diff -r 000000000000 -r fb9019fb1bf7 src/net/fortuna/ical4j/data/CalendarParserFactory.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/net/fortuna/ical4j/data/CalendarParserFactory.java Tue Feb 10 18:12:00 2015 +0100 @@ -0,0 +1,84 @@ +/** + * Copyright (c) 2012, Ben Fortuna + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * o Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * o Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * o Neither the name of Ben Fortuna nor the names of any other contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package net.fortuna.ical4j.data; + +import net.fortuna.ical4j.util.Configurator; + +/** + *
+ * $Id$ + * + * Created on 08/02/2007 + *+ * + * Provides access to the configured {@link CalendarParser} instance. Alternative factory implementations may be + * specified via the following system property: + * + *
+ * net.fortuna.ical4j.parser=<factory_class_name> + *+ * + * @author Ben Fortuna + */ +public abstract class CalendarParserFactory { + + /** + * The system property used to specify an alternate {@link CalendarParser} implementation. + */ + public static final String KEY_FACTORY_CLASS = "net.fortuna.ical4j.parser"; + + private static CalendarParserFactory instance; + static { + try { + final Class factoryClass = Class.forName( + Configurator.getProperty(KEY_FACTORY_CLASS)); + instance = (CalendarParserFactory) factoryClass.newInstance(); + } + catch (Exception e) { + instance = new DefaultCalendarParserFactory(); + } + } + + /** + * @return a shared factory instance + */ + public static CalendarParserFactory getInstance() { + return instance; + } + + /** + * Returns a new instance of the configured {@link CalendarParser}. + * @return a calendar parser instance + */ + public abstract CalendarParser createParser(); + +}