//using System.Linq.Expressions;

//namespace CMS.Plugin.HIAWms.Domain.WmsMaterials
//{
//    /// <summary>
//    /// WmsMaterial规约
//    /// </summary>
//    public class WmsMaterialSpecification : Volo.Abp.Specifications.Specification<WmsMaterial>
//    {
//        private readonly string _materialCode;

//        /// <summary>
//        /// Initializes a new instance of the <see cref="WmsMaterialSpecification"/> class.
//        /// </summary>
//        public WmsMaterialSpecification()
//        {
//        }

//        /// <summary>
//        /// Initializes a new instance of the <see cref="WmsMaterialSpecification"/> class.
//        /// </summary>
//        /// <param name="materialCode">The name.</param>
//        public WmsMaterialSpecification(string materialCode = null)
//        {
//            _materialCode = materialCode;
//        }

//        /// <inheritdoc />
//        public override Expression<Func<WmsMaterial, bool>> ToExpression()
//        {
//            Expression<Func<WmsMaterial, bool>> expression = c => 1 == 1;

//            if (_materialCode != null)
//            {
//                expression = expression.And(c => c.MaterialCode == _materialCode);
//            }

//            return expression;
//        }
//    }
//}