On Jun 28, 2005, at 5:01 AM, Mariusz Chmielewski wrote:
>
> FIRST OF ALL THANX FOR THE ANSWERS
>
> my cadrg map is placed inside jar in directory data/rpf/
> so such path i specify in my properties file
> like this cadrgLayer1.paths=data/Rpf/
>
> is there an error???
If you are running on Windows, that path should be OK. For other OS
that are case-sensitive, it might be a problem. Your data jar file
should be in the classpath of the applet, you have to explicitly add
that.
> one more question I have due to the map provided by the
> SimpleHttpImageServer does the server provide only chunks of data
> such as frames of the map ?? I am asking to predict the maximum
> bandwitch.
> I would like to avoid situations in such the client has problems
> downloading the data.
No, the SimpleHttpImageServer provides the entire map window as an
image, which is why I expressed reservations about it being right for
you.
> and last but not least i would like to change the GUI look in the
> applet like the overview window and the layer panel (use a jtree
> for example or jtable) - please write some hints
The demo applet uses the OMControlPanel, look at the default
properties file for the commented-out openmap.components property.
The layer panel is the com.bbn.openmap.gui.LayersPanel, feel free to
replace that with whatever widget you design, you could make a panel
use a JTree in the same way. I'm unable to create an example for you
right now, sorry.
- Don
> OpenMap Support napisał(a):
>
>
>>
>> On Jun 18, 2005, at 4:40 PM, Mariusz Chmielewski wrote:
>>
>>
>>>
>>>
>>> OpenMap Support napisał(a):
>>>
>>>
>>>> Hi Mariusz,
>>>>
>>>> On Jun 17, 2005, at 3:19 AM, Mariusz Chmielewski wrote:
>>>>
>>>>
>>>>> Recently i had to using the OpenMap implement an applet viewing
>>>>> the
>>>>>
>>>>> CADRG data i tried serveral different solutions to achieve
>>>>> that and here are some conclutions:
>>>>> - including the CADRG data inside the JAR of an applet itself
>>>>> is not a grat idea, but i tried it and it is not working the
>>>>> framework shows errors taht the A.toc file is wrong i guess
>>>>> that Open Map is not able to load CADRG (RPF layer) from
>>>>> inside the JAR
>>>>>
>>>>
>>>>
>>>> No, the RpfLayer can read data from within a jar. Sounds like
>>>> a configuration problem.
>>>>
>>>
>>> HOW is that possible i tried it and all i get is wrong A.TOC
>>> (while lunching OpenMap from whithin JAR placed on HTML) but when
>>> i open it in eclipse (the file structure is the same as in JAR)
>>> the open map gets it right??
>>> for example Shape files are loaded in two cases properly. Whats
>>> wrong??
>>>
>>
>>
>> I don't know what you've tried, so I don't know what's wrong.
>> Are you getting an error? How are you storing the files in the
>> jar file, and how are you referencing the RPF directory in your
>> applet properties? Where is the A.TOC file in relation to your
>> RPF directory?
>>
>>
>>>>> - why do not allow the OpenMap Applet to load data from local
>>>>> resources after signing it by the trustred certificate is it
>>>>> so hard to implement??
>>>>>
>>>>
>>>>
>>>> Hopefully someone with experience with signed applets would be
>>>> able to answer this for you.
>>>>
>>>
>>> I signed the applet and it still daesn't work. I found some hint
>>> on openMap page that openmap doeas not allow usege of local
>>> resources - thats why i wrote the above statement.
>>>
>>
>>
>> I've never configured a signed applet to access local resources,
>> that's why I was hoping someone who had could help you.
>>
>>
>>>>> - what should be done to implement such functionality (on
>>>>> server side i implement a service which loads CADRG - and
>>>>> sends only scraps of needed data to applet on the client
>>>>> side ) can CADRG data be sent over HTTP??
>>>>>
>>>>
>>>>
>>>> Sure, you can specify the RPF directory as a URL and the
>>>> frames will be passed that way.
>>>>
>>>
>>> BUT what protocol to use in url??
>>>
>>
>>
>> http://path_to_RPF_directory_from_webserver_location
>>
>>
>>>>> - i read the documentation about the linked layer but i do
>>>>> not understand how to provide the data for the linked layer i
>>>>> use JBoss Application server (shoud i provide a servlet taht
>>>>> sends the byte data for the map) or FTP service on the server??
>>>>>
>>>>
>>>>
>>>> You would need to implement a LinkServer that provided the
>>>> OMRasters for CADRG data, but that would be slow, since the
>>>> LinkLayer doesn't know how to cache things from the server,
>>>> and you'd be constantly refreshing images with pans and zooms.
>>>>
>>>> There is a CORBA solution for an RPF server in the src/corba
>>>> tree that includes the client layer and server, but that
>>>> really requires you to be familiar with CORBA configurations.
>>>>
>>>>
>>>>> Is using applet a wrong idea for my application (shoud i use
>>>>> Web Service Instead )??
>>>>>
>>>>
>>>>
>>>> You could do that as well, but it depends on the connection
>>>> speed of the client and the size of the image you are sending
>>>> (could be slow). You would configure an ImageServer with a
>>>> CADRG layer (to start using a SimpleHttpImageServer), and use
>>>> a SHISPlugIn to display images from that image server. If the
>>>> performance was acceptable, then you would use the servlet to
>>>> handle the connection requests for the ImageServer instead of
>>>> the SimpleHttpImageServer, which can't handle heavy client loads.
>>>>
>>>>
>>> I need to use the openMap applet to allow user the statful
>>> control of the map. Is using the SimpleHttpImageServer will help
>>> me do so or it will only produce the pictures and send them to
>>> client. Becouse if so i do not want to preapere such picture
>>> server it doeas not suit the needs.
>>>
>>
>>
>> I was thinking that you could use the SimpleHttpImageServer to
>> provide RPF data on one layer only, for the current projection of
>> the map.
>>
>>
>>> I saw perfectly suitable app on Your page as example apps which
>>> uses OPENMAP - but when i tried to contact the author i didnot
>>> get any ansers. (Nest, by Alexander Sokolov, is an information
>>> environment for a decision support system. (Use the password
>>> "ttt" when prompted, after switching analysis tabs.)) i would
>>> like to achieve something like that specially the map resources
>>> loading. Any hints??
>>>
>>
>>
>> I think you are on the right track, you are just having trouble
>> with configuration.
>>
>> - Don
>>
>>
>>
>
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Received on Tue Jun 21 2005 - 10:46:00 EDT