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1   /*
2    * Copyright 2006-2007 the original author or authors.
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 org.springframework.batch.sample.domain.trade;
18  
19  import java.util.HashMap;
20  import java.util.Map;
21  
22  /**
23   * Enum representing on of 3 possible actions on a customer update:
24   * Add, update, or delete
25   * 
26   * @author Lucas Ward
27   *
28   */
29  public enum CustomerOperation {
30  	ADD('A'), UPDATE('U'), DELETE('D');
31  	
32  	private final char code;
33  	private static final Map<Character,CustomerOperation> codeMap;
34  	
35  	private CustomerOperation(char code) {
36  		this.code = code;
37  	}
38  	
39  	static{
40  		codeMap = new HashMap<Character,CustomerOperation>();
41  		for(CustomerOperation operation:values()){
42  			codeMap.put(operation.getCode(), operation);
43  		}
44  	}
45  	
46  	public static CustomerOperation fromCode(char code){
47  		if(codeMap.containsKey(code)){
48  			return codeMap.get(code);
49  		}
50  		else{
51  			throw new IllegalArgumentException("Invalid code: [" + code + "]");
52  		}
53  	}
54  	
55  	public char getCode() {
56  		return code;
57  	}
58  }