0.8.1-rc1/resource/src/main/java/org/apache/oodt/cas/resource/noderepo/XmlNodeRepositoryFactory.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.oodt.cas.resource.noderepo;

//OODT imports
import org.apache.oodt.cas.metadata.util.PathUtils;

//JDK imports
import java.util.Arrays;

/**
 * 
 * @author woollard
 * @author bfoster
 * @version $Revision$
 * 
 * <p>
 * The XML Node Repository Factory interface.
 * </p>
 */
public class XmlNodeRepositoryFactory implements NodeRepositoryFactory {

	/*
	 * (non-Javadoc)
	 * @see gov.nasa.jpl.oodt.cas.resource.nodes.NodeRepositoryFactory#createNodeRepository()
	 */
	public XmlNodeRepository createNodeRepository() {
		String nodesDirUris = System
				.getProperty("org.apache.oodt.cas.resource.nodes.dirs");

		if (nodesDirUris != null) {
			/* do env var replacement */
			nodesDirUris = PathUtils.replaceEnvVariables(nodesDirUris);
			String[] dirUris = nodesDirUris.split(",");
			return new XmlNodeRepository(Arrays.asList(dirUris));
		}else {
			return null;
		}
	}

}