Here is a test case :
CREATE TABLE places
(
ref_id character(8) NOT NULL,
emplacement geometry,
CONSTRAINT "mainKey" PRIMARY KEY (ref_id)
)
WITH (OIDS=FALSE);
ALTER TABLE places OWNER TO admin;
//dont forget to add the column in the geometry_columns
insert into places values('SCR08123', GeometryFromText('POINT(1 3)',4326));
CREATE OR REPLACE VIEW myview AS
SELECT places.ref_id, places.emplacement
FROM places;
ALTER TABLE myview OWNER TO admin;
final Map params = new HashMap<String, Object>();
params.put("dbtype", "postgis");
params.put(PostgisDataStoreFactory.HOST.key, "...");
params.put(PostgisDataStoreFactory.PORT.key, 5432);
params.put(PostgisDataStoreFactory.SCHEMA.key, "public");
params.put(PostgisDataStoreFactory.DATABASE.key, "...");
params.put(PostgisDataStoreFactory.USER.key, "...");
params.put(PostgisDataStoreFactory.PASSWD.key, "...");
DataStore store = DataStoreFinder.getDataStore(params);
FeatureSource fs = store.getFeatureSource("myview");
fs.getBounds(); //RAISE ERROR
First try to connect to the Table, it works
Next try to connect to the view and you will have a :
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.vividsolutions.jts.geom.Envelope.init(Envelope.java:254)
at com.vividsolutions.jts.geom.Envelope.<init>(Envelope.java:186)
at
org.geotools.geometry.jts.ReferencedEnvelope.<init>(ReferencedEnvelope.java:203)
Andrea Aime a écrit :
> johann sorel ha scritto:
>> Hi,
>>
>> I have uncounter a strange problem in the postgis module.
>>
>> I am trying to use a postgis datastores, It works fine for tables but
>> when you try to
>> use a view you MUST have a field named "oid".
>> In fact this "oid" name is hard coded in the module source and it
>> goes crazy when you
>> try to open a view that doesnt have this field.
>>
>> Can someone explain me why there is such a thing ?
>> And eventually how can I avoid to have this field in my postgis views.
>
> oid was a field old Postgres versions always had and that has been
> removed in the latest versions (during the last 2-3 years actually).
> It was a sort of implicit primary key, no two records in the same
> database could have the save oid value.
> The postgis datastore can use that as a pk when no other is available.
> Yet, I'm pretty sure many GeoServer users are using views without
> any oid field and it works fine.
>
> Can you detail a little more your use case, provide a database
> dump and a stand alone test case?
> The most likely thing is that you're hitting the
> datastore in a way that GeoServer is not using, I need details
> to replicate the issue.
>
> Cheers
> Andrea
>
--
Johann Sorel
Company - Geomatys GIS Developer
Mail - [EMAIL PROTECTED]
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