Dissolve gerrit-server top-level directory

Change-Id: I538512dfe0f1bea774c01fdd45fa410a45634011

java/com/google/gerrit/server/git/CodeReviewCommit.java

@@ -0,0 +1,162 @@
+// Copyright (C) 2008 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.git;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.collect.Ordering;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.client.PatchSet;
+import com.google.gerrit.server.git.strategy.CommitMergeStatus;
+import com.google.gerrit.server.notedb.ChangeNotes;
+import java.io.IOException;
+import org.eclipse.jgit.errors.IncorrectObjectTypeException;
+import org.eclipse.jgit.errors.MissingObjectException;
+import org.eclipse.jgit.lib.AnyObjectId;
+import org.eclipse.jgit.lib.ObjectReader;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.eclipse.jgit.revwalk.RevWalk;
+
+/** Extended commit entity with code review specific metadata. */
+public class CodeReviewCommit extends RevCommit {
+  /**
+   * Default ordering when merging multiple topologically-equivalent commits.
+   *
+   * <p>Operates only on these commits and does not take ancestry into account.
+   *
+   * <p>Use this in preference to the default order, which comes from {@link AnyObjectId} and only
+   * orders on SHA-1.
+   */
+  public static final Ordering<CodeReviewCommit> ORDER =
+      Ordering.natural()
+          .onResultOf(
+              (CodeReviewCommit c) ->
+                  c.getPatchsetId() != null ? c.getPatchsetId().getParentKey().get() : null)
+          .nullsFirst();
+
+  public static CodeReviewRevWalk newRevWalk(Repository repo) {
+    return new CodeReviewRevWalk(repo);
+  }
+
+  public static CodeReviewRevWalk newRevWalk(ObjectReader reader) {
+    return new CodeReviewRevWalk(reader);
+  }
+
+  public static class CodeReviewRevWalk extends RevWalk {
+    private CodeReviewRevWalk(Repository repo) {
+      super(repo);
+    }
+
+    private CodeReviewRevWalk(ObjectReader reader) {
+      super(reader);
+    }
+
+    @Override
+    protected CodeReviewCommit createCommit(AnyObjectId id) {
+      return new CodeReviewCommit(id);
+    }
+
+    @Override
+    public CodeReviewCommit next()
+        throws MissingObjectException, IncorrectObjectTypeException, IOException {
+      return (CodeReviewCommit) super.next();
+    }
+
+    @Override
+    public void markStart(RevCommit c)
+        throws MissingObjectException, IncorrectObjectTypeException, IOException {
+      checkArgument(c instanceof CodeReviewCommit);
+      super.markStart(c);
+    }
+
+    @Override
+    public void markUninteresting(RevCommit c)
+        throws MissingObjectException, IncorrectObjectTypeException, IOException {
+      checkArgument(c instanceof CodeReviewCommit);
+      super.markUninteresting(c);
+    }
+
+    @Override
+    public CodeReviewCommit lookupCommit(AnyObjectId id) {
+      return (CodeReviewCommit) super.lookupCommit(id);
+    }
+
+    @Override
+    public CodeReviewCommit parseCommit(AnyObjectId id)
+        throws MissingObjectException, IncorrectObjectTypeException, IOException {
+      return (CodeReviewCommit) super.parseCommit(id);
+    }
+  }
+
+  /**
+   * Unique key of the PatchSet entity from the code review system.
+   *
+   * <p>This value is only available on commits that have a PatchSet represented in the code review
+   * system.
+   */
+  private PatchSet.Id patchsetId;
+
+  private ChangeNotes notes;
+
+  /**
+   * The result status for this commit.
+   *
+   * <p>Only valid if {@link #patchsetId} is not null.
+   */
+  private CommitMergeStatus statusCode;
+
+  public CodeReviewCommit(AnyObjectId id) {
+    super(id);
+  }
+
+  public ChangeNotes notes() {
+    return notes;
+  }
+
+  public CommitMergeStatus getStatusCode() {
+    return statusCode;
+  }
+
+  public void setStatusCode(CommitMergeStatus statusCode) {
+    this.statusCode = statusCode;
+  }
+
+  public PatchSet.Id getPatchsetId() {
+    return patchsetId;
+  }
+
+  public void setPatchsetId(PatchSet.Id patchsetId) {
+    this.patchsetId = patchsetId;
+  }
+
+  public void copyFrom(CodeReviewCommit src) {
+    notes = src.notes;
+    patchsetId = src.patchsetId;
+    statusCode = src.statusCode;
+  }
+
+  public Change change() {
+    return getNotes().getChange();
+  }
+
+  public ChangeNotes getNotes() {
+    return notes;
+  }
+
+  public void setNotes(ChangeNotes notes) {
+    this.notes = notes;
+  }
+}