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17 package net.sf.plausj.bank.german.strategy;
18
19 import net.sf.plausj.bank.german.AccountCode;
20 import net.sf.plausj.bank.german.BankCode;
21 import net.sf.plausj.bank.german.CheckDigit;
22 import net.sf.plausj.bank.german.util.MathHelper;
23
24 /**
25 * @author ninan
26 *
27 */
28 public class Strategy61 implements Strategy {
29
30 private static final int[] multiplicatorsPartly = new int[] { 2, 1, 2, 1,
31 2, 1, 2, 0, 0, 0 };
32
33 private static final int[] multiplicatorsFull = new int[] { 2, 1, 2, 1, 2,
34 1, 2, 0, 1, 2 };
35
36 /**
37 * @see net.sf.plausj.bank.german.strategy.Strategy#calculateCheckDigit(net.sf.plausj.bank.german.BankCode,
38 * net.sf.plausj.bank.german.AccountCode)
39 */
40 public CheckDigit calculateCheckDigit(final BankCode bankCode,
41 final AccountCode accountCode) {
42 int[] multiplicators = null;
43
44 if (8 == accountCode.getDigitAtPos(8)) {
45 multiplicators = multiplicatorsFull;
46 } else {
47 multiplicators = multiplicatorsPartly;
48 }
49
50 int sum = 0;
51 for (int i = 0; i < AccountCode.ACCOUNT_CODE_MAX_LENGTH; ++i) {
52 int d = accountCode.getDigitAtPos(i);
53 int m = multiplicators[i];
54 sum += MathHelper.calcCrossTotal(d * m);
55 }
56
57 int cd = 10 - MathHelper.getLastDigits(sum, 1);
58
59 return new CheckDigit(7, cd);
60 }
61
62 }