dk.dtu.imm.esculapauml.core.tests.uml.LoggingTest.java Source code

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Here is the source code for dk.dtu.imm.esculapauml.core.tests.uml.LoggingTest.java

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/******************************************************************************
 * Copyright (c) 2011, 2012 Piotr J. Puczynski (DTU Informatics).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Piotr J. Puczynski (DTU Informatics) - initial API and implementation 
 *    
 ****************************************************************************/
package dk.dtu.imm.esculapauml.core.tests.uml;

import java.util.Enumeration;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

import dk.dtu.imm.esculapauml.core.Activator;
import dk.dtu.imm.esculapauml.core.logging.EsculapaUMLLog4JLoger;

/**
 * Abstract class that helps prepare logger for some use cases that need it.
 * 
 * @author Piotr J. Puczynski
 * 
 */
public abstract class LoggingTest {
    private static boolean configured = isConfigured();

    public LoggingTest() {
        if (!configured) {
            System.setProperty("org.apache.commons.logging.log", EsculapaUMLLog4JLoger.class.getName());
            PropertyConfigurator.configure(Activator.LOG_PROPERTIES_FILE);
            configured = true;
        }
    }

    /**
     * Returns true if it appears that log4j have been previously configured.
     * This code checks to see if there are any appenders defined for log4j
     * which is the definitive way to tell if log4j is already initialized
     * 
     * @return
     */
    private static boolean isConfigured() {
        @SuppressWarnings("rawtypes")
        Enumeration appenders = Logger.getLogger("dk.dtu.imm.esculapauml").getAllAppenders();
        return appenders.hasMoreElements();
    }

}