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@title Owners User Guide
@group userguide
Group files in a codebase into packages and define ownership.
Overview
========
The Owners application allows you to group files in a codebase (or across
codebases) into packages. This can make it easier to reference a module or
subsystem in other applications, like Herald.
Creating a Package
==================
To create a package, choose a name and add some files which belong to the
package. For example, you might define an "iOS Application" package by
including these paths:
/conf/ios/
/src/ios/
/shared/assets/mobile/
Any files in those directories are considered to be part of the package, and
you can now conveniently refer to them (for example, in a Herald rule) by
refering to the package instead of copy/pasting a huge regular expression
into a bunch of places.
If new source files are later added, or the scope of the package otherwise
expands or contracts, you can edit the package definition to keep things
updated.
You can use "exclude" paths to ignore subdirectories which would otherwise
be considered part of the package. For example, you might exclude a path
like this:
/conf/ios/generated/
Perhaps that directory contains some generated configuration which frequently
changes, and which you aren't concerned about.
After creating a package, files the package contains will be identified as
belonging to the package when you look at them in Diffusion, or look at changes
which affect them in Diffusion or Differential.
Files in Multiple Packages
==========================
Multiple packages may own the same file. For example, both the
"Android Application" and the "iOS Application" packages might own a path
like this, containing resources used by both:
/shared/assets/mobile/
If both packages own this directory, files in the directory are considered to
be part of both packages.
Packages do not need to have claims of equal specificity to own files. For
example, if you have a "Design Assets" package which owns this path:
/shared/assets/
...it will //also// own all of the files in the `mobile/` subdirectory. In this
configuration, these files are part of three packages: "iOS Application",
"Android Application", and "Design Assets".
(You can use an "exclude" rule if you want to make a different package with a
more specific claim the owner of a file or subdirectory.)
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