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Conditional values simplify conditional logic and get rid of if-statements in the code

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///////////////////////////////////////////////////////////////////////////////////////////////////
// Conditional values simplify conditional logic and get rid of if-statements in the code.
// Copyright (C) 2016 Dmitry Shapovalov.
//
// This file is part of conditional values.
//
// Conditional values is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Conditional values is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see .
///////////////////////////////////////////////////////////////////////////////////////////////////
package ru.d_shap.conditionalvalues.predicate;

import ru.d_shap.conditionalvalues.Predicate;

/**
 * Predicate applies the function to the Object from the {@link ru.d_shap.conditionalvalues.ValueSet} object,
 * and then applies the specified {@link ru.d_shap.conditionalvalues.Predicate} to the result.
 *
 * @author Dmitry Shapovalov
 */
public final class ValueSetFunctionPredicate implements Predicate {

    private final ValueSetFunction _valueSetFunction;

    private final Predicate _predicate;

    /**
     * Create new object.
     *
     * @param valueSetFunction the function to apply to the Object from the {@link ru.d_shap.conditionalvalues.ValueSet} object.
     * @param predicate        the {@link ru.d_shap.conditionalvalues.Predicate} to apply to the result.
     */
    public ValueSetFunctionPredicate(final ValueSetFunction valueSetFunction, final Predicate predicate) {
        super();
        _valueSetFunction = valueSetFunction;
        _predicate = predicate;
    }

    @Override
    public boolean evaluate(final String conditionName, final Object conditionSetValue, final Object valueSetValue) {
        Object newValueSetValue = _valueSetFunction.apply(valueSetValue);
        return _predicate.evaluate(conditionName, conditionSetValue, newValueSetValue);
    }

}