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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.
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*
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* The contents of this file are subject to the terms of the GNU General Public License Version 3
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* only ("GPL"). You may not use this file except in compliance with the License. You can obtain a
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* copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific
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* language governing permissions and limitations under the License.
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*
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* When distributing the software, include this License Header Notice in each file.
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*/
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package org.openconcerto.erp.core.sales.product.model;
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import java.math.BigDecimal;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.Date;
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import java.util.List;
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public class PriceByQty {
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private long qty;
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private BigDecimal price;
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private Date startDate;
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public PriceByQty(long qty, BigDecimal price, Date startDate) {
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this.qty = qty;
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this.price = price;
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this.startDate = startDate;
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}
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public static BigDecimal getPriceForQty(int qty, List<PriceByQty> list) {
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return getPriceForQty(qty, list, new Date(System.currentTimeMillis()));
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}
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public static BigDecimal getPriceForQty(int qty, List<PriceByQty> list, Date d) {
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BigDecimal result = null;
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Collections.sort(list, new Comparator<PriceByQty>() {
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@Override
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public int compare(PriceByQty o1, PriceByQty o2) {
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final int i = (int) (o1.qty - o2.qty);
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if (i != 0) {
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return i;
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}
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return o1.startDate.compareTo(o2.startDate);
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}
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});
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for (PriceByQty priceByQty : list) {
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if (priceByQty.qty > qty) {
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break;
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}
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if (result == null || priceByQty.startDate.before(d)) {
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result = priceByQty.price;
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}
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}
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return result;
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}
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public static void main(String[] args) {
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List<PriceByQty> l = new ArrayList<PriceByQty>();
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final long currentTimeMillis = System.currentTimeMillis();
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l.add(new PriceByQty(50, new BigDecimal(11), new Date(currentTimeMillis)));
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l.add(new PriceByQty(1, new BigDecimal(14), new Date(currentTimeMillis + 2000)));
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l.add(new PriceByQty(1, new BigDecimal(13), new Date(currentTimeMillis - 5000)));
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l.add(new PriceByQty(1, new BigDecimal(12), new Date(currentTimeMillis)));
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System.out.println(getPriceForQty(0, l));
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System.out.println(getPriceForQty(1, l));
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System.out.println(getPriceForQty(49, l));
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System.out.println(getPriceForQty(50, l));
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}
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}
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