmail.com
Subject:
Re:
[JPP-Devel] how to refresh a layer in run time
To:
OpenJump
develop and use
jump-pilot-devel@lists.sourceforge.net
mailto:jump-pilot-devel@lists.sourceforge.net
Date:
Friday,
July 2, 2010, 5:33 PM
Hi Elton,
I
think
you are going to have to restructure you code from
a
loop to be
an
event handler that triggers itself until the end
of some
counter. That is the only sure way to play
nice with
the GUI.
Larry
Re: [JPP-Devel] how to refresh a layer in run time
Hei Elton, great that my code helped you. on your question: BTW, in your code, I see that you are using movieLayer.setFeatureCollectionModified(true); and movieLayer.setFeatureCollectionModified(false); In what circumstance, you need to use it. well, I am not really sure - switch it off (false) and on (true) - to avoid that events are fired until all changes are done. Because I think as soon as I change a Layer/FeatureCollection it will fire an event and redrawing processes start (actually usually EditTransactions would be used to modify a layer, for instance when drawing tools are used). However, I may be wrong here - mixed up my memories. Maybe I should study other plugins... but well.. currently my time is limited for proper/fool-proof development stefan -- This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first ___ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
Re: [JPP-Devel] how to refresh a layer in run time
Hei Elton,
my experimental code is attached. But not sure if it helps you.
on vi.. maybe you have to apply the style? or the trick is done by
firing the layer-changed event? haven't tested.
stefan
Elton Chan wrote:
Hi Stefan,
Could you send me your code for my testing as I would like to see how do you
update the layerpanel according to order and then update the layerpanel.
BTW, following are conditions for my case.
i. all features to be displayed are stored in one polygon layer;
ii. all features will be displayed at any time step;
iii. For each time step, an attribute that controls feature's color would be
updated from an event table. The event table stores order, polygon id and color
code.
iv. After color is updated for all features, it will be shown on the layerpanel.
However, the problem I encountered is at step iv. that althrough the attribute
can be updated without problem, it cannot be shown/refresh on the layerpanel.
For your case, I wonder if you could create a sql query to retrieve particular
feature and display at a time. (assume you are using postgis)
Thanks,
Elton
--- On Tue, 7/13/10, Stefan Steiniger sst...@geo.uzh.ch wrote:
From: Stefan Steiniger sst...@geo.uzh.ch
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Tuesday, July 13, 2010, 12:15 AM
mhm.. not really a solution.
I assume that
- all features to be displayed are stored in one layer
- only one(!) feature needs to be displayed at a time step
- one attribute of the layer has the information about the
the order the
features are to be displayed.
Then I just display the features after each other by
modifying the
FeatureCollection of the Layer.
Of course I can send the code if someone wants to see/use
it.
So, quite a bit of assumptions which works for my special
case - seing
how a bear home range evolves over time with the number of
new GPS
points collected (a home range is a polygon or a multi
polygon and I
have almost as much polygons as GPS point).
stefan
Larry Becker schrieb:
Hi Elton,
Make your loop variable a class
variable. Have the loop control and
attribute update inside the event handler. While
the loop is still
going invoke the event handler again, also from within
the event
handler. Once you have set up the event handler
and invoked it once,
just fall off the end of the execute routine. I
would give an example,
but I'm away from my development system.
It sounds like Stefan also has a need
for animation. Perhaps he will
show you his solution.
Larry
On Fri, Jul 9, 2010 at 10:41 PM, Elton Chan elton.c...@yahoo.com
mailto:elton.c...@yahoo.com
wrote:
Dear Larry,
Could you tell me how it
works? It seems a loop is required for
continous update an attribute.
How can it be replaced by a event
handler?
