01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.db.sql;
30:
31: import java.sql.SQLException;
32: import java.util.ArrayList;
33:
34: class NumberExpr extends Expr {
35: static Expr create(String lexeme) throws SQLException {
36: if (lexeme.indexOf('.') >= 0 || lexeme.indexOf('e') >= 0
37: || lexeme.indexOf('E') >= 0)
38: return new DoubleExpr(Double.parseDouble(lexeme));
39: else {
40: long value = Long.parseLong(lexeme);
41:
42: return new LongExpr(value);
43: }
44: }
45:
46: private NumberExpr() {
47: }
48:
49: /**
50: * Returns the cost based on the given FromList.
51: */
52: public long subCost(ArrayList<FromItem> fromList) {
53: return 0;
54: }
55: }
|