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package com.speedment.runtime.compute.internal.predicate;

import com.speedment.runtime.compute.expression.predicate.IsNotNull;
import com.speedment.runtime.compute.expression.predicate.IsNull;
import com.speedment.runtime.compute.trait.ToNullable;

import static java.util.Objects.requireNonNull;

/**
 * Default implementation of the {@link IsNotNull}-interface.
 *
 * @author Emil Forslund
 * @since  3.1.2
 */
public final class IsNotNullImpl
implements IsNotNull {

    private final ToNullable expression;

    public IsNotNullImpl(ToNullable expression) {
        this.expression = requireNonNull(expression);
    }

    @Override
    public IsNull negate() {
        return new IsNullImpl<>(expression);
    }

    @Override
    public ToNullable expression() {
        return expression;
    }
}