com.hazelcast.map.impl.querycache.utils.QueryCacheUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.map.impl.querycache.utils;
import com.hazelcast.map.impl.querycache.QueryCacheContext;
import com.hazelcast.map.impl.querycache.accumulator.Accumulator;
import com.hazelcast.map.impl.querycache.publisher.MapPublisherRegistry;
import com.hazelcast.map.impl.querycache.publisher.PartitionAccumulatorRegistry;
import com.hazelcast.map.impl.querycache.publisher.PublisherContext;
import com.hazelcast.map.impl.querycache.publisher.PublisherRegistry;
import java.util.Collections;
import java.util.Map;
/**
* Various utility methods used in order to easily access {@code QueryCacheContext} internals.
*/
public final class QueryCacheUtil {
private QueryCacheUtil() {
}
/**
* Returns accumulators of a {@code QueryCache}.
*/
public static Map getAccumulators(QueryCacheContext context, String mapName, String cacheId) {
PartitionAccumulatorRegistry partitionAccumulatorRegistry = getAccumulatorRegistryOrNull(context, mapName, cacheId);
if (partitionAccumulatorRegistry == null) {
return Collections.emptyMap();
}
return partitionAccumulatorRegistry.getAll();
}
/**
* Returns {@code PartitionAccumulatorRegistry} of a {@code QueryCache}.
*
* @see PartitionAccumulatorRegistry
*/
public static PartitionAccumulatorRegistry getAccumulatorRegistryOrNull(QueryCacheContext context,
String mapName, String cacheId) {
PublisherContext publisherContext = context.getPublisherContext();
MapPublisherRegistry mapPublisherRegistry = publisherContext.getMapPublisherRegistry();
PublisherRegistry publisherRegistry = mapPublisherRegistry.getOrNull(mapName);
if (publisherRegistry == null) {
return null;
}
return publisherRegistry.getOrNull(cacheId);
}
/**
* Returns {@code Accumulator} of a partition.
*
* @see Accumulator
*/
public static Accumulator getAccumulatorOrNull(QueryCacheContext context,
String mapName, String cacheId, int partitionId) {
PartitionAccumulatorRegistry accumulatorRegistry = getAccumulatorRegistryOrNull(context, mapName, cacheId);
if (accumulatorRegistry == null) {
return null;
}
return accumulatorRegistry.getOrNull(partitionId);
}
}