Examples of com.hazelcast.core.MapStore

com.hazelcast.core.MapStore
Hazelcast distributed map implementation is an in-memory data store but it can be backed by any type of data store such as RDBMS, OODBMS, NOSQL or simply a file based data store.
IMap.put(key, value) normally stores the entry into JVM's memory. If MapStore implementation is provided then Hazelcast will also call the MapStore implementation to store the entry into a user defined storage such as RDBMS or some other external storage system. It is completely up to the user how the key-value will be stored or deleted.
Same goes for IMap.remove(key)
Store implementation can be called synchronously (write-through) or asynchronously (write-behind) depending on the configuration.


    public MapStoreWrapper(Object impl, String mapName, boolean enabled) {
        this.impl = impl;
        this.mapName = mapName;
        MapLoader loader = null;
        MapStore store = null;
        if (impl instanceof MapStore) {
            store = (MapStore) impl;
        }
        if (impl instanceof MapLoader) {
            loader = (MapLoader) impl;

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        evictAllInternal();
    }


    @Override
    public void loadAll(boolean replaceExistingValues) {
        final MapStore store = getMapStore();
        if (store == null) {
            throw new NullPointerException("First you should configure a map store");
        }


        final Set keys = store.loadAllKeys();
        if (keys == null || keys.isEmpty()) {
            return;
        }
        loadAll(keys, replaceExistingValues);
    }

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    public MapStoreWrapper(Object impl, String mapName, boolean enabled) {
        this.impl = impl;
        this.mapName = mapName;
        MapLoader loader = null;
        MapStore store = null;
        if (impl instanceof MapStore) {
            store = (MapStore) impl;
        }
        if (impl instanceof MapLoader) {
            loader = (MapLoader) impl;

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    public MapStoreWrapper(Object impl, String mapName, boolean enabled) {
        this.impl = impl;
        this.mapName = mapName;
        MapLoader loader = null;
        MapStore store = null;
        if (impl instanceof MapStore) {
            store = (MapStore) impl;
        }
        if (impl instanceof MapLoader) {
            loader = (MapLoader) impl;

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    @Test
    public void updates_on_same_key_when_in_memory_format_is_object() throws Exception {
        final long customerId = 0L;
        final int numberOfSubscriptions = 1000;
        final MapStore mapStore = new DataStore();
        final IMap<Long, Customer> map = createMap(mapStore);


        addCustomer(map, customerId);


        // add subscriptions.

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        evictAllInternal();
    }


    @Override
    public void loadAll(boolean replaceExistingValues) {
        final MapStore store = getMapStore();
        if (store == null) {
            throw new NullPointerException("First you should configure a map store");
        }


        final Set keys = store.loadAllKeys();
        if (keys == null || keys.isEmpty()) {
            return;
        }
        loadAll(keys, replaceExistingValues);
    }

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    @Test(timeout = 120000)
    public void testIssue1115EnablingMapstoreMutatingValue() throws InterruptedException {
        Config cfg = new Config();
        String mapName = "testIssue1115";
        MapStore mapStore = new ProcessingStore();
        MapStoreConfig mapStoreConfig = new MapStoreConfig();
        mapStoreConfig.setEnabled(true);
        mapStoreConfig.setImplementation(mapStore);
        cfg.getMapConfig(mapName).setMapStoreConfig(mapStoreConfig);
        TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);

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Related Classes of com.hazelcast.core.MapStore

com.hazelcast.map.impl.MapStoreWrapper

com.hazelcast.map.impl.proxy.MapProxyImpl

com.hazelcast.map.mapstore.MapStoreTest

com.hazelcast.map.mapstore.writebehind.WriteBehindWithEntryProcessorTest

com.hazelcast.map.MapStoreWrapper

com.hazelcast.map.proxy.MapProxyImpl

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