[Portugal] GeoServer 2.1 Beta Released!

[Hugo Martins]

  Sent to you by Hugo Martins via Google Reader: GeoServer 2.1 Beta
Released! via GeoServer Blog by Justin Deoliveira on 9/4/10

Just in time for FOSS4G the GeoServer community is pleased to announce
the release of 2.1 beta1. The first beta release of the long awaited
2.1 branch is now available for download. Anticipation for this release
has been growing over the last few months due to the number of notable
new features it brings. Let’s go down the list.
WMS Cascading
Something users have asked for since the addition of WMS support itself
is cascading, the ability of GeoServer to proxy for another remote WMS
server like MapServer or another GeoServer. This feature has many uses
such as pulling in a remote base layer and overlaying local vector data
onto it or securing a locally unsecured map server. Special thanks to
the University of Perugia for sponsoring this feature.

Read more about WMS cascading.
Virtual Services
Anyone who has published a large number of layers or feature types with
GeoServer has probably at some point been annoyed by the fact that
every single layer is published by a single global service. WMS has the
ability to group and nest layers but WFS and WCS have no such
equivalent. Well now with virtual services one can create multiple
service endpoints within a single physical geoserver instance.

Special thanks to Landgate for funding this work.

Read more about virtual services.
Layers from SQL
GeoServer has always been good at publishing a flat database table. But
users often need to do more such as pre filter the data in a table, or
join two tables together, or generate column values on the fly with a
function. Before this feature the recommendation was to create a view.
However views can be a maintenance burden and are at times problematic.

Now one can create a layer directly from an SQL query. And on top of
that query definitions can be parameterized which allows one to create
dynamic queries on the fly. These parameters can be restricted with
regular expressions in order to prevent an SQL injection security hole.

Special thanks to Andrea for spending much of his personal time on this
one. And also to OBIS who provided the funding for the parametric
component of the work.

Read more about SQL layers.
WPS
With 2.1 and the arrival of WPS we welcome a new OGC service to the
family. The Web Processing Service is an OGC service for performing
geospatial analysis functions over the web. The specification is
extensible in nature and allows for simple processes like buffering a
geometry to more complex processes such as image processing.

Historically GeoServer has been focused primarily on data delivery
without any tools for performing analysis of spatial data. WPS fills
that gap making GeoServer a more compete solution for geospatial web
services.

Thanks to Refractions Research for the initial contribution of the WPS
module and to Andrea once again for taking personal time to bring WPS
support to its current state.

Read more about WPS. Download the WPS extension now to try it out.
Unit of Measure
Support for units in SLD allows one to specify values in measurements
other than pixels such as feet or meters. This adds a very powerful
capability to SLD that in many cases alleviates the need for multiple
scale dependent rendering rules. This has the upside of greatly
simplifying complex SLD documents.

Special thanks to Milton Jonathan who did the initial GeoTools work to
make unit of measure support possible and to Andrea for working with
Milton to improve the initial patch. Note that this feature has also
been backported to the stable 2.0.x branch. Thanks to SWECO and Malmö
City of Sweden for sponsoring the backport.

Read more about UOM support.
DPI Scaling
By default GeoServer renders images at a resolution of 90 DPI. While
this is acceptable for the standard screen it is not acceptable for
print which requires a higher resolution. Now it is possible to supply
a format option to a WMS request on the fly that controls the DPI
setting.

Special thanks again to SWECO and to Malmö City of Sweden for
sponsoring this work. Note also that this feature has also been
backported to the stable 2.0.x branch.

Read more about DPI scaling.
And More
And as usual this release comes with a number of bug fixes and minor
improvements. Check out the entire changelog. Help us get to 2.1.0 by
downloading the beta and trying it out. Be sure to report any issues on
the mailing list or in the bug tracker.

Thanks for using GeoServer!

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