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About how to build serializer by custom self-reference class about kryo HOT 4 CLOSED

szhsjsu commented on July 19, 2024

About how to build serializer by custom self-reference class

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Comments (4)

theigl commented on July 19, 2024

Hi @szhsjsu.

Do you need to write a custom serializer? Can't you simply use references?

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szhsjsu commented on July 19, 2024

Hi,

Thanks so much for the quick reply! Yeah, I think I need some serializers cause I have nodel/link/tree/graph classes that are referenced each other. I just created a new node serializer and it worked well.

Below is the code,

public class NodeSerializer extends Serializer<Node> {

@Override
public void write(Kryo kryo, Output output, Node node) {
    output.writeInt(node.id);
    kryo.writeClassAndObject(output, node.entryNode);
    kryo.writeClassAndObject(output, node.escapeNode);
    kryo.writeClassAndObject(output, node.skipNode);
    kryo.writeClassAndObject(output, node.charTrigger);
    kryo.writeClassAndObject(output, node.referenceTrigger);
    output.writeBoolean(node.isEnd);
}

@Override
public Node read(Kryo kryo, Input input, Class<? extends Node> type) {
    int id = input.readInt();
    Node node = new Node(id);
    node.entryNode = (Node) kryo.readClassAndObject(input);
    node.escapeNode = (Node) kryo.readClassAndObject(input);
    node.skipNode = (Node) kryo.readClassAndObject(input);
    node.charTrigger = (HashMap<Character, List<Node>>) kryo.readClassAndObject(input);
    node.referenceTrigger = (HashMap<Integer, List<Node>>) kryo.readClassAndObject(input);
    node.isEnd = input.readBoolean();
    return node;
} 

But I am not sure if this is a good solution for my problem? #