-workingset PARAMETER ( ',' PARAMETER ) *

A workingset is a name for a group of projects that have something in common. You can tag a project for one or more workingsets using the -workingset instruction in the bnd.bnd file. For example, to make a project member of the Implementations and Drivers working sets you can enter the following in a bnd file:

-workingset Implementations, Drivers

An IDE can use this information to provide a grouping to projects. However, this information can also be used to tag bundles in the Manifest, like:

Bundle-Category ${-workingset.*}

The syntax for the instruction is:

workingset := '-workingset' tag ( ',' tag )*
tag        := NAME ( ';member=' TRUTHY )?
NAME       := <JavaIdentifierPart+>

The instruction is a merged instruction so you can also set:

-workingset.all All

Note that, the name of the working set must use the pattern of Java identifier.

More Advanced Usage

As you could see in the syntax, you can also specify a member attribute on the tag. This member attribute evaluates to a truthy. A truthy is true if it is not empty, 0, nor false. The truthy is well supported by macros so you can now use the bnd macro language to decide if a project should be a member of a working set or not. This can be used in many ways. For example, you could use it to do name matching. By placing the following in the cnf/build.bnd file you do not have to place the -workingset instruction in each bnd file.

-workingset =  \
  impl;member=${filter;${p};.*\.provider}, \
  api;member=${filter;${p};.*\.api}, \
  test;member=${filter;${p};.*\.test}

The feature will create working sets as demanded but will reuse existing working set with the matching name. If no -workingset instruction is given, the working sets are not touched in any way for that project. That is, they are then not removed from existing sets.