Replace account.AccountInfo with extensions.common.AccountInfo

These have identical public fields; the only difference is that
AccountInfo.Loader was using the transient _id field store the ID
before filling in values. We can instead reuse the Integer _accountId
field for this purpose. This may incur an additional boxing or so per
account per request, but that cost should be negligible given how
many allocations we do per request already.

AccountInfoMapper is no longer required, so remove that entirely.

We are now enforcing that AccountInfos passed to the loader have an
_accountId. Since by default the old account.AccountInfo worked
without an _accountId, add this as a separate FillOption and clear it
if that option is not set. To verify this, check the owner fields in
ChangeIT#get.

Change-Id: Ied01750485cc728e91e585a31f3db8863bae7e40

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/change/ChangeIT.java

@@ -57,6 +57,12 @@ public class ChangeIT extends AbstractDaemonTest {
     assertThat(c.changeId).isEqualTo(r.getChangeId());
     assertThat(c.created).isEqualTo(c.updated);
     assertThat(c._number).is(1);
+
+    assertThat(c.owner.name).isEqualTo(admin.fullName);
+    assertThat(c.owner._accountId).isNull();
+    assertThat(c.owner.email).isNull();
+    assertThat(c.owner.username).isNull();
+    assertThat(c.owner.avatars).isNull();
   }
 
   @Test

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/account/AccountAssert.java

@@ -18,7 +18,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
 import com.google.gerrit.acceptance.TestAccount;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.extensions.common.AccountInfo;
 
 public class AccountAssert {
 

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/account/GetAccountIT.java

@@ -20,8 +20,8 @@ import static org.junit.Assert.assertEquals;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.acceptance.TestAccount;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.Url;
-import com.google.gerrit.server.account.AccountInfo;
 
 import org.apache.http.HttpStatus;
 import org.junit.Test;

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/group/AddRemoveGroupMembersIT.java

@@ -27,11 +27,11 @@ import com.google.common.collect.Sets;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.acceptance.TestAccount;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.AccountGroupById;
 import com.google.gerrit.reviewdb.client.AccountGroupMember;
-import com.google.gerrit.server.account.AccountInfo;
 import com.google.gerrit.server.group.AddIncludedGroups;
 import com.google.gerrit.server.group.AddMembers;
 import com.google.gerrit.server.group.CreateGroup;

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/group/ListGroupMembersIT.java

@@ -22,7 +22,7 @@ import com.google.common.collect.Collections2;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.common.Nullable;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.server.group.CreateGroup;
 import com.google.gson.reflect.TypeToken;
 

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/AccountInfo.java

@@ -14,9 +14,16 @@
 
 package com.google.gerrit.extensions.common;
 
+import java.util.List;
+
 public class AccountInfo {
   public Integer _accountId;
   public String name;
   public String email;
   public String username;
+  public List<AvatarInfo> avatars;
+
+  public AccountInfo(Integer id) {
+    this._accountId = id;
+  }
 }

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/ApprovalInfo.java

@@ -19,4 +19,8 @@ import java.sql.Timestamp;
 public class ApprovalInfo extends AccountInfo {
   public Integer value;
   public Timestamp date;
+
+  public ApprovalInfo(Integer id) {
+    super(id);
+  }
 }

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/common/AvatarInfo.java

@@ -12,26 +12,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server.api.accounts;
+package com.google.gerrit.extensions.common;
 
-import com.google.gerrit.extensions.common.AccountInfo;
+public class AvatarInfo {
+  /**
+   * Size in pixels the UI prefers an avatar image to be.
+   *
+   * The web UI prefers avatar images to be square, both
+   * the height and width of the image should be this size.
+   * The height is the more important dimension to match
+   * than the width.
+   */
+  public static final int DEFAULT_SIZE = 26;
 
-public class AccountInfoMapper {
-  public static AccountInfo fromAcountInfo(
-      com.google.gerrit.server.account.AccountInfo i) {
-    if (i == null) {
-      return null;
-    }
-    AccountInfo ai = new AccountInfo();
-    fromAccount(i, ai);
-    return ai;
-  }
-
-  public static void fromAccount(
-      com.google.gerrit.server.account.AccountInfo i, AccountInfo ai) {
-    ai._accountId = i._accountId;
-    ai.email = i.email;
-    ai.name = i.name;
-    ai.username = i.username;
-  }
+  public String url;
+  public Integer height;
+  public Integer width;
 }

gerrit-server/src/main/java/com/google/gerrit/server/account/AccountDirectory.java

@@ -14,6 +14,8 @@
 
 package com.google.gerrit.server.account;
 
+import com.google.gerrit.extensions.common.AccountInfo;
+
 import java.util.Set;
 
 /**
@@ -34,7 +36,10 @@ public abstract class AccountDirectory {
     AVATARS,
 
     /** Unique user identity to login to Gerrit, may be deprecated. */
-    USERNAME
+    USERNAME,
+
+    /** Numeric account ID, may be deprecated. */
+    ID;
   }
 
