01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.wicket.util.convert.converters;
18:
19: import java.util.Locale;
20:
21: import org.apache.wicket.util.convert.IConverter;
22:
23: /**
24: * Converts from Object to Double.
25: *
26: * @author Eelco Hillenius
27: * @author Jonathan Locke
28: */
29: public final class DoubleConverter extends AbstractDecimalConverter {
30: private static final long serialVersionUID = 1L;
31:
32: /**
33: * The singleton instance for a double converter
34: */
35: public static final IConverter INSTANCE = new DoubleConverter();
36:
37: /**
38: * @see org.apache.wicket.util.convert.IConverter#convertToObject(java.lang.Object,Locale)
39: */
40: public Object convertToObject(final String value, Locale locale) {
41: final Number number = parse(value, -Double.MAX_VALUE,
42: Double.MAX_VALUE, locale);
43: // Double.MIN is the smallest nonzero positive number, not the largest
44: // negative number
45:
46: if (number == null) {
47: return null;
48: }
49:
50: return new Double(number.doubleValue());
51: }
52:
53: /**
54: * @see org.apache.wicket.util.convert.converters.AbstractConverter#getTargetType()
55: */
56: protected Class getTargetType() {
57: return Double.class;
58: }
59: }
|