com.xxdb.data.BasicShortVector Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of api-java Show documentation

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.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.List;

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

/**
 * 
 * Corresponds to DolphinDB short vector
 *
 */

public class BasicShortVector extends AbstractVector{
	private short[] values;
	
	public BasicShortVector(int size){
		this(DATA_FORM.DF_VECTOR, size);
	}
	
	public BasicShortVector(List list){
		super(DATA_FORM.DF_VECTOR);
		if (list != null) {
			values = new short[list.size()];
			for (int i=0; i= 0)
			return value % buckets;
		else if(value == Short.MIN_VALUE)
			return -1;
		else{
			return (int)((4294967296l + value) % buckets);
		}
	}

	@Override
	public Vector combine(Vector vector) {
		BasicShortVector v = (BasicShortVector)vector;
		int newSize = this.rows() + v.rows();
		short[] newValue = new short[newSize];
		System.arraycopy(this.values,0, newValue,0,this.rows());
		System.arraycopy(v.values,0, newValue,this.rows(),v.rows());
		return new BasicShortVector(newValue);
	}

	@Override
	public boolean isNull(int index) {
		return values[index] == Short.MIN_VALUE;
	}

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

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

	@Override
	public DATA_TYPE getDataType() {
		return Entity.DATA_TYPE.DT_SHORT;
	}

	@Override
	public int rows() {
		return values.length;
	}
	
	@Override
	public Class getElementClass(){
		return BasicShort.class;
	}

	@Override
	protected void writeVectorToOutputStream(ExtendedDataOutput out) throws IOException {
		out.writeShortArray(values);
	}
}