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The messaging and data conversion protocol between Java and DolphinDB server

There is a newer version: 1.0.27

package com.xxdb.streaming.client;

import java.util.HashMap;

import com.xxdb.data.BasicAnyVector;
import com.xxdb.data.Entity;

public class BasicMessage implements IMessage {
    private long offset = 0;
    private String topic = "";
    private BasicAnyVector msg = null;
    private HashMap nameToIndex = null;

    public BasicMessage(long offset, String topic, BasicAnyVector msg, HashMap nameToIndex) {
        this.offset = offset;
        this.topic = topic;
        this.msg = msg;
        this.nameToIndex = nameToIndex;
    }

    @SuppressWarnings("unchecked")
    @Override
    public  T getValue(int colIndex) {
        return (T) this.msg.getEntity(colIndex);
    }

    @SuppressWarnings("unchecked")
    @Override
    public  T getValue(String colName) {
        int colIndex = nameToIndex.get(colName.toLowerCase());
        return (T) this.msg.getEntity(colIndex);
    }

    @Override
    public String getTopic() {
        return this.topic;
    }

    @Override
    public long getOffset() {
        return this.offset;
    }

    @Override
    public Entity getEntity(int colIndex) {
        return this.msg.getEntity(colIndex);
    }

}