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package com.datastax.data.exploration.biz.datatable.column;

import com.datastax.data.exploration.biz.datatable.DataType;
import com.datastax.data.exploration.biz.datatable.column.math.MathStat;

import java.math.BigDecimal;

/**
 * 数值型属性列
 */
public class DecimalColumn extends NumberColumn {

    private MathStat stat = null;

    public DecimalColumn(String columnName) {
        super(columnName, DataType.DECIMAL);
    }

    @Override
    BigDecimal transferValue(String str) {
        try {
            return new BigDecimal(str);
        } catch (Exception e) {
            addError(ERROR_TYPE, str);
            return null;
        }
    }

    @Override
    void flush() {
        this.stat = null;
    }

    public MathStat getStat() {
        if (stat == null) {
            stat = new MathStat<>(getNotNullValues().toArray(new BigDecimal[0]));
        }
        return stat;
    }

}