FinancialUtils.java

/**
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.apache.aries.samples.ariestrader.util;

import java.math.BigDecimal;

public class FinancialUtils {
    //TODO -- FinancialUtils should have parts reimplemented as JSPTaglibs 

    public final static int ROUND = BigDecimal.ROUND_HALF_UP;
    public final static int SCALE = 2;  
    public final static BigDecimal ZERO = (new BigDecimal(0.00)).setScale(SCALE);
    public final static BigDecimal ONE = (new BigDecimal(1.00)).setScale(SCALE);
    public final static BigDecimal HUNDRED = (new BigDecimal(100.00)).setScale(SCALE);

    public static BigDecimal computeGain(BigDecimal currentBalance,
                                         BigDecimal openBalance) 
    {
        return currentBalance.subtract(openBalance).setScale(SCALE);
    }

    public static BigDecimal computeGainPercent(BigDecimal currentBalance,
                                                BigDecimal openBalance) 
    {
        if (openBalance.doubleValue() == 0.0) return ZERO;
        BigDecimal gainPercent =
        currentBalance.divide(openBalance, ROUND).subtract(ONE).multiply(HUNDRED);
        return gainPercent;
    }

    public static String printGainHTML(BigDecimal gain) {
        String htmlString, arrow;
        if (gain.doubleValue() < 0.0) {
            htmlString = "<FONT color=\"#ff0000\">";
            arrow = "arrowdown.gif";
        }
        else {
            htmlString = "<FONT color=\"#009900\">";
            arrow = "arrowup.gif";          
        }

        htmlString += gain.setScale(SCALE, ROUND) + "</FONT><IMG src=\"images/" + arrow + "\" width=\"10\" height=\"10\" border=\"0\"></IMG>";
        return htmlString;
    }

    public static String printChangeHTML(double change) {
        String htmlString, arrow;
        if (change < 0.0) {
            htmlString = "<FONT color=\"#ff0000\">";
            arrow = "arrowdown.gif";                        
        }
        else {
            htmlString = "<FONT color=\"#009900\">";
            arrow = "arrowup.gif";                      
        }


        htmlString += change + "</FONT><IMG src=\"images/" + arrow + "\" width=\"10\" height=\"10\" border=\"0\"></IMG>";
        return htmlString;
    }

    public static String printGainPercentHTML(BigDecimal gain) {
        String htmlString, arrow;
        if (gain.doubleValue() < 0.0) {
            htmlString = "(<B><FONT color=\"#ff0000\">";
            arrow = "arrowdown.gif";                                    
        }
        else {
            htmlString = "(<B><FONT color=\"#009900\">+";
            arrow = "arrowup.gif";                                  
        }

        htmlString += gain.setScale(SCALE, ROUND);
        htmlString += "%</FONT></B>)<IMG src=\"images/" + arrow + "\" width=\"10\" height=\"10\" border=\"0\"></IMG>";
        return htmlString;
    }

    public static String printQuoteLink(String symbol)  
    {
        return "<A href=\"app?action=quotes&symbols="+ symbol+"\">" + symbol + "</A>";
    }


}