staticlogger.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

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package org.apache.tester;


import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;


/**
 * Logger that uses a static message buffer to facilitate intra-web-app
 * recording and retrieval of log messages.
 *
 * @author Craig R. McClanahan
 * @version $Revision: 1.1.1.1 $ $Date: 2002/07/18 16:47:28 $
 */

public class StaticLogger {


    // ----------------------------------------------------------- Constructors


    // ------------------------------------------------------- Static Variables


    /**
     * The set of messages that have been logged.
     */
    protected static ArrayList messages = new ArrayList();


    /**
     * The index of the next message that will be retrieved by a read() call.
     */
    protected static int position = 0;


    // --------------------------------------------------------- Public Methods


    /**
     * Return the next message that has been logged, or <code>null</code>
     * if there are no more messages.
     */
    public static String read() {

        synchronized (messages) {
            if (position < messages.size())
                return ((String) messages.get(position++));
            else
                return (null);
        }

    }


    /**
     * Reset the messages buffer and position.
     */
    public static void reset() {

        synchronized (messages) {
            messages.clear();
            position = 0;
        }

    }


    /**
     * Write a new message to the end of the messages buffer.
     *
     * @param message The message to be added
     */
    public static void write(String message) {

        synchronized (messages) {
            messages.add(message);
        }

    }


}