Make SubmitRule#evaluate return an Optional instead of a Collection

The original specification used a Collection so that a single SubmitRule
can return multiple SubmitRecords. The main use-case was inheritance and
being open to more future usages.

Looking at this today, this seems strange because a SubmitRecord keeps a
list of SubmitRequirements, so even if it is not allowed to return a
Collection, it can still contribute a number of SubmitRecords.

This does invalidate the original reasoning from using a Collection
which is why this commit replaces it with an Optional.

Change-Id: I0dce438504b30fe102f5b83af9f7976659f1fae8
16 files changed
tree: cf5ec3897ae80611c331c40fec67f9ba327315c6
  1. .settings/
  2. antlr3/
  3. contrib/
  4. Documentation/
  5. java/
  6. javatests/
  7. lib/
  8. plugins/
  9. polygerrit-ui/
  10. prolog/
  11. prologtests/
  12. proto/
  13. resources/
  14. tools/
  15. webapp/
  16. .bazelproject
  17. .bazelrc
  18. .bazelversion
  19. .editorconfig
  20. .git-blame-ignore-revs
  21. .gitignore
  22. .gitmodules
  23. .mailmap
  24. .pydevproject
  25. BUILD
  26. COPYING
  27. INSTALL
  28. package.json
  29. README.md
  30. SUBMITTING_PATCHES
  31. version.bzl
  32. WORKSPACE
README.md

Gerrit Code Review

Gerrit is a code review and project management tool for Git based projects.

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Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.

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NOTE: release is a counter that starts with 1 and indicates the number of packages that have been released with the same version of the software.

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On Fedora run:

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    docker run -p 8080:8080 gerritforge/gerrit-centos7[:version]

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