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Java > Open Source Codes > org > apache > commons > math > stat > inference > TestFactory


1 /*
2  * Copyright 2005 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 package org.apache.commons.math.stat.inference;
17 import org.apache.commons.discovery.tools.DiscoverClass;
18
19 /**
20  * Abstract factory to create inference test instances.
21  *
22  * @since 1.1
23  * @version $Revision$ $Date: 2005-07-04 16:30:05 -0700 (Mon, 04 Jul 2005) $
24  */
25 public abstract class TestFactory {
26     /**
27      * Default constructor.
28      */
29     protected TestFactory() {
30         super();
31     }
32     
33     /**
34      * Create an instance of a <code>TestFactory</code>
35      *
36      * @return a new factory.
37      */
38     public static TestFactory newInstance() {
39         TestFactory factory = null;
40         try {
41             DiscoverClass dc = new DiscoverClass();
42             factory = (TestFactory) dc.newInstance(
43                     TestFactory.class,
44             "org.apache.commons.math.stat.inference.TestFactoryImpl");
45         } catch(Throwable JavaDoc t) {
46             return new TestFactoryImpl();
47         }
48         return factory;
49     }
50     
51     /**
52      * Create a TTest instance.
53      *
54      * @return a new TTest instance
55      */
56     public abstract TTest createTTest();
57     
58     /**
59      * Create a ChiSquareTest instance.
60      *
61      * @return a new ChiSquareTest instance
62      */
63     public abstract ChiSquareTest createChiSquareTest();
64 }
65
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