RemotePIDGenerator.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.pidgen;

import java.util.List;

import org.apache.log4j.Logger;

import edu.unc.lib.dl.fedora.FedoraException;
import edu.unc.lib.dl.fedora.ManagementClient;
import edu.unc.lib.dl.fedora.PID;

/**
 * PIDGenerator that uses a remote Fedora instance to generate PIDs.
 * 
 * http://localhost:8080/fedora/management/getNextPID?numPIDs=10&namespace=nara&xml=true
 */
public class RemotePIDGenerator implements PIDGenerator {
	private ManagementClient managementClient;

	private static final Logger logger = Logger.getLogger(RemotePIDGenerator.class.getName());

	private String namespace;

	public RemotePIDGenerator() {
	}

	public PID getNextPID() {
		return getNextPIDs(1).get(0);
	}

	public List<PID> getNextPIDs(int howMany) {
		if (logger.isDebugEnabled()) {
			if (namespace != null) {
				logger.debug("Using namespace '" + namespace + "'");
			} else {
				logger.debug("No namespace provided; will use default of server");
			}
		}
		try {
			return managementClient.getNextPID(howMany, namespace);
		} catch (FedoraException e) {
			throw new Error("Cannot retrieve PID from Fedora service", e);
		}
	}

	public ManagementClient getManagementClient() {
		return managementClient;
	}

	public void setManagementClient(ManagementClient managementClient) {
		this.managementClient = managementClient;
	}

	public String getNamespace() {
		return namespace;
	}

	public void setNamespace(String namespace) {
		this.namespace = namespace;
	}

}