1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://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
18 package org.apache.commons.beanutils2.locale.converters;
19
20 import java.text.ParseException;
21 import java.util.Locale;
22
23 import org.apache.commons.beanutils2.ConversionException;
24
25 /**
26 * Standard {@link org.apache.commons.beanutils2.locale.LocaleConverter} implementation that converts an incoming locale-sensitive String into a
27 * {@link java.math.BigDecimal} object, optionally using a default value or throwing a {@link org.apache.commons.beanutils2.ConversionException} if a conversion
28 * error occurs.
29 */
30 public class FloatLocaleConverter extends DecimalLocaleConverter<Float> {
31
32 /**
33 * Builds instances of {@link ByteLocaleConverter}.
34 */
35 public static class Builder extends DecimalLocaleConverter.Builder<Builder, Float> {
36
37 /**
38 * Constructs a new instance.
39 */
40 public Builder() {
41 // empty
42 }
43
44 @Override
45 public FloatLocaleConverter get() {
46 return new FloatLocaleConverter(defaultValue, locale, pattern, useDefault || defaultValue != null, localizedPattern);
47 }
48
49 }
50
51 /**
52 * Constructs a new builder.
53 *
54 * @return a new builder.
55 */
56 public static Builder builder() {
57 return new Builder();
58 }
59
60 private FloatLocaleConverter(final Float defaultValue, final Locale locale, final String pattern, final boolean useDefault, final boolean locPattern) {
61 super(defaultValue, locale, pattern, useDefault, locPattern);
62 }
63
64 /**
65 * Parses the specified locale-sensitive input object into an output object of the specified type. This method will return Float value or throw exception if
66 * value cannot be stored in the Float.
67 *
68 * @param value The input object to be converted
69 * @param pattern The pattern is used for the conversion
70 * @return The converted value
71 * @throws ConversionException if conversion cannot be performed successfully
72 * @throws ParseException if an error occurs parsing a String to a Number
73 */
74 @Override
75 protected Float parse(final Object value, final String pattern) throws ParseException {
76 final Number parsed = super.parse(value, pattern);
77 final double doubleValue = parsed.doubleValue();
78 final double posDouble = doubleValue >= 0 ? doubleValue : doubleValue * -1;
79 if (posDouble != 0 && (posDouble < Float.MIN_VALUE || posDouble > Float.MAX_VALUE)) {
80 throw new ConversionException("Supplied number is not of type Float: " + parsed);
81 }
82 return Float.valueOf(parsed.floatValue()); // unlike superclass it returns Float type
83 }
84 }