Thanks,
Elton
--- On *Fri, 7/2/10, Larry
Becker /becker.la...@gmail.com
mailto:becker.la...@gmail.com/*
wrote:
From: Larry
Becker becker.la...@gmail.com
mailto:becker.la...@gmail.com
Subject: Re:
[JPP-Devel] how to refresh a layer in run time
To: OpenJump
develop and use
jump-pilot-devel@lists.sourceforge.net
mailto:jump-pilot-devel@lists.sourceforge.net
Date: Friday,
July 2, 2010, 5:33 PM
Hi Elton,
I think
you are going to have to restructure you code from a
loop to be an
event handler that triggers itself until the end
of some
counter. That is the only sure way to play nice with
the GUI.
Larry
On Fri, Jul 2,
2010 at 12:06 PM, Elton Chan
elton.c...@yahoo.com
http://mc/compose?to=elton.c...@yahoo.com
wrote:
Hi
Larry,
I've tried the LayerView Panel().repaint()
with
InvokeAndWait(). However, the layerpanel
still cannot refesh
and the for loop continues until all
finishing all the
Recordset.
The following code is added after
attribute update:
if
(SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!);
Always
hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable(
) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On *Thu, 7/1/10, Larry Becker /becker.la...@gmail.com
http://mc/compose?to=becker.la...@gmail.com/*
wrote:
From: Larry Becker
Re: [JPP-Devel] how to refresh a layer in run time
mhm.. not really a solution.
I assume that
- all features to be displayed are stored in one layer
- only one(!) feature needs to be displayed at a time step
- one attribute of the layer has the information about the the order the
features are to be displayed.
Then I just display the features after each other by modifying the
FeatureCollection of the Layer.
Of course I can send the code if someone wants to see/use it.
So, quite a bit of assumptions which works for my special case - seing
how a bear home range evolves over time with the number of new GPS
points collected (a home range is a polygon or a multi polygon and I
have almost as much polygons as GPS point).
stefan
Larry Becker schrieb:
Hi Elton,
Make your loop variable a class variable. Have the loop control and
attribute update inside the event handler. While the loop is still
going invoke the event handler again, also from within the event
handler. Once you have set up the event handler and invoked it once,
just fall off the end of the execute routine. I would give an example,
but I'm away from my development system.
It sounds like Stefan also has a need for animation. Perhaps he will
show you his solution.
Larry
On Fri, Jul 9, 2010 at 10:41 PM, Elton Chan elton.c...@yahoo.com
mailto:elton.c...@yahoo.com wrote:
Dear Larry,
Could you tell me how it works? It seems a loop is required for
continous update an attribute. How can it be replaced by a event
handler?
Thanks,
Elton
--- On *Fri, 7/2/10, Larry Becker /becker.la...@gmail.com
mailto:becker.la...@gmail.com/* wrote:
From: Larry Becker becker.la...@gmail.com
mailto:becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use
jump-pilot-devel@lists.sourceforge.net
mailto:jump-pilot-devel@lists.sourceforge.net
Date: Friday, July 2, 2010, 5:33 PM
Hi Elton,
I think you are going to have to restructure you code from a
loop to be an event handler that triggers itself until the end
of some counter. That is the only sure way to play nice with
the GUI.
Larry
On Fri, Jul 2, 2010 at 12:06 PM, Elton Chan
elton.c...@yahoo.com
http://mc/compose?to=elton.c...@yahoo.com wrote:
Hi Larry,
I've tried the LayerView Panel().repaint() with
InvokeAndWait(). However, the layerpanel still cannot refesh
and the for loop continues until all finishing all the
Recordset.
