com.speedment.jpastreamer.field.internal.predicate.floats.FloatBetweenPredicate Maven / Gradle / Ivy

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/*
 * JPAstreamer - Express JPA queries with Java Streams
 * Copyright (c) 2020-2020, Speedment, Inc. All Rights Reserved.
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 *
 * This library 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.
 *
 * See: https://github.com/speedment/jpa-streamer/blob/master/LICENSE
 */
package com.speedment.jpastreamer.field.internal.predicate.floats;

import com.speedment.jpastreamer.field.predicate.trait.HasInclusion;
import com.speedment.jpastreamer.field.trait.HasArg0;
import com.speedment.jpastreamer.field.trait.HasArg1;
import com.speedment.jpastreamer.field.trait.HasFloatValue;
import com.speedment.jpastreamer.field.internal.predicate.AbstractFieldPredicate;
import com.speedment.jpastreamer.field.predicate.Inclusion;
import com.speedment.jpastreamer.field.predicate.PredicateType;

import static java.util.Objects.requireNonNull;

/**
 * A predicate that evaluates if a value is between two floats.
 * 
 * @param  entity type
 *
 * @author Emil Forslund
 * @since  3.0.0
 */
public final class FloatBetweenPredicate
extends AbstractFieldPredicate>
implements HasInclusion,
        HasArg0,
        HasArg1 {
    
    private final float start;
    private final float end;
    private final Inclusion inclusion;
    
    public FloatBetweenPredicate(
            HasFloatValue field,
            float start,
            float end,
            Inclusion inclusion) {
        super(PredicateType.BETWEEN, field, entity -> {
            final float fieldValue = field.getAsFloat(entity);
            
            switch (inclusion) {
                case START_EXCLUSIVE_END_EXCLUSIVE :
                    return (start < fieldValue && end > fieldValue);
                
                case START_EXCLUSIVE_END_INCLUSIVE :
                    return (start < fieldValue && end >= fieldValue);
                
                case START_INCLUSIVE_END_EXCLUSIVE :
                    return (start <= fieldValue && end > fieldValue);
                
                case START_INCLUSIVE_END_INCLUSIVE :
                    return (start <= fieldValue && end >= fieldValue);
                
                default : throw new IllegalStateException("Inclusion unknown: " + inclusion);
            }
        });
        
        this.start     = start;
        this.end       = end;
        this.inclusion = requireNonNull(inclusion);
    }
    
    @Override
    public Float get0() {
        return start;
    }
    
    @Override
    public Float get1() {
        return end;
    }
    
    @Override
    public Inclusion getInclusion() {
        return inclusion;
    }
    
    @Override
    public FloatNotBetweenPredicate negate() {
        return new FloatNotBetweenPredicate<>(getField(), start, end, inclusion);
    }
}