52 lines
1.7 KiB
Java
52 lines
1.7 KiB
Java
// Copyright (C) 2014 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.index.query;
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import com.google.auto.value.AutoValue;
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import com.google.gerrit.common.Nullable;
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import java.util.List;
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/** Results of a query over entities. */
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@AutoValue
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public abstract class QueryResult<T> {
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public static <T> QueryResult<T> create(
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@Nullable String query, Predicate<T> predicate, int limit, List<T> entites) {
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boolean more;
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if (entites.size() > limit) {
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more = true;
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entites = entites.subList(0, limit);
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} else {
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more = false;
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}
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return new AutoValue_QueryResult<>(query, predicate, entites, more);
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}
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/** @return the original query string, or null if the query was created programmatically. */
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@Nullable
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public abstract String query();
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/** @return the predicate after all rewriting and other modification by the query subsystem. */
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public abstract Predicate<T> predicate();
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/** @return the query results. */
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public abstract List<T> entities();
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/**
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* @return whether the query could be retried with a higher start/limit to produce more results.
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* Never true if {@link #entities()} is empty.
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*/
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public abstract boolean more();
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}
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