io.fluxcapacitor.javaclient.persisting.caching.NoOpCache Maven / Gradle / Ivy

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Default Java client library for interfacing with Flux Capacitor.

There is a newer version: v0.1

/*
 * Copyright (c) Flux Capacitor IP B.V. or its affiliates. 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 io.fluxcapacitor.javaclient.persisting.caching;

import io.fluxcapacitor.common.Registration;
import lombok.NonNull;

import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Function;

public enum NoOpCache implements Cache {
    INSTANCE;

    @Override
    public Object put(Object id, @NonNull Object value) {
        return null;
    }

    @Override
    public Object putIfAbsent(Object id, @NonNull Object value) {
        return null;
    }

    @Override
    public  T computeIfAbsent(Object id, Function mappingFunction) {
        return mappingFunction.apply(id);
    }

    @Override
    public  T computeIfPresent(Object id, BiFunction mappingFunction) {
        return null;
    }

    @Override
    public  T compute(Object id, BiFunction mappingFunction) {
        return mappingFunction.apply(id, null);
    }

    @Override
    public  void modifyEach(BiFunction modifierFunction) {
        //no op
    }

    @Override
    public  T get(Object id) {
        return null;
    }

    @Override
    public boolean containsKey(Object id) {
        return false;
    }

    @Override
    public  T remove(Object id) {
        return null;
    }

    @Override
    public void clear() {
        //no op
    }

    @Override
    public int size() {
        return 0;
    }

    @Override
    public Registration registerEvictionListener(Consumer listener) {
        return Registration.noOp();
    }

    @Override
    public void close() {
    }
}