singletontestcontext.java

jbpm的demo,带有流程设计

/**
 * $Source: /home/ws/rz65/CVS-Repository/WorkflowProjects/JBPM-Demo/src/test/testjbpmdemo/SingletonTestContext.java,v $
 * $Revision: 1.1 $
 * $Date: 2005/03/05 12:16:30 $
 * $Author: rz65 $
 *
 * Copyright (c) 2005 Universitaet Karlsruhe (TH) / Rechenzentrum (RZ-UNI-UKA)
 *
 * RZ-UNI-KA makes no representations or warranties about the suitability
 * of this software, either express or implied, including but not limited
 * to the implied warranties of merchantability, fitness for a particular
 * purpose, or non-infringement. RZ-UNI-KA shall not be liable for any
 * damages as a result of using, modifying or distributing this software
 * or its derivatives.
 */

package testjbpmdemo;


import java.util.Properties;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;

import java.io.File;

import jbpmdemo.logging.LoggableObject;
import jbpmdemo.logging.LoggingConfigurator;

/**
 * This is the singleton test context for all OSWFDemo test cases.
 * 
 * <p>
 * 
 * @version $Revision: 1.1 $
 * @author mailto:[e-mail]
 */

public class SingletonTestContext extends LoggableObject {

	/**
	 * The system property key for the definition of the root of the test work
	 * directories.
	 */
	public static final String SYSPROP_KEY_TEST_WORK_ROOT = "jbpmdemo.test.work.root";

	/**
	 * Hidden constructor. Clients must not create SingletonTestContext
	 * instances directly.
	 */
	private SingletonTestContext() {
		String mn = MN_INIT;
		instance = this;
		LoggingConfigurator.configure();

		// show system properties
		Properties prop = System.getProperties();
		Enumeration enum = prop.propertyNames();
		for (int i = 0; enum.hasMoreElements(); i++) {
			String name = (String) enum.nextElement();
			String value = prop.getProperty(name);
			info(mn, "System property[" + i + "]: " + name + " => " + value);
		}

		// prepare test work root
		String path = System.getProperty(SYSPROP_KEY_TEST_WORK_ROOT);
		if (path == null)
			suicide(mn, "System property not found: "
					+ SYSPROP_KEY_TEST_WORK_ROOT);
		testWorkRoot = new File(path);
		debug(mn, "test work root: " + testWorkRoot);
		if (!testWorkRoot.exists())
			suicide(mn, "Test work directory does not exist: " + testWorkRoot);
		if (!testWorkRoot.isDirectory())
			suicide(mn, "Not a directory: " + testWorkRoot);
		testWorkDirTable = new Hashtable();
	}

	private static SingletonTestContext instance = null;

	private File testWorkRoot;

	private Hashtable testWorkDirTable;

	/**
	 * Returns the singleton reference. If no instance was created before, it
	 * will now be created.
	 * 
	 * @return The reference.
	 */
	public static synchronized SingletonTestContext getInstance() {
		if (instance == null)
			new SingletonTestContext();
		return instance;
	}

	/**
	 * Returns the root directory of the test data.
	 * 
	 * @return The directory.
	 */
	public File getTestWorkRoot() {
		return testWorkRoot;
	}

	/**
	 * Returns the work directory for a given class.
	 * 
	 * @param fcqn
	 *            The fully qualified class name.
	 * @return The directory.
	 */
	public File getTestWorkDir(String fcqn) {
		String mn = "getTestWorkDir";
		File dir = (File) testWorkDirTable.get(fcqn);
		if (dir == null) {
			debug(mn, "directory not found for FCQN: " + fcqn);
			dir = testWorkRoot;
			StringTokenizer st = new StringTokenizer(fcqn, ".");
			while (st.hasMoreTokens()) {
				dir = new File(dir, st.nextToken());
			}
			testWorkDirTable.put(fcqn, dir);
			debug(mn, "directory added to table: " + dir);
		}
		if (!dir.exists()) {
			debug(mn, "directory does not exist => creating... " + dir);
			dir.mkdirs();
		}
		return dir;
	}
}