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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 StrategyC2 implements Strategy {
28  
29  	private static final Strategy S00 = new Strategy00();
30  
31  	private static final Strategy S22 = new Strategy22();
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  		CheckDigit cd = methodOne(accountCode);
40  		if (!accountCode.matchesCheckDigit(cd)) {
41  			cd = methodTwo(accountCode);
42  		}
43  		return cd;
44  	}
45  
46  	private CheckDigit methodOne(AccountCode accountCode) {
47  		return S22.calculateCheckDigit(null, accountCode);
48  	}
49  
50  	private CheckDigit methodTwo(AccountCode accountCode) {
51  		return S00.calculateCheckDigit(null, accountCode);
52  	}
53  
54  }