com.hazelcast.map.impl.MapListenerFlagOperator Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, 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;
import com.hazelcast.core.EntryEventType;
/**
* Contains helper methods to set bit flags of implemented listener interfaces
* of a {@link com.hazelcast.map.listener.MapListener MapListener}.
*/
public final class MapListenerFlagOperator {
/**
* Sets all listener flags. Used to be notified for all events. No filtering.
*/
public static final int SET_ALL_LISTENER_FLAGS = setAndGetAllListenerFlags();
private MapListenerFlagOperator() {
}
/**
* Sets and gets flags of implemented listener interfaces of a {@link com.hazelcast.map.listener.MapListener MapListener}.
*/
public static int setAndGetListenerFlags(ListenerAdapter listenerAdapter) {
InternalMapListenerAdapter internalMapListenerAdapter = (InternalMapListenerAdapter) listenerAdapter;
ListenerAdapter[] listenerAdapters = internalMapListenerAdapter.getListenerAdapters();
EntryEventType[] values = EntryEventType.values();
int listenerFlags = 0;
for (EntryEventType eventType : values) {
ListenerAdapter definedAdapter = listenerAdapters[eventType.ordinal()];
if (definedAdapter != null) {
listenerFlags = listenerFlags | eventType.getType();
}
}
return listenerFlags;
}
/**
* Sets and gets all listener flags.
*/
private static int setAndGetAllListenerFlags() {
int listenerFlags = 0;
EntryEventType[] values = EntryEventType.values();
for (EntryEventType eventType : values) {
listenerFlags = listenerFlags | eventType.getType();
}
return listenerFlags;
}
}