1 package org.apache.commons.ognl;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with 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,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 /**
23 * This interface defines some useful constants for describing the various possible numeric types of OGNL.
24 *
25 * @author Luke Blanshard (blanshlu@netscape.net)
26 * @author Drew Davidson (drew@ognl.org)
27 */
28 public interface NumericTypes
29 {
30 // Order does matter here... see the getNumericType methods in ognl.g.
31
32 /** Type tag meaning boolean. */
33 int BOOL = 0;
34
35 /** Type tag meaning byte. */
36 int BYTE = 1;
37
38 /** Type tag meaning char. */
39 int CHAR = 2;
40
41 /** Type tag meaning short. */
42 int SHORT = 3;
43
44 /** Type tag meaning int. */
45 int INT = 4;
46
47 /** Type tag meaning long. */
48 int LONG = 5;
49
50 /** Type tag meaning java.math.BigInteger. */
51 int BIGINT = 6;
52
53 /** Type tag meaning float. */
54 int FLOAT = 7;
55
56 /** Type tag meaning double. */
57 int DOUBLE = 8;
58
59 /** Type tag meaning java.math.BigDecimal. */
60 int BIGDEC = 9;
61
62 /** Type tag meaning something other than a number. */
63 int NONNUMERIC = 10;
64
65 /**
66 * The smallest type tag that represents reals as opposed to integers. You can see whether a type tag represents
67 * reals or integers by comparing the tag to this constant: all tags less than this constant represent integers, and
68 * all tags greater than or equal to this constant represent reals. Of course, you must also check for NONNUMERIC,
69 * which means it is not a number at all.
70 */
71 int MIN_REAL_TYPE = FLOAT;
72 }