   public abstract void fillAccountInfo(

gerrit-server/src/main/java/com/google/gerrit/server/account/AccountInfo.java

@@ -1,130 +0,0 @@
-// Copyright (C) 2013 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.account;
-
-import com.google.common.base.Throwables;
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.server.account.AccountDirectory.DirectoryException;
-import com.google.gerrit.server.account.AccountDirectory.FillOptions;
-import com.google.gwtorm.server.OrmException;
-import com.google.inject.Inject;
-import com.google.inject.assistedinject.Assisted;
-
-import java.util.Collection;
-import java.util.Collections;
-import java.util.EnumSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-public class AccountInfo {
-  public static class Loader {
-    private static final Set<FillOptions> DETAILED_OPTIONS =
-        Collections.unmodifiableSet(EnumSet.of(
-            FillOptions.NAME,
-            FillOptions.EMAIL,
-            FillOptions.USERNAME,
-            FillOptions.AVATARS));
-
-    public interface Factory {
-      Loader create(boolean detailed);
-    }
-
-    private final InternalAccountDirectory directory;
-    private final boolean detailed;
-    private final Map<Account.Id, AccountInfo> created;
-    private final List<AccountInfo> provided;
-
-    @Inject
-    Loader(InternalAccountDirectory directory, @Assisted boolean detailed) {
-      this.directory = directory;
-      this.detailed = detailed;
-      created = Maps.newHashMap();
-      provided = Lists.newArrayList();
-    }
-
-    public AccountInfo get(Account.Id id) {
-      if (id == null) {
-        return null;
-      }
-      AccountInfo info = created.get(id);
-      if (info == null) {
-        info = new AccountInfo(id);
-        if (detailed) {
-          info._accountId = id.get();
-        }
-        created.put(id, info);
-      }
-      return info;
-    }
-
-    public void put(AccountInfo info) {
-      if (detailed) {
-        info._accountId = info._id.get();
-      }
-      provided.add(info);
-    }
-
-    public void fill() throws OrmException {
-      try {
-        directory.fillAccountInfo(
-            Iterables.concat(created.values(), provided),
-            detailed ? DETAILED_OPTIONS : EnumSet.of(FillOptions.NAME));
-      } catch (DirectoryException e) {
-        Throwables.propagateIfPossible(e.getCause(), OrmException.class);
-        throw new OrmException(e);
-      }
-    }
-
-    public void fill(Collection<? extends AccountInfo> infos)
-        throws OrmException {
-      for (AccountInfo info : infos) {
-        put(info);
-      }
-      fill();
-    }
-  }
-
-  public transient Account.Id _id;
-
-  public AccountInfo(Account.Id id) {
-    _id = id;
-  }
-
-  public Integer _accountId;
-  public String name;
-  public String email;
-  public String username;
-  public List<AvatarInfo> avatars;
-
-  public static class AvatarInfo {
-    /**
-     * Size in pixels the UI prefers an avatar image to be.
-     *
-     * The web UI prefers avatar images to be square, both
-     * the height and width of the image should be this size.
-     * The height is the more important dimension to match
-     * than the width.
-     */
-    public static final int DEFAULT_SIZE = 26;
-
-    public String url;
-    public Integer height;
-    public Integer width;
-  }
-}

gerrit-server/src/main/java/com/google/gerrit/server/account/AccountLoader.java

@@ -0,0 +1,99 @@
+// Copyright (C) 2014 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.account;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Throwables;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.gerrit.extensions.common.AccountInfo;
+import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.server.account.AccountDirectory.DirectoryException;
+import com.google.gerrit.server.account.AccountDirectory.FillOptions;
+import com.google.gwtorm.server.OrmException;
+import com.google.inject.Inject;
+import com.google.inject.assistedinject.Assisted;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+public class AccountLoader {
+  private static final Set<FillOptions> DETAILED_OPTIONS =
+      Collections.unmodifiableSet(EnumSet.of(
+          FillOptions.ID,
+          FillOptions.NAME,
+          FillOptions.EMAIL,
+          FillOptions.USERNAME,
+          FillOptions.AVATARS));
+
+  public interface Factory {
+    AccountLoader create(boolean detailed);
+  }
+
+  private final InternalAccountDirectory directory;
+  private final boolean detailed;
+  private final Map<Account.Id, AccountInfo> created;
+  private final List<AccountInfo> provided;
+
+  @Inject
+  AccountLoader(InternalAccountDirectory directory, @Assisted boolean detailed) {
+    this.directory = directory;
+    this.detailed = detailed;
+    created = Maps.newHashMap();
+    provided = Lists.newArrayList();
+  }
+
+  public AccountInfo get(Account.Id id) {
+    if (id == null) {
+      return null;
+    }
+    AccountInfo info = created.get(id);
+    if (info == null) {
+      info = new AccountInfo(id.get());
+      created.put(id, info);
+    }
+    return info;
+  }
+
+  public void put(AccountInfo info) {
+    checkArgument(info._accountId != null, "_accountId field required");
+    provided.add(info);
+  }
+
+  public void fill() throws OrmException {
+    try {
+      directory.fillAccountInfo(
+          Iterables.concat(created.values(), provided),
+          detailed ? DETAILED_OPTIONS : EnumSet.of(FillOptions.NAME));
+    } catch (DirectoryException e) {
+      Throwables.propagateIfPossible(e.getCause(), OrmException.class);
+      throw new OrmException(e);
+    }
+  }
+
+  public void fill(Collection<? extends AccountInfo> infos)
+      throws OrmException {
+    for (AccountInfo info : infos) {
+      put(info);
+    }
+    fill();
+  }
+}

gerrit-server/src/main/java/com/google/gerrit/server/account/CreateAccount.java

@@ -21,6 +21,7 @@ import com.google.gerrit.common.data.GlobalCapability;
 import com.google.gerrit.common.data.GroupDescriptions;
 import com.google.gerrit.common.errors.InvalidSshKeyException;
 import com.google.gerrit.extensions.annotations.RequiresCapability;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.DefaultInput;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
@@ -72,7 +73,7 @@ public class CreateAccount implements RestModifyView<TopLevelResource, Input> {
   private final SshKeyCache sshKeyCache;
   private final AccountCache accountCache;
   private final AccountByEmailCache byEmailCache;
-  private final AccountInfo.Loader.Factory infoLoader;
+  private final AccountLoader.Factory infoLoader;
   private final String username;
   private final AuditService auditService;
 
@@ -80,7 +81,7 @@ public class CreateAccount implements RestModifyView<TopLevelResource, Input> {
   CreateAccount(ReviewDb db, Provider<IdentifiedUser> currentUser,
       GroupsCollection groupsCollection, SshKeyCache sshKeyCache,
       AccountCache accountCache, AccountByEmailCache byEmailCache,
-      AccountInfo.Loader.Factory infoLoader,
+      AccountLoader.Factory infoLoader,
       @Assisted String username, AuditService auditService) {
     this.db = db;
     this.currentUser = currentUser;
@@ -180,7 +181,7 @@ public class CreateAccount implements RestModifyView<TopLevelResource, Input> {
     accountCache.evictByUsername(username);
     byEmailCache.evict(input.email);
 
