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• uuid-datepath-idmapper
• 0.2
• source code
• UUIDDatePathIdMapper.java

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com.yourmediashelf.fedora.akubra.UUIDDatePathIdMapper Maven / Gradle / Ivy

/**
 * Copyright (C) 2012 MediaShelf 
 *
 * This file is part of uuid-datepath-idmapper.
 *
 * uuid-datepath-idmapper is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * uuid-datepath-idmapper is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with uuid-datepath-idmapper.  If not, see .
 */
package com.yourmediashelf.fedora.akubra;

import java.net.URI;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.akubraproject.map.IdMapper;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

import com.fasterxml.uuid.UUIDType;
import com.fasterxml.uuid.impl.UUIDUtil;

/**
 * 
An Akubra IdMapper that maps version 1 UUIDs (i.e., time-based UUIDs) to 
 * datetime-based paths.
 * 
 * 
This IdMapper should be configured to use a fallbackMapper, to handle ids 
 * which are not version 1 UUIDs.
 * 
 * @author Edwin Shin
 *
 */
public class UUIDDatePathIdMapper implements IdMapper {

	private static final String internalScheme = "file";
	private IdMapper fallbackMapper;
	private Pattern pattern;
	private DateTimeFormatter fmt;
	
	/**
	 * The number of 100-ns intervals between the UUID epoch 1582-10-15 00:00:00 
	 * and the Unix epoch 1970-01-01 00:00:00.
	 */
	private final static long NUM_100NS_INTERVALS_SINCE_UUID_EPOCH = 0x01b21dd213814000L;
	
	/**
	 * 
Convenience constructor that uses the default dateFormat and fallbackMapper.
	 * 
	 * 
Note: the default fallbackMapper ({@link TrivialIdMapper}) is probably not 
	 * what you should be using.
	 * 
	 */
	public UUIDDatePathIdMapper() {
		this(null, null);
	}
	
	/**
	 * 
Convenience constructor that uses the default fallbackMapper.
	 * 
	 * 
Note: the default fallbackMapper ({@link TrivialIdMapper}) is probably not 
	 * what you should be using.
	 * 
	 * @param dateFormat A {@link DateTimeFormat} pattern to generate the path.
	 * 
	 * @see