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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;
17  
18  import java.util.ArrayList;
19  import java.util.List;
20  
21  import org.hibernate.Criteria;
22  import org.hibernate.Session;
23  import org.seasar.tuigwaa.database.function.criteria.HibernateCriteria;
24  import org.seasar.tuigwaa.database.function.criteria.ICriteria;
25  
26  
27  public abstract class AbstractCriteriaExeFunction extends AbstractExeFunction{
28  
29  	private List projectionList_;
30  
31  	public List getProjectionList() {
32  		return projectionList_;
33  	}
34  
35  	public boolean isProjection() {
36  		return (projectionList_ != null);
37  	}
38  
39  	public void addProjection(String projection) {
40  		if (projectionList_ == null) {
41  			projectionList_ = new ArrayList();
42  		}
43  		projectionList_.add(projection);
44  	}
45  
46  	protected final ICriteria createHibernateCriteria() {
47  		Session session = getSession();
48  		Class clazz = getEntity().getJavaClass();
49  		Criteria criteria = session.createCriteria(clazz);
50  
51  		ICriteria icriteria = null;
52  		if (isProjection()) {
53  			icriteria = new HibernateCriteria(criteria, getAggregationEntity());
54  		} else {
55  			icriteria = new HibernateCriteria(criteria, getEntity());
56  		}
57  		return icriteria;
58  	}
59  }