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de.javakaffee.kryoserializers.dexx.ListSerializer Maven / Gradle / Ivy
package de.javakaffee.kryoserializers.dexx;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.github.andrewoma.dexx.collection.IndexedLists;
import com.github.andrewoma.dexx.collection.List;
/**
* A kryo {@link Serializer} for dexx {@link List}
*/
public class ListSerializer extends Serializer {
private static final boolean DOES_NOT_ACCEPT_NULL = true;
private static final boolean IMMUTABLE = true;
public ListSerializer() {
super(DOES_NOT_ACCEPT_NULL, IMMUTABLE);
}
@Override
public void write(Kryo kryo, Output output, List object) {
output.writeInt(object.size(), true);
for (Object elm : object) {
kryo.writeClassAndObject(output, elm);
}
}
@Override
public List read(Kryo kryo, Input input, Class aClass) {
final int size = input.readInt(true);
final Object[] list = new Object[size];
for (int i = 0; i < size; ++i) {
list[i] = kryo.readClassAndObject(input);
}
return IndexedLists.copyOf(list);
}
/**
* Creates a new {@link ImmutableListSerializer} and registers its serializer
*
* @param kryo the {@link Kryo} instance to set the serializer on
*/
public static void registerSerializers(final Kryo kryo) {
final ListSerializer serializer = new ListSerializer();
kryo.register(List.class, serializer);
// Note:
// Only registering above is good enough for serializing/deserializing.
// but if using Kryo#copy, following is required.
kryo.register(IndexedLists.of().getClass(), serializer);
kryo.register(IndexedLists.of(1).getClass(), serializer);
kryo.register(IndexedLists.of(1,2).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6,7).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6,7,8).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6,7,8,9).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6,7,8,10).getClass(), serializer);
kryo.register(IndexedLists.of(1,2,3,4,5,6,7,8,10,11).getClass(), serializer);
}
}
