Examples of com.hazelcast.map.MapServiceContext

com.hazelcast.map.MapServiceContext
Context which is needed by a map service.
Shared instances, configurations of all maps can be reached over this context.
Also this context provides some support methods which are used in map operations and {@link RecordStore} implementations.For example all {@link com.hazelcast.map.PartitionContainer} and {@link com.hazelcast.map.MapContainer} instancescan also be reached by using this interface.
It is also responsible for providing methods which are used by lower layers of Hazelcast and exposed on {@link com.hazelcast.map.MapService}.
@see com.hazelcast.map.MapManagedService

    }


    @Override
    public void run() {
        final long now = Clock.currentTimeMillis();
        final MapServiceContext mapServiceContext = this.mapServiceContext;
        final NodeEngine nodeEngine = mapServiceContext.getNodeEngine();
        final ClusterService clusterService = nodeEngine.getClusterService();
        final InternalPartitionService partitionService = nodeEngine.getPartitionService();
        final Address thisAddress = clusterService.getThisAddress();
        final int partitionCount = partitionService.getPartitionCount();
        Map<Integer, Integer> partitionToEntryCountHolder = Collections.emptyMap();

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        TxnValueWrapper currentValue = txMap.get(key);
        if (currentValue != null) {
            return checkIfRemoved(currentValue);
        }
        final MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        return mapServiceContext.toObject(getInternal(mapServiceContext.toData(key, partitionStrategy)));
    }

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        TxnValueWrapper currentValue = txMap.get(key);
        if (currentValue != null) {
            return checkIfRemoved(currentValue);
        }
        final MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        Data dataKey = mapServiceContext.toData(key, partitionStrategy);
        return mapServiceContext.toObject(getForUpdateInternal(dataKey));
    }

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    }


    public Object put(Object key, Object value) {
        checkTransactionState();
        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        final Object valueBeforeTxn = mapServiceContext.toObject(putInternal(mapServiceContext.toData(key, partitionStrategy),
                mapServiceContext.toData(value)));
        TxnValueWrapper currentValue = txMap.get(key);
        if (value != null) {
            TxnValueWrapper wrapper = valueBeforeTxn == null
                    ? new TxnValueWrapper(value, TxnValueWrapper.Type.NEW)
                    : new TxnValueWrapper(value, TxnValueWrapper.Type.UPDATED);

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    }


    public Object put(Object key, Object value, long ttl, TimeUnit timeUnit) {
        checkTransactionState();
        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        final Object valueBeforeTxn = mapServiceContext.toObject(putInternal(mapServiceContext.toData(key, partitionStrategy),
                mapServiceContext.toData(value), ttl, timeUnit));
        TxnValueWrapper currentValue = txMap.get(key);
        if (value != null) {
            TxnValueWrapper wrapper = valueBeforeTxn == null
                    ? new TxnValueWrapper(value, TxnValueWrapper.Type.NEW)
                    : new TxnValueWrapper(value, TxnValueWrapper.Type.UPDATED);

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    }


    public void set(Object key, Object value) {
        checkTransactionState();
        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        final Data dataBeforeTxn = putInternal(mapServiceContext.toData(key, partitionStrategy), mapServiceContext.toData(value));
        if (value != null) {
            TxnValueWrapper wrapper = dataBeforeTxn == null
                    ? new TxnValueWrapper(value, TxnValueWrapper.Type.NEW)
                    : new TxnValueWrapper(value, TxnValueWrapper.Type.UPDATED);
            txMap.put(key, wrapper);

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    public Object putIfAbsent(Object key, Object value) {
        checkTransactionState();
        TxnValueWrapper wrapper = txMap.get(key);
        boolean haveTxnPast = wrapper != null;
        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        if (haveTxnPast) {
            if (wrapper.type != TxnValueWrapper.Type.REMOVED) {
                return wrapper.value;
            }
            putInternal(mapServiceContext.toData(key, partitionStrategy), mapServiceContext.toData(value));
            txMap.put(key, new TxnValueWrapper(value, TxnValueWrapper.Type.NEW));
            return null;
        } else {
            Data oldValue
                    = putIfAbsentInternal(mapServiceContext.toData(key, partitionStrategy),
                    mapServiceContext.toData(value));
            if (oldValue == null) {
                txMap.put(key, new TxnValueWrapper(value, TxnValueWrapper.Type.NEW));
            }
            return mapServiceContext.toObject(oldValue);
        }
    }

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        checkTransactionState();
        TxnValueWrapper wrapper = txMap.get(key);
        boolean haveTxnPast = wrapper != null;


        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        if (haveTxnPast) {
            if (wrapper.type == TxnValueWrapper.Type.REMOVED) {
                return null;
            }
            putInternal(mapServiceContext.toData(key, partitionStrategy), mapServiceContext.toData(value));
            txMap.put(key, new TxnValueWrapper(value, TxnValueWrapper.Type.UPDATED));
            return wrapper.value;
        } else {
            Data oldValue = replaceInternal(mapServiceContext.toData(key, partitionStrategy), mapServiceContext.toData(value));
            if (oldValue != null) {
                txMap.put(key, new TxnValueWrapper(value, TxnValueWrapper.Type.UPDATED));
            }
            return mapServiceContext.toObject(oldValue);
        }
    }

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        checkTransactionState();
        TxnValueWrapper wrapper = txMap.get(key);
        boolean haveTxnPast = wrapper != null;


        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        if (haveTxnPast) {
            if (!wrapper.value.equals(oldValue)) {
                return false;
            }
            putInternal(mapServiceContext.toData(key, partitionStrategy), mapServiceContext.toData(newValue));
            txMap.put(key, new TxnValueWrapper(wrapper.value, TxnValueWrapper.Type.UPDATED));
            return true;
        } else {
            boolean success = replaceIfSameInternal(mapServiceContext.toData(key),
                    mapServiceContext.toData(oldValue), mapServiceContext.toData(newValue));
            if (success) {
                txMap.put(key, new TxnValueWrapper(newValue, TxnValueWrapper.Type.UPDATED));
            }
            return success;
        }

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    public boolean remove(Object key, Object value) {
        checkTransactionState();
        TxnValueWrapper wrapper = txMap.get(key);


        MapService service = getService();
        final MapServiceContext mapServiceContext = service.getMapServiceContext();
        if (wrapper != null && !mapServiceContext.compare(name, wrapper.value, value)) {
            return false;
        }
        boolean removed = removeIfSameInternal(mapServiceContext.toData(key, partitionStrategy), value);
        if (removed) {
            txMap.put(key, new TxnValueWrapper(value, TxnValueWrapper.Type.REMOVED));
        }
        return removed;
    }

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