The following code is added after attribute update:
if (SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!); Always
hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable( ) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On *Thu, 7/1/10, Larry Becker /becker.la...@gmail.com
http://mc/compose?to=becker.la...@gmail.com/* wrote:
From: Larry Becker becker.la...@gmail.com
http://mc/compose?to=becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use
jump-pilot-devel@lists.sourceforge.net
http://mc/compose?to=jump-pilot-de...@lists.sourceforge.net
Date: Thursday, July 1, 2010, 2:30 PM
Sorry, Elton, not NIls. I answered so many questions
that I got confused about who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker
becker.la...@gmail.com
http://mc/compose?to=becker.la...@gmail.com wrote:
Hi Nils,
I believe you might be running into problems
updating because your loop is blocking the GUI
thread. You might try a LayerViewPanel.repaint()
using invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan
elton.c...@yahoo.com
http://mc/compose?to=elton.c...@yahoo.com wrote:
Hi there,
I would like to refresh a layer after changing
attribute of each feature in the layer based on
Re: [JPP-Devel] how to refresh a layer in run time
Hi Stefan,
Could you send me your code for my testing as I would like to see how do you
update the layerpanel according to order and then update the layerpanel.
BTW, following are conditions for my case.
i. all features to be displayed are stored in one polygon layer;
ii. all features will be displayed at any time step;
iii. For each time step, an attribute that controls feature's color would be
updated from an event table. The event table stores order, polygon id and color
code.
iv. After color is updated for all features, it will be shown on the layerpanel.
However, the problem I encountered is at step iv. that althrough the attribute
can be updated without problem, it cannot be shown/refresh on the layerpanel.
For your case, I wonder if you could create a sql query to retrieve particular
feature and display at a time. (assume you are using postgis)
Thanks,
Elton
--- On Tue, 7/13/10, Stefan Steiniger sst...@geo.uzh.ch wrote:
From: Stefan Steiniger sst...@geo.uzh.ch
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Tuesday, July 13, 2010, 12:15 AM
mhm.. not really a solution.
I assume that
- all features to be displayed are stored in one layer
- only one(!) feature needs to be displayed at a time step
- one attribute of the layer has the information about the
the order the
features are to be displayed.
Then I just display the features after each other by
modifying the
FeatureCollection of the Layer.
Of course I can send the code if someone wants to see/use
it.
So, quite a bit of assumptions which works for my special
case - seing
how a bear home range evolves over time with the number of
new GPS
points collected (a home range is a polygon or a multi
polygon and I
have almost as much polygons as GPS point).
stefan
Larry Becker schrieb:
Hi Elton,
Make your loop variable a class
variable. Have the loop control and
attribute update inside the event handler. While
the loop is still
going invoke the event handler again, also from within
the event
handler. Once you have set up the event handler
and invoked it once,
just fall off the end of the execute routine. I
would give an example,
but I'm away from my development system.
It sounds like Stefan also has a need
for animation. Perhaps he will
show you his solution.
Larry
On Fri, Jul 9, 2010 at 10:41 PM, Elton Chan elton.c...@yahoo.com
mailto:elton.c...@yahoo.com
wrote:
Dear Larry,
Could you tell me how it
works? It seems a loop is required for
continous update an attribute.
How can it be replaced by a event
handler?
Thanks,
Elton
--- On *Fri, 7/2/10, Larry
Becker /becker.la...@gmail.com
mailto:becker.la...@gmail.com/*
wrote:
From: Larry
Becker becker.la...@gmail.com
mailto:becker.la...@gmail.com
Subject: Re:
[JPP-Devel] how to refresh a layer in run time
To: OpenJump
develop and use
jump-pilot-devel@lists.sourceforge.net
mailto:jump-pilot-devel@lists.sourceforge.net
Date: Friday,
July 2, 2010, 5:33 PM
Hi Elton,
I think
you are going to have to restructure you code from a
loop to be an
event handler that triggers itself until the end
of some
counter. That is the only sure way to play nice with
the GUI.
Larry
On Fri, Jul 2,
2010 at 12:06 PM, Elton Chan
elton.c...@yahoo.com
http://mc/compose?to=elton.c...@yahoo.com
wrote:
Hi
Larry,
I've tried the LayerView Panel().repaint()
with
InvokeAndWait(). However, the layerpanel
still cannot refesh
and the for loop continues until all
finishing all the
Recordset.