-    AccountInfo.Loader loader = infoLoader.create(true);
+    AccountLoader loader = infoLoader.create(true);
     AccountInfo info = loader.get(id);
     loader.fill();
     return Response.created(info);

gerrit-server/src/main/java/com/google/gerrit/server/account/GetAccount.java

@@ -14,6 +14,7 @@
 
 package com.google.gerrit.server.account;
 
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
@@ -21,16 +22,16 @@ import com.google.inject.Singleton;
 
 @Singleton
 public class GetAccount implements RestReadView<AccountResource> {
-  private final AccountInfo.Loader.Factory infoFactory;
+  private final AccountLoader.Factory infoFactory;
 
   @Inject
-  GetAccount(AccountInfo.Loader.Factory infoFactory) {
+  GetAccount(AccountLoader.Factory infoFactory) {
     this.infoFactory = infoFactory;
   }
 
   @Override
   public AccountInfo apply(AccountResource rsrc) throws OrmException {
-    AccountInfo.Loader loader = infoFactory.create(true);
+    AccountLoader loader = infoFactory.create(true);
     AccountInfo info = loader.get(rsrc.getUser().getAccountId());
     loader.fill();
     return info;

gerrit-server/src/main/java/com/google/gerrit/server/account/InternalAccountDirectory.java

@@ -19,11 +19,12 @@ import com.google.common.base.Strings;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Multimap;
+import com.google.gerrit.extensions.common.AccountInfo;
+import com.google.gerrit.extensions.common.AvatarInfo;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.account.AccountInfo.AvatarInfo;
 import com.google.gerrit.server.avatar.AvatarProvider;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.AbstractModule;
@@ -65,11 +66,12 @@ public class InternalAccountDirectory extends AccountDirectory {
       throws DirectoryException {
     Multimap<Account.Id, AccountInfo> missing = ArrayListMultimap.create();
     for (AccountInfo info : in) {
-      AccountState state = accountCache.getIfPresent(info._id);
+      Account.Id id = new Account.Id(info._accountId);
+      AccountState state = accountCache.getIfPresent(id);
       if (state != null) {
         fill(info, state.getAccount(), options);
       } else {
-        missing.put(info._id, info);
+        missing.put(id, info);
       }
     }
     if (!missing.isEmpty()) {
@@ -88,6 +90,12 @@ public class InternalAccountDirectory extends AccountDirectory {
   private void fill(AccountInfo info,
       Account account,
       Set<FillOptions> options) {
+    if (options.contains(FillOptions.ID)) {
+      info._accountId = account.getId().get();
+    } else {
+      // Was previously set to look up account for filling.
+      info._accountId = null;
+    }
     if (options.contains(FillOptions.NAME)) {
       info.name = Strings.emptyToNull(account.getFullName());
       if (info.name == null) {

gerrit-server/src/main/java/com/google/gerrit/server/api/accounts/AccountApiImpl.java

@@ -15,10 +15,11 @@
 package com.google.gerrit.server.api.accounts;
 
 import com.google.gerrit.extensions.api.accounts.AccountApi;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.IdString;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.extensions.restapi.TopLevelResource;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.AccountResource;
 import com.google.gerrit.server.account.StarredChanges;
 import com.google.gerrit.server.change.ChangeResource;
@@ -34,12 +35,12 @@ public class AccountApiImpl extends AccountApi.NotImplemented implements Account
 
   private final AccountResource account;
   private final ChangesCollection changes;
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
   private final StarredChanges.Create starredChangesCreate;
   private final StarredChanges.Delete starredChangesDelete;
 
   @Inject
-  AccountApiImpl(AccountInfo.Loader.Factory ailf,
+  AccountApiImpl(AccountLoader.Factory ailf,
       ChangesCollection changes,
       StarredChanges.Create starredChangesCreate,
       StarredChanges.Delete starredChangesDelete,
@@ -54,11 +55,11 @@ public class AccountApiImpl extends AccountApi.NotImplemented implements Account
   @Override
   public com.google.gerrit.extensions.common.AccountInfo get()
       throws RestApiException {
-    AccountInfo.Loader accountLoader = accountLoaderFactory.create(true);
+    AccountLoader accountLoader = accountLoaderFactory.create(true);
     try {
       AccountInfo ai = accountLoader.get(account.getUser().getAccountId());
       accountLoader.fill();
-      return AccountInfoMapper.fromAcountInfo(ai);
+      return ai;
     } catch (OrmException e) {
       throw new RestApiException("Cannot parse change", e);
     }

gerrit-server/src/main/java/com/google/gerrit/server/api/changes/ChangeInfoMapper.java

@@ -18,16 +18,15 @@ import com.google.common.base.Function;
 import com.google.common.collect.EnumBiMap;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-import com.google.gerrit.extensions.common.ApprovalInfo;
 import com.google.gerrit.extensions.common.ChangeInfo;
 import com.google.gerrit.extensions.common.ChangeMessageInfo;
 import com.google.gerrit.extensions.common.ChangeStatus;
 import com.google.gerrit.extensions.common.LabelInfo;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Change.Status;
-import com.google.gerrit.server.api.accounts.AccountInfoMapper;
 import com.google.gerrit.server.change.ChangeJson;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
@@ -81,7 +80,7 @@ public class ChangeInfoMapper
     o.mergeable = i.mergeable;
     o.insertions = i.insertions;
     o.deletions = i.deletions;
-    o.owner = AccountInfoMapper.fromAcountInfo(i.owner);
+    o.owner = i.owner;
     o.currentRevision = i.currentRevision;
     o._number = i._number;
   }
@@ -95,7 +94,7 @@ public class ChangeInfoMapper
     for (ChangeJson.ChangeMessageInfo m : i.messages) {
       ChangeMessageInfo cmi = new ChangeMessageInfo();
       cmi.id = m.id;
-      cmi.author = AccountInfoMapper.fromAcountInfo(m.author);
+      cmi.author = m.author;
       cmi.date = m.date;
       cmi.message = m.message;
       cmi._revisionNumber = m._revisionNumber;
@@ -112,31 +111,20 @@ public class ChangeInfoMapper
     for (Map.Entry<String, ChangeJson.LabelInfo> e : i.labels.entrySet()) {
       ChangeJson.LabelInfo li = e.getValue();
       LabelInfo lo = new LabelInfo();
-      lo.approved = AccountInfoMapper.fromAcountInfo(li.approved);
-      lo.rejected = AccountInfoMapper.fromAcountInfo(li.rejected);
-      lo.recommended = AccountInfoMapper.fromAcountInfo(li.recommended);
-      lo.disliked = AccountInfoMapper.fromAcountInfo(li.disliked);
+      lo.approved = li.approved;
+      lo.rejected = li.rejected;
+      lo.recommended = li.recommended;
+      lo.disliked = li.disliked;
       lo.value = li.value;
       lo.defaultValue = li.defaultValue;
       lo.optional = li.optional;
       lo.blocking = li.blocking;
       lo.values = li.values;
       if (li.all != null) {
-        lo.all = Lists.newArrayListWithExpectedSize(li.all.size());
-        for (ChangeJson.ApprovalInfo ai : li.all) {
-          lo.all.add(fromApprovalInfo(ai));
-        }
+        lo.all = new ArrayList<>(li.all);
       }
       r.put(e.getKey(), lo);
     }
     o.labels = r;
   }
-
-  private static ApprovalInfo fromApprovalInfo(ChangeJson.ApprovalInfo ai) {
-    ApprovalInfo ao = new ApprovalInfo();
-    ao.value = ai.value;
-    ao.date = ai.date;
-    AccountInfoMapper.fromAccount(ai, ao);
-    return ao;
-  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java

