README.md

gs-ogcfeat-datastore

gs-ogcfeat-datastore is a Geoserver DataStore extension that can be used to publish cascaded collections from a backend OGCFeat service as WMS, WMTS or other Geoserver services.

Module Status

• Initial version - Work-in-Progress
• available As-Is

Geoserver / Geotools Version in branches

• main: gs 2.26.0, gt 32.0
• 2.26.0: gs 2.26.0, gt 32.0
• 2.25.3: gs 2.25.3, gt 31.3
• 2.25.0: gs 2.25.0, gt 31.0
• 2.24.2: gs 2.24.2, gt 30.2

License

• This Repository contains original code - see LICENSE
• This repository contains modified and derived code from both GeoTools and Geoserver
• GeoTools license
• GeoServer license

Features

• Supports publishing OGCFeat collections from a cascaded OGCFeat service
• Initializes datastore with data from backend OGCFeat service metadata links (see requirements for backend service below)
• Constructs featuretypes with metadata from backend OGCFeat schema responses
• BBOX filter MUST be supplied in Query
• Simple BBOX filtering is based on backend OGCFeat service BBOX filtering
• Complex filtering is implemented as backend OGCFeat service BBOX filtering with post processing via FilteringFeatureReader in gs-ogcfeat-datastore
• Projection support is based on backend OGCFeat service CRS support
• Supports next link paging and limiting of page size and page count

Requirements for backend OGCFeat service

• Backend OGCFeat service must support Landing page, conformance,collections,schema for this extension to work properly
• OGC API - Features - Part 1: Core
• OGC API - Features - Part 2: Coordinate Reference Systems by Reference
• OGC API - Features - Part 3: Filtering and Common Query Language (CQL2)
• OGC API - Features - Part 5: Schemas - draft partial Schema support for collections is required

Issues and Todos

• (x) Fix: Storing a Basic Auth authorized backend fails in outer Geoserver code? -- landing page, /conformance /collections schema etc work just fine after
• (x) Todo: Confirm compatibility with Geoserver AXIS ORDER and reprojections
• (/) Done: refactor to org.geotools.api interfaces and https://github.com/geotools/geotools/wiki/Remove-OpenGIS
• (x) Partial: JDK17+ and other compatibility issues https://github.com/geoserver/geoserver/wiki/Jakarta-EE -- github actions builds for JDK17, JDK21

Installation

• Copy target/gs-ogcfeat-datastore-2.24.2.jar and swagger-models-2.2.16.jar to geoserver/WEB-INF/lib

Usage

• add an OGCFeat datastore and publish layers as usual
• Datastore URL is the OGCFeat service landing page