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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.data;

import java.io.IOException;
import java.util.List;

import com.xxdb.io.ExtendedDataInput;
import com.xxdb.io.ExtendedDataOutput;

/**
 * 
 * Corresponds to DolphinDB char vector
 *
 */

public class BasicByteVector extends AbstractVector{
	private byte[] values;
	
	public BasicByteVector(int size){
		this(DATA_FORM.DF_VECTOR, size);
	}
	
	public BasicByteVector(List list){
		super(DATA_FORM.DF_VECTOR);
		if (list != null) {
			values = new byte[list.size()];
			for (int i=0; i= 0)
			return value % buckets;
		else if(value == Byte.MIN_VALUE)
			return -1;
		else{
			return (int)((4294967296l + value) % buckets);
		}
	}
	
	@Override
	public boolean isNull(int index) {
		return values[index] == Byte.MIN_VALUE;
	}

	@Override
	public void setNull(int index) {
		values[index] = Byte.MIN_VALUE;
	}

	@Override
	public DATA_CATEGORY getDataCategory() {
		return Entity.DATA_CATEGORY.INTEGRAL;
	}

	@Override
	public DATA_TYPE getDataType() {
		return Entity.DATA_TYPE.DT_BYTE;
	}
	
	@Override
	public Class getElementClass(){
		return BasicByte.class;
	}

	@Override
	public int rows() {
		return values.length;
	}
	
	protected void writeVectorToOutputStream(ExtendedDataOutput out) throws IOException{
		out.write(values);
	}
}