@@ -51,7 +51,9 @@ import com.google.gerrit.common.data.LabelValue;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.PermissionRange;
 import com.google.gerrit.common.data.SubmitRecord;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.common.ActionInfo;
+import com.google.gerrit.extensions.common.ApprovalInfo;
 import com.google.gerrit.extensions.common.CommitInfo;
 import com.google.gerrit.extensions.common.FetchInfo;
 import com.google.gerrit.extensions.common.GitPerson;
@@ -81,7 +83,7 @@ import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PatchLineCommentsUtil;
 import com.google.gerrit.server.WebLinks;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.extensions.webui.UiActions;
 import com.google.gerrit.server.git.LabelNormalizer;
 import com.google.gerrit.server.notedb.ChangeNotes;
@@ -122,7 +124,7 @@ public class ChangeJson {
   private final ChangeData.Factory changeDataFactory;
   private final PatchSetInfoFactory patchSetInfoFactory;
   private final FileInfoJson fileInfoJson;
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
   private final DynamicMap<DownloadScheme> downloadSchemes;
   private final DynamicMap<DownloadCommand> downloadCommands;
   private final DynamicMap<RestView<ChangeResource>> changeViews;
@@ -132,7 +134,7 @@ public class ChangeJson {
   private final ChangeMessagesUtil cmUtil;
   private final PatchLineCommentsUtil plcUtil;
 
-  private AccountInfo.Loader accountLoader;
+  private AccountLoader accountLoader;
 
   @Inject
   ChangeJson(
@@ -144,7 +146,7 @@ public class ChangeJson {
       ChangeData.Factory cdf,
       PatchSetInfoFactory psi,
       FileInfoJson fileInfoJson,
-      AccountInfo.Loader.Factory ailf,
+      AccountLoader.Factory ailf,
       DynamicMap<DownloadScheme> downloadSchemes,
       DynamicMap<DownloadCommand> downloadCommands,
       DynamicMap<RestView<ChangeResource>> changeViews,
@@ -582,7 +584,7 @@ public class ChangeJson {
   }
 
   private ApprovalInfo approvalInfo(Account.Id id, Integer value, Timestamp date) {
-    ApprovalInfo ai = new ApprovalInfo(id);
+    ApprovalInfo ai = new ApprovalInfo(id.get());
     ai.value = value;
     ai.date = date;
     accountLoader.put(ai);
@@ -686,11 +688,11 @@ public class ChangeJson {
         continue;
       }
       for (ApprovalInfo ai : label.all) {
-        if (ctl.canRemoveReviewer(ai._id,
-            MoreObjects.firstNonNull(ai.value, 0))) {
-          removable.add(ai._id);
+        Account.Id id = new Account.Id(ai._accountId);
+        if (ctl.canRemoveReviewer(id, MoreObjects.firstNonNull(ai.value, 0))) {
+          removable.add(id);
         } else {
-          fixed.add(ai._id);
+          fixed.add(id);
         }
       }
     }
@@ -987,15 +989,6 @@ public class ChangeJson {
     }
   }
 
-  public static class ApprovalInfo extends AccountInfo {
-    public Integer value;
-    public Timestamp date;
-
-    ApprovalInfo(Account.Id id) {
-      super(id);
-    }
-  }
-
   public static class ChangeMessageInfo {
     public String id;
     public AccountInfo author;

gerrit-server/src/main/java/com/google/gerrit/server/change/Check.java

@@ -14,9 +14,9 @@
 
 package com.google.gerrit.server.change;
 
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.server.account.AccountInfo;
 import com.google.gerrit.server.change.ChangeJson.ChangeInfo;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
@@ -66,7 +66,7 @@ public class Check implements RestReadView<ChangeResource> {
     info.changeId = c.getKey().get();
     info.subject = c.getSubject();
     info.status = c.getStatus();
-    info.owner = new AccountInfo(c.getOwner());
+    info.owner = new AccountInfo(c.getOwner().get());
     info.created = c.getCreatedOn();
     info.updated = c.getLastUpdatedOn();
     info._number = c.getId().get();

gerrit-server/src/main/java/com/google/gerrit/server/change/CommentInfo.java

@@ -16,10 +16,11 @@ package com.google.gerrit.server.change;
 
 import com.google.common.base.Strings;
 import com.google.gerrit.common.changes.Side;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.Url;
 import com.google.gerrit.reviewdb.client.CommentRange;
 import com.google.gerrit.reviewdb.client.PatchLineComment;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 
 import java.sql.Timestamp;
 
@@ -34,7 +35,7 @@ public class CommentInfo {
   AccountInfo author;
   CommentRange range;
 
