001/*
002 * Copyright 2002-2015 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.format.number.money;
018
019import java.util.Locale;
020import javax.money.MonetaryAmount;
021import javax.money.format.MonetaryAmountFormat;
022import javax.money.format.MonetaryFormats;
023
024import org.springframework.format.Formatter;
025
026/**
027 * Formatter for JSR-354 {@link javax.money.MonetaryAmount} values,
028 * delegating to {@link javax.money.format.MonetaryAmountFormat#format}
029 * and {@link javax.money.format.MonetaryAmountFormat#parse}.
030 *
031 * @author Juergen Hoeller
032 * @since 4.2
033 * @see #getMonetaryAmountFormat
034 */
035public class MonetaryAmountFormatter implements Formatter<MonetaryAmount> {
036
037        private String formatName;
038
039
040        /**
041         * Create a locale-driven MonetaryAmountFormatter.
042         */
043        public MonetaryAmountFormatter() {
044        }
045
046        /**
047         * Create a new MonetaryAmountFormatter for the given format name.
048         * @param formatName the format name, to be resolved by the JSR-354
049         * provider at runtime
050         */
051        public MonetaryAmountFormatter(String formatName) {
052                this.formatName = formatName;
053        }
054
055
056        /**
057         * Specify the format name, to be resolved by the JSR-354 provider
058         * at runtime.
059         * <p>Default is none, obtaining a {@link MonetaryAmountFormat}
060         * based on the current locale.
061         */
062        public void setFormatName(String formatName) {
063                this.formatName = formatName;
064        }
065
066
067        @Override
068        public String print(MonetaryAmount object, Locale locale) {
069                return getMonetaryAmountFormat(locale).format(object);
070        }
071
072        @Override
073        public MonetaryAmount parse(String text, Locale locale) {
074                return getMonetaryAmountFormat(locale).parse(text);
075        }
076
077
078        /**
079         * Obtain a MonetaryAmountFormat for the given locale.
080         * <p>The default implementation simply calls
081         * {@link javax.money.format.MonetaryFormats#getAmountFormat}
082         * with either the configured format name or the given locale.
083         * @param locale the current locale
084         * @return the MonetaryAmountFormat (never {@code null})
085         * @see #setFormatName
086         */
087        protected MonetaryAmountFormat getMonetaryAmountFormat(Locale locale) {
088                if (this.formatName != null) {
089                        return MonetaryFormats.getAmountFormat(this.formatName);
090                }
091                else {
092                        return MonetaryFormats.getAmountFormat(locale);
093                }
094        }
095
096}