01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package griffon.core.formatters;
19
20 import javax.annotation.Nullable;
21 import java.math.BigDecimal;
22 import java.text.DecimalFormat;
23 import java.text.NumberFormat;
24
25 import static griffon.util.GriffonNameUtils.isBlank;
26
27 /**
28 * @author Andres Almiray
29 * @since 2.0.0
30 */
31 public class BigDecimalFormatter extends AbstractFormatter<BigDecimal> {
32 public static final String PATTERN_CURRENCY = "currency";
33 public static final String PATTERN_PERCENT = "percent";
34
35 private final NumberFormat numberFormat;
36
37 public BigDecimalFormatter() {
38 this(null);
39 }
40
41 public BigDecimalFormatter(@Nullable String pattern) {
42 if (isBlank(pattern)) {
43 numberFormat = new DecimalFormat();
44 ((DecimalFormat) numberFormat).setParseBigDecimal(true);
45 } else if (PATTERN_CURRENCY.equalsIgnoreCase(pattern)) {
46 numberFormat = NumberFormat.getCurrencyInstance();
47 } else if (PATTERN_PERCENT.equalsIgnoreCase(pattern)) {
48 numberFormat = NumberFormat.getPercentInstance();
49 } else {
50 numberFormat = new DecimalFormat(pattern);
51 ((DecimalFormat) numberFormat).setParseBigDecimal(true);
52 }
53 }
54
55 @Nullable
56 @Override
57 public String format(@Nullable BigDecimal number) {
58 return number == null ? null : numberFormat.format(number);
59 }
60
61 @Nullable
62 @Override
63 public BigDecimal parse(@Nullable String str) throws ParseException {
64 if (isBlank(str)) return null;
65 try {
66 Number number = numberFormat.parse(str);
67 if (number instanceof BigDecimal) {
68 return (BigDecimal) number;
69 }
70 return new BigDecimal(number.longValue());
71 } catch (java.text.ParseException e) {
72 throw new ParseException(e);
73 }
74 }
75 }
|