| // Copyright (C) 2016 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; |
| |
| import com.google.common.primitives.Ints; |
| import com.google.gerrit.reviewdb.client.Change; |
| import com.google.gerrit.server.change.ChangeTriplet; |
| import com.google.gerrit.server.project.ChangeControl; |
| import com.google.gerrit.server.project.NoSuchChangeException; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.query.change.InternalChangeQuery; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Optional; |
| |
| @Singleton |
| public class ChangeFinder { |
| private final Provider<InternalChangeQuery> queryProvider; |
| |
| @Inject |
| ChangeFinder(Provider<InternalChangeQuery> queryProvider) { |
| this.queryProvider = queryProvider; |
| } |
| |
| /** |
| * Find changes matching the given identifier. |
| * |
| * @param id change identifier, either a numeric ID, a Change-Id, or project~branch~id triplet. |
| * @param user user to wrap in controls. |
| * @return possibly-empty list of controls for all matching changes, corresponding to the given |
| * user; may or may not be visible. |
| * @throws OrmException if an error occurred querying the database. |
| */ |
| public List<ChangeControl> find(String id, CurrentUser user) throws OrmException { |
| // Use the index to search for changes, but don't return any stored fields, |
| // to force rereading in case the index is stale. |
| InternalChangeQuery query = queryProvider.get().noFields(); |
| |
| // Try legacy id |
| if (!id.isEmpty() && id.charAt(0) != '0') { |
| Integer n = Ints.tryParse(id); |
| if (n != null) { |
| return asChangeControls(query.byLegacyChangeId(new Change.Id(n)), user); |
| } |
| } |
| |
| // Try isolated changeId |
| if (!id.contains("~")) { |
| return asChangeControls(query.byKeyPrefix(id), user); |
| } |
| |
| // Try change triplet |
| Optional<ChangeTriplet> triplet = ChangeTriplet.parse(id); |
| if (triplet.isPresent()) { |
| return asChangeControls(query.byBranchKey(triplet.get().branch(), triplet.get().id()), user); |
| } |
| |
| return Collections.emptyList(); |
| } |
| |
| public ChangeControl findOne(Change.Id id, CurrentUser user) throws OrmException { |
| List<ChangeControl> ctls = find(id, user); |
| if (ctls.size() != 1) { |
| throw new NoSuchChangeException(id); |
| } |
| return ctls.get(0); |
| } |
| |
| public List<ChangeControl> find(Change.Id id, CurrentUser user) throws OrmException { |
| // Use the index to search for changes, but don't return any stored fields, |
| // to force rereading in case the index is stale. |
| InternalChangeQuery query = queryProvider.get().noFields(); |
| return asChangeControls(query.byLegacyChangeId(id), user); |
| } |
| |
| private List<ChangeControl> asChangeControls(List<ChangeData> cds, CurrentUser user) |
| throws OrmException { |
| List<ChangeControl> ctls = new ArrayList<>(cds.size()); |
| for (ChangeData cd : cds) { |
| ctls.add(cd.changeControl(user)); |
| } |
| return ctls; |
| } |
| } |