/** @packageDocumentation
 * @module OrbitGT
 */
declare type int32 = number;
import { ABuffer } from "../buffer/ABuffer";
import { AList } from "../collection/AList";
import { ALong } from "../runtime/ALong";
import { FileContent } from "./FileContent";
import { FileRange } from "./FileRange";
import { FileStorage } from "./FileStorage";
/**
 * Class PageCachedFile defines a paged content cache of a single file.
 */
/** @internal */
export declare class PageCachedFile extends FileStorage {
    private _fileStorage;
    private _fileName;
    private _fileSize;
    private _pageSize;
    private _pageCount;
    private _contentCache;
    private _requestCount;
    private _requestSize;
    /**
     * Create a new cached file.
     * @param fileStorage the underlying file storage.
     * @param fileName the name of the file to cache.
     * @param fileSize the length of the file to cache.
     * @param pageSize the byte size of a cache page (common sizes are 32768, 65536, 131072 or 262144).
     * @param maxPageCount the maximum number of pages to cache (the oldest pages are purged when the cache is full).
     */
    constructor(fileStorage: FileStorage, fileName: string, fileSize: ALong, pageSize: int32, maxPageCount: int32);
    /**
     * FileStorage method.
     */
    close(): void;
    /**
     * FileStorage method.
     */
    getFileLength(fileName: string): Promise<ALong>;
    /**
     * FileStorage method.
     */
    readFileParts(fileName: string, ranges: AList<FileRange>): Promise<AList<FileContent>>;
    /**
     * FileStorage method.
     */
    readFilePart(fileName: string, offset: ALong, size: int32): Promise<ABuffer>;
    /**
     * FileStorage method.
     */
    printStatistics(clear: boolean): void;
}
export {};
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