DatastreamPID.java

/**
 * Copyright 2008 The University of North Carolina at Chapel Hill
 *
 * Licensed 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.
 */
package edu.unc.lib.dl.fedora;

/**
 * Datastream aware PID object
 * 
 * @author bbpennel
 *
 */
public class DatastreamPID extends PID {
	private static final long serialVersionUID = -668408790779214575L;
	private String datastream;
	
	public DatastreamPID(String pid) {
		super(pid);
		
		datastream = null;
		
		int index = this.pid.indexOf('/');
		if (index != -1){
			if (index != this.pid.length() - 1)
				this.datastream = this.pid.substring(index + 1);
			this.pid =  this.pid.substring(0, index);
		}
	}

	public String getDatastream() {
		return datastream;
	}
	
	public String getDatastreamURI() {
		if (datastream == null)
			return getURI();
		return getURI() + "/" + datastream;
	}
}