[mapserver-users] How to integrate Openlayers + MapScript C# + Postgis

[Stephen Woodbridge]

You might want to looks at this:

http://trac.osgeo.org/openlayers/wiki/Addins/OWSManager

-Steve

On 3/14/2013 11:17 AM, Stephen Woodbridge wrote:
> On 3/14/2013 10:47 AM, Marco Araujo wrote:
>> Thanks Stephen,
>>
>> I believe that it would not to use CGI for I will apply different
>> filters on the data map.
>> For example, my User can filter the map by rivers, companies, names of
>> residents, etc..
>
> This can all be done in WMS by selecting what layers you want.
> Create a control on your map based on getting a list of layers via the
> getCapabilities document and then use the control to select the layers
> request via WMS.
>
>> In some cases, such as streets, will display the map with the selected
>> street.
>
> Create a simple .NET ajax handler where you pass the street name and it
> returns the extents, then have OpenLayers zoom to that extent.
>
>> I believe that it is not possible to do in CGI. So understand that I
>> need to use mapscript.
>
> I assume you are planning to code controls in Javascript to interact
> with the user. Rather than write a huge complicated application that has
> to simulate WMS, write small quick ajax handlers to get what you need
> from the client and have OpenLayers do the work. This is more scalable,
> more modular, and probably much easier to design, code, and test.
>
>> How can I get an example to simulate a WMS service to receive the
>> parameters of openlayers?
>
> I'm not aware of any, maybe other know and have something they can share.
>
>> Well I'll need to get these parameters in the database (using 'select
>> from where params') in order to assemble the map and return to
>> openlayers.
>
> Mapserver support WMS requests and you can parameterize the mapfile. In
> OpenLayers you can make WMS requests which already give you most of the
> control you mention above, and by knowing that you have additional
> parameters that you set in the mapfile (you may not even need to do
> that) you can add  them to the url.
>
> You need to learn more about OpenLayers and mapserver and WMS. Start
> there and figure out how to turn on/off layers and how to work with the
> getCapabilities document.
>
> google: openlayers getcapabilities layers
>
> and look at some of these.
>
> -Steve
>
>>
>>
>> Sincerely,
>> Marco
>>
>>
>>  > Date: Thu, 14 Mar 2013 10:02:16 -0400
>>  > From: woodbri at swoodbridge.com
>>  > To: mapserver-users at lists.osgeo.org
>>  > Subject: Re: [mapserver-users] How to integrate Openlayers +
>> MapScript C# + Postgis
>>  >
>>  > On 3/14/2013 9:24 AM, Marco Araujo wrote:
>>  > > Hi everybody,
>>  > >
>>  > > I'm trying to develop an application (ASP.NET C#) that gets the
>> database
>>  > > (postgis) map through conditions "where" and process adjustments by
>>  > > mapscript and provide the map to be viewed by openlayer.
>>  >
>>  > If I understand correctly, you want to use .NET to control what is
>>  > displayed in the map.
>>  >
>>  > First I would make sure that you can not do everything you need using
>>  > mapserver cgi parameter substitution as this might be much simpler.
>>  >
>>  > > Can anyone guide me on how I should proceed?
>>  >
>>  > Assuming that the above will not work, then you are going to have to
>>  > make you mapscript application simulate a WMS service so you can
>> call it
>>  > from OpenLayers.
>>  >
>>  > Now:
>>  >
>>  > data ---> mapserver ----> OpenLayers
>>  >
>>  > In this you would program in JavaScript and change the url for the map
>>  > requests to pass parameters and do parameter substitution in the
>>  > mapfile. This is a standard Web 2.0 approach.
>>  >
>>  > With mapscript:
>>  >
>>  > data ---> your.net -----> OpenLayers
>>  >
>>  > Here you have to simulate a WMS service so you can talk to OpenLayers
>>  > and then read the parameters from OpenLayers to control your .NET code
>>  > and how it interacts with mapserver. Since you have to pass parameters
>>  > to the server anyway, I would start and see if you can do it with the
>>  > existing mapserver code.
>>  >
>>  > -Steve W
>>  >
>>  > > I need a WMS (mapserver) to display dynamic data (from database)?
>>  > >
>>  > > Already have the following:
>>  > > 1. up and running MapServer CGI in my Windows2008 (64bits) under
>> IIS 7.5
>>  > > (not apache).
>>  > >
>>  > > 2. The database postgis mount but I have no idea how to retrieve
>> the data
>>  > > and presents it in openlayers.
>>  > >
>>  > > 3. Tests (successfully) with openlayers presenting a static map of
>>  > > mapserver as follows:
>>  > > /layer = new OpenLayers.Layer.WMS("WorldMap",
>>  > > "http://localhost/MapServer/mapserv.exe?
>>  > >
>> map=C:/maps/itasca.map&mode=map&template=openlayers&layer=lakespy2&layer=dlgstln2");/
>>
>>  > >
>>  > > If you can help me I appreciate it.
>>  > >
>>  > > Sincerely,
>>  > > Marco Araujo
>>  > > Brazil / Sao Paulo
>>  > >
>>  > >
>>  > >
>>  > > _______________________________________________
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>>  > > mapserver-users at lists.osgeo.org
>>  > > http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>  > >
>>  >
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