ISO8583 String Message Builder

MessageBuilder.java

/*
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 * and open the template in the editor.
 */
package id.co.vsi.common.ISO8583;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.atomic.AtomicLong;

/**
 *
 * @author Jamal
 */
public class MessageBuilder
{
    public static final String GW_POSTPAID_INQUIRY_REQUEST = "2100403000410001000005??501??????????????????????????6014070280001019VI105V3????????????";
    
    public static final String GW_POSTPAID_PAYMENT_REQUEST_HEAD = "22005030004100010000";
    
    public static final String GW_PREPAID_INQUIRY_REQUEST = "210040300041000100000553502??????????????????????????6012070022295031VI105V3000000000000000000000000";
    
    public static final String GW_PREPAID_PAYMENT_REQUEST_HEAD = "2200503000410001000405535023600000000050000";
    
    public static final String GW_NONTAGLIS_INQUIRY_REQUEST = "2100403000410001000005??504??????????????????????????6012070022295023VI105V3?????????????000";
    
    public static final String GW_NONTAGLIS_PAYMENT_REQUEST_HEAD = "22005030004100010004";
    
    protected static AtomicLong cStan = new AtomicLong(100000000000L);
    protected static AtomicLong cSwitcherRefnum = new AtomicLong(1892362392400230049L);
    protected static final String cSwitcherRefnumPadding = "0000000000000";
    protected static final ThreadLocal<SimpleDateFormat> cDateFormatter = new ThreadLocal<SimpleDateFormat>(){
        @Override
        protected SimpleDateFormat initialValue()
        {
            return new SimpleDateFormat("yyyyMMddHHmmss");
        }
    };
    
    private static ThreadLocal<StringBuilder> cGWPostpaidInqReqBuilder = new ThreadLocal<StringBuilder>() 
    {
        @Override
        protected StringBuilder initialValue() {
            StringBuilder tGWPostpaidInqReqTemplate = new StringBuilder(89);
            tGWPostpaidInqReqTemplate.append(GW_POSTPAID_INQUIRY_REQUEST);
            tGWPostpaidInqReqTemplate.replace(39, 53, cDateFormatter.get().format(new Date()));
            return tGWPostpaidInqReqTemplate;
        }

        @Override
        public StringBuilder get() {
            StringBuilder b = super.get();
            return b;
        }

    };
    
    private static ThreadLocal<StringBuilder> cGWPrepaidInqReqBuilder = new ThreadLocal<StringBuilder>() 
    {
        @Override
        protected StringBuilder initialValue() {
            StringBuilder tGWPostpaidInqReqTemplate = new StringBuilder(89);
            tGWPostpaidInqReqTemplate.append(GW_PREPAID_INQUIRY_REQUEST);
            tGWPostpaidInqReqTemplate.replace(39, 53, cDateFormatter.get().format(new Date()));
            return tGWPostpaidInqReqTemplate;
        }

        @Override
        public StringBuilder get() {
            StringBuilder b = super.get();
            return b;
        }

    };
    
    private static ThreadLocal<StringBuilder> cGWNontaglisInqReqBuilder = new ThreadLocal<StringBuilder>() 
    {
        @Override
        protected StringBuilder initialValue() {
            StringBuilder tGWPostpaidInqReqTemplate = new StringBuilder(89);
            tGWPostpaidInqReqTemplate.append(GW_NONTAGLIS_INQUIRY_REQUEST);
            tGWPostpaidInqReqTemplate.replace(39, 53, cDateFormatter.get().format(new Date()));
            return tGWPostpaidInqReqTemplate;
        }

        @Override
        public StringBuilder get() {
            StringBuilder b = super.get();
            return b;
        }

    };
    
    private static ThreadLocal<StringBuilder> cEmptyMessageBuilder = new ThreadLocal<StringBuilder>() 
    {
        @Override
        protected StringBuilder initialValue() {
            return new StringBuilder();
        }

