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jsync.io is a non-blocking, event-driven networking framework for Java
There is a newer version: 1.10.13
package io.jsync.app.core;

import com.hazelcast.core.*;
import io.jsync.shareddata.impl.SharedSet;

/**
 * Data is the central API for interacting with data in the cluster.
 * 
 * To add persistent data you must add the appropriate DataType's to the cluster.
 */
public class Data {

    private SharedSet persistentMaps = new SharedSet<>();
    private io.jsync.app.core.Cluster cluster;

    protected Data(Cluster parent) {
        if (parent == null) {
            throw new NullPointerException();
        }
        this.cluster = parent;
    }

    private HazelcastInstance hazelcast() {
        return cluster.hazelcast();
    }

    /**
     * This method returns a Hazelcast IMap from the parameters specified
     *
     * @param name       the name of the map
     * @param persistent true for persistent data
     * @return the IMap associated with the name
     */
    public IMap getMap(String name, boolean persistent) {
        String identifier = name;
        if (persistent) {
            identifier = "persistent." + name;
            if (!persistentMaps.contains(identifier)) {
                persistentMaps.add(identifier);
                // First time it was requested so we shall load it.
                //loadAll = true; // Temporary
            }
        }
        return hazelcast().getMap(identifier);
    }

    /**
     * This method returns a Hazelcast IMap from the parameters specified
     *
     * @param name the name of the IMap
     * @return the IMap associated with the name
     */
    public IMap getMap(String name) {
        return getMap(name, false);
    }

    /**
     * This method returns a Hazelcast MultiMap from the parameters specified
     *
     * @param name the name of the MultiMap
     * @return the MultiMap associated with the name
     */
    public MultiMap getMultiMap(String name) {
        return hazelcast().getMultiMap(name);
    }


    /**
     * This method returns a Hazelcast ISet from the parameters specified
     *
     * @param name the name of the ISet
     * @return the ISet associated with the name
     */
    public ISet getSet(String name) {
        return hazelcast().getSet(name);
    }

    /**
     * This method returns a Hazelcast IList from the parameters specified
     *
     * @param name the name of the IList
     * @return the IList associated with the name
     */
    public IList getList(String name) {
        return hazelcast().getList(name);
    }

    /**
     * This method returns a persistent Hazelcast IMap from the parameters specified
     *
     * @param name the name of the IMap
     * @return the IMap associated with the name
     */
    public IMap persistentMap(String name) {
        return getMap(name, true);
    }

}