| // 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.query.change; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.server.query.Predicate; |
| |
| import java.util.List; |
| |
| /** Results of a query over changes. */ |
| @AutoValue |
| public abstract class QueryResult { |
| static QueryResult create(@Nullable String query, |
| Predicate<ChangeData> predicate, int limit, List<ChangeData> changes) { |
| boolean moreChanges; |
| if (changes.size() > limit) { |
| moreChanges = true; |
| changes = changes.subList(0, limit); |
| } else { |
| moreChanges = false; |
| } |
| return new AutoValue_QueryResult(query, predicate, changes, moreChanges); |
| } |
| |
| /** |
| * @return the original query string, or null if the query was created |
| * programmatically. |
| */ |
| @Nullable public abstract String query(); |
| |
| /** |
| * @return the predicate after all rewriting and other modification by the |
| * query subsystem. |
| */ |
| public abstract Predicate<ChangeData> predicate(); |
| |
| /** @return the query results. */ |
| public abstract List<ChangeData> changes(); |
| |
| /** |
| * @return whether the query could be retried with |
| * {@link QueryProcessor#setStart(int)} to produce more results. Never |
| * true if {@link #changes()} is empty. |
| */ |
| public abstract boolean moreChanges(); |
| } |