-  CommentInfo(PatchLineComment c, AccountInfo.Loader accountLoader) {
+  CommentInfo(PatchLineComment c, AccountLoader accountLoader) {
     id = Url.encode(c.getKey().get());
     path = c.getKey().getParentKey().getFileName();
     if (c.getSide() == 0) {

gerrit-server/src/main/java/com/google/gerrit/server/change/GetComment.java

@@ -15,7 +15,7 @@
 package com.google.gerrit.server.change;
 
 import com.google.gerrit.extensions.restapi.RestReadView;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
@@ -23,16 +23,16 @@ import com.google.inject.Singleton;
 @Singleton
 class GetComment implements RestReadView<CommentResource> {
 
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
 
   @Inject
-  GetComment(AccountInfo.Loader.Factory accountLoaderFactory) {
+  GetComment(AccountLoader.Factory accountLoaderFactory) {
     this.accountLoaderFactory = accountLoaderFactory;
   }
 
   @Override
   public CommentInfo apply(CommentResource rsrc) throws OrmException {
-    AccountInfo.Loader accountLoader = accountLoaderFactory.create(true);
+    AccountLoader accountLoader = accountLoaderFactory.create(true);
     CommentInfo ci = new CommentInfo(rsrc.getComment(), accountLoader);
     accountLoader.fill();
     return ci;

gerrit-server/src/main/java/com/google/gerrit/server/change/GetDraft.java

@@ -15,7 +15,7 @@
 package com.google.gerrit.server.change;
 
 import com.google.gerrit.extensions.restapi.RestReadView;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
@@ -23,16 +23,16 @@ import com.google.inject.Singleton;
 @Singleton
 class GetDraft implements RestReadView<DraftResource> {
 
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
 
   @Inject
-  GetDraft(AccountInfo.Loader.Factory accountLoaderFactory) {
+  GetDraft(AccountLoader.Factory accountLoaderFactory) {
     this.accountLoaderFactory = accountLoaderFactory;
   }
 
   @Override
   public CommentInfo apply(DraftResource rsrc) throws OrmException {
-    AccountInfo.Loader accountLoader = accountLoaderFactory.create(true);
+    AccountLoader accountLoader = accountLoaderFactory.create(true);
     CommentInfo ci = new CommentInfo(rsrc.getComment(), accountLoader);
     accountLoader.fill();
     return ci;

gerrit-server/src/main/java/com/google/gerrit/server/change/ListComments.java

@@ -17,7 +17,7 @@ package com.google.gerrit.server.change;
 import com.google.gerrit.reviewdb.client.PatchLineComment;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.PatchLineCommentsUtil;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
@@ -27,7 +27,7 @@ import com.google.inject.Singleton;
 @Singleton
 class ListComments extends ListDrafts {
   @Inject
-  ListComments(Provider<ReviewDb> db, AccountInfo.Loader.Factory alf,
+  ListComments(Provider<ReviewDb> db, AccountLoader.Factory alf,
       PatchLineCommentsUtil plcUtil) {
     super(db, alf, plcUtil);
   }

gerrit-server/src/main/java/com/google/gerrit/server/change/ListDrafts.java

@@ -23,7 +23,7 @@ import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.PatchLineComment;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.PatchLineCommentsUtil;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
@@ -38,10 +38,10 @@ import java.util.Map;
 class ListDrafts implements RestReadView<RevisionResource> {
   protected final Provider<ReviewDb> db;
   protected final PatchLineCommentsUtil plcUtil;
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
 
   @Inject
-  ListDrafts(Provider<ReviewDb> db, AccountInfo.Loader.Factory alf,
+  ListDrafts(Provider<ReviewDb> db, AccountLoader.Factory alf,
       PatchLineCommentsUtil plcUtil) {
     this.db = db;
     this.accountLoaderFactory = alf;
@@ -62,7 +62,7 @@ class ListDrafts implements RestReadView<RevisionResource> {
   public Map<String, List<CommentInfo>> apply(RevisionResource rsrc)
       throws OrmException {
     Map<String, List<CommentInfo>> out = Maps.newTreeMap();
-    AccountInfo.Loader accountLoader =
+    AccountLoader accountLoader =
         includeAuthorInfo() ? accountLoaderFactory.create(true) : null;
     for (PatchLineComment c : listComments(rsrc)) {
       CommentInfo o = new CommentInfo(c, accountLoader);

gerrit-server/src/main/java/com/google/gerrit/server/change/Module.java

@@ -24,7 +24,7 @@ import static com.google.gerrit.server.change.RevisionResource.REVISION_KIND;
 
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.restapi.RestApiModule;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.change.Reviewed.DeleteReviewed;
 import com.google.gerrit.server.change.Reviewed.PutReviewed;
 import com.google.gerrit.server.config.FactoryModule;
@@ -116,7 +116,7 @@ public class Module extends RestApiModule {
       @Override
       protected void configure() {
         factory(ReviewerResource.Factory.class);
-        factory(AccountInfo.Loader.Factory.class);
+        factory(AccountLoader.Factory.class);
         factory(EmailReviewComments.Factory.class);
         factory(ChangeInserter.Factory.class);
         factory(PatchSetInserter.Factory.class);

gerrit-server/src/main/java/com/google/gerrit/server/change/PostReviewers.java

@@ -39,9 +39,9 @@ import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.account.AccountCache;
-import com.google.gerrit.server.account.AccountInfo;
 import com.google.gerrit.server.account.AccountsCollection;
 import com.google.gerrit.server.account.GroupMembers;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.change.ReviewerJson.PostResult;
 import com.google.gerrit.server.change.ReviewerJson.ReviewerInfo;
 import com.google.gerrit.server.config.GerritServerConfig;
@@ -81,7 +81,7 @@ public class PostReviewers implements RestModifyView<ChangeResource, AddReviewer
   private final AddReviewerSender.Factory addReviewerSenderFactory;
   private final GroupsCollection groupsCollection;
   private final GroupMembers.Factory groupMembersFactory;
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
   private final Provider<ReviewDb> dbProvider;
   private final ChangeUpdate.Factory updateFactory;
   private final Provider<CurrentUser> currentUser;
@@ -99,7 +99,7 @@ public class PostReviewers implements RestModifyView<ChangeResource, AddReviewer
       AddReviewerSender.Factory addReviewerSenderFactory,
       GroupsCollection groupsCollection,
       GroupMembers.Factory groupMembersFactory,
-      AccountInfo.Loader.Factory accountLoaderFactory,
+      AccountLoader.Factory accountLoaderFactory,
       Provider<ReviewDb> db,
       ChangeUpdate.Factory updateFactory,
       Provider<CurrentUser> currentUser,