The following code is added after
attribute update:
if
(SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!);
Always
hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable(
) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On *Thu, 7/1/10, Larry Becker /becker.la...@gmail.com
http://mc/compose?to=becker.la...@gmail.com/*
wrote:
From: Larry Becker becker.la...@gmail.com
Re: [JPP-Devel] how to refresh a layer in run time
Dear Larry,
Could you tell me how it works? It seems a loop is required for continous
update an attribute. How can it be replaced by a event handler?
Thanks,
Elton
--- On Fri, 7/2/10, Larry Becker becker.la...@gmail.com wrote:
From: Larry Becker becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Friday, July 2, 2010, 5:33 PM
Hi Elton,
I think you are going to have to restructure you code from a loop to be an
event handler that triggers itself until the end of some counter. That is the
only sure way to play nice with the GUI.
Larry
On Fri, Jul 2, 2010 at 12:06 PM, Elton Chan elton.c...@yahoo.com wrote:
Hi Larry,
I've tried the LayerView Panel().repaint() with InvokeAndWait(). However, the
layerpanel still cannot refesh and the for loop continues until all finishing
all the Recordset.
The following code is added after attribute update:
if (SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!); Always hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable( ) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On Thu, 7/1/10, Larry Becker becker.la...@gmail.com wrote:
From: Larry Becker
becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Thursday, July 1, 2010, 2:30 PM
Sorry, Elton, not NIls. I answered so many questions that I got confused about
who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker becker.la...@gmail.com wrote:
Hi Nils,
I believe you might be running into problems updating because your loop is
blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan elton.c...@yahoo.com wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature in the
layer based on an event table. The event table records attribute assigned to
each feature at specified stage. Following is the schema of the event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved and
updated to corresponding feature. Finally, update value would be visualized by
unique colortheming. However, it seems the layer refreshing can only be
effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated for
each each row of the RecordSet, i.e. immediately after the updatePostgisLayer
function.
If I change the query to retrieve specify row (i.e. single row only), layer can
be refreshed. But it requires to activate it manually for each update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but it
didn't work.
Anyone can help?
thanks,
Elton
--
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Re: [JPP-Devel] how to refresh a layer in run time
Hi Elton,
Make your loop variable a class variable. Have the loop control and
attribute update inside the event handler. While the loop is still going
invoke the event handler again, also from within the event handler. Once
you have set up the event handler and invoked it once, just fall off the end
of the execute routine. I would give an example, but I'm away from my
development system.
It sounds like Stefan also has a need for animation. Perhaps he will show
you his solution.
Larry
On Fri, Jul 9, 2010 at 10:41 PM, Elton Chan elton.c...@yahoo.com wrote:
Dear Larry,
Could you tell me how it works? It seems a loop is required for continous
update an attribute. How can it be replaced by a event handler?
Thanks,
Elton
--- On *Fri, 7/2/10, Larry Becker becker.la...@gmail.com* wrote:
From: Larry Becker becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Friday, July 2, 2010, 5:33 PM
Hi Elton,
I think you are going to have to restructure you code from a loop to be
an event handler that triggers itself until the end of some counter. That
is the only sure way to play nice with the GUI.
Larry
On Fri, Jul 2, 2010 at 12:06 PM, Elton Chan
elton.c...@yahoo.comhttp://mc/compose?to=elton.c...@yahoo.com
wrote:
Hi Larry,
I've tried the LayerView Panel().repaint() with InvokeAndWait(). However,
the layerpanel still cannot refesh and the for loop continues until all
finishing all the Recordset.
The following code is added after attribute update:
if (SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!); Always hit this
line.
