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Apache Commons BeanUtils provides an easy-to-use but flexible wrapper around reflection and introspection.
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.commons.beanutils2.locale.converters;
import java.math.BigInteger;
import java.text.ParseException;
import java.util.Locale;
import org.apache.commons.beanutils2.ConversionException;
/**
* Standard {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* implementation that converts an incoming
* locale-sensitive String into a {@code java.math.BigInteger} object,
* optionally using a default value or throwing a
* {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs.
*/
public class BigIntegerLocaleConverter extends DecimalLocaleConverter {
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs. The locale is the default locale for
* this instance of the Java Virtual Machine and an unlocalized pattern is used
* for the conversion.
*/
public BigIntegerLocaleConverter() {
this(false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs. The locale is the default locale for
* this instance of the Java Virtual Machine.
*
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final boolean locPattern) {
this(Locale.getDefault(), locPattern);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs. An unlocalized pattern is used for the conversion.
*
* @param locale The locale
*/
public BigIntegerLocaleConverter(final Locale locale) {
this(locale, false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs.
*
* @param locale The locale
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final Locale locale, final boolean locPattern) {
this(locale, (String) null, locPattern);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs. An unlocalized pattern is used for the conversion.
*
* @param locale The locale
* @param pattern The conversion pattern
*/
public BigIntegerLocaleConverter(final Locale locale, final String pattern) {
this(locale, pattern, false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will throw a {@link org.apache.commons.beanutils2.ConversionException}
* if a conversion error occurs.
*
* @param locale The locale
* @param pattern The conversion pattern
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final Locale locale, final String pattern, final boolean locPattern) {
super(locale, pattern, locPattern);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. The locale is the default locale for
* this instance of the Java Virtual Machine and an unlocalized pattern is used
* for the conversion.
*
* @param defaultValue The default value to be returned
*/
public BigIntegerLocaleConverter(final Object defaultValue) {
this(defaultValue, false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. The locale is the default locale for
* this instance of the Java Virtual Machine.
*
* @param defaultValue The default value to be returned
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final Object defaultValue, final boolean locPattern) {
this(defaultValue, Locale.getDefault(), locPattern);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. An unlocalized pattern is used for the conversion.
*
* @param defaultValue The default value to be returned
* @param locale The locale
*/
public BigIntegerLocaleConverter(final Object defaultValue, final Locale locale) {
this(defaultValue, locale, false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs.
*
* @param defaultValue The default value to be returned
* @param locale The locale
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final Object defaultValue, final Locale locale, final boolean locPattern) {
this(defaultValue, locale, null, locPattern);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. An unlocalized pattern is used for the conversion.
*
* @param defaultValue The default value to be returned
* @param locale The locale
* @param pattern The conversion pattern
*/
public BigIntegerLocaleConverter(final Object defaultValue, final Locale locale, final String pattern) {
this(defaultValue, locale, pattern, false);
}
/**
* Create a {@link org.apache.commons.beanutils2.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs.
*
* @param defaultValue The default value to be returned
* @param locale The locale
* @param pattern The conversion pattern
* @param locPattern Indicate whether the pattern is localized or not
*/
public BigIntegerLocaleConverter(final Object defaultValue, final Locale locale, final String pattern,
final boolean locPattern) {
super(defaultValue, locale, pattern, locPattern);
}
/**
* Convert the specified locale-sensitive input object into an output object of
* BigInteger type.
*
* @param value The input object to be converted
* @param pattern The pattern is used for the conversion
* @return The converted value
*
* @throws ConversionException if conversion cannot be performed
* successfully
* @throws ParseException if an error occurs parsing a String to a Number
* @since 1.8.0
*/
@Override
protected Object parse(final Object value, final String pattern) throws ParseException {
final Object result = super.parse(value, pattern);
if (result == null || result instanceof BigInteger) {
return result;
}
if (result instanceof Number) {
return BigInteger.valueOf(((Number)result).longValue());
}
try {
return new BigInteger(result.toString());
}
catch (final NumberFormatException ex) {
throw new ConversionException("Supplied number is not of type BigInteger: " + result);
}
}
}