net.sf.jasperreports.engine.util.JRDateLocaleConverter.java Source code

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Here is the source code for net.sf.jasperreports.engine.util.JRDateLocaleConverter.java

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/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JasperReports is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.jasperreports.engine.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Locale;
import java.util.TimeZone;

import org.apache.commons.beanutils.locale.converters.DateLocaleConverter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A Converter class dedicated for the java.util.Date type.
 * <p/>
 * In order to obtain a java.util.Date object from a given String, a JRJavaUtilDateConverter
 * object should be instantiated and it's inherited convert() method should be called. The 
 * final result is provided by the JRJavaUtilDateConverter's parse() invoked method.
 *  <p/>
 * If if any of constructor arguments is null, default values will be provided.
 *  <p/>
 * @see org.apache.commons.beanutils.locale.converters.DateLocaleConverter
 * @author szaharia
 */

public class JRDateLocaleConverter extends DateLocaleConverter {

    private static Log log = LogFactory.getLog(DateLocaleConverter.class);

    // holds the timezone's ID
    private TimeZone timeZone;

    /**
     *
     */
    public JRDateLocaleConverter(TimeZone timeZone) {
        super();

        this.timeZone = timeZone;
    }

    @Override
    protected Object parse(Object value, String pattern) throws ParseException {
        SimpleDateFormat formatter = getFormatter(pattern, locale);
        if (pattern != null) {
            if (locPattern) {
                formatter.applyLocalizedPattern(pattern);
            } else {
                formatter.applyPattern(pattern);
            }
        }
        return formatter.parse((String) value);
    }

    /**
     *
     */
    private SimpleDateFormat getFormatter(String pattern, Locale locale) {
        if (pattern == null) {
            pattern = locPattern ? new SimpleDateFormat().toLocalizedPattern() : new SimpleDateFormat().toPattern();
            log.warn("Null pattern was provided, defaulting to: " + pattern);
        }
        SimpleDateFormat format = new SimpleDateFormat(pattern, locale);
        if (timeZone != null) {
            format.setTimeZone(timeZone);
        }
        format.setLenient(isLenient());
        return format;
    }

}