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    • org.zodiac.netty.marshallers.JsonListMarshaller Maven / Gradle / Ivy

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    package org.zodiac.netty.marshallers;

import com.fasterxml.jackson.databind.ObjectMapper;

import org.zodiac.commons.util.serialize.JsonUtil;
import org.zodiac.sdk.toolkit.marshallers.Marshaller;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufInputStream;
import io.netty.buffer.ByteBufOutputStream;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;

final class JsonListMarshaller implements Marshaller, ByteBuf> {

    private final ObjectMapper mapper;

    JsonListMarshaller() {
        this(null);
    }

    JsonListMarshaller(ObjectMapper mapper) {
        this.mapper = mapper;
    }

    @Override
    @SuppressWarnings("unchecked")
    public List read(ByteBuf data, Object[] hints) throws IOException {
        try (final ByteBufInputStream in = new ByteBufInputStream(data)) {
            ;
            return null != mapper ? mapper.readValue((DataInput) in, List.class) :
                JsonUtil.readList((DataInput) in, Object.class);
        }
    }

    @Override
    public void write(List obj, ByteBuf into, Object[] hints) throws IOException {
        try (final ByteBufOutputStream out = new ByteBufOutputStream(into)) {
            if (null != mapper) {
                mapper.writeValue((DataOutput) out, obj);
            } else {
                JsonUtil.writeValue((DataOutput) out, obj);
            }
        }
    }

}
    
    
    
    

    




    
    
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