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comparison: src/net/fortuna/ical4j/data/CalendarParserFactory.java
src/net/fortuna/ical4j/data/CalendarParserFactory.java
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| 1 /** | |
| 2 * Copyright (c) 2012, Ben Fortuna | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * | |
| 9 * o Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * o Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * o Neither the name of Ben Fortuna nor the names of any other contributors | |
| 17 * may be used to endorse or promote products derived from this software | |
| 18 * without specific prior written permission. | |
| 19 * | |
| 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 */ | |
| 32 package net.fortuna.ical4j.data; | |
| 33 | |
| 34 import net.fortuna.ical4j.util.Configurator; | |
| 35 | |
| 36 /** | |
| 37 * <pre> | |
| 38 * $Id$ | |
| 39 * | |
| 40 * Created on 08/02/2007 | |
| 41 * </pre> | |
| 42 * | |
| 43 * Provides access to the configured {@link CalendarParser} instance. Alternative factory implementations may be | |
| 44 * specified via the following system property: | |
| 45 * | |
| 46 * <pre> | |
| 47 * net.fortuna.ical4j.parser=<factory_class_name> | |
| 48 * </pre> | |
| 49 * | |
| 50 * @author Ben Fortuna | |
| 51 */ | |
| 52 public abstract class CalendarParserFactory { | |
| 53 | |
| 54 /** | |
| 55 * The system property used to specify an alternate {@link CalendarParser} implementation. | |
| 56 */ | |
| 57 public static final String KEY_FACTORY_CLASS = "net.fortuna.ical4j.parser"; | |
| 58 | |
| 59 private static CalendarParserFactory instance; | |
| 60 static { | |
| 61 try { | |
| 62 final Class factoryClass = Class.forName( | |
| 63 Configurator.getProperty(KEY_FACTORY_CLASS)); | |
| 64 instance = (CalendarParserFactory) factoryClass.newInstance(); | |
| 65 } | |
| 66 catch (Exception e) { | |
| 67 instance = new DefaultCalendarParserFactory(); | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 /** | |
| 72 * @return a shared factory instance | |
| 73 */ | |
| 74 public static CalendarParserFactory getInstance() { | |
| 75 return instance; | |
| 76 } | |
| 77 | |
| 78 /** | |
| 79 * Returns a new instance of the configured {@link CalendarParser}. | |
| 80 * @return a calendar parser instance | |
| 81 */ | |
| 82 public abstract CalendarParser createParser(); | |
| 83 | |
| 84 } |
