01 /*
02 * Copyright 2008-2015 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core.formatters;
17
18 import javax.annotation.Nullable;
19 import java.math.BigDecimal;
20 import java.text.DecimalFormat;
21 import java.text.NumberFormat;
22
23 import static griffon.util.GriffonNameUtils.isBlank;
24
25 /**
26 * @author Andres Almiray
27 * @since 2.0.0
28 */
29 public class BigDecimalFormatter extends AbstractFormatter<BigDecimal> {
30 public static final String PATTERN_CURRENCY = "currency";
31 public static final String PATTERN_PERCENT = "percent";
32
33 private final NumberFormat numberFormat;
34
35 public BigDecimalFormatter() {
36 this(null);
37 }
38
39 public BigDecimalFormatter(@Nullable String pattern) {
40 if (isBlank(pattern)) {
41 numberFormat = new DecimalFormat();
42 ((DecimalFormat) numberFormat).setParseBigDecimal(true);
43 } else if (PATTERN_CURRENCY.equalsIgnoreCase(pattern)) {
44 numberFormat = NumberFormat.getCurrencyInstance();
45 } else if (PATTERN_PERCENT.equalsIgnoreCase(pattern)) {
46 numberFormat = NumberFormat.getPercentInstance();
47 } else {
48 numberFormat = new DecimalFormat(pattern);
49 ((DecimalFormat) numberFormat).setParseBigDecimal(true);
50 }
51 }
52
53 @Nullable
54 public String format(@Nullable BigDecimal number) {
55 return number == null ? null : numberFormat.format(number);
56 }
57
58 @Nullable
59 @Override
60 public BigDecimal parse(@Nullable String str) throws ParseException {
61 if (isBlank(str)) return null;
62 try {
63 Number number = numberFormat.parse(str);
64 if (number instanceof BigDecimal) {
65 return (BigDecimal) number;
66 }
67 return new BigDecimal(number.longValue());
68 } catch (java.text.ParseException e) {
69 throw new ParseException(e);
70 }
71 }
72 }
|