com.feilong.lib.xstream.converters.extended.ISO8601GregorianCalendarConverter Maven / Gradle / Ivy

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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.

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/*
 * Copyright (C) 2005 Joe Walnes.
 * Copyright (C) 2006, 2007, 2011, 2013, 2014, 2015, 2016, 2017, 2018 XStream Committers.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 * 
 * Created on 03. October 2005 by Joerg Schaible
 */
package com.feilong.lib.xstream.converters.extended;

import java.lang.reflect.InvocationTargetException;
import java.util.GregorianCalendar;

import com.feilong.lib.xstream.converters.SingleValueConverter;
import com.feilong.lib.xstream.converters.basic.AbstractSingleValueConverter;
import com.feilong.lib.xstream.core.JVM;

/**
 * A GregorianCalendarConverter conforming to the ISO8601 standard. The converter will always serialize the calendar
 * value in UTC and deserialize it to a value in the current default time zone.
 * 
 * @author Mauro Talevi
 * @author Jörg Schaible
 * @see ISO 8601
 * @since 1.1.3
 */
public class ISO8601GregorianCalendarConverter extends AbstractSingleValueConverter{

    private final static Class[]       EMPTY_CLASS_ARRAY  = new Class[0];

    private final static Object[]      EMPTY_OBJECT_ARRAY = new Object[0];

    private final SingleValueConverter converter;

    public ISO8601GregorianCalendarConverter(){
        SingleValueConverter svConverter = null;
        final Class type = JVM.loadClassForName(
                        JVM.isVersion(8) ? "com.feilong.lib.xstream.core.util.ISO8601JavaTimeConverter"
                                        : "com.feilong.lib.xstream.core.util.ISO8601JodaTimeConverter");
        try{
            svConverter = (SingleValueConverter) type.getDeclaredConstructor(EMPTY_CLASS_ARRAY).newInstance(EMPTY_OBJECT_ARRAY);
        }catch (final InstantiationException e){
            // ignore
        }catch (final IllegalAccessException e){
            // ignore
        }catch (final InvocationTargetException e){
            // ignore
        }catch (final NoSuchMethodException e){
            // ignore
        }
        converter = svConverter;
    }

    @Override
    public boolean canConvert(final Class type){
        return converter != null && type == GregorianCalendar.class;
    }

    @Override
    public Object fromString(final String str){
        return converter.fromString(str);
    }

    @Override
    public String toString(final Object obj){
        return converter.toString(obj);
    }
}