org.greencheek.related.indexing.util.JodaUTCCurrentDateFormatter Maven / Gradle / Ivy

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/*
 *
 *  * Licensed to Relateit under one or more contributor
 *  * license agreements. See the NOTICE file distributed with
 *  * this work for additional information regarding copyright
 *  * ownership. Relateit 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.
 *
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package org.greencheek.related.indexing.util;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.*;

import java.io.IOException;


/**
 * Created with IntelliJ IDEA.
 * User: dominictootell
 * Date: 01/06/2013
 * Time: 17:59
 * To change this template use File | Settings | File Templates.
 */
public class JodaUTCCurrentDateFormatter implements UTCCurrentDateFormatter {

    private final DateTimeParser[] parsers = {
            ISODateTimeFormat.dateTimeParser().getParser(),
            ISODateTimeFormat.basicDateTime().getParser(),
            ISODateTimeFormat.basicDateTimeNoMillis().getParser(),
            ISODateTimeFormat.basicDate().getParser()
    };
    private final DateTimeFormatter formatterUTC = new DateTimeFormatterBuilder().append( null, parsers ).toFormatter().withZoneUTC();
    private final DateTimeFormatter formatter = ISODateTimeFormat.date();

    @Override
    public String getCurrentDay() {
        DateTime dt = new DateTime();
        DateTime utc =dt.withZone(DateTimeZone.UTC);
        StringBuilderWriter b = new StringBuilderWriter(10);
        try {
             formatter.printTo(b, utc);
        } catch (IOException e) {
            // this does not get thrown by the StringBuilder Appendable interface.
        }
        return b.toString();
    }

    @Override
    public String parseToDate(String dateAndOrTime) {
        StringBuilderWriter b = new StringBuilderWriter(10);
        try {
            formatter.printTo(b,formatterUTC.parseDateTime(dateAndOrTime));
        } catch(IOException e) {
            // this does not get thrown by the StringBuilder Appendable interface.
        }
        return b.toString();
    }

    public static void main(String[] args) {
        System.out.println(new JodaUTCCurrentDateFormatter().getCurrentDay());
    }

}