/// <summary>Adds a query filter to the filter context associated with the specified key.</summary>
/// <typeparam name="T">The type of elements of the query.</typeparam>
/// <param name="key">The filter key.</param>
/// <param name="filter">The filter.</param>
/// <returns>The query filter added to the filter context associated with the specified ke .</returns>
public AliasBaseQueryFilter AddFilter <T>(object key, Func <IQueryable <T>, IQueryable <T> > filter)
{
#if EF6
var queryFilter = new QueryDbSetFilter <T>(this, filter);
#else
var queryFilter = new QueryFilter <T>(this, filter);
#endif
Filters.Add(key, queryFilter);
return(queryFilter);
}
/// <summary>
/// Creates and return a filter associated with the specified key added for the context.
/// </summary>
/// <typeparam name="T">The type of elements of the query.</typeparam>
/// <param name="key">The filter key associated to the filter.</param>
/// <param name="queryFilter">The query filter to apply to the the context.</param>
/// <param name="isEnabled">true if the filter is enabled.</param>
/// <returns>The filter created and added to the the context.</returns>
public static AliasBaseQueryFilter Filter <T>(object key, Func <