| /* |
| * 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; |
| |
| |
| /** |
| * 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 |
| */ |
| long getNumUpdates(); |
| |
| /** |
| * Returns the total amount of time (in nanoseconds) spent updating this index. |
| */ |
| long getTotalUpdateTime(); |
| |
| /** |
| * Returns the total number of times this index has been accessed by a query. |
| */ |
| long getTotalUses(); |
| |
| /** |
| * Returns the number of keys in this index. |
| */ |
| long getNumberOfKeys(); |
| |
| /** |
| * Returns the number of values in this index. |
| */ |
| long getNumberOfValues(); |
| |
| |
| /** |
| * Return the number of values for the specified key in this index. |
| */ |
| long getNumberOfValues(Object key); |
| |
| |
| /** |
| * Return number of read locks taken on this index |
| */ |
| int getReadLockCount(); |
| |
| /** |
| * Returns the number of keys in this index at the highest level |
| */ |
| long getNumberOfMapIndexKeys(); |
| |
| /** |
| * Returns the number of bucket indexes created in the Partitioned Region |
| */ |
| int getNumberOfBucketIndexes(); |
| } |