com.speedment.runtime.field.internal.predicate.bytes.ByteBetweenPredicate Maven / Gradle / Ivy

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Partly generated model of the fields that represent columns in the database. Fields can be used to produce special predicates and functions that contain metadata that Speedment can analyze runtime.

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/**
 * 
 * Copyright (c) 2006-2017, Speedment, Inc. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); You may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at: 
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.speedment.runtime.field.internal.predicate.bytes;

import com.speedment.common.annotation.GeneratedCode;
import com.speedment.common.tuple.Tuple2;
import com.speedment.runtime.field.internal.predicate.AbstractFieldPredicate;
import com.speedment.runtime.field.internal.predicate.BetweenPredicate;
import com.speedment.runtime.field.predicate.Inclusion;
import com.speedment.runtime.field.predicate.PredicateType;
import com.speedment.runtime.field.trait.HasByteValue;
import static java.util.Objects.requireNonNull;

/**
 * A predicate that evaluates if a value is between two bytes.
 * 
 * @param  entity type
 * @param       database type
 * 
 * @author Emil Forslund
 * @since  3.0.0
 */
@GeneratedCode(value = "Speedment")
public final class ByteBetweenPredicate 
extends AbstractFieldPredicate> 
implements BetweenPredicate,
          Tuple2 {
    
    private final byte start;
    private final byte end;
    private final Inclusion inclusion;
    
    public ByteBetweenPredicate(
            HasByteValue field,
            byte start,
            byte end,
            Inclusion inclusion) {
        super(PredicateType.BETWEEN, field, entity -> {
            final byte fieldValue = field.getAsByte(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 Byte get0() {
        return start;
    }
    
    @Override
    public Byte get1() {
        return end;
    }
    
    @Override
    public Inclusion getInclusion() {
        return inclusion;
    }
    
    @Override
    public ByteNotBetweenPredicate negate() {
        return new ByteNotBetweenPredicate<>(getField(), start, end, inclusion);
    }
}