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The module for FunctionalJ Core.

There is a newer version: 1.0.17

// ============================================================================
// Copyright (c) 2017-2021 Nawapunth Manusitthipol (NawaMan - http://nawaman.net)
// ----------------------------------------------------------------------------
// MIT License
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// ============================================================================
package functionalj.function.aggregator;

import functionalj.lens.lenses.LongToDoubleAccessPrimitive;
import functionalj.stream.longstream.collect.LongCollectedToDouble;
import functionalj.stream.longstream.collect.LongCollectorToDoublePlus;

public interface LongAggregatorToDouble extends LongToDoubleAccessPrimitive, LongAggregator {
    
    public LongCollectedToDouble asCollected();
    
    //== Implementation ==
    
    public static class Impl implements LongAggregatorToDouble {
        
        private final LongCollectedToDouble collected;
        
        public Impl(LongCollectorToDoublePlus collector) {
            this.collected = LongCollectedToDouble.of(collector);
        }
        
        @Override
        public double applyLongToDouble(long input) {
            collected.accumulate(input);
            return collected.finish();
        }
        
        public LongCollectedToDouble asCollected() {
            return collected;
        }
    }
    
}