gerrit-server/src/main/java/com/google/gerrit/server/change/ReviewerJson.java

@@ -23,12 +23,13 @@ import com.google.gerrit.common.data.LabelTypes;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.PermissionRange;
 import com.google.gerrit.common.data.SubmitRecord;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.PatchSetApproval;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ApprovalsUtil;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.project.ChangeControl;
 import com.google.gerrit.server.project.SubmitRuleEvaluator;
 import com.google.gerrit.server.query.change.ChangeData;
@@ -47,13 +48,13 @@ public class ReviewerJson {
   private final Provider<ReviewDb> db;
   private final ChangeData.Factory changeDataFactory;
   private final ApprovalsUtil approvalsUtil;
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
 
   @Inject
   ReviewerJson(Provider<ReviewDb> db,
       ChangeData.Factory changeDataFactory,
       ApprovalsUtil approvalsUtil,
-      AccountInfo.Loader.Factory accountLoaderFactory) {
+      AccountLoader.Factory accountLoaderFactory) {
     this.db = db;
     this.changeDataFactory = changeDataFactory;
     this.approvalsUtil = approvalsUtil;
@@ -63,7 +64,7 @@ public class ReviewerJson {
   public List<ReviewerInfo> format(Collection<ReviewerResource> rsrcs)
       throws OrmException {
     List<ReviewerInfo> infos = Lists.newArrayListWithCapacity(rsrcs.size());
-    AccountInfo.Loader loader = accountLoaderFactory.create(true);
+    AccountLoader loader = accountLoaderFactory.create(true);
     for (ReviewerResource rsrc : rsrcs) {
       ReviewerInfo info = format(new ReviewerInfo(
           rsrc.getUser().getAccountId()),
@@ -82,7 +83,8 @@ public class ReviewerJson {
   public ReviewerInfo format(ReviewerInfo out, ChangeControl ctl) throws OrmException {
     PatchSet.Id psId = ctl.getChange().currentPatchSetId();
     return format(out, ctl,
-        approvalsUtil.byPatchSetUser(db.get(), ctl, psId, out._id));
+        approvalsUtil.byPatchSetUser(db.get(), ctl, psId,
+            new Account.Id(out._accountId)));
   }
 
   public ReviewerInfo format(ReviewerInfo out, ChangeControl ctl,
@@ -136,7 +138,7 @@ public class ReviewerJson {
     Map<String, String> approvals;
 
     protected ReviewerInfo(Account.Id id) {
-      super(id);
+      super(id.get());
     }
   }
 

gerrit-server/src/main/java/com/google/gerrit/server/change/SuggestReviewers.java

@@ -21,6 +21,7 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.gerrit.common.data.GroupReference;
 import com.google.gerrit.common.errors.NoSuchGroupException;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.extensions.restapi.Url;
@@ -32,7 +33,7 @@ import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.account.AccountCache;
 import com.google.gerrit.server.account.AccountControl;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.AccountVisibility;
 import com.google.gerrit.server.account.GroupBackend;
 import com.google.gerrit.server.account.GroupMembers;
@@ -60,7 +61,7 @@ public class SuggestReviewers implements RestReadView<ChangeResource> {
   private static final int DEFAULT_MAX_SUGGESTED = 10;
   private static final int DEFAULT_MAX_MATCHES = 100;
 
-  private final AccountInfo.Loader.Factory accountLoaderFactory;
+  private final AccountLoader.Factory accountLoaderFactory;
   private final AccountControl.Factory accountControlFactory;
   private final GroupMembers.Factory groupMembersFactory;
   private final AccountCache accountCache;
@@ -94,7 +95,7 @@ public class SuggestReviewers implements RestReadView<ChangeResource> {
 
   @Inject
   SuggestReviewers(AccountVisibility av,
-      AccountInfo.Loader.Factory accountLoaderFactory,
+      AccountLoader.Factory accountLoaderFactory,
       AccountControl.Factory accountControlFactory,
       AccountCache accountCache,
       GroupMembers.Factory groupMembersFactory,
@@ -216,13 +217,13 @@ public class SuggestReviewers implements RestReadView<ChangeResource> {
     LinkedHashMap<Account.Id, AccountInfo> r = Maps.newLinkedHashMap();
     for (Account p : dbProvider.get().accounts()
         .suggestByFullName(a, b, limit)) {
-      addSuggestion(r, p, new AccountInfo(p.getId()), visibilityControl);
+      addSuggestion(r, p, new AccountInfo(p.getId().get()), visibilityControl);
     }
 
     if (r.size() < limit) {
       for (Account p : dbProvider.get().accounts()
           .suggestByPreferredEmail(a, b, limit - r.size())) {
-        addSuggestion(r, p, new AccountInfo(p.getId()), visibilityControl);
+        addSuggestion(r, p, new AccountInfo(p.getId().get()), visibilityControl);
       }
     }
 
