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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.beanutils.locale.converters; import org.apache.commons.beanutils.locale.BaseLocaleConverter; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import java.text.DecimalFormat; import java.text.ParseException; import java.util.Locale; /** * <p>Standard {@link org.apache.commons.beanutils.locale.LocaleConverter} * implementation that converts an incoming * locale-sensitive String into a <code>java.lang.Number</code> object, * optionally using a default value or throwing a * {@link org.apache.commons.beanutils.ConversionException} * if a conversion error occurs.</p> * * @author Yauheny Mikulski * @author Yoav Shapira * @since 1.7 */ public class DecimalLocaleConverter extends BaseLocaleConverter { // ----------------------------------------------------- Instance Variables /** All logging goes through this logger */ private Log log = LogFactory.getLog(DecimalLocaleConverter.class); // ----------------------------------------------------------- Constructors /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.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 DecimalLocaleConverter() { this(false); } /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.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 DecimalLocaleConverter(boolean locPattern) { this(Locale.getDefault(), locPattern); } /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.beanutils.ConversionException} * if a conversion error occurs. An unlocalized pattern is used for the convertion. * * @param locale The locale */ public DecimalLocaleConverter(Locale locale) { this(locale, false); } /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.beanutils.ConversionException} * if a conversion error occurs. * * @param locale The locale * @param locPattern Indicate whether the pattern is localized or not */ public DecimalLocaleConverter(Locale locale, boolean locPattern) { this(locale, (String) null, locPattern); } /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.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 DecimalLocaleConverter(Locale locale, String pattern) { this(locale, pattern, false); } /** * Create a {@link org.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.apache.commons.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 DecimalLocaleConverter(Locale locale, String pattern, boolean locPattern) { super(locale, pattern, locPattern); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue) { this(defaultValue, false); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue, boolean locPattern) { this(defaultValue, Locale.getDefault(), locPattern); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue, Locale locale) { this(defaultValue, locale, false); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue, Locale locale, boolean locPattern) { this(defaultValue, locale, null, locPattern); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue, Locale locale, String pattern) { this(defaultValue, locale, pattern, false); } /** * Create a {@link org.apache.commons.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 DecimalLocaleConverter(Object defaultValue, Locale locale, String pattern, 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 * * @exception org.apache.commons.beanutils.ConversionException if conversion * cannot be performed successfully * @throws ParseException if an error occurs parsing a String to a Number */ protected Object parse(Object value, String pattern) throws ParseException { if (value instanceof Number) { return value; } // Note that despite the ambiguous "getInstance" name, and despite the // fact that objects returned from this method have the same toString // representation, each call to getInstance actually returns a new // object. DecimalFormat formatter = (DecimalFormat) DecimalFormat.getInstance(locale); // if some constructors default pattern to null, it makes only sense // to handle null pattern gracefully if (pattern != null) { if (locPattern) { formatter.applyLocalizedPattern(pattern); } else { formatter.applyPattern(pattern); } } else { log.debug("No pattern provided, using default."); } return formatter.parse((String) value); } }