KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > derby > iapi > types > VariableSizeDataValue


1 /*
2
3    Derby - Class org.apache.derby.iapi.types.VariableSizeDataValue
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.types;
23
24 import org.apache.derby.iapi.error.StandardException;
25
26 /**
27  * The VariableSizeDataValue interface corresponds to
28  * Datatypes that have adjustable width.
29  *
30  * The following methods are defined herein:
31  * setWidth()
32  *
33  * @author jamie
34  */
35 public interface VariableSizeDataValue
36 {
37
38     public static int IGNORE_PRECISION = -1;
39
40     /*
41      * Set the width and scale (if relevant). Sort of a poor
42      * man's normalize. Used when we need to normalize a datatype
43      * but we don't want to use a NormalizeResultSet (e.g.
44      * for an operator that can change the width/scale of a
45      * datatype, namely CastNode).
46      *
47      * @param desiredWidth width
48      * @param desiredScale scale, if relevant (ignored for strings)
49      * @param errorOnTrunc throw an error on truncation of value
50      *
51      * @exception StandardException Thrown on error
52      */
53     public void setWidth(int desiredWidth,
54                                     int desiredScale,
55                                     boolean errorOnTrunc)
56                             throws StandardException;
57 }
58
Popular Tags