/*
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.format.number;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.format.AnnotationFormatterFactory;
import org.springframework.format.Formatter;
import org.springframework.format.Parser;
import org.springframework.format.Printer;
import org.springframework.format.annotation.NumberFormat;
import org.springframework.format.annotation.NumberFormat.Style;
import org.springframework.util.StringUtils;
import org.springframework.util.StringValueResolver;
/**
* Formats fields annotated with the {@link NumberFormat} annotation.
*
* @author Keith Donald
* @since 3.0
* @see NumberFormat
*/
public class NumberFormatAnnotationFormatterFactory
implements AnnotationFormatterFactory<NumberFormat>, EmbeddedValueResolverAware {
private final Set<Class<?>> fieldTypes;
private StringValueResolver embeddedValueResolver;
public NumberFormatAnnotationFormatterFactory() {
Set<Class<?>> rawFieldTypes = new HashSet<Class<?>>(7);
rawFieldTypes.add(Short.class);
rawFieldTypes.add(Integer.class);
rawFieldTypes.add(Long.class);
rawFieldTypes.add(Float.class);
rawFieldTypes.add(Double.class);
rawFieldTypes.add(BigDecimal.class);
rawFieldTypes.add(BigInteger.class);
this.fieldTypes = Collections.unmodifiableSet(rawFieldTypes);
}
public final Set<Class<?>> getFieldTypes() {
return this.fieldTypes;
}
public void setEmbeddedValueResolver(StringValueResolver resolver) {
this.embeddedValueResolver = resolver;
}
protected String resolveEmbeddedValue(String value) {
return (this.embeddedValueResolver != null ? this.embeddedValueResolver.resolveStringValue(value) : value);
}
public Printer<Number> getPrinter(NumberFormat annotation, Class<?> fieldType) {
return configureFormatterFrom(annotation);
}
public Parser<Number> getParser(NumberFormat annotation, Class<?> fieldType) {
return configureFormatterFrom(annotation);
}
private Formatter<Number> configureFormatterFrom(NumberFormat annotation) {
if (StringUtils.hasLength(annotation.pattern())) {
return new NumberFormatter(resolveEmbeddedValue(annotation.pattern()));
}
else {
Style style = annotation.style();
if (style == Style.PERCENT) {
return new PercentFormatter();
}
else if (style == Style.CURRENCY) {
return new CurrencyFormatter();
}
else {
return new NumberFormatter();
}
}
}
}
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