org.broadleafcommerce.core.offer.service.discount.domain.PromotionRounding Maven / Gradle / Ivy
/*
* Copyright 2008-2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.broadleafcommerce.core.offer.service.discount.domain;
import java.math.RoundingMode;
/**
* Interface to centralize the promotion rounding functionality found in several of the Promotable classes.
* @author bpolster
*
*/
public interface PromotionRounding {
/**
* It is sometimes problematic to offer percentage-off offers with regards to rounding. For example,
* consider an item that costs 9.99 and has a 50% promotion. To be precise, the offer value is 4.995,
* but this may be a strange value to display to the user depending on the currency being used.
*/
boolean isRoundOfferValues();
/**
* Returns the rounding mode to use for rounding operations.
* @return
*/
RoundingMode getRoundingMode();
/**
* Returns the scale to use when rounding.
* @return
*/
int getRoundingScale();
}