001/* 002 * Copyright 2002-2017 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; 018 019import java.util.Set; 020 021import org.springframework.context.support.EmbeddedValueResolutionSupport; 022import org.springframework.format.AnnotationFormatterFactory; 023import org.springframework.format.Formatter; 024import org.springframework.format.Parser; 025import org.springframework.format.Printer; 026import org.springframework.format.annotation.NumberFormat; 027import org.springframework.format.annotation.NumberFormat.Style; 028import org.springframework.util.NumberUtils; 029import org.springframework.util.StringUtils; 030 031/** 032 * Formats fields annotated with the {@link NumberFormat} annotation. 033 * 034 * @author Keith Donald 035 * @author Juergen Hoeller 036 * @since 3.0 037 * @see NumberFormat 038 */ 039public class NumberFormatAnnotationFormatterFactory extends EmbeddedValueResolutionSupport 040 implements AnnotationFormatterFactory<NumberFormat> { 041 042 @Override 043 public Set<Class<?>> getFieldTypes() { 044 return NumberUtils.STANDARD_NUMBER_TYPES; 045 } 046 047 @Override 048 public Printer<Number> getPrinter(NumberFormat annotation, Class<?> fieldType) { 049 return configureFormatterFrom(annotation); 050 } 051 052 @Override 053 public Parser<Number> getParser(NumberFormat annotation, Class<?> fieldType) { 054 return configureFormatterFrom(annotation); 055 } 056 057 058 private Formatter<Number> configureFormatterFrom(NumberFormat annotation) { 059 String pattern = resolveEmbeddedValue(annotation.pattern()); 060 if (StringUtils.hasLength(pattern)) { 061 return new NumberStyleFormatter(pattern); 062 } 063 else { 064 Style style = annotation.style(); 065 if (style == Style.CURRENCY) { 066 return new CurrencyStyleFormatter(); 067 } 068 else if (style == Style.PERCENT) { 069 return new PercentStyleFormatter(); 070 } 071 else { 072 return new NumberStyleFormatter(); 073 } 074 } 075 } 076 077}