1 files changed, 62 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/restapi/change/ListChangeMessages.java b/java/com/google/gerrit/server/restapi/change/ListChangeMessages.java
new file mode 100644
index 0000000000..9ce21574bb
--- /dev/null
+++ b/java/com/google/gerrit/server/restapi/change/ListChangeMessages.java
@@ -0,0 +1,62 @@
+// Copyright (C) 2018 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.restapi.change;
+
+import static com.google.gerrit.server.ChangeMessagesUtil.createChangeMessageInfo;
+
+import com.google.gerrit.extensions.common.ChangeMessageInfo;
+import com.google.gerrit.extensions.restapi.RestReadView;
+import com.google.gerrit.reviewdb.client.ChangeMessage;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.ChangeMessagesUtil;
+import com.google.gerrit.server.account.AccountLoader;
+import com.google.gerrit.server.change.ChangeResource;
+import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gwtorm.server.OrmException;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Singleton
+public class ListChangeMessages implements RestReadView<ChangeResource> {
+  private final Provider<ReviewDb> dbProvider;
+  private final ChangeMessagesUtil changeMessagesUtil;
+  private final AccountLoader accountLoader;
+
+  @Inject
+  public ListChangeMessages(
+      Provider<ReviewDb> dbProvider,
+      ChangeMessagesUtil changeMessagesUtil,
+      AccountLoader.Factory accountLoaderFactory) {
+    this.dbProvider = dbProvider;
+    this.changeMessagesUtil = changeMessagesUtil;
+    this.accountLoader = accountLoaderFactory.create(true);
+  }
+
+  @Override
+  public List<ChangeMessageInfo> apply(ChangeResource resource)
+      throws OrmException, PermissionBackendException {
+    List<ChangeMessage> messages =
+        changeMessagesUtil.byChange(dbProvider.get(), resource.getNotes());
+    List<ChangeMessageInfo> messageInfos =
+        messages.stream()
+            .map(m -> createChangeMessageInfo(m, accountLoader))
+            .collect(Collectors.toList());
+    accountLoader.fill();
+    return messageInfos;
+  }
+}