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1   /*
2    * Copyright 2006 Christian Kalkhoff <me@ninan.info>
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
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.strategy.util.Strategy00AlikeHelper;
23  
24  /**
25   * @author ninan
26   * 
27   */
28  public class Strategy13 implements Strategy {
29  
30  	private static final int[] multiplicators = new int[] { 0, 1, 2, 1, 2, 1,
31  			2, 0, 0 };
32  
33  	/**
34  	 * @see net.sf.plausj.bank.german.strategy.Strategy#calculateCheckDigit(net.sf.plausj.bank.german.BankCode,
35  	 *      net.sf.plausj.bank.german.AccountCode)
36  	 */
37  	public CheckDigit calculateCheckDigit(final BankCode bankCode,
38  			final AccountCode accountCode) {
39  
40  		int sum = 0;
41  		int cd = 0;
42  
43  		sum = Strategy00AlikeHelper.calculateSum(accountCode, multiplicators);
44  		cd = Strategy00AlikeHelper.getCheckDigitFromSum(sum);
45  		if (cd == accountCode.getDigitAtPos(7)) {
46  			return new CheckDigit(7, cd);
47  		} else {
48  			AccountCode paddedAccountCode = new AccountCode(accountCode
49  					.getAccountCode().substring(3, 10).concat("00"));
50  			sum = Strategy00AlikeHelper.calculateSum(paddedAccountCode,
51  					multiplicators);
52  			cd = Strategy00AlikeHelper.getCheckDigitFromSum(sum);
53  			return new CheckDigit(9, cd);
54  		}
55  	}
56  
57  }