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/* * Copyright 2001-2004 The Apache Software Foundation. * * 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.enerj.apache.commons.beanutils.locale.converters; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.enerj.apache.commons.beanutils.locale.BaseLocaleConverter; import java.text.DecimalFormat; import java.text.ParseException; import java.util.Locale; /** * <p>Standard {@link org.enerj.apache.commons.beanutils.locale.LocaleConverter} * implementation that converts an incoming * locale-sensitive String into a <code>java.lang.Decimal</code> object, * optionally using a default value or throwing a * {@link org.enerj.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 static Log log = LogFactory.getLog(DecimalLocaleConverter.class); // ----------------------------------------------------------- Constructors /** * Create a {@link org.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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.enerj.apache.commons.beanutils.locale.LocaleConverter} * that will throw a {@link org.enerj.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) { this(null, locale, pattern, locPattern); } /** * Create a {@link org.enerj.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.enerj.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.enerj.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.enerj.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.enerj.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.enerj.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 * * @exception ConversionException if conversion cannot be performed * successfully */ protected Object parse(Object value, String pattern) throws ParseException { // DecimalFormat is not thread safe so best to construct one each time 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.warn("No pattern provided, using default."); } return formatter.parse((String) value); } }