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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.Strategy06AlikeHelper;
23  
24  /**
25   * @author ninan
26   * 
27   */
28  public class Strategy91 implements Strategy {
29  
30  	private static final int[][] multiplicators = new int[][] {
31  			{ 7, 6, 5, 4, 3, 2, 0, 0, 0, 0 }, { 2, 3, 4, 5, 6, 7, 0, 0, 0, 0 },
32  			{ 10, 9, 8, 7, 6, 5, 0, 4, 3, 2 },
33  			{ 9, 10, 5, 8, 4, 2, 0, 0, 0, 0 } };
34  
35  	/**
36  	 * @see net.sf.plausj.bank.german.strategy.Strategy#calculateCheckDigit(net.sf.plausj.bank.german.BankCode,
37  	 *      net.sf.plausj.bank.german.AccountCode)
38  	 */
39  	public CheckDigit calculateCheckDigit(final BankCode bankCode,
40  			final AccountCode accountCode) {
41  
42  		CheckDigit cdObj = null;
43  		for (int i = 0; i < multiplicators.length; ++i) {
44  			int sum = 0;
45  			for (int j = AccountCode.ACCOUNT_CODE_MAX_LENGTH - 1; j >= 0; --j) {
46  				sum += accountCode.getDigitAtPos(j) * multiplicators[i][j];
47  			}
48  			int cd = Strategy06AlikeHelper.getCheckDigitFromSum(sum);
49  			cdObj = new CheckDigit(6, cd);
50  			if (accountCode.matchesCheckDigit(cdObj)) {
51  				break;
52  			}
53  		}
54  		return cdObj;
55  
56  	}
57  
58  }