decimalrange.java

数据库的加密以及密态查询

import java.sql.*;
import java.math.BigDecimal;

public class DecimalRange {
        private BigDecimal lowBound;
        private BigDecimal upBound;

        public DecimalRange(String str1, String str2) {
                lowBound = new BigDecimal(str1);
                upBound = new BigDecimal(str2);
        }

        public boolean contains(BigDecimal bd) {
                if (lowBound.compareTo(bd) <= 0 && upBound.compareTo(bd) > 0)
                        return true;

                return false;
        }

        /*public boolean contains(DecimalRange range) {
        	if (lowBound <= range.lowBound && upBound >= range.upBound)
        		return true;
        	return false;
        }

        public boolean lower(BigDecimal d) {
        	return d < lowBound;
        }

        public boolean lower(DecimalRange range) {
        }

        public boolean greater(BigDecimal d) {
        	return d >= upBound;
        }*/
}