org.glassfish.external.statistics.StringStatistic Maven / Gradle / Ivy
/*
* Copyright (c) 2009, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.glassfish.external.statistics;
/**
* Custom statistic type created for the Sun ONE Application Server.
* The goal is to be able to represent changing attribute values that are strings
* in the form of Statistics. Semantically, it is analogous to a {@link CountStatistic},
* the only difference being in the value that is returned. Unlike a CountStatistic
* (which always is unidirectional), this Statistic type is not having any
* specified direction, simply because there is no natural order. An example
* of the values that an instance of this statistic type can assume is: A State
* Statistic which can have "CONNECTED, CLOSED, DISCONNECTED" as the permissible
* values and the current value can be any one of them (and them only).
* The permissible values are upto a particular implementation.
*/
public interface StringStatistic extends Statistic {
/**
* Returns the String value of the statistic
*/
String getCurrent();
}