com.savoirtech.hecate.pojo.util.FunctionCacheLoader Maven / Gradle / Ivy

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/*
 * Copyright (c) 2012-2016 Savoir Technologies, Inc.
 *
 * 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 com.savoirtech.hecate.pojo.util;

import java.util.function.Function;

import com.google.common.cache.CacheLoader;

public class FunctionCacheLoader extends CacheLoader {
//----------------------------------------------------------------------------------------------------------------------
// Fields
//----------------------------------------------------------------------------------------------------------------------

    private final Function function;

//----------------------------------------------------------------------------------------------------------------------
// Constructors
//----------------------------------------------------------------------------------------------------------------------

    public static  CacheLoader loader(Function function) {
        return new FunctionCacheLoader<>(function);
    }

    public FunctionCacheLoader(Function function) {
        this.function = function;
    }

//----------------------------------------------------------------------------------------------------------------------
// Other Methods
//----------------------------------------------------------------------------------------------------------------------

    @Override
    public V load(K key) throws Exception {
        return function.apply(key);
    }
}