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String url serializer

This commit is contained in:
Andrea Cavalli 2021-11-12 02:05:18 +01:00
parent 26b833310d
commit e0f9c720da
4 changed files with 85 additions and 3 deletions
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6
src/main/java/org/warp/filesponge/DiskCache.java
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@ -97,8 +97,10 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
.then();
}
private Send<Buffer> serializeUrl(URL url) {
var urlSerializer = url.getSerializer();
private <T extends URL> Send<Buffer> serializeUrl(T url) {
@SuppressWarnings("unchecked")
URLSerializer<T> urlSerializer = (URLSerializer<T>) url.getSerializer();
int sizeHint = urlSerializer.getSerializedSizeHint();
if (sizeHint == -1) sizeHint = 64;
try (var buffer = db.getAllocator().allocate(sizeHint)) {

2
src/main/java/org/warp/filesponge/URL.java
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@ -23,7 +23,7 @@ import it.cavallium.dbengine.database.serialization.Serializer;
public interface URL {
Serializer<URL> getSerializer();
URLSerializer<? extends URL> getSerializer();
/**
* @return String representation of this URL

39
src/main/java/org/warp/filesponge/URLSerializer.java Normal file
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@ -0,0 +1,39 @@
/*
* FileSponge
* Copyright (C) 2021 Andrea Cavalli
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package org.warp.filesponge;
import io.net5.buffer.api.Buffer;
import io.net5.buffer.api.BufferAllocator;
import it.cavallium.dbengine.database.serialization.BufferDataOutput;
import it.cavallium.dbengine.database.serialization.SerializationException;
import java.nio.charset.StandardCharsets;
import org.jetbrains.annotations.NotNull;
public interface URLSerializer<T extends URL> {
/**
* @param output its writable size will be at least equal to the size hint
*/
void serialize(@NotNull T url, Buffer output) throws SerializationException;
/**
* @return hint about the expected size of the buffer
*/
int getSerializedSizeHint();
}

41
src/main/java/org/warp/filesponge/URLStringSerializer.java Normal file
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@ -0,0 +1,41 @@
/*
* FileSponge
* Copyright (C) 2021 Andrea Cavalli
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package org.warp.filesponge;
import io.net5.buffer.api.Buffer;
import it.cavallium.dbengine.database.serialization.BufferDataOutput;
import it.cavallium.dbengine.database.serialization.SerializationException;
import org.jetbrains.annotations.NotNull;
public abstract class URLStringSerializer<T extends URL> implements URLSerializer<T> {
@Override
public final void serialize(@NotNull T url, Buffer output) throws SerializationException {
var string = this.serialize(url);
var dataOut = new BufferDataOutput(output);
dataOut.writeUTF(string);
}
public abstract @NotNull String serialize(@NotNull T url);
@Override
public int getSerializedSizeHint() {
return 64;
}
}