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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package com.sun.enterprise.admin.monitor.stats;

import org.glassfish.j2ee.statistics.Stats;
import org.glassfish.j2ee.statistics.CountStatistic;

/** 
 * Interface for querying web module statistics.
 */
public interface WebModuleStats extends Stats {

    /**
     * Gets the number of JSPs that have been loaded in the web module
     * associated with this WebModuleStats.
     *.
     * @return Number of JSPs that have been loaded
     */
    public CountStatistic getJspCount();

    /**
     * Gets the number of JSPs that have been reloaded in the web module
     * associated with this WebModuleStats
     *.
     * @return Number of JSPs that have been reloaded
     */
    public CountStatistic getJspReloadCount();

    /**
     * Gets the number of errors that were triggered by JSP invocations.
     *.
     * @return Number of errors triggered by JSP invocations
     */
    public CountStatistic getJspErrorCount();

    /**
     * Gets the total number of sessions that have been created for the web
     * module associated with this WebModuleStats.
     *.
     * @return Total number of sessions created
     */
    public CountStatistic getSessionsTotal();

    /**
     * Gets the number of currently active sessions for the web
     * module associated with this WebModuleStats.
     *.
     * @return Number of currently active sessions
     */
    public CountStatistic getActiveSessionsCurrent();

    /**
     * Gets the maximum number of concurrently active sessions for the web
     * module associated with this WebModuleStats.
     *
     * @return Maximum number of concurrently active sessions
     */
    public CountStatistic getActiveSessionsHigh();

    /**
     * Gets the total number of rejected sessions for the web
     * module associated with this WebModuleStats.
     *
     * This is the number of sessions that were not created because the
     * maximum allowed number of sessions were active.
     *.
     * @return Total number of rejected sessions
     */
    public CountStatistic getRejectedSessionsTotal();

    /**
     * Gets the total number of expired sessions for the web
     * module associated with this WebModuleStats.
     *.
     * @return Total number of expired sessions
     */
    public CountStatistic getExpiredSessionsTotal();

    /**
     * Gets the cumulative processing times of all servlets in the web module
     * associated with this WebModuleStats.
     *
     * @return Cumulative processing times of all servlets in the web module
     * associated with this WebModuleStats
     */
    public CountStatistic getServletProcessingTimes();

    /**
     * Returns comma-separated list of all sessions currently active in the web
     * module associated with this WebModuleStats.
     *
     * @return Comma-separated list of all sessions currently active in the
     * web module associated with this WebModuleStats
     */
    public StringStatistic getSessions();

    /**
     * Resets this WebModuleStats.
     */
    public void reset();
        
}