| // Copyright (C) 2021 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.server.query.approval; |
| |
| import com.google.gerrit.extensions.client.ChangeKind; |
| import com.google.gerrit.index.query.Predicate; |
| import java.util.Collection; |
| import java.util.Objects; |
| |
| /** |
| * Predicate that matches patch set approvals we want to copy if the diff between the old and new |
| * patch set is of a certain kind. |
| */ |
| public class ChangeKindPredicate extends ApprovalPredicate { |
| private final ChangeKind changeKind; |
| |
| ChangeKindPredicate(ChangeKind changeKind) { |
| this.changeKind = changeKind; |
| } |
| |
| @Override |
| public boolean match(ApprovalContext ctx) { |
| if (ctx.changeKind().equals(changeKind)) { |
| // The configured change kind (changeKind) on which approvals should be copied matches the |
| // actual change kind (ctx.changeKind()). |
| return true; |
| } |
| |
| // If the configured change kind (changeKind) is REWORK it means that all kind of change kinds |
| // should be matched, since any other change kind is just a more trivial version of a rework. |
| if (changeKind == ChangeKind.REWORK) { |
| return true; |
| } |
| |
| // If the actual change kind (ctx.changeKind()) is NO_CHANGE it is also matched if the |
| // configured change kind (changeKind) is: |
| // * TRIVIAL_REBASE: since NO_CHANGE is a special kind of a trivial rebase |
| // * NO_CODE_CHANGE: if there is no change, there is also no code change |
| // * MERGE_FIRST_PARENT_UPDATE (only if the new patch set is a merge commit): if votes should be |
| // copied on first parent update, they should also be copied if there was no change |
| // |
| // Motivation: |
| // * https://gerrit-review.googlesource.com/c/gerrit/+/74690 |
| // * There is no practical use case where you would want votes to be copied on |
| // TRIVIAL_REBASE|NO_CODE_CHANGE|MERGE_FIRST_PARENT_UPDATE but not on NO_CHANGE. Matching |
| // NO_CHANGE implicitly for these change kinds makes configuring copy conditions easier (as |
| // users can simply configure "changekind:<CHANGE-KIND>", rather than |
| // "changekind:<CHANGE-KIND> OR changekind:NO_CHANGE"). |
| // * This preserves backwards compatibility with the deprecated boolean flags for copying |
| // approvals based on the change kind ('copyAllScoresOnTrivialRebase', |
| // 'copyAllScoresIfNoCodeChange' and 'copyAllScoresOnMergeFirstParentUpdate'). |
| return ctx.changeKind() == ChangeKind.NO_CHANGE |
| && (changeKind == ChangeKind.TRIVIAL_REBASE |
| || changeKind == ChangeKind.NO_CODE_CHANGE |
| || (ctx.isMerge() && changeKind == ChangeKind.MERGE_FIRST_PARENT_UPDATE)); |
| } |
| |
| @Override |
| public Predicate<ApprovalContext> copy( |
| Collection<? extends Predicate<ApprovalContext>> children) { |
| return new ChangeKindPredicate(changeKind); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(changeKind); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (!(other instanceof ChangeKindPredicate)) { |
| return false; |
| } |
| return ((ChangeKindPredicate) other).changeKind.equals(changeKind); |
| } |
| } |