BlueMap/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/storage/sql/SQLMetaItemStorage.java

76 lines
2.8 KiB
Java

/*
* This file is part of BlueMap, licensed under the MIT License (MIT).
*
* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
* Copyright (c) contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package de.bluecolored.bluemap.core.storage.sql;
import de.bluecolored.bluemap.core.storage.compression.CompressedInputStream;
import de.bluecolored.bluemap.core.storage.compression.Compression;
import de.bluecolored.bluemap.core.storage.SingleItemStorage;
import de.bluecolored.bluemap.core.storage.sql.commandset.CommandSet;
import de.bluecolored.bluemap.core.util.stream.OnCloseOutputStream;
import lombok.RequiredArgsConstructor;
import org.jetbrains.annotations.Nullable;
import java.io.*;
@RequiredArgsConstructor
public class SQLMetaItemStorage implements SingleItemStorage {
private final CommandSet sql;
private final String mapId;
private final String itemName;
private final Compression compression;
@Override
public OutputStream write() throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
return new OnCloseOutputStream(compression.compress(bytes),
() -> sql.writeMapMeta(mapId, itemName, bytes.toByteArray())
);
}
@Override
public @Nullable CompressedInputStream read() throws IOException {
byte[] data = sql.readMapMeta(mapId, itemName);
if (data == null) return null;
return new CompressedInputStream(new ByteArrayInputStream(data), compression);
}
@Override
public void delete() throws IOException {
sql.deleteMapMeta(mapId, itemName);
}
@Override
public boolean exists() throws IOException {
return sql.hasMapMeta(mapId, itemName);
}
@Override
public boolean isClosed() {
return sql.isClosed();
}
}