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Java > Open Source Codes > org > objectweb > medor > query > lib > BasicNestedField


1 /**
2  * MEDOR: Middleware Enabling Distributed Object Requests
3  *
4  * Copyright (C) 2001-2002 France Telecom R&D
5  * Contact: alexandre.lefebvre@rd.francetelecom.com
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  *
21  * Initial developers: M. Alia, S. Chassande-Barrioz, A. Lefebvre
22  */
23
24 package org.objectweb.medor.query.lib;
25
26 import org.objectweb.medor.api.Field;
27 import org.objectweb.medor.api.MedorException;
28 import org.objectweb.medor.lib.BasicMultivaluedField;
29 import org.objectweb.medor.query.api.NestedField;
30 import org.objectweb.medor.query.api.QueryTree;
31
32 import java.util.Map JavaDoc;
33
34 /**
35  * This class represents a TupleCollection Field.
36  * It is used by Nest and Unnest QueryNodes.
37  */
38 public class BasicNestedField extends BasicMultivaluedField
39         implements NestedField {
40
41     protected QueryTree qt;
42
43     public BasicNestedField() {
44     }
45
46     public BasicNestedField(String JavaDoc name, QueryTree qt,
47                             Field[] nestedFields) throws MedorException {
48         super(name, nestedFields);
49         this.qt = qt;
50     }
51     public Object JavaDoc clone(Object JavaDoc clone,
52                         Map JavaDoc obj2clone) throws CloneNotSupportedException JavaDoc {
53         clone = super.clone(clone, obj2clone);
54         ((BasicNestedField) clone).qt = qt;
55         return clone;
56     }
57
58     public QueryTree getQueryTree() {
59         return qt;
60     }
61
62     public void replacePreviousField(Field[] neo) {
63         name2field.clear();
64         for (int i = 0; i < neo.length; i++) {
65             name2field.put(neo[i].getName(), neo[i]);
66         }
67     }
68 }
69
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