com.maxifier.mxcache.impl.caches.batch.MapValueStrategy Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mxcache-runtime Show documentation

Constains all classes necessary for launching a MxCache-instrumentated application

There is a newer version: 2.6.9

/*
 * Copyright (c) 2008-2014 Maxifier Ltd. All Rights Reserved.
 */
package com.maxifier.mxcache.impl.caches.batch;

import gnu.trove.map.hash.THashMap;

import java.util.*;

/**
 * @author Alexander Kochurov ([email protected])
 */
final class MapValueStrategy implements ValueStrategy, V, Void> {
    private MapValueStrategy() {}

    private static final MapValueStrategy INSTANCE = new MapValueStrategy();

    public static  MapValueStrategy getInstance() {
        //noinspection unchecked
        return INSTANCE;
    }

    @Override
    public Map compose(Map knownValue, Map calculated, Void composition) {
        knownValue.putAll(calculated);
        return knownValue;
    }

    @Override
    public Map createValue(Class> valueType, int n) {
        return new THashMap(n);
    }

    @Override
    public Void createComposer(int n) {
        return null;
    }

    @Override
    public void addKnown(Map knownValues, Void composer, int i, K k, V v) {
        knownValues.put(k, v);
    }

    @Override
    public void addUnknown(Map knownValues, Void composer, int i, K k) {
    }

    @Override
    public V get(Map value, int index, K key) {
        return value.get(key);
    }

    @Override
    public boolean requiresOrder() {
        return false;
    }
}