View Javadoc

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 Strategy79 implements Strategy {
29  
30  	private static final int[] multiplicatorsFull = new int[] { 2, 1, 2, 1, 2,
31  			1, 2, 1, 2 };
32  
33  	private static final int[] multiplicatorsShort = new int[] { 1, 2, 1, 2, 1,
34  			2, 1, 2, 0 };
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  
43  		int sum = 0;
44  		int pos = 0;
45  		if (0 == accountCode.getDigitAtPos(0)) {
46  			return new CheckDigit(CheckDigit.ALWAYS_INVALID, 0);
47  		} else if (1 == accountCode.getDigitAtPos(0)
48  				|| 2 == accountCode.getDigitAtPos(0)
49  				|| 9 == accountCode.getDigitAtPos(0)) {
50  			sum = Strategy00AlikeHelper.calculateSum(accountCode,
51  					multiplicatorsShort);
52  			pos = 8;
53  
54  		} else {
55  			sum = Strategy00AlikeHelper.calculateSum(accountCode,
56  					multiplicatorsFull);
57  			pos = 9;
58  		}
59  		int cd = Strategy00AlikeHelper.getCheckDigitFromSum(sum);
60  
61  		return new CheckDigit(pos, cd);
62  
63  	}
64  
65  }