com.hazelcast.map.impl.querycache.publisher.PartitionAccumulatorRegistry Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, 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.publisher;
import com.hazelcast.map.impl.query.QueryEventFilter;
import com.hazelcast.map.impl.querycache.Registry;
import com.hazelcast.map.impl.querycache.accumulator.Accumulator;
import com.hazelcast.map.impl.querycache.accumulator.AccumulatorInfo;
import com.hazelcast.query.Predicate;
import com.hazelcast.spi.EventFilter;
import com.hazelcast.util.ConcurrencyUtil;
import com.hazelcast.util.ConstructorFunction;
import java.util.Collections;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* Registry of mappings like {@code partitionId} to {@code Accumulator}.
* Holds all partition accumulators of a {@link com.hazelcast.map.QueryCache QueryCache}.
*
* @see Accumulator
*/
public class PartitionAccumulatorRegistry implements Registry {
private final EventFilter eventFilter;
private final AccumulatorInfo info;
private final ConcurrentMap accumulators;
private final ConstructorFunction accumulatorConstructor;
/**
* UUID of subscriber client/node.
*/
private volatile String uuid;
public PartitionAccumulatorRegistry(AccumulatorInfo info,
ConstructorFunction accumulatorConstructor) {
this.info = info;
this.eventFilter = createEventFilter();
this.accumulatorConstructor = accumulatorConstructor;
this.accumulators = new ConcurrentHashMap();
}
private EventFilter createEventFilter() {
boolean includeValue = info.isIncludeValue();
Predicate predicate = info.getPredicate();
return new QueryEventFilter(includeValue, null, predicate);
}
@Override
public Accumulator getOrCreate(Integer partitionId) {
return ConcurrencyUtil.getOrPutIfAbsent(accumulators, partitionId, accumulatorConstructor);
}
@Override
public Accumulator getOrNull(Integer partitionId) {
return accumulators.get(partitionId);
}
@Override
public Map getAll() {
return Collections.unmodifiableMap(accumulators);
}
@Override
public Accumulator remove(Integer id) {
return accumulators.remove(id);
}
public EventFilter getEventFilter() {
return eventFilter;
}
public AccumulatorInfo getInfo() {
return info;
}
public String getUuid() {
return uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
}