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1   /*
2    * Copyright 2004-2006 the Seasar Foundation and the Others.
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, 
13   * either express or implied. See the License for the specific language
14   * governing permissions and limitations under the License.
15   */
16  package org.seasar.tuigwaa.database.function.aggregation;
17  
18  public class GroupProjectionFunction extends AbstractProjectionFunction {
19  
20  	private String option;
21  
22  	public void setOption(String option) {
23  		this.option = option;
24  	}
25  
26  	public String getOption() {
27  		return option;
28  	}
29  
30  	public Object evaluate(IProjectionList list) {
31  		if (option == null) {
32  			return list.addGroupProperty(getField(), getAlias());
33  		} else {
34  			String[] options = option.split(",");
35  			if (options.length > 1) {
36  				((HibernateProjectionList) list).extendColumn(options.length);
37  			}
38  			for (int i = 0; i < options.length; i++) {
39  				list = list.addGroupProperty(options[i] + getField(),
40  						options[i] + getAlias());
41  			}
42  			return list;
43  		}
44  	}
45  }