/*
 * Copyright Terracotta, Inc.
 *
 * 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.ehcache.core.statistics;

import java.util.Collection;

public interface SourceStatistic<T extends ChainedObserver> {

  
Register the given Observer to be called by this SourceStatistic
Params:
  • derived – statistic to be registered
/** * Register the given {@code Observer} to be called by this {@code SourceStatistic} * * @param derived statistic to be registered */
void addDerivedStatistic(T derived);
Remove the given registered Observer from this SourceStatistic.
Params:
  • derived – statistic to be removed
/** * Remove the given registered {@code Observer} from this {@code SourceStatistic}. * * @param derived statistic to be removed */
void removeDerivedStatistic(T derived);
Retrieve all registered statistics.
Returns:an unmodifiable collection of all derived statistics
/** * Retrieve all registered statistics. * * @return an unmodifiable collection of all derived statistics */
Collection<T> getDerivedStatistics(); }