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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.lens.lenses;

import java.util.function.Function;

import functionalj.lens.core.AccessParameterized2;
import functionalj.tuple.Tuple2;

// TODO - See if this can be shared with Tuple2Lens.

@FunctionalInterface
public interface FuncMapEntryAccess, KEY, VALUE, 
                                KEYACCESS extends AnyAccess, 
                                VALUEACCESS extends AnyAccess>
                    extends AccessParameterized2 {

    public AccessParameterized2 accessParameterized2();
    
    @Override
    public default MAPENTRY applyUnsafe(HOST host) throws Exception {
        return accessParameterized2().apply(host);
    }
    
    @Override
    public default KEYACCESS createSubAccess1(Function accessToParameter) {
        return accessParameterized2().createSubAccess1(accessToParameter);
    }
    
    @Override
    public default VALUEACCESS createSubAccess2(Function accessToParameter) {
        return accessParameterized2().createSubAccess2(accessToParameter);
    }
    
    @Override
    default KEYACCESS createSubAccessFromHost1(Function accessToParameter) {
        return accessParameterized2().createSubAccessFromHost1(accessToParameter);
    }
    
    @Override
    default VALUEACCESS createSubAccessFromHost2(Function accessToParameter) {
        return accessParameterized2().createSubAccessFromHost2(accessToParameter);
    }
    
    public default KEYACCESS key() {
        return accessParameterized2().createSubAccess1((MAPENTRY mapEntry) -> {
            if (mapEntry == null)
                return null;
            return mapEntry._1();
        });
    }

    public default VALUEACCESS value() {
        return accessParameterized2().createSubAccess2((MAPENTRY mapEntry) -> {
            if (mapEntry == null)
                return null;
            return mapEntry._2();
        });
    }
    
}