1 files changed, 179 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/query/group/GroupQueryBuilder.java b/java/com/google/gerrit/server/query/group/GroupQueryBuilder.java
new file mode 100644
index 0000000000..296dc17d05
--- /dev/null
+++ b/java/com/google/gerrit/server/query/group/GroupQueryBuilder.java
@@ -0,0 +1,179 @@
+// Copyright (C) 2017 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.group;
+
+import static com.google.common.collect.ImmutableList.toImmutableList;
+
+import com.google.common.base.Strings;
+import com.google.common.collect.Lists;
+import com.google.common.primitives.Ints;
+import com.google.gerrit.common.data.GroupReference;
+import com.google.gerrit.index.query.LimitPredicate;
+import com.google.gerrit.index.query.Predicate;
+import com.google.gerrit.index.query.QueryBuilder;
+import com.google.gerrit.index.query.QueryParseException;
+import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.server.account.AccountResolver;
+import com.google.gerrit.server.account.GroupBackend;
+import com.google.gerrit.server.account.GroupBackends;
+import com.google.gerrit.server.account.GroupCache;
+import com.google.gerrit.server.group.InternalGroup;
+import com.google.gwtorm.server.OrmException;
+import com.google.inject.Inject;
+import java.io.IOException;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+
+/** Parses a query string meant to be applied to group objects. */
+public class GroupQueryBuilder extends QueryBuilder<InternalGroup> {
+  public static final String FIELD_UUID = "uuid";
+  public static final String FIELD_DESCRIPTION = "description";
+  public static final String FIELD_INNAME = "inname";
+  public static final String FIELD_NAME = "name";
+  public static final String FIELD_OWNER = "owner";
+  public static final String FIELD_LIMIT = "limit";
+
+  private static final QueryBuilder.Definition<InternalGroup, GroupQueryBuilder> mydef =
+      new QueryBuilder.Definition<>(GroupQueryBuilder.class);
+
+  public static class Arguments {
+    final GroupCache groupCache;
+    final GroupBackend groupBackend;
+    final AccountResolver accountResolver;
+
+    @Inject
+    Arguments(GroupCache groupCache, GroupBackend groupBackend, AccountResolver accountResolver) {
+      this.groupCache = groupCache;
+      this.groupBackend = groupBackend;
+      this.accountResolver = accountResolver;
+    }
+  }
+
+  private final Arguments args;
+
+  @Inject
+  GroupQueryBuilder(Arguments args) {
+    super(mydef);
+    this.args = args;
+  }
+
+  @Operator
+  public Predicate<InternalGroup> uuid(String uuid) {
+    return GroupPredicates.uuid(new AccountGroup.UUID(uuid));
+  }
+
+  @Operator
+  public Predicate<InternalGroup> description(String description) throws QueryParseException {
+    if (Strings.isNullOrEmpty(description)) {
+      throw error("description operator requires a value");
+    }
+
+    return GroupPredicates.description(description);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> inname(String namePart) {
+    if (namePart.isEmpty()) {
+      return name(namePart);
+    }
+    return GroupPredicates.inname(namePart);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> name(String name) {
+    return GroupPredicates.name(name);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> owner(String owner) throws QueryParseException {
+    AccountGroup.UUID groupUuid = parseGroup(owner);
+    return GroupPredicates.owner(groupUuid);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> is(String value) throws QueryParseException {
+    if ("visibletoall".equalsIgnoreCase(value)) {
+      return GroupPredicates.isVisibleToAll();
+    }
+    throw error("Invalid query");
+  }
+
+  @Override
+  protected Predicate<InternalGroup> defaultField(String query) throws QueryParseException {
+    // Adapt the capacity of this list when adding more default predicates.
+    List<Predicate<InternalGroup>> preds = Lists.newArrayListWithCapacity(5);
+    preds.add(uuid(query));
+    preds.add(name(query));
+    preds.add(inname(query));
+    if (!Strings.isNullOrEmpty(query)) {
+      preds.add(description(query));
+    }
+    try {
+      preds.add(owner(query));
+    } catch (QueryParseException e) {
+      // Skip.
+    }
+    return Predicate.or(preds);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> member(String query)
+      throws QueryParseException, OrmException, ConfigInvalidException, IOException {
+    Set<Account.Id> accounts = parseAccount(query);
+    List<Predicate<InternalGroup>> predicates =
+        accounts.stream().map(GroupPredicates::member).collect(toImmutableList());
+    return Predicate.or(predicates);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> subgroup(String query) throws QueryParseException {
+    AccountGroup.UUID groupUuid = parseGroup(query);
+    return GroupPredicates.subgroup(groupUuid);
+  }
+
+  @Operator
+  public Predicate<InternalGroup> limit(String query) throws QueryParseException {
+    Integer limit = Ints.tryParse(query);
+    if (limit == null) {
+      throw error("Invalid limit: " + query);
+    }
+    return new LimitPredicate<>(FIELD_LIMIT, limit);
+  }
+
+  private Set<Account.Id> parseAccount(String nameOrEmail)
+      throws QueryParseException, OrmException, IOException, ConfigInvalidException {
+    Set<Account.Id> foundAccounts = args.accountResolver.findAll(nameOrEmail);
+    if (foundAccounts.isEmpty()) {
+      throw error("User " + nameOrEmail + " not found");
+    }
+    return foundAccounts;
+  }
+
+  private AccountGroup.UUID parseGroup(String groupNameOrUuid) throws QueryParseException {
+    Optional<InternalGroup> group = args.groupCache.get(new AccountGroup.UUID(groupNameOrUuid));
+    if (group.isPresent()) {
+      return group.get().getGroupUUID();
+    }
+    GroupReference groupReference =
+        GroupBackends.findBestSuggestion(args.groupBackend, groupNameOrUuid);
+    if (groupReference == null) {
+      throw error("Group " + groupNameOrUuid + " not found");
+    }
+    return groupReference.getUUID();
+  }
+}