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package com.hanzhigu.so.utils;

import java.lang.reflect.Array;
import java.math.BigDecimal;
import java.util.Collection;

import java.util.Map;

public class ValueUtils {
	
	public static BigDecimal getBigDecimal(BigDecimal num, int scale) {
		BigDecimal intNum = new BigDecimal(num.intValue());
		if(intNum.compareTo(num) == 0) {
			return intNum;
		}
		
		return num.setScale(scale,BigDecimal.ROUND_HALF_UP);
	}

	public static boolean isBoolean(Class classType) {
		if (classType == null) {
			return false;
		}
		return (Boolean.TYPE.equals(classType)) || (Boolean.class.equals(classType));
	}

	public static boolean isNotEmpty(Object value) {
		return !isEmpty(value);
	}

	public static boolean isEmpty(Object value) {
		if (value == null) {
			return true;
		}
		if ((value instanceof String)) {
			String text = (String) value;
			return (text.isEmpty()) || (text.trim().isEmpty());
		}
		if (value.getClass().isArray()) {
			return Array.getLength(value) == 0;
		}
		if ((value instanceof Collection)) {
			return ((Collection) value).isEmpty();
		}
		if ((value instanceof Map)) {
			return ((Map) value).isEmpty();
		}
		return false;
	}

	public static boolean isNumber(Class classType) {
		if (classType == null) {
			return false;
		}
		return (Number.class.isAssignableFrom(classType)) || (Double.TYPE.equals(classType))
				|| (Short.TYPE.equals(classType)) || (Integer.TYPE.equals(classType)) || (Float.TYPE.equals(classType));
	}

	public static boolean isZero(double value) {
		return (value == 0.0D) || (Math.abs(value) < 1.E-005D);
	}

}