Hi Emilio,
Thank you for the clarification.
Milan
On 29.12.2016 17:22, Emilio Lahr-Vivaz
wrote:
Hi Milan,
1. In general, I think using GeoServer to return GeoJSON over WFS
should be pretty performant. At least, I would assume that is the
case before investigating alternatives. There might be some
theoretical performance penalty over the REST API, as GeoServer
will be building the GeoJSON on the fly, while the REST API will
just return the stored GeoJSON directly. In practice this probably
won't matter. (One caveat - if you require the feature collection
size to be 100% accurate in the returned GeoJSON, the query will
end up being run twice. We default to an estimated size that
doesn't require the extra scan)
2. It's not possible to query existing features through the custom
REST API, sorry. The code assumes a simple feature type with
particular, well-known attributes.
Thanks,
Emilio
On 12/29/2016 03:31 AM, Milan Muňko
wrote:
Hello Matt,
thank you for your response, I would like to introduce the
use case:
I will ingest data into GeoMesa using custom scala code then
the node.js server needs to querry this data. (We will assume
that lots of data is written to geomesa and queried)
1.) Is there any performance cost using standard geoserver
WFS to query features?
2.) still, is it possible to query existing features (already
stored in GeoMesa) through REST endpoind?
Thank you,
-- Milan
On 28.12.2016 16:05, Matt Zimmerman
wrote:
Milan --
A little bit of clarification-- the interface that you are
trying to use is not the GeoServer interface but rather a
REST endpoint provided by GeoMesa. This endpoint is best
suited for GeoJSON data used end-to-end (ingest and
querying) within the interface described (http://www.geomesa.org/documentation/current/user/geojson.html).
If you've already ingested your data into GeoMesa via a
GeoTools interface (e.g. with the GeoMesa command line
tools), this is probably not what you want.
Rather, if you want to query GeoServer to get previously
ingested features in GeoJSON format, you will probably be
better off just using the standard GeoServer WFS interface
instead:
curl "http://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=<workspace>:trashbin&maxFeatures=50&outputFormat=application%2Fjson"
Obviously you will need to replace '<workspace>' with
the name of the workspace where you have created your layer.
Hope this helps!
-- Matt
On 12/28/2016 07:10 AM, Milan
Muňko wrote:
Hello everyone,
I followed instructions from https://github.com/ccri/geomesa/blob/fcr_docs_1.3/docs/user/geojson.rst#querying-features,
I would like to access features that I imported using
geomesa ingest through geoserver REST API.
I registered new datastore using /ds method with parameters
to the existing one, how should I configure index? e.g. this
is the output of geomesa get-schema
Using GEOMESA_ACCUMULO_HOME =
/home/milan/Tools/geomesa-accumulo_2.11-1.3.0-m2
INFO Describing attributes of feature 'trashbin' from
catalog table 'trashbin'...
globalId: String (Indexed - Join)
value: Integer
address: String
time: Long (Indexed - Join)
geom: Point (ST-Geo-index)
User data:
geomesa.keywords: [""]
geomesa.table.sharing: true
geomesa.indices: z2:2:3,records:2:3,attr:3:3
geomesa.table.sharing.prefix:
Thank you,
Milan
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