}
else {
SwingUtilities.invokeAndWait(new Runnable( ) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On *Thu, 7/1/10, Larry Becker
becker.la...@gmail.comhttp://mc/compose?to=becker.la...@gmail.com
* wrote:
From: Larry Becker
becker.la...@gmail.comhttp://mc/compose?to=becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use
jump-pilot-devel@lists.sourceforge.nethttp://mc/compose?to=jump-pilot-de...@lists.sourceforge.net
Date: Thursday, July 1, 2010, 2:30 PM
Sorry, Elton, not NIls. I answered so many questions that I got confused
about who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker
becker.la...@gmail.comhttp://mc/compose?to=becker.la...@gmail.com
wrote:
Hi Nils,
I believe you might be running into problems updating because your loop
is blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan
elton.c...@yahoo.comhttp://mc/compose?to=elton.c...@yahoo.com
wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature
in the layer based on an event table. The event table records attribute
assigned to each feature at specified stage. Following is the schema of the
event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be
retrieved and updated to corresponding feature. Finally, update value
would
be visualized by unique colortheming. However, it seems the layer
refreshing
can only be effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are
updated for each each row of the RecordSet, i.e. immediately after the
updatePostgisLayer function.
If I change the query to retrieve specify row (i.e. single row only),
layer can be refreshed. But it requires to activate it manually for each
update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but
it didn't work.
Anyone can help?
thanks,
Elton
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Re: [JPP-Devel] how to refresh a layer in run time
Hi Larry,
I've tried the LayerView Panel().repaint() with InvokeAndWait(). However, the
layerpanel still cannot refesh and the for loop continues until all finishing
all the Recordset.
The following code is added after attribute update:
if (SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!); Always hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable( ) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On Thu, 7/1/10, Larry Becker becker.la...@gmail.com wrote:
From: Larry Becker becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Thursday, July 1, 2010, 2:30 PM
Sorry, Elton, not NIls. I answered so many questions that I got confused about
who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker becker.la...@gmail.com wrote:
Hi Nils,
I believe you might be running into problems updating because your loop is
blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan elton.c...@yahoo.com wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature in the
layer based on an event table. The event table records attribute assigned to
each feature at specified stage. Following is the schema of the event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved and
updated to corresponding feature. Finally, update value would be visualized by
unique colortheming. However, it seems the layer refreshing can only be
effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated for
each each row of the RecordSet, i.e. immediately after the updatePostgisLayer
function.
If I change the query to retrieve specify row (i.e. single row only), layer can
be refreshed. But it requires to activate it manually for each update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but it
didn't work.
Anyone can help?
thanks,
Elton
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Re: [JPP-Devel] how to refresh a layer in run time
Hi Elton,
I think you are going to have to restructure you code from a loop to be an
event handler that triggers itself until the end of some counter. That is
the only sure way to play nice with the GUI.
Larry
On Fri, Jul 2, 2010 at 12:06 PM, Elton Chan elton.c...@yahoo.com wrote:
Hi Larry,
I've tried the LayerView Panel().repaint() with InvokeAndWait(). However,
the layerpanel still cannot refesh and the for loop continues until all
finishing all the Recordset.
The following code is added after attribute update:
if (SwingUtilities.isEventDispatchThread()) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!); Always hit this line.
}
else {
SwingUtilities.invokeAndWait(new Runnable( ) {
public void run( ) {
context.getLayerViewPanel().repaint();
System.out.println(repaint!!!);
}
});
}
Any idea?
--- On *Thu, 7/1/10, Larry Becker becker.la...@gmail.com* wrote:
From: Larry Becker becker.la...@gmail.com
Subject: Re: [JPP-Devel] how to refresh a layer in run time
To: OpenJump develop and use jump-pilot-devel@lists.sourceforge.net
Date: Thursday, July 1, 2010, 2:30 PM
Sorry, Elton, not NIls. I answered so many questions that I got confused
about who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker
becker.la...@gmail.comhttp://mc/compose?to=becker.la...@gmail.com
wrote:
Hi Nils,
I believe you might be running into problems updating because your loop
is blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan
elton.c...@yahoo.comhttp://mc/compose?to=elton.c...@yahoo.com
wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature
in the layer based on an event table. The event table records attribute
assigned to each feature at specified stage. Following is the schema of the
event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved
and updated to corresponding feature. Finally, update value would be
visualized by unique colortheming. However, it seems the layer refreshing
can only be effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated
for each each row of the RecordSet, i.e. immediately after the
updatePostgisLayer function.
