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Java > Open Source Codes > org > apache > derbyTesting > unitTests > lang > EmptyResultSetStatisticsFactory


1 /*
2
3    Derby - Class org.apache.derbyTesting.unitTests.lang.EmptyResultSetStatisticsFactory
4
5    Licensed to the Apache Software Foundation (ASF) under one or more
6    contributor license agreements. See the NOTICE file distributed with
7    this work for additional information regarding copyright ownership.
8    The ASF licenses this file to You under the Apache License, Version 2.0
9    (the "License"); you may not use this file except in compliance with
10    the License. You may obtain a copy of the License at
11
12       http://www.apache.org/licenses/LICENSE-2.0
13
14    Unless required by applicable law or agreed to in writing, software
15    distributed under the License is distributed on an "AS IS" BASIS,
16    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17    See the License for the specific language governing permissions and
18    limitations under the License.
19
20  */
21
22 package org.apache.derbyTesting.unitTests.lang;
23
24 import org.apache.derby.iapi.services.monitor.Monitor;
25
26 import org.apache.derby.iapi.error.StandardException;
27
28
29 import org.apache.derby.iapi.sql.Activation;
30 import org.apache.derby.iapi.sql.ResultSet;
31 import org.apache.derby.iapi.sql.PreparedStatement;
32
33 import org.apache.derby.iapi.sql.execute.NoPutResultSet;
34 import org.apache.derby.iapi.sql.execute.ResultSetFactory;
35 import org.apache.derby.iapi.sql.execute.ResultSetStatisticsFactory;
36
37 import org.apache.derby.iapi.sql.execute.RunTimeStatistics;
38
39 import org.apache.derby.impl.sql.execute.rts.ResultSetStatistics;
40
41 import java.util.Properties JavaDoc;
42
43 /**
44  * ResultSetStatisticsFactory provides a wrapper around all of
45  * objects associated with run time statistics.
46  * <p>
47  * This implementation of the protocol is for stubbing out
48  * the RunTimeStatistics feature at execution time..
49  *
50  * @author jerry
51  */
52 public class EmptyResultSetStatisticsFactory
53         implements ResultSetStatisticsFactory
54 {
55     //
56 // ExecutionFactory interface
57 //
58 //
59 // ResultSetStatisticsFactory interface
60 //
61
62     /**
63         @see ResultSetStatisticsFactory#getRunTimeStatistics
64      */
65     public RunTimeStatistics getRunTimeStatistics(
66             Activation activation,
67             ResultSet rs,
68             NoPutResultSet[] subqueryTrackingArray)
69         throws StandardException
70     {
71         return null;
72     }
73
74     /**
75         @see ResultSetStatisticsFactory#getResultSetStatistics
76      */
77     public ResultSetStatistics getResultSetStatistics(ResultSet rs)
78     {
79         return null;
80     }
81
82     /**
83         @see ResultSetStatisticsFactory#getResultSetStatistics
84      */
85     public ResultSetStatistics getResultSetStatistics(NoPutResultSet rs)
86     {
87         return null;
88     }
89
90     /**
91         @see ResultSetStatisticsFactory#getNoRowsResultSetStatistics
92      */
93     public ResultSetStatistics getNoRowsResultSetStatistics(ResultSet rs)
94     {
95         return null;
96     }
97
98     //
99 // class interface
100 //
101 public EmptyResultSetStatisticsFactory()
102     {
103     }
104
105 }
106
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