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Jackson module for the VTL model

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package fr.insee.vtl.jackson;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
import fr.insee.vtl.model.Dataset;

import java.io.IOException;

/**
 * DatasetSerializer is a JSON serializer specialized for datasets.
 */
public class DatasetSerializer extends StdSerializer {

    /**
     * Base constructor.
     */
    protected DatasetSerializer() {
        super(Dataset.class);
    }

    /**
     * Serializes a Dataset object in JSON.
     *
     * @param value    The dataset component to serialize.
     * @param gen      The base JSON generator.
     * @param provider The serialization provider.
     * @throws IOException In case of problem while creating the JSON dataset.
     */
    @Override
    public void serialize(Dataset value, JsonGenerator gen, SerializerProvider provider) throws IOException {
        gen.writeStartObject();
        gen.writeObjectField("dataStructure", value.getDataStructure().values());
        gen.writeObjectField("dataPoints", value.getDataAsList());
        gen.writeEndObject();
    }
}