Hello, I have been working on a patch for the issues but have run into something that is a bit beyond me at the present:
The issue with restarting uDig and not having any wms-c layers re-rendered on the map with error: "Connection to Resource Failed..." seems to stem from the check in CatalogImpl when trying to resolve a handle (an IResolve) for the wms-c layer.
The upon checking each of the layers in a wms-c catalogue entry (in URLUtils.urlEquals ), fails. This is due to the stripRef which is always different when the wms-c catalogue entry is re-loaded.
Does anyone know how this "ID" is created or saved in the memo, and if it can be changed from this seemingly random ID to something useful? So far I have had little luck tracking it down. Seems it could be a default thing in the SAX parser.
For some clarity the Map.umap is attached: the layersID is "http://wmsc1.terrapages.net/getpngmap?REQUEST=GetCapabilities&SERVICE=WMS?tiled=true#464378263";
But upon reloading uDig the ID for the catalogue entry will be something completely different, so it always returns the "Connection to Resource Failed..." error on that layer.
My forward apologies if this makes little sense...but does anyone have any ideas where I could go looking to solve this? Or any pointers?
Cheers, John
-----Original Message-----
From: udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx [mailto:udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Graham Davis
Sent: Friday, January 09, 2009 3:10 AM
To: Jody Garnett
Cc: User-friendly Desktop Internet GIS
Subject: Re: [udig-devel] WMS-C Caching / MapInfo .TAB export
Hi Mr. Hudson,
We are not currently working on the WMS-C tile caching. It is possible
it has some bugs as it was developed as a first step and version. And
the tile preloading can definitely put a large strain on uDig and your
system since it is literally sending thousands of requests and writing
them to disk (in queued groups of course) but it doesn't surprise me
that it could crash. If you see areas for improvements please feel free
do to so.
Graham
Jody Garnett wrote:
Hi Mr Hudson:
Sounds like you have your first couple of bugs to report; Graham Davis
was the developer working on this stuff and he may or may not be aware
of the problem. While you wait to hear from him perhaps you can look
into where the problem occurs and make a patch?
Jody
On Thu, Jan 8, 2009 at 7:36 AM, John Hudson <John.Hudson@xxxxxxxxxxxx
<mailto:John.Hudson@xxxxxxxxxxxx>> wrote:
Hello everyone,
I'm starting a custom build that will require features from the
trunk, particularly WMS-C, the custom build involves mostly two
fronts:
1. Disk caching TileCache
2. Exporting the disk cache MapInfo .TAB files.
Is anyone currently working on WMS-C? Jody mentioned in an email
last month that we (LISAsoft) might have be getting some work on
this, I guess that's my queue to say "we get the work, YAY!"... so
looking at uDig, this is where I'm at:
After building uDig from the trunk, there is a few issues I would
like to fix:
testing with:
http://wmsc1.terrapages.net/getpngmap?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&tiled=true
<http://wmsc1.terrapages.net/getpngmap?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&tiled=true>
http://labs.metacarta.com/wms-c/Basic.py?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&tiled=true
<http://labs.metacarta.com/wms-c/Basic.py?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&tiled=true>
· Upon restarting uDig, (most times) wms-c layers are not
rendered and causes a NPE here:
_java.lang.NullPointerException_
at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
at java.lang.Double.parseDouble(Unknown Source)
at
net.refractions.udig.catalog.wmsc.server.TiledWebMapServer.<init>(_TiledWebMapServer.java:93_)
at
net.refractions.udig.catalog.internal.wmsc.WMSCServiceImpl.getWMSC(_WMSCServiceImpl.java:187_)
at
net.refractions.udig.catalog.internal.wmsc.WMSCServiceImpl.members(_WMSCServiceImpl.java:105_)
at
net.refractions.udig.catalog.internal.CatalogImpl.getChildById(_CatalogImpl.java:537_)
at
net.refractions.udig.catalog.internal.CatalogImpl.find(_CatalogImpl.java:292_)
· In Window à Preferences à WMS-C Tiles: Disk Cache
Location is ignored when preloading cache (win32), it is instead
just downloaded to "c:/tilecache"
· uDig crash's when preloading WMS-C layers, (NPE in
TileImageReadWriter.writeTile) (disk not full)
Possible issues / functionality to be implemented:
· On Disk Cache doesn't populate
Once these are fixed I will need to add:
· Cache expiry rules (as an extension to the current
options in WMS-C Tiles)
· Export plugin to export to MapInfo .TAB files
Cheers,
Johnathon Hudson
Software Engineer
LISAsoft Pty Ltd
john.hudson@xxxxxxxxxxxx <mailto:john.hudson@xxxxxxxxxxxx>
Level 1, 30 Currie Street
Adelaide SA 5000 AUSTRALIA
Ph: +61 8 8425 8050
Fax: +61 8 8425 8099
Mobile: +61 402 300 415
Website: www.lisasoft.com <http://www.lisasoft.com/>
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--
Graham Davis
Refractions Research Inc.
gdavis@xxxxxxxxxxxxxxx
_______________________________________________
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http://lists.refractions.net/mailman/listinfo/udig-devel
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