[OpenLayers-Users] Changing map file FILTER parameter via URL -
WFS layer with OVF connection
Pedrazzi Gelsomini
pedrazzi.gelsomini at gmail.com
Fri Feb 16 13:43:22 EST 2007
Thank you very much for your help.
I should ask you more information beacause i can't understand what i have to
do.
> var filter =
'<Filter><PropertyIsEqualTo><PropertyName>user_id</PropertyName><Literal>3</Literal><
> /PropertyIsEqualTo></Filter>';
> mylayer.mergeNewParams({"filter":filter});
Putting these instruction above i have the following error
"this.map has no properties"
(Grid.js - line 171 - var viewSize = this.map.getSize();
Do i have to insert these instructions after mylayer initialization, that is
in the function init() that creates my map?
Is it correct put in the <PropertyName> the name of a field that I get from
the SELECT query of the OVF file?
Is it enough to add this code lines or I have to do something other in order
to make working the Filter Encoding?
Sorry for the trivial questions but i am quite new in this subject.
Thanks a lot for your time!
2007/2/16, Bart van den Eijnden (OSGIS) <bartvde at osgis.nl>:
>
> Hi,
>
> you need to use the FILTER parameter from the OGC WFS spec to do this,
> check
> this for more info:
>
> http://mapserver.gis.umn.edu/docs/howto/filterencoding/
>
> then you need to call mergeNewParams on your OpenLayers layer:
>
> var filter = '<Filter><PropertyIsEqualTo><PropertyName>USER</PropertyName>
> <Literal>Peter</Literal></PropertyIsEqualTo></Filter>';
>
> mylayer.mergeNewParams({"filter":filter});
>
> Best regards,
> Bart
>
> --
> Bart van den Eijnden
> OSGIS, Open Source GIS
> http://www.osgis.nl
>
>
> --------- Oorspronkelijk bericht --------
> Van: Pedrazzi Gelsomini <pedrazzi.gelsomini at gmail.com>
> Naar: users at openlayers.org < users at openlayers.org>
> Onderwerp: [OpenLayers-Users] Changing map file FILTER parameter via URL -
> WFS layer with OVF connection
> Datum: 16/02/07 13:02
>
> > Hi everyone,I m using openlayers for my application and I have a WFS
> layer
> filled by my mysql database using mapserver.My layer inizialitazion is:
> > var user_wfs = new OpenLayers.Layer.WFS( "User Points",
> >
> >
>
>
>
>
> "http://localhost/cgi-bin/mapserv?map=/var/www/thesilence/webroot/mapserver/config/data_points.map&
> > ",
> >
> > {typename:
> "points"}, { featureClass: OpenLayers.Feature.WFS});
> >
> > In my file.map i have the following layer:LAYER
> CONNECTION "my_points.ovf" CONNECTIONTYPE
> OGR DATA "points" METADATA
>
> "wms_srs"
> "EPSG:4326"
> >
> "wms_title"
> "points"
> "wfs_srs"
> "EPSG:4326"
> "wfs_title"
> "points"
> "gml_featureid"
> "fid"
> >
> "gml_include_items"
> "all" END NAME
> "points" SIZEUNITS PIXELS
> STATUS ON DUMP TRUE
> PROJECTION
> "init=epsg:4326" END
> > TOLERANCE 20 TOLERANCEUNITS
> PIXELS TYPE POINT UNITS
> METERS FILTERITEM
> "user_id" #FILTER ""where
> my_points.ovf is:<OGRVRTDataSource>
> > <OGRVRTLayer
> name="points">
> <SrcDataSource>ODBC:myuser/mypsw at mydns
> </SrcDataSource>
> <SrcSQL> SELECT data_points.id
> AS
> fid, latitude, longitude, des_walks.com_user_id AS user_id
> > FROM data_points JOIN
> des_walks WHERE des_walks.id =
> data_points.des_walk_id
> </SrcSQL>
> <GeometryType>wkbPoint</GeometryType>
> <LayerSRS>WGS84</LayerSRS>
> > <GeometryField
> encoding="PointFromColumns" x="longitude"
> y="latitude"/>
> </OGRVRTLayer></OGRVRTDataSource>but I need to change the
> value
> of the FILTER parameter in the map file via URL.
> >
> > The connection with database works and allows me to put my points on my
> map.I would like to filter these data by "user_id" and show only
> the data linked to a specific user, but i have to pass this parameter via
> url because it is not always the same.
> >
> > Now i m passing just the typename in the openlayers function, but i dont
>
> know how to change the FILTER parameter in my map file.
> FILTERITEM "user_id"
> > #FILTER ""Any suggestion?Thank you very
> much!
> >
> >
> >
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at openlayers.org
> > http://openlayers.org/mailman/listinfo/users
> >
>
>
>
>
--
Ilaria Gelsomini
Francesca Pedrazzi
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