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Java > Open Source Codes > com > mckoi > database > TArrayType


1 /**
2  * com.mckoi.database.TArrayType 26 Jul 2002
3  *
4  * Mckoi SQL Database ( http://www.mckoi.com/database )
5  * Copyright (C) 2000, 2001, 2002 Diehl and Associates, Inc.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * Version 2 as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License Version 2 for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * Version 2 along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  *
20  * Change Log:
21  *
22  *
23  */
24
25 package com.mckoi.database;
26
27 import com.mckoi.database.global.SQLTypes;
28
29 /**
30  * An implementation of TType for an expression array.
31  *
32  * @author Tobias Downer
33  */
34
35 public class TArrayType extends TType {
36
37   static final long serialVersionUID = 6551509064212831922L;
38
39   /**
40    * Constructs the type.
41    */
42   public TArrayType() {
43     // There is no SQL type for a query plan node so we make one up here
44 super(SQLTypes.ARRAY);
45   }
46
47   public boolean comparableTypes(TType type) {
48     throw new Error JavaDoc("Query Plan types should not be compared.");
49   }
50   
51   public int compareObs(Object JavaDoc ob1, Object JavaDoc ob2) {
52     throw new Error JavaDoc("Query Plan types should not be compared.");
53   }
54   
55   public int calculateApproximateMemoryUse(Object JavaDoc ob) {
56     return 5000;
57   }
58   
59   public Class JavaDoc javaClass() {
60     return Expression[].class;
61   }
62
63 }
64
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