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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  
23  /**
24   * @author ninan
25   * 
26   */
27  public class StrategyB0 implements Strategy {
28  
29  	/**
30  	 * @see net.sf.plausj.bank.german.strategy.Strategy#calculateCheckDigit(net.sf.plausj.bank.german.BankCode,
31  	 *      net.sf.plausj.bank.german.AccountCode)
32  	 */
33  	public CheckDigit calculateCheckDigit(final BankCode bankCode,
34  			final AccountCode accountCode) {
35  
36  		CheckDigit cd = null;
37  
38  		if (accountCode.getRealLength() < 10
39  				|| 8 == accountCode.getDigitAtPos(0)) {
40  
41  			return new CheckDigit(CheckDigit.ALWAYS_INVALID, 0);
42  
43  		} else {
44  
45  			switch (accountCode.getDigitAtPos(7)) {
46  			case 1:
47  			case 2:
48  			case 3:
49  			case 6:
50  				cd = new CheckDigit(CheckDigit.ALWAYS_VALID, 0);
51  				break;
52  			case 0:
53  			case 4:
54  			case 5:
55  			case 7:
56  			case 8:
57  			case 9:
58  				cd = new Strategy06()
59  						.calculateCheckDigit(bankCode, accountCode);
60  				break;
61  			}
62  
63  		}
64  
65  		return cd;
66  
67  	}
68  
69  }