Re: [Geotools-gt2-users] Custom datastore for geoserver

[Jody G. <jod...@gm...>]

Okay it sounds like you are on your way then - app-schema is solving the opposite problem (how to format the output exactly conforming to a provided schema).

The property datastore is clear - and extends abstract datastore - allowing you to quickly make a read-only datastore that talks to your web service.
I started writing a sequal to this tutorial making use of "ContentDataStore"; but have not found an oppertunity to finish.

Jody


On 23/01/2011, at 4:03 PM, Keith, Kenny W Mr ARMY GUEST USA USAREUR 7A USA wrote:

> Yes you are correct, the format will be the same each time, the only difference will be the data itself. so a good example would a external web service that returns the locations of shipping trucks in a country. the format will always be the same, but the locations of the trucks will be different obviously. I would like to have that be served out as a SLD styled wms vector layer... i do not at this time think i would need to modify it via WFS. i read through the app-schema tutorial but it seems like a custom datastore would be better..... ive already written most of the code kinda using the properties file datastore tutorial but i get confused because im not sure exactly the process is.
> 
> ----- Original Message -----
> From: Jody Garnett <jod...@gm...>
> Date: Sunday, January 23, 2011 5:01
> Subject: Re: [Geotools-gt2-users] Custom datastore for geoserver
> To: "Keith, Kenny W Mr ARMY GUEST USA USAREUR 7A USA" <ken...@us...>
> Cc: geo...@li...
> 
>> Oh I think I understand you; you are hitting up an external service 
>> (perhaps for weather information for example) - and the output for 
>> that is the same each time. You want to parse that input and push 
>> the results out of the DataStore API into geoserver (and thus out 
>> as all the formats geoserver supports).
>> 
>> Do I understand you correctly?
>> 
>> Jody
>> 
>> On 23/01/2011, at 8:45 AM, Keith, Kenny W Mr ARMY GUEST USA USAREUR 
>> 7A USA wrote:
>> 
>>> well what i mean is the xml return is in a format that i know 
>> what each element is. It will return a lat lon so a geometry point 
>> will need to be created for that im assuming... so you think the 
>> app schema will work? is there a tutorial somewhere that will give 
>> me an idea of how to do this?
>>> 
>>> ----- Original Message -----
>>> From: Jody Garnett <
>>> Date: Saturday, January 22, 2011 23:25
>>> Subject: Re: [Geotools-gt2-users] Custom datastore for geoserver
>>> To: "Keith, Kenny W Mr ARMY GUEST USA USAREUR 7A USA" <
>>> Cc: geo...@li...
>>> 
>>>> The DataStore api is used to access data; at the Java level.
>>>> 
>>>> The part about returning its content is a known xml schema not 
>>>> exactly on
>>>> track with that; at the Java level we have a data structure called
>>>> FeatureType which describes what infromation is available. 
>>>> GeoServer takes
>>>> this FeatureType description and is able to advertise it as either 
>>>> a GML3
>>>> Schema or a GML2 Schema.
>>>> 
>>>> The application schema module in geotools; combined with GeoServer is
>>>> intended to address your issue. It allows you to map elements of 
>>>> data access
>>>> (ie the datastore api) to a specific target schema.
>>>> 
>>>> Jody
>>>> 
>>>> On Sat, Jan 22, 2011 at 3:32 PM, Keith, Kenny W Mr ARMY GUEST USA 
>>>> USAREUR 7A
>>>> USA <>> 
>>>>> Hello list, im looking to create a custom datastore for geoserver. ive read
>>>>> through the api and a few tutorials including the properties file tutorial.
>>>>> Unfortunately im still kind of confused. The datastore i wish to create and
>>>>> implement would be a datastore that would connect to a web service that
>>>>> returns it's content in a known xml schema. what i would like to do is have
>>>>> geoserver connect to this webservice get the xml content and parse it. once
>>>>> parsed the necessary information geoserver needs would be available.... i
>>>>> understand this is really just coding and i feel i can handle this
>>>>> project... the only challenge i have is understanding where to start, what i
>>>>> need and the best process to use in order to ensure that geoserver will
>>>>> recognize the featuretypes,feature content, datastore etc. If anyone could
>>>>> assist me with this it would be greatly appreciated.
>>>>> 
>>>>> 
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>>