Java 2017 Code Sprint

The current plan is for the Java tribe to meet in Italy at the start of March. This page will allow us to plan the event.

We will be hosted at the GeoSolutions offices in beautiful Tuscany for a week long sprint.

Questions:

1. Who would be interested in joining as a participating?
2. Who would be interested in sponsoring? ;-)
3. Do you have any preferred week between say Feb 13 and end of March?

Participants

Please add your name and the projects you are planning to sprint and note the likehood of your attendance.

GeoServer

The GeoServer team really benefited from geoserver code sprint 2016 and is eager to repeat the success.

Plans

We are still at the planning stage so please let us know if a particular topic interests you or would be a deal breaker. The sprint does not have to be a single topic, if we can swarm a large beast good, but if someone wants to join and work on a side topic to leverage the presence of others, that’s good too.

CITE

CITE - upgrade the test harness, make sure the tests are still passing (probably they won’t), add new test that we are missing, WFS 2.0, WCS 2.0, CSW, WMTS 1.0, WPS 1.0, maybe GML and KML and GeoPackage, maybe stand up a reference server for OGC to use, with one test per workspace/virtual service?

REST API Update and and Documentation

REST API switch to Spring MVC (Andrea and Ian worried about making things worse user wise in terms of bugs) --- idea can we couple also fixing the actual bug reports in Jira? What about the other modules using restlet, importer and resource-rest-api, rest-upload, sldService, anything else? Need quite a bit of people.

Mapbox Style

The GeoServer application can be extended to work with multiple styling languages (SLD, CSS, YSLD). Mapbox has recently defined an open standard for drawing vector tiles that has been picked up by not only their own software but by the OpenLayers team. Initial investigation into this standard shows that it is a "whole" map standard similar to "sld" describing both the layers that make up the map, and the symbology used to represent them visually.

While some features (3d extrusions, camera and lighting angle) are not suitable for use by GeoServer the rest of it looks quite fun.

References:

• https://www.mapbox.com/mapbox-gl-style-spec/

• https://boundlessgeo.com/2017/01/using-mapbox-style-objects-open-layers/

Rough planning:

• Focus on styling a single layer using a mapbox style
  • Requires a parser for mapbox style capable of producing the internal geotools style objects; package as a geotools community module.
  • Setup geoserver extension and integration for new style format
• Whole map styling
  • LayerGroup defines both an order of layers, and the style associated with each layer - this information can be defined from a single mapbox style
  • (Optional) Consider offering SLD the same ability to define a LayerGroup

Library upgrades

Last year's sprint was devoted to updating a key library and required all hands on deck to help make the transition a smooth one. Ideally we would like to stay on top of library upgrades; however often a change to one has a cascade effect as we need to update (and test) each library in turn.

Plans =

The GeoTools codebase has a number of smaller of ideas that may of be of interest to volunteers:

• JDK 9 + maybe JDK 8 updates in the code base (like stream ready support for feature collection, where we can use lambda for profit)
• JDK 9 replacement for plugin system (service registry) is required

The above ideas may also be suitable to anyone attending remotely who like the focus and support of a dedicated code sprint block on the calendar.

Participants

#	Participant	Country	Organization	Arrival	Departure	Project Work on	Attendance / Notes
1	Andrea Aime	Italy	GeoSolutions			CITE or REST API switch	Preference for CITE, I'm game for the REST API switch too
2	Ian Turton	UK	Astun			CITE, Java 8 upgrade
3	Andrea Antonello	Italy	HydroloGIS			gvSIG and cross-project ideas	I have a strong preference for the end of March