001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.mina.integration.beans;
021
022import java.beans.PropertyEditor;
023import java.text.DateFormat;
024import java.text.ParseException;
025import java.text.SimpleDateFormat;
026import java.util.Date;
027import java.util.Locale;
028import java.util.regex.Pattern;
029
030/**
031 * A {@link PropertyEditor} which converts a {@link String} into
032 * a {@link Date} and vice versa.
033 *
034 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
035 */
036public class DateEditor extends AbstractPropertyEditor {
037    private static final Pattern MILLIS = Pattern.compile("[0-9][0-9]*");
038
039    private final DateFormat[] formats = new DateFormat[] {
040            new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.ENGLISH),
041            new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z", Locale.ENGLISH),
042            new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH),
043            new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH), new SimpleDateFormat("yyyy-MM", Locale.ENGLISH),
044            new SimpleDateFormat("yyyy", Locale.ENGLISH), };
045
046    public DateEditor() {
047        for (DateFormat f : formats) {
048            f.setLenient(true);
049        }
050    }
051
052    @Override
053    protected String toText(Object value) {
054        if (value instanceof Number) {
055            long time = ((Number) value).longValue();
056            if (time <= 0) {
057                return null;
058            }
059            value = new Date(time);
060        }
061        return formats[0].format((Date) value);
062    }
063
064    @Override
065    protected Object toValue(String text) throws IllegalArgumentException {
066        if (MILLIS.matcher(text).matches()) {
067            long time = Long.parseLong(text);
068            if (time <= 0) {
069                return null;
070            }
071            return new Date(time);
072        }
073
074        for (DateFormat f : formats) {
075            try {
076                return f.parse(text);
077            } catch (ParseException e) {
078            }
079        }
080
081        throw new IllegalArgumentException("Wrong date: " + text);
082    }
083}