Exemplo n.º 1
0
        /// <summary>
        /// The get in criteria.
        /// </summary>
        /// <param name="criteria">
        /// The criteria.
        /// </param>
        /// <param name="property">
        /// The property.
        /// </param>
        /// <param name="values">
        /// The values.
        /// </param>
        /// <param name="invert">
        /// The invert.
        /// </param>
        /// <typeparam name="T">
        /// Entity type
        /// </typeparam>
        /// <returns>
        /// The <see cref="IEnumerable{DetachedCriteria}"/>.
        /// </returns>
        private static IEnumerable <DetachedCriteria> GetInCriteries <T>(this DetachedCriteria criteria, string property, IList <T> values, bool invert)
        {
            // Maximum count of parameters for MS Sql Server is 2100
            const int ParametersCount = 2000;

            int count = values.Count / ParametersCount;

            if (values.Count % ParametersCount != 0)
            {
                count++;
            }

            for (int i = 0; i < count; i++)
            {
                var parameters = new List <object>();

                for (int j = i * ParametersCount; j < Math.Min((i + 1) * ParametersCount, values.Count); j++)
                {
                    parameters.Add(values[j]);
                }

                DetachedCriteria newCriteria = criteria.DeepClone();

                newCriteria.Add(
                    !invert
                        ? Restrictions.In(property, parameters)
                        : Restrictions.Not(Restrictions.In(property, parameters)));

                yield return(newCriteria);
            }
        }