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// Copyright (C) 2012 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.submit;
import com.google.gerrit.server.git.CodeReviewCommit;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
public class MergeIfNecessary extends SubmitStrategy {
MergeIfNecessary(SubmitStrategy.Arguments args) {
super(args);
}
@Override
public List<SubmitStrategyOp> buildOps(Collection<CodeReviewCommit> toMerge)
throws IntegrationException {
List<CodeReviewCommit> sorted = args.mergeUtil.reduceToMinimalMerge(args.mergeSorter, toMerge);
List<SubmitStrategyOp> ops = new ArrayList<>(sorted.size());
if (args.mergeTip.getInitialTip() == null
|| !args.submoduleOp.hasSubscription(args.destBranch)) {
CodeReviewCommit firstFastForward =
args.mergeUtil.getFirstFastForward(args.mergeTip.getInitialTip(), args.rw, sorted);
if (firstFastForward != null && !firstFastForward.equals(args.mergeTip.getInitialTip())) {
ops.add(new FastForwardOp(args, firstFastForward));
}
}
// For every other commit do a pair-wise merge.
while (!sorted.isEmpty()) {
CodeReviewCommit n = sorted.remove(0);
ops.add(new MergeOneOp(args, n));
}
return ops;
}
static boolean dryRun(
SubmitDryRun.Arguments args, CodeReviewCommit mergeTip, CodeReviewCommit toMerge)
throws IntegrationException {
return args.mergeUtil.canFastForward(args.mergeSorter, mergeTip, args.rw, toMerge)
|| args.mergeUtil.canMerge(args.mergeSorter, args.repo, mergeTip, toMerge);
}
}
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