Hi all,
I am currently testing the ogcapi function in the current Mapserver
8.4 and already have an example online:
https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/collections?f=html
In the first collection, all objects (approx. 48,000 point objects
from a Postgis DB) are queried. Unfortunately extremely slow.
If I query all objects via a WMS, they come very quickly, it should
not be due to the DB or the connection, everything is cleanly indexed
etc.:
https://kulturdb.de/cgi-bin/mapserv?map=kdb&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=49.49%2C6.0739%2C50.4%2C7.296&CRS=EPSG%3A4326&WIDTH=762&HEIGHT=588&LAYERS=kdb_alle&STYLES=&FORMAT=image%2Fpng
With the second collection with only 333 objects, it works quite well:
https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/collections/kdb_brunnen/items?f=html
Here is the map file for it
MAP
NAME "kdb_trier"
STATUS ON
SIZE 400 400
EXTENT 6.074 49.492 7.296 50.435
UNITS METERS
PROJECTION
"init=epsg:4326"
END
WEB
METADATA
# OGC API Features Konfiguration
"ows_enable_request" "*"
"ows_getfeatureinfo_formatlist"
"text/plain,text/html,application/json,application/vnd.ogc.gml,gml"
"oga_onlineresource"
"https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi";
"oga_title" "KDB Trier"
"oga_abstract" "Objekte der
Kulturdatenbank der Region Trier"
"oga_srs" "EPSG:25832 EPSG:4326
EPSG:3857"
"oga_html_template_directory"
"/var/www/html/ogcapi/templates/html-bootstrap4/"
"oga_extent" "6.074 49.492 7.296
50.435"
"oga_use_default_extent_for_getfeature" "true"
"oga_limit_default" "10"
"oga_limit_max" "500"
"oga_paging" "true"
"oga_paging_linkheader" "true"
"gml_include_items" "all"
"gml_featureid" "lfdnr"
END
TEMPLATE "/var/www/mapserver/template/dummy.html"
END
OUTPUTFORMAT
NAME "png"
DRIVER AGG/PNG
MIMETYPE "image/png"
IMAGEMODE RGB
EXTENSION "png"
FORMATOPTION "GAMMA=0.75"
END
OUTPUTFORMAT
NAME "application/json"
DRIVER "OGR/GEOJSON"
MIMETYPE "application/json"
FORMATOPTION "FORM=SIMPLE"
FORMATOPTION "STORAGE=memory"
END
SYMBOL
NAME "circle"
TYPE ELLIPSE
POINTS
1 1
END
FILLED TRUE
END
LAYER
NAME "kdb_alle"
TYPE POINT
STATUS ON
INCLUDE "_connection_kdb.inc"
DATA "the_geom FROM kdb_kultur_ogr USING UNIQUE lfdnr"
PROJECTION
"init=epsg:4326"
END
METADATA
# OGC API Features Metadaten
"oga_title" "KDB Trier - alle
Objekte"
"oga_description" "Alle Objekte der
Kulturdatenbank der Region Trier"
"oga_id_field" "lfdnr"
"oga_queryable" "true"
"oga_extent" "6.074 49.492 7.296
50.435"
"ows_title" "KDB Trier - alle
Objekte"
"ows_abstract" "Alle Objekte der
Kulturdatenbank der Region Trier"
"oga_extent" "6.074 49.492 7.296
50.435"
"oga_use_default_extent_for_getfeature" "true"
"oga_limit_default" "10"
"oga_limit_max" "500"
"oga_paging" "true"
"oga_paging_linkheader" "true"
"gml_include_items" "all"
"gml_featureid" "lfdnr"
END
TEMPLATE "/var/www/mapserver/template/dummy.html"
CLASS
NAME "KDB"
STYLE
SYMBOL "circle"
SIZE 6
COLOR 255 0 0
OUTLINECOLOR 255 255 255
END
END
END # LAYER
LAYER
NAME "kdb_brunnen"
TYPE POINT
STATUS ON
INCLUDE "_connection_kdb.inc"
DATA "the_geom FROM (SELECT * FROM kdb_kultur_ogr WHERE b_kateg
= 'Brunnen') AS foo USING UNIQUE lfdnr"
PROJECTION
"init=epsg:4326"
END
METADATA
# OGC API Features Metadaten
"oga_title" "KDB Trier - Brunnen"
"oga_description" "Brunnen Objekte der
Kulturdatenbank der Region Trier"
"oga_id_field" "lfdnr"
"oga_queryable" "true"
"oga_extent" "6.074 49.492 7.296
50.435"
"ows_title" "KDB Trier - Brunnen"
"ows_abstract" "Brunnen Objekte
der Kulturdatenbank der Region Trier"
"oga_extent" "6.074 49.492 7.296
50.435"
"oga_use_default_extent_for_getfeature" "true"
"oga_limit_default" "10"
"oga_limit_max" "500"
"oga_paging" "true"
"oga_paging_linkheader" "true"
"gml_include_items" "all"
"gml_featureid" "lfdnr"
END
TEMPLATE "/var/www/mapserver/template/dummy.html"
CLASS
NAME "KDB"
STYLE
SYMBOL "circle"
SIZE 6
COLOR 255 0 0
OUTLINECOLOR 255 255 255
END
END
END # LAYER
END # MAP
THE MS Version:
MapServer version 8.4.0 PROJ version 9.1 GDAL version 3.6 OUTPUT=PNG
OUTPUT=JPEG OUTPUT=KML SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE
SUPPORTS=CAIRO SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER
SUPPORTS=SOS_SERVER SUPPORTS=OGCAPI_SERVER SUPPORTS=FASTCGI
SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR
INPUT=GDAL INPUT=SHAPEFILE INPUT=FLATGEOBUF
1. How can I speed up the display for the first collection?
2. the collections are not recognised in QGIS, What ist wrong?
Thanx
Sven
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