        @Override
        public StringBuilder get() {
            StringBuilder b = super.get();
            b.setLength(0);
            
            return b;
        }

    };
    
    public static String buildGWPostpaidInquryRequest(String pSubscriberId)
    {        
        StringBuilder tResult = cGWPostpaidInqReqBuilder.get();
        tResult.replace(22, 24, pSubscriberId.substring(0, 2));
        tResult.replace(27, 39, Long.toString(cStan.getAndIncrement()));
        tResult.replace(76, 88, pSubscriberId);
        
        return tResult.toString();
    }
    
    public static String buildGWPostpaidPaymentRequest(String pInquiryResponse)
    {
        StringBuilder tResult = cEmptyMessageBuilder.get();
        
        tResult.append(GW_POSTPAID_PAYMENT_REQUEST_HEAD);
        tResult.append(pInquiryResponse.substring(20, 82));
        int tPayReqBit48Length = pInquiryResponse.substring(89).length() + 33;
        tResult.append(tPayReqBit48Length);
        tResult.append(pInquiryResponse.substring(89, 109));
        int tBillStatus = Character.getNumericValue(pInquiryResponse.charAt(108));
        int tPaymentStatus = tBillStatus > 4? 4: tBillStatus;
        tResult.append(tPaymentStatus);
        tResult.append(pInquiryResponse.substring(109, 141));
        tResult.append(cSwitcherRefnum.getAndIncrement());
        tResult.append(cSwitcherRefnumPadding);
        tResult.append(pInquiryResponse.substring(141));
        
        return tResult.toString();
    }
    
    public static String buildGWPrepaidInquryRequest(String pSubscriberIdOrMSN)
    {        
        StringBuilder tResult = cGWPrepaidInqReqBuilder.get();
        tResult.replace(27, 39, Long.toString(cStan.getAndIncrement()));
        if(pSubscriberIdOrMSN.length() == 11)
        {
            tResult.replace(76, 87, pSubscriberIdOrMSN);
            tResult.replace(99, 100, "0");
        }
        else
        {
            tResult.replace(87, 99, pSubscriberIdOrMSN);
            tResult.replace(99, 100, "1");
        }        
        
        return tResult.toString();
    }
    
    public static String buildGWPrepaidPaymentRequest(String pInquiryResponse)
    {
        StringBuilder tResult = cEmptyMessageBuilder.get();
        
        tResult.append(GW_PREPAID_PAYMENT_REQUEST_HEAD);
        tResult.append(pInquiryResponse.substring(27, 66));
        int tPayReqBit48Length = Integer.parseInt(pInquiryResponse.substring(70, 73)) + 33;
        tResult.append(tPayReqBit48Length);
        tResult.append(pInquiryResponse.substring(73, 136));
        tResult.append(cSwitcherRefnum.getAndIncrement());
        tResult.append(cSwitcherRefnumPadding);
        tResult.append(pInquiryResponse.substring(136, 174));
        tResult.append('0');
        tResult.append(pInquiryResponse.substring(174));
        
        return tResult.toString();
    }
    
    public static String buildGWNontaglisInquryRequest(String pNoReg)
    {        
        StringBuilder tResult = cGWNontaglisInqReqBuilder.get();
        tResult.replace(22, 24, pNoReg.substring(0, 2));
        tResult.replace(27, 39, Long.toString(cStan.getAndIncrement()));
        tResult.replace(76, 89, pNoReg);
        
        return tResult.toString();
    }
    
    public static String buildGWNontaglisPaymentRequest(String pInquiryResponse)
    {
        StringBuilder tResult = cEmptyMessageBuilder.get();
        
        tResult.append(GW_NONTAGLIS_PAYMENT_REQUEST_HEAD);
        tResult.append(pInquiryResponse.substring(20, 82));
        int tPayReqBit48Length = Integer.parseInt(pInquiryResponse.substring(86, 89)) + 32;
        tResult.append(tPayReqBit48Length);
        tResult.append(pInquiryResponse.substring(89, 190));
        tResult.append(cSwitcherRefnum.getAndIncrement());
        tResult.append(cSwitcherRefnumPadding);
        tResult.append(pInquiryResponse.substring(190));
        
        return tResult.toString();
    }
    
    private static String padStart(String string, int minLength, char padChar)
    {
        if (string.length() >= minLength)
        {
            return string;
        }
        StringBuilder sb = new StringBuilder(minLength);
        for (int i = string.length(); i < minLength; i++)
        {
            sb.append(padChar);
        }
        sb.append(string);
        return sb.toString();
    }
    
    private static String padEnd(String string, int minLength, char padChar)
    {
        if (string.length() >= minLength)
        {
            return string;
        }
        StringBuilder sb = new StringBuilder(minLength);
        sb.append(string);
        for (int i = string.length(); i < minLength; i++)
        {
            sb.append(padChar);
        }
        return sb.toString();
    }
}