If I change the query to retrieve specify row (i.e. single row only),
layer can be refreshed. But it requires to activate it manually for each
update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but
it didn't work.
Anyone can help?
thanks,
Elton
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[JPP-Devel] how to refresh a layer in run time
Hi there,
I would like to refresh a layer after changing attribute of each feature in the
layer based on an event table. The event table records attribute assigned to
each feature at specified stage. Following is the schema of the event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved and
updated to corresponding feature. Finally, update value would be visualized by
unique colortheming. However, it seems the layer refreshing can only be
effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated for
each each row of the RecordSet, i.e. immediately after the updatePostgisLayer
function.
If I change the query to retrieve specify row (i.e. single row only), layer can
be refreshed. But it requires to activate it manually for each update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but it
didn't work.
Anyone can help?
thanks,
Elton
--
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Re: [JPP-Devel] how to refresh a layer in run time
Hi Nils,
I believe you might be running into problems updating because your loop is
blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan elton.c...@yahoo.com wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature in
the layer based on an event table. The event table records attribute
assigned to each feature at specified stage. Following is the schema of the
event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved
and updated to corresponding feature. Finally, update value would be
visualized by unique colortheming. However, it seems the layer refreshing
can only be effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated
for each each row of the RecordSet, i.e. immediately after the
updatePostgisLayer function.
If I change the query to retrieve specify row (i.e. single row only), layer
can be refreshed. But it requires to activate it manually for each update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but it
didn't work.
Anyone can help?
thanks,
Elton
--
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Re: [JPP-Devel] how to refresh a layer in run time
Sorry, Elton, not NIls. I answered so many questions that I got confused
about who I was answering. :-)
On Thu, Jul 1, 2010 at 8:24 AM, Larry Becker becker.la...@gmail.com wrote:
Hi Nils,
I believe you might be running into problems updating because your loop
is blocking the GUI thread. You might try a LayerViewPanel.repaint() using
invokeAndWait().
Larry
On Thu, Jul 1, 2010 at 6:42 AM, Elton Chan elton.c...@yahoo.com wrote:
Hi there,
I would like to refresh a layer after changing attribute of each feature
in the layer based on an event table. The event table records attribute
assigned to each feature at specified stage. Following is the schema of the
event table:
Event(
StageID int, // StageID defines sequence of the event
Feature01 int, // value to be assigned to feature 01
Feature02 int, // value to be assigned to feature 02
...
Feature10 int)
Based on the StageID sequence, values for each feature would be retrieved
and updated to corresponding feature. Finally, update value would be
visualized by unique colortheming. However, it seems the layer refreshing
can only be effective outside the ResultSet loop of the event table.
The following is the program codes:
Inside execute(PlugInContext context)
// get a layer
lyr = context.getLayerManager().getLayer(postgis);
//create a Resultset RS
ResultSet RS stat.executeQuery(select * from Event);
while (RS.next())
{
updatePostgisLayer(lyr, RS);//This function updates feature in the layer
}
layer refreshes after the looping all the resultset.
My question is how to refresh the layer once attribute values are updated
for each each row of the RecordSet, i.e. immediately after the
updatePostgisLayer function.
If I change the query to retrieve specify row (i.e. single row only),
layer can be refreshed. But it requires to activate it manually for each
update.
I tried to add lyr.fireLayerChanged(LayerEventType.APPEARANCE_CHANGED);
or lyr.fireAppearanceChanged() after the updatePostgisLayer function but
it didn't work.
Anyone can help?
thanks,
Elton
--
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