/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.apache.geode.cache.query;
// import java.util.*;
/**
* Provides statistics about a GemFire cache {@link Index}.
*
* @since GemFire 4.0
*/
public interface IndexStatistics {
/**
* Return the total number of times this index has been updated
*/
public long getNumUpdates();
/**
* Returns the total amount of time (in nanoseconds) spent updating this index.
*/
public long getTotalUpdateTime();
/**
* Returns the total number of times this index has been accessed by a query.
*/
public long getTotalUses();
/**
* Returns the number of keys in this index.
*/
public long getNumberOfKeys();
/**
* Returns the number of values in this index.
*/
public long getNumberOfValues();
/**
* Return the number of values for the specified key in this index.
*/
public long getNumberOfValues(Object key);
/**
* Return number of read locks taken on this index
*/
public int getReadLockCount();
/**
* Returns the number of keys in this index at the highest level
*/
public long getNumberOfMapIndexKeys();
/**
* Returns the number of bucket indexes created in the Partitioned Region
*/
public int getNumberOfBucketIndexes();
}