/// <summary>
/// Checks the entity sort field.
/// </summary>
/// <typeparam name="TEntity">The type of the t entity.</typeparam>
/// <param name="qb">The qb.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
/// <exception cref="System.Exception">$the TEntity has not {qb.SortField} property</exception>
public static bool CheckEntitySortField <TEntity>(this BaseQueryBuilder qb)
{
PropertyInfo sortProperty = typeof(TEntity).GetProperty(qb.SortField, BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
if (sortProperty == null)
{
throw new Exception($"the TEntity has not SortField value's property");
}
return(true);
}
/// <summary>
/// Checks the entity sort order.
/// </summary>
/// <param name="qb">The qb.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
/// <exception cref="System.Exception">$the TEntity has not {qb.SortField} property</exception>
public static bool CheckEntitySortOrder(this BaseQueryBuilder qb)
{
List <string> orderType = new List <string> {
"asc", "desc"
};
if (orderType.Contains(qb.SortOrder.ToLower()))
{
return(true);
}
throw new Exception("please set SortOrder value(asc or desc)");
}
/// <summary>
/// Checks the entity field.
/// </summary>
/// <typeparam name="TEntity">The type of the t entity.</typeparam>
/// <param name="qb">The qb.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
/// <exception cref="System.Exception">$the object dose not have {string.Join(;,, noneFields)} fields</exception>
public static bool CheckEntityField <TEntity>(this BaseQueryBuilder qb)
{
if (qb.Items.Count() != 0)
{
var fields = qb.Items.Select(p => p.Field).ToList();
var entityFields = typeof(TEntity).GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase).Select(p => p.Name);
var noneFields = fields.FindAll(p => !entityFields.Contains(p));
if (noneFields.Count() != 0)
{
throw new Exception($"the object dose not have {string.Join(",", noneFields)} fields");
}
}
return(true);
}
/// <summary>
/// Wheres the specified qb.
/// </summary>
/// <typeparam name="TEntity">The type of the t entity.</typeparam>
/// <param name="source">The source.</param>
/// <param name="qb">The qb.</param>
/// <returns>IQueryable<TEntity>.</returns>
/// <exception cref="System.Exception">Please Set Default Sort Field</exception>
public static IQueryable <TEntity> Where <TEntity>(this IQueryable <TEntity> source, BaseQueryBuilder qb)
{
qb.CheckEntityField <TEntity>();
var query = source.Where((SearchCondition)qb);
//if (qb.DefaultSort && typeof(TEntity).GetProperty(qb.SortField, BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance) == null)
//{
// qb.SortField = "SortIndex";
// qb.SortOrder = "asc";
//}
qb.TotolCount = query.Count();
if (!string.IsNullOrEmpty(qb.SortField) && qb.DefaultSort)
{
query = query.OrderBy(qb.SortField, string.Equals(qb.SortOrder, SortMode.Asc.ToString(), StringComparison.CurrentCultureIgnoreCase));
}
else if (qb.DefaultSort)
{
throw new Exception("Please Set Default Sort Field");
//query = query.OrderBy<TEntity>("ID", false);
}
if (qb.PageSize == 0)
{
return(query);
}
if (qb.NeedPaging)
{
query = query.Where(qb.PageSize, qb.PageIndex);
}
return(query);
}
