/// <inheritdoc/>
public override Expression <Func <T, bool> > ToExpression()
{
var expression = _specification.ToExpression();
var notExpression = Expression.Not(expression.Body);
return(Expression.Lambda <Func <T, bool> >(notExpression, expression.Parameters));
}
/// <inheritdoc/>
public override Expression <Func <T, bool> > ToExpression()
{
var leftExpression = _left.ToExpression();
var rightExpression = _right.ToExpression();
var invokedExpression = Expression.Invoke(rightExpression, leftExpression.Parameters);
var body = Expression.OrElse(leftExpression.Body, invokedExpression);
return(Expression.Lambda <Func <T, bool> >(body, leftExpression.Parameters));
}
/// <summary>
/// Filters a sequence of values based on <paramref name="specification"/>.
/// </summary>
/// <typeparam name="TSource">Type.</typeparam>
/// <param name="source">Sequence.</param>
/// <param name="specification">Specification.</param>
/// <returns>An <see cref="IQueryable"/>.</returns>
public static IQueryable <TSource> Where <TSource>(
this IQueryable <TSource> source, SpecificationBase <TSource> specification)
{
return(source.Where(specification.ToExpression()));
}
