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Java > Open Source Codes > org > apache > derby > iapi > store > access > StoreCostResult


1 /*
2
3    Derby - Class org.apache.derby.iapi.store.access.StoreCostResult
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.derby.iapi.store.access;
23
24 /**
25
26 Manage the result information from a single call to
27 StoreCostController.getScanCost().
28 <p>
29 @see StoreCostController
30
31 **/
32
33 public interface StoreCostResult
34 {
35     /**
36      * Get the estimated row count.
37      **/
38     public long getEstimatedRowCount();
39
40     /**
41      * Set the estimated row count.
42      **/
43     public void setEstimatedRowCount(long count);
44
45     /**
46      * Get the estimated cost.
47      **/
48     public double getEstimatedCost();
49
50     /**
51      * Set the estimated cost.
52      **/
53     public void setEstimatedCost(double cost);
54 }
55
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