/*
* All content copyright Terracotta, Inc., unless otherwise indicated.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terracotta.statistics.observer;
The marker interface implemented by all statistic observer classes.
A statistic observer presents methods used to update a statistic. There are
two general classes of observer implementations:
- Initial observers are called by product code in order to record the
occurrence of a product related 'event'
- Derived observers are called by other observers with then intention of
tracking higher order statistics.
/**
* The marker interface implemented by all statistic observer classes.
* <p>
* A statistic observer presents methods used to update a statistic. There are
* two general classes of observer implementations:
* <ol>
* <li>Initial observers are called by product code in order to record the
* occurrence of a product related 'event'</li>
* <li>Derived observers are called by other observers with then intention of
* tracking higher order statistics.</li>
* </ol>
*/
public interface ChainedObserver {
}