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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* 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 com.feilong.lib.beanutils.locale.converters;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.feilong.lib.beanutils.ConversionException;
import com.feilong.lib.beanutils.locale.BaseLocaleConverter;
/**
*
* Standard {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* implementation that converts an incoming
* locale-sensitive object into a java.lang.String object,
* optionally using a default value or throwing a
* {@link com.feilong.lib.beanutils.ConversionException}
* if a conversion error occurs.
*
*
* @version $Id$
*/
public class StringLocaleConverter extends BaseLocaleConverter{
/** The Constant log. */
private static final Logger LOGGER = LoggerFactory.getLogger(StringLocaleConverter.class);
//---------------------------------------------------------------
// ----------------------------------------------------- Instance Variables
// ----------------------------------------------------------- Constructors
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.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 convertion.
*
*/
public StringLocaleConverter(){
this(false);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.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 StringLocaleConverter(final boolean locPattern){
this(Locale.getDefault(), locPattern);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.ConversionException}
* if a conversion error occurs. An unlocalized pattern is used for the convertion.
*
* @param locale
* The locale
*/
public StringLocaleConverter(final Locale locale){
this(locale, false);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.ConversionException}
* if a conversion error occurs.
*
* @param locale
* The locale
* @param locPattern
* Indicate whether the pattern is localized or not
*/
public StringLocaleConverter(final Locale locale, final boolean locPattern){
this(locale, (String) null, locPattern);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.ConversionException}
* if a conversion error occurs. An unlocalized pattern is used for the convertion.
*
* @param locale
* The locale
* @param pattern
* The convertion pattern
*/
public StringLocaleConverter(final Locale locale, final String pattern){
this(locale, pattern, false);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will throw a {@link com.feilong.lib.beanutils.ConversionException}
* if a conversion error occurs.
*
* @param locale
* The locale
* @param pattern
* The convertion pattern
* @param locPattern
* Indicate whether the pattern is localized or not
*/
public StringLocaleConverter(final Locale locale, final String pattern, final boolean locPattern){
super(locale, pattern, locPattern);
}
/**
* Create a {@link com.feilong.lib.beanutils.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 convertion.
*
* @param defaultValue
* The default value to be returned
*/
public StringLocaleConverter(final Object defaultValue){
this(defaultValue, false);
}
/**
* Create a {@link com.feilong.lib.beanutils.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 StringLocaleConverter(final Object defaultValue, final boolean locPattern){
this(defaultValue, Locale.getDefault(), locPattern);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. An unlocalized pattern is used for the convertion.
*
* @param defaultValue
* The default value to be returned
* @param locale
* The locale
*/
public StringLocaleConverter(final Object defaultValue, final Locale locale){
this(defaultValue, locale, false);
}
/**
* Create a {@link com.feilong.lib.beanutils.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 StringLocaleConverter(final Object defaultValue, final Locale locale, final boolean locPattern){
this(defaultValue, locale, null, locPattern);
}
/**
* Create a {@link com.feilong.lib.beanutils.locale.LocaleConverter}
* that will return the specified default value
* if a conversion error occurs. An unlocalized pattern is used for the convertion.
*
* @param defaultValue
* The default value to be returned
* @param locale
* The locale
* @param pattern
* The convertion pattern
*/
public StringLocaleConverter(final Object defaultValue, final Locale locale, final String pattern){
this(defaultValue, locale, pattern, false);
}
/**
* Create a {@link com.feilong.lib.beanutils.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 convertion pattern
* @param locPattern
* Indicate whether the pattern is localized or not
*/
public StringLocaleConverter(final Object defaultValue, final Locale locale, final String pattern, final boolean locPattern){
super(defaultValue, locale, pattern, locPattern);
}
// --------------------------------------------------------- Methods
/**
* Convert the specified locale-sensitive input object into an output object of the
* specified type.
*
* @param value
* The input object to be converted
* @param pattern
* The pattern is used for the convertion
* @return The converted value
*
* @throws com.feilong.lib.beanutils.ConversionException
* if conversion
* cannot be performed successfully
* @throws ParseException
* if an error occurs
*/
@Override
protected Object parse(final Object value,final String pattern) throws ParseException{
String result = null;
if ((value instanceof Integer) || (value instanceof Long) || (value instanceof BigInteger) || (value instanceof Byte)
|| (value instanceof Short)){
result = getDecimalFormat(locale, pattern).format(((Number) value).longValue());
}else if ((value instanceof Double) || (value instanceof BigDecimal) || (value instanceof Float)){
result = getDecimalFormat(locale, pattern).format(((Number) value).doubleValue());
}else if (value instanceof Date){ // java.util.Date, java.sql.Date, java.sql.Time, java.sql.Timestamp
final SimpleDateFormat dateFormat = new SimpleDateFormat(pattern, locale);
result = dateFormat.format(value);
}else{
result = value.toString();
}
return result;
}
/**
* Make an instance of DecimalFormat.
*
* @param locale
* The locale
* @param pattern
* The pattern is used for the convertion
* @return The format for the locale and pattern
*
* @throws ConversionException
* if conversion cannot be performed
* successfully
* @throws ParseException
* if an error occurs parsing a String to a Number
*/
private DecimalFormat getDecimalFormat(final Locale locale,final String pattern){
final DecimalFormat numberFormat = (DecimalFormat) NumberFormat.getInstance(locale);
// if some constructors default pattern to null, it makes only sense to handle null pattern gracefully
if (pattern != null){
if (locPattern){
numberFormat.applyLocalizedPattern(pattern);
}else{
numberFormat.applyPattern(pattern);
}
}else{
LOGGER.debug("No pattern provided, using default.");
}
return numberFormat;
}
}