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Java > Open Source Codes > org > apache > ws > jaxme > sqls > ColumnSet


1 /*
2  * Copyright 2003, 2004 The Apache Software Foundation
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.apache.ws.jaxme.sqls;
18
19 import java.util.Iterator JavaDoc;
20
21 /** <p>A common base interface for {@link Index} and {@link ForeignKey}.</p>
22  *
23  * @author <a HREF="mailto:joe@ispsoft.de">Jochen Wiedmann</a>
24  */
25 public interface ColumnSet {
26    /** <p>Returns the table on which the foreign key is defined.</p>
27    */
28   public Table getTable();
29
30    /** <p>Returns the column sets columns. In the case of an {@link Index},
31     * these are the columns that have been added via {@link Index#addColumn(Column)}.
32     * In the case of a {@link ForeignKey}, these are the local columns of
33     * column links.</p>
34    */
35   public Iterator JavaDoc getColumns();
36 }
37
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