org.apache.clerezza.rdf.mulgara.storage/src/test/java/org/apache/clerezza/rdf/mulgara/storage/MulgaraGraphTestSupport.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.clerezza.rdf.mulgara.storage;

import java.io.File;

/**
 * Class that supports Mulgara graph tests.
 *
 * @author thr, mir
 */
public class MulgaraGraphTestSupport {

	/**
	 * Sets up a directory for <code>MulgaraMGraph</code>s.
	 */
	public static void setupDirectory(File directory) {
		directory.mkdirs();
		cleanDirectory(directory);
	}

	/**
	 * Remove the directory of <code>MulgaraMGraph</code>s.
	 */
	public static void removeDirectory(File directory) {
		delete(directory);
	}

	/**
	 * Cleans the content of the specified directory recursively.
	 * @param dir  Abstract path denoting the directory to clean.
	 */
	private static void cleanDirectory(File dir) {
		File[] files = dir.listFiles();
		if (files != null && files.length > 0) {
			for (File file : files) {
				delete(file);
			}
		}
	}

	/**
	 * Deletes the specified file or directory.
	 * @param file  Abstract path denoting the file or directory to clean.
	 */
	private static void delete(File file) {
		if (file.isDirectory()) {
			cleanDirectory(file);
		}
		file.delete();
	}
}