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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
// copies of the Software, and to permit persons to whom the Software is
// 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,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ============================================================================
package functionalj.stream;

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

import functionalj.function.Func3;
import functionalj.function.Func4;
import functionalj.function.Func5;
import functionalj.function.Func6;
import lombok.val;


public interface StreamPlusWithMapThen {
    
    public StreamPlus streamPlus();
    
    
    /** Map the value into different values and then combine them with the combinator. */
    public default  
        StreamPlus mapThen(
                Function mapper1,
                Function mapper2,
                BiFunction function) {
        val streamPlus = streamPlus();
        return streamPlus
                .mapToObj(each -> {
                    val v1 = mapper1.apply(each);
                    val v2 = mapper2.apply(each);
                    val v  = function.apply(v1, v2);
                    return v;
                });
    }
    
    /** Map the value into different values and then combine them with the combinator. */
    public default  
        StreamPlus mapThen(
                Function mapper1,
                Function mapper2,
                Function mapper3,
                Func3 function) {
        val streamPlus = streamPlus();
        return streamPlus
                .mapToObj(each -> {
                    val v1 = mapper1.apply(each);
                    val v2 = mapper2.apply(each);
                    val v3 = mapper3.apply(each);
                    val v  = function.apply(v1, v2, v3);
                    return v;
                });
    }
    
    /** Map the value into different values and then combine them with the combinator. */
    public default  
        StreamPlus mapThen(
                Function mapper1,
                Function mapper2,
                Function mapper3,
                Function mapper4,
                Func4 function) {
        val streamPlus = streamPlus();
        return streamPlus
                .mapToObj(each -> {
                    val v1 = mapper1.apply(each);
                    val v2 = mapper2.apply(each);
                    val v3 = mapper3.apply(each);
                    val v4 = mapper4.apply(each);
                    val v  = function.apply(v1, v2, v3, v4);
                    return v;
        });
    }
    
    /** Map the value into different values and then combine them with the combinator. */
    public default  
        StreamPlus mapThen(
                Function mapper1,
                Function mapper2,
                Function mapper3,
                Function mapper4,
                Function mapper5,
                Func5 function) {
        val streamPlus = streamPlus();
        return streamPlus
                .mapToObj(each -> {
                    val v1 = mapper1.apply(each);
                    val v2 = mapper2.apply(each);
                    val v3 = mapper3.apply(each);
                    val v4 = mapper4.apply(each);
                    val v5 = mapper5.apply(each);
                    val v  = function.apply(v1, v2, v3, v4, v5);
                    return v;
                });
    }
    
    /** Map the value into different values and then combine them with the combinator. */
    public default  
        StreamPlus mapThen(
                Function mapper1,
                Function mapper2,
                Function mapper3,
                Function mapper4,
                Function mapper5,
                Function mapper6,
                Func6 function) {
        val streamPlus = streamPlus();
        return streamPlus
                .mapToObj(each -> {
                    val v1 = mapper1.apply(each);
                    val v2 = mapper2.apply(each);
                    val v3 = mapper3.apply(each);
                    val v4 = mapper4.apply(each);
                    val v5 = mapper5.apply(each);
                    val v6 = mapper6.apply(each);
                    val v  = function.apply(v1, v2, v3, v4, v5, v6);
                    return v;
                });
    }
}