gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / dataTypes / impl / coercion / CoerceToInt.java @ 2092
History | View | Annotate | Download (3.28 KB)
1 |
/**
|
---|---|
2 |
* gvSIG. Desktop Geographic Information System.
|
3 |
*
|
4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or modify it under
|
7 |
* the terms of the GNU General Public License as published by the Free Software
|
8 |
* Foundation; either version 2 of the License, or (at your option) any later
|
9 |
* version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful, but WITHOUT
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
13 |
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
14 |
* details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License along with
|
17 |
* this program; if not, write to the Free Software Foundation, Inc., 51
|
18 |
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
19 |
*
|
20 |
* For any additional information, do not hesitate to contact us at info AT
|
21 |
* gvsig.com, or visit our website www.gvsig.com.
|
22 |
*/
|
23 |
package org.gvsig.tools.dataTypes.impl.coercion; |
24 |
|
25 |
import java.text.DecimalFormat; |
26 |
import java.text.NumberFormat; |
27 |
import java.text.ParsePosition; |
28 |
import java.util.Date; |
29 |
import org.gvsig.tools.dataTypes.AbstractCoercion; |
30 |
import org.gvsig.tools.dataTypes.CoercionException; |
31 |
import org.gvsig.tools.dataTypes.CoercionContext; |
32 |
import org.gvsig.tools.dataTypes.CoercionContextLocale; |
33 |
import org.gvsig.tools.dataTypes.DataTypeUtils; |
34 |
|
35 |
@SuppressWarnings("UseSpecificCatch") |
36 |
public class CoerceToInt extends AbstractCoercion { |
37 |
|
38 |
@Override
|
39 |
public Object coerce(Object value) throws CoercionException { |
40 |
if (value == null || value instanceof Integer) { |
41 |
return value;
|
42 |
} |
43 |
return coerce(value, null); |
44 |
} |
45 |
|
46 |
@Override
|
47 |
public Object coerce(Object value, CoercionContext context) throws CoercionException { |
48 |
if (value == null || value instanceof Integer) { |
49 |
return value;
|
50 |
} |
51 |
CoercionContextLocale theContext; |
52 |
if (context instanceof CoercionContextLocale) { |
53 |
theContext = (CoercionContextLocale) context; |
54 |
} else {
|
55 |
theContext = DataTypeUtils.coerceContextDefaultLocale(); |
56 |
} |
57 |
Number num;
|
58 |
try {
|
59 |
if (value instanceof Number) { |
60 |
num = (Number) value;
|
61 |
|
62 |
} else if (value instanceof Boolean) { |
63 |
num = ((boolean) value ? 1 : 0); |
64 |
|
65 |
} else if (value instanceof Date) { |
66 |
num = ((Date) value).getTime();
|
67 |
|
68 |
} else {
|
69 |
String s = value.toString();
|
70 |
if (s == null) { |
71 |
return null; |
72 |
} |
73 |
s = s.trim().toLowerCase(); |
74 |
if (s.length() == 0) { |
75 |
return null; |
76 |
} |
77 |
if (s.startsWith("0x")) { |
78 |
num = Integer.valueOf(s.substring(2), 16); |
79 |
|
80 |
} else {
|
81 |
if (s.startsWith("+")) { |
82 |
s = s.substring(1);
|
83 |
} |
84 |
ParsePosition p = new ParsePosition(0); |
85 |
DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(theContext.locale()); |
86 |
num = nf.parse(s, p); |
87 |
if (p.getErrorIndex() > 0 || p.getIndex() < s.length()) { |
88 |
throw new CoercionException("Can't coerce '" + s + "' to int with locale " + theContext.locale().getLanguage() + "(error index " + p.getErrorIndex() + ", index " + p.getIndex() + ")."); |
89 |
} |
90 |
} |
91 |
} |
92 |
return num.intValue();
|
93 |
} catch (Exception e) { |
94 |
throw new CoercionException("Can't coerce '" + value.toString() + "' to integer.", e); |
95 |
} |
96 |
} |
97 |
|
98 |
} |