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The messaging and data conversion protocol between Java and DolphinDB server
package com.xxdb.data;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.time.LocalDate;
import java.util.List;
import com.xxdb.io.ExtendedDataInput;
/**
*
* Corresponds to DolphinDB date vector
*
*/
public class BasicDateVector extends BasicIntVector{
public BasicDateVector(int size) {
super(size);
}
public BasicDateVector(List list){
super(list);
}
public BasicDateVector(int[] array){
super(array);
}
protected BasicDateVector(int[] array, boolean copy){
super(array, copy);
}
protected BasicDateVector(DATA_FORM df, int size){
super(df,size);
}
protected BasicDateVector(DATA_FORM df, ExtendedDataInput in) throws IOException{
super(df, in);
}
@Override
public DATA_CATEGORY getDataCategory() {
return Entity.DATA_CATEGORY.TEMPORAL;
}
@Override
public DATA_TYPE getDataType() {
return Entity.DATA_TYPE.DT_DATE;
}
public Entity get(int index){
return new BasicDate(getInt(index));
}
public Vector getSubVector(int[] indices){
return new BasicDateVector(getSubArray(indices), false);
}
public LocalDate getDate(int index){
if(isNull(index))
return null;
else
return Utils.parseDate(getInt(index));
}
public void setDate(int index, LocalDate date){
setInt(index,Utils.countDays(date));
}
@Override
public Class> getElementClass(){
return BasicDate.class;
}
@Override
public Vector combine(Vector vector) {
BasicDateVector v = (BasicDateVector)vector;
int newSize = this.rows() + v.rows();
int[] newValue = new int[newSize];
System.arraycopy(this.values,0, newValue,0,this.rows());
System.arraycopy(v.values,0, newValue,this.rows(),v.rows());
return new BasicDateVector(newValue);
}
@Override
public ByteBuffer writeVectorToBuffer(ByteBuffer buffer) throws IOException {
int[] data = new int[size];
System.arraycopy(values, 0, data, 0, size);
for (int val: data) {
buffer.putInt(val);
}
return buffer;
}
@Override
public void Append(Scalar value) throws Exception{
add(value.getNumber().intValue());
}
@Override
public void Append(Vector value) throws Exception{
addRange(((BasicDateVector)value).getdataArray());
}
}