@@ -231,7 +232,7 @@ public class SuggestReviewers implements RestReadView<ChangeResource> {
           .suggestByEmailAddress(a, b, limit - r.size())) {
         if (!r.containsKey(e.getAccountId())) {
           Account p = accountCache.get(e.getAccountId()).getAccount();
-          AccountInfo info = new AccountInfo(p.getId());
+          AccountInfo info = new AccountInfo(p.getId().get());
           addSuggestion(r, p, info, visibilityControl);
         }
       }
@@ -260,14 +261,14 @@ public class SuggestReviewers implements RestReadView<ChangeResource> {
       }
     }
     for (Account a : fullNameMatches) {
-      addSuggestion(accountMap, a, new AccountInfo(a.getId()), visibilityControl);
+      addSuggestion(accountMap, a, new AccountInfo(a.getId().get()), visibilityControl);
       if (accountMap.size() >= limit) {
         break;
       }
     }
     if (accountMap.size() < limit) {
       for (Account a : emailMatches) {
-        addSuggestion(accountMap, a, new AccountInfo(a.getId()), visibilityControl);
+        addSuggestion(accountMap, a, new AccountInfo(a.getId().get()), visibilityControl);
         if (accountMap.size() >= limit) {
           break;
         }

gerrit-server/src/main/java/com/google/gerrit/server/change/TestSubmitRule.java

@@ -18,13 +18,14 @@ import com.google.common.base.MoreObjects;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.gerrit.common.data.SubmitRecord;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.DefaultInput;
 import com.google.gerrit.extensions.restapi.RestModifyView;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.rules.RulesCache;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.change.TestSubmitRule.Input;
 import com.google.gerrit.server.project.SubmitRuleEvaluator;
 import com.google.gerrit.server.query.change.ChangeData;
@@ -51,7 +52,7 @@ public class TestSubmitRule implements RestModifyView<RevisionResource, Input> {
   private final Provider<ReviewDb> db;
   private final ChangeData.Factory changeDataFactory;
   private final RulesCache rules;
-  private final AccountInfo.Loader.Factory accountInfoFactory;
+  private final AccountLoader.Factory accountInfoFactory;
 
   @Option(name = "--filters", usage = "impact of filters in parent projects")
   private Filters filters = Filters.RUN;
@@ -60,7 +61,7 @@ public class TestSubmitRule implements RestModifyView<RevisionResource, Input> {
   TestSubmitRule(Provider<ReviewDb> db,
       ChangeData.Factory changeDataFactory,
       RulesCache rules,
-      AccountInfo.Loader.Factory infoFactory) {
+      AccountLoader.Factory infoFactory) {
     this.db = db;
     this.changeDataFactory = changeDataFactory;
     this.rules = rules;
@@ -86,7 +87,7 @@ public class TestSubmitRule implements RestModifyView<RevisionResource, Input> {
           .setRule(input.rule)
           .canSubmit();
     List<Record> out = Lists.newArrayListWithCapacity(records.size());
-    AccountInfo.Loader accounts = accountInfoFactory.create(true);
+    AccountLoader accounts = accountInfoFactory.create(true);
     for (SubmitRecord r : records) {
       out.add(new Record(r, accounts));
     }
@@ -103,7 +104,7 @@ public class TestSubmitRule implements RestModifyView<RevisionResource, Input> {
     Map<String, AccountInfo> may;
     Map<String, None> impossible;
 
-    Record(SubmitRecord r, AccountInfo.Loader accounts) {
+    Record(SubmitRecord r, AccountLoader accounts) {
       this.status = r.status;
       this.errorMessage = r.errorMessage;
 

gerrit-server/src/main/java/com/google/gerrit/server/group/AddMembers.java

@@ -18,6 +18,7 @@ import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.gerrit.audit.AuditService;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.DefaultInput;
 import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
@@ -31,7 +32,7 @@ import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.account.AccountCache;
 import com.google.gerrit.server.account.AccountException;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.AccountManager;
 import com.google.gerrit.server.account.AccountResolver;
 import com.google.gerrit.server.account.AccountsCollection;
@@ -79,7 +80,7 @@ public class AddMembers implements RestModifyView<GroupResource, Input> {
   private final AccountsCollection accounts;
   private final AccountResolver accountResolver;
   private final AccountCache accountCache;
-  private final AccountInfo.Loader.Factory infoFactory;
+  private final AccountLoader.Factory infoFactory;
   private final Provider<ReviewDb> db;
   private final AuditService auditService;
 
@@ -89,7 +90,7 @@ public class AddMembers implements RestModifyView<GroupResource, Input> {
       AccountsCollection accounts,
       AccountResolver accountResolver,
       AccountCache accountCache,
-      AccountInfo.Loader.Factory infoFactory,
+      AccountLoader.Factory infoFactory,
       Provider<ReviewDb> db,
       AuditService auditService) {
     this.accountManager = accountManager;
@@ -116,7 +117,7 @@ public class AddMembers implements RestModifyView<GroupResource, Input> {
     Map<Account.Id, AccountGroupMember> newAccountGroupMembers = Maps.newHashMap();
     List<AccountInfo> result = Lists.newLinkedList();
     Account.Id me = ((IdentifiedUser) control.getCurrentUser()).getAccountId();
-    AccountInfo.Loader loader = infoFactory.create(true);
+    AccountLoader loader = infoFactory.create(true);
 
     for (String nameOrEmail : input.members) {
       Account a = findAccount(nameOrEmail);

gerrit-server/src/main/java/com/google/gerrit/server/group/GetMember.java

@@ -14,24 +14,25 @@
 
 package com.google.gerrit.server.group;
 
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.RestReadView;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
 @Singleton
 public class GetMember implements RestReadView<MemberResource> {
-  private final AccountInfo.Loader.Factory infoFactory;
+  private final AccountLoader.Factory infoFactory;
 
   @Inject
-  GetMember(AccountInfo.Loader.Factory infoFactory) {
+  GetMember(AccountLoader.Factory infoFactory) {
     this.infoFactory = infoFactory;
   }
 
   @Override
   public AccountInfo apply(MemberResource rsrc) throws OrmException {
-    AccountInfo.Loader loader = infoFactory.create(true);
+    AccountLoader loader = infoFactory.create(true);
     AccountInfo info = loader.get(rsrc.getMember().getAccountId());
     loader.fill();
     return info;

gerrit-server/src/main/java/com/google/gerrit/server/group/GroupJson.java

@@ -21,10 +21,10 @@ import com.google.common.base.Strings;
 import com.google.gerrit.common.data.GroupDescription;
 import com.google.gerrit.common.data.GroupDescriptions;
 import com.google.gerrit.common.groups.ListGroupsOption;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
 import com.google.gerrit.extensions.restapi.Url;
 import com.google.gerrit.reviewdb.client.AccountGroup;
-import com.google.gerrit.server.account.AccountInfo;
 import com.google.gerrit.server.account.GroupBackend;
 import com.google.gerrit.server.account.GroupControl;
 import com.google.gwtorm.server.OrmException;

gerrit-server/src/main/java/com/google/gerrit/server/group/ListMembers.java

@@ -20,13 +20,14 @@ import com.google.common.collect.Maps;
 import com.google.common.collect.Ordering;
 import com.google.gerrit.common.data.GroupDetail;
 import com.google.gerrit.common.errors.NoSuchGroupException;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.AccountGroupById;
 import com.google.gerrit.reviewdb.client.AccountGroupMember;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.GroupCache;
 import com.google.gerrit.server.account.GroupDetailFactory;
 import com.google.gwtorm.server.OrmException;
@@ -43,7 +44,7 @@ import java.util.Map;
 public class ListMembers implements RestReadView<GroupResource> {
   private final GroupCache groupCache;
   private final GroupDetailFactory.Factory groupDetailFactory;
-  private final AccountInfo.Loader accountLoader;
+  private final AccountLoader accountLoader;
 
   @Option(name = "--recursive", usage = "to resolve included groups recursively")
   private boolean recursive;
@@ -51,7 +52,7 @@ public class ListMembers implements RestReadView<GroupResource> {
   @Inject
   protected ListMembers(GroupCache groupCache,
       GroupDetailFactory.Factory groupDetailFactory,
-      AccountInfo.Loader.Factory accountLoaderFactory) {
+      AccountLoader.Factory accountLoaderFactory) {
     this.groupCache = groupCache;
     this.groupDetailFactory = groupDetailFactory;
     this.accountLoader = accountLoaderFactory.create(true);

gerrit-server/src/test/java/com/google/gerrit/server/change/CommentsTest.java

@@ -28,6 +28,7 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
 import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.common.changes.Side;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.restapi.IdString;
 import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
@@ -49,7 +50,7 @@ import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PatchLineCommentsUtil;
 import com.google.gerrit.server.account.AccountCache;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.CapabilityControl;
 import com.google.gerrit.server.account.GroupBackend;
 import com.google.gerrit.server.config.AllUsersNameProvider;
@@ -143,8 +144,8 @@ public class CommentsTest  {
     final TypeLiteral<DynamicMap<RestView<DraftResource>>> draftViewsType =
         new TypeLiteral<DynamicMap<RestView<DraftResource>>>() {};
 
-    final AccountInfo.Loader.Factory alf =
-        createMock(AccountInfo.Loader.Factory.class);
+    final AccountLoader.Factory alf =
+        createMock(AccountLoader.Factory.class);
     db = createMock(ReviewDb.class);
     final FakeAccountCache accountCache = new FakeAccountCache();
     final PersonIdent serverIdent = new PersonIdent(
@@ -168,7 +169,7 @@ public class CommentsTest  {
       protected void configure() {
         bind(commentViewsType).toInstance(commentViews);
         bind(draftViewsType).toInstance(draftViews);
-        bind(AccountInfo.Loader.Factory.class).toInstance(alf);
+        bind(AccountLoader.Factory.class).toInstance(alf);
         bind(ReviewDb.class).toInstance(db);
         bind(Config.class).annotatedWith(GerritServerConfig.class).toInstance(config);
         bind(ProjectCache.class).toProvider(Providers.<ProjectCache> of(null));
@@ -206,13 +207,13 @@ public class CommentsTest  {
     changeOwner = userFactory.create(ownerId);
     IdentifiedUser otherUser = userFactory.create(otherUserId);
 
-    AccountInfo.Loader accountLoader = createMock(AccountInfo.Loader.class);
+    AccountLoader accountLoader = createMock(AccountLoader.class);
     accountLoader.fill();
     expectLastCall().anyTimes();
     expect(accountLoader.get(ownerId))
-        .andReturn(new AccountInfo(ownerId)).anyTimes();
+        .andReturn(new AccountInfo(ownerId.get())).anyTimes();
     expect(accountLoader.get(otherUserId))
-        .andReturn(new AccountInfo(otherUserId)).anyTimes();
+        .andReturn(new AccountInfo(otherUserId.get())).anyTimes();
     expect(alf.create(true)).andReturn(accountLoader).anyTimes();
     replay(accountLoader, alf);
 
@@ -432,7 +433,7 @@ public class CommentsTest  {
     assertEquals(plc.getMessage(), ci.message);
     if (isPublished) {
       assertNotNull(ci.author);
-      assertEquals(plc.getAuthor(), ci.author._id);
+      assertEquals(plc.getAuthor(), new Account.Id(ci.author._accountId));
     }
     assertEquals(plc.getLine(), (int) ci.line);
     assertEquals(plc.getSide() == 0 ? Side.PARENT : Side.REVISION,

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ListMembersCommand.java

@@ -18,8 +18,9 @@ import static com.google.gerrit.sshd.CommandMetaData.Mode.MASTER_OR_SLAVE;
 
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Strings;
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.reviewdb.client.AccountGroup;
-import com.google.gerrit.server.account.AccountInfo;
+import com.google.gerrit.server.account.AccountLoader;
 import com.google.gerrit.server.account.GroupCache;
 import com.google.gerrit.server.account.GroupDetailFactory.Factory;
 import com.google.gerrit.server.group.ListMembers;
@@ -62,7 +63,7 @@ public class ListMembersCommand extends SshCommand {
     @Inject
     protected ListMembersCommandImpl(GroupCache groupCache,
         Factory groupDetailFactory,
-        AccountInfo.Loader.Factory accountLoaderFactory) {
+        AccountLoader.Factory accountLoaderFactory) {
       super(groupCache, groupDetailFactory, accountLoaderFactory);
       this.groupCache = groupCache;
     }
@@ -89,7 +90,7 @@ public class ListMembersCommand extends SshCommand {
           continue;
         }
 
-        formatter.addColumn(member._id.toString());
+        formatter.addColumn(Integer.toString(member._accountId));
         formatter.addColumn(MoreObjects.firstNonNull(
             member.username, "n/a"));
         formatter.addColumn(MoreObjects.firstNonNull(