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The messaging and data conversion protocol between Java and DolphinDB server

There is a newer version: 3.00.2.2

package com.xxdb.data;

import java.io.IOException;
import java.util.List;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.xxdb.io.ExtendedDataInput;
import com.xxdb.io.ExtendedDataOutput;

/**
 * 
 * Corresponds to DolphinDB char matrix
 *
 */

public class BasicByteMatrix extends AbstractMatrix{
	private byte[] values;
	
	public BasicByteMatrix(int rows, int columns){
		super(rows, columns);
		values = new byte[rows * columns];
	}
	
	public BasicByteMatrix(int rows, int columns, List listOfArrays) throws Exception {
		super(rows,columns);
		values = new byte[rows*columns];
		if (listOfArrays == null || listOfArrays.size() != columns)
			throw new Exception("input list of arrays does not have " + columns + " columns");
		for (int i=0; i getElementClass(){
		return BasicByte.class;
	}

	@Override
	protected void readMatrixFromInputStream(int rows, int columns,	ExtendedDataInput in)  throws IOException{
		int size = rows * columns;
		values =new byte[size];
		int off = 0;
		while (off < size) {
			int len = Math.min(BUF_SIZE, size - off);
			in.readFully(values, off, len);
			off += len;
		}
	}
	
	protected void writeVectorToOutputStream(ExtendedDataOutput out) throws IOException{
		for(byte value : values)
			out.writeByte(value);
	}

	@JsonIgnore
	@Override
	public int getScale() {
		return super.getScale();
	}
}