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// Copyright (C) 2012 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.change;
import com.google.common.collect.ImmutableList;
import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestCollection;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.extensions.restapi.TopLevelResource;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.project.ChangeControl;
import com.google.gerrit.server.project.NoSuchChangeException;
import com.google.gerrit.server.query.change.QueryChanges;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.io.UnsupportedEncodingException;
import java.util.Collections;
import java.util.List;
public class ChangesCollection implements
RestCollection<TopLevelResource, ChangeResource> {
private final Provider<ReviewDb> db;
private final ChangeControl.Factory changeControlFactory;
private final Provider<QueryChanges> queryFactory;
private final DynamicMap<RestView<ChangeResource>> views;
@Inject
ChangesCollection(
Provider<ReviewDb> dbProvider,
ChangeControl.Factory changeControlFactory,
Provider<QueryChanges> queryFactory,
DynamicMap<RestView<ChangeResource>> views) {
this.db = dbProvider;
this.changeControlFactory = changeControlFactory;
this.queryFactory = queryFactory;
this.views = views;
}
@Override
public RestView<TopLevelResource> list() {
return queryFactory.get();
}
@Override
public DynamicMap<RestView<ChangeResource>> views() {
return views;
}
@Override
public ChangeResource parse(TopLevelResource root, IdString id)
throws ResourceNotFoundException, OrmException,
UnsupportedEncodingException {
List<Change> changes = findChanges(id.encoded());
if (changes.size() != 1) {
throw new ResourceNotFoundException(id);
}
ChangeControl control;
try {
control = changeControlFactory.validateFor(changes.get(0));
} catch (NoSuchChangeException e) {
throw new ResourceNotFoundException(id);
}
return new ChangeResource(control);
}
private List<Change> findChanges(String id)
throws OrmException, ResourceNotFoundException {
// Try legacy id
if (id.matches("^[1-9][0-9]*$")) {
Change c = db.get().changes().get(Change.Id.parse(id));
if (c != null) {
return ImmutableList.of(c);
}
return Collections.emptyList();
}
// Try isolated changeId
if (!id.contains("~")) {
Change.Key key = new Change.Key(id);
if (key.get().length() == 41) {
return db.get().changes().byKey(key).toList();
} else {
return db.get().changes().byKeyRange(key, key.max()).toList();
}
}
// Try change triplet
ChangeTriplet triplet;
try {
triplet = new ChangeTriplet(id);
} catch (ChangeTriplet.ParseException e) {
throw new ResourceNotFoundException(id);
}
return db.get().changes().byBranchKey(
triplet.getBranchNameKey(),
triplet.getChangeKey()).toList();
}
}
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