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API for Gerrit Plugins

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// Copyright (C) 2020 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.comment;

import com.google.common.collect.ImmutableMap;
import com.google.gerrit.entities.CommentContext;

/**
 * Caches the context lines of comments (source file content surrounding and including the lines
 * where the comment was written)
 */
public interface CommentContextCache {

  /**
   * Returns the context lines for a single comment. Works for published and draft comments.
   *
   * @param key a key representing a subset of fields for a comment that serves as an identifier.
   * @return a {@link CommentContext} object containing all line numbers and text of the context.
   */
  CommentContext get(CommentContextKey key);

  /**
   * Returns the context lines for multiple comments - identified by their {@code keys}. Works for
   * published and draft comments.
   *
   * @param keys list of keys, where each key represents a single comment through its project,
   *     change ID, patchset, path and ID. The keys can belong to different projects and changes.
   * @return {@code Map} of {@code CommentContext} containing the context for all comments.
   */
  ImmutableMap getAll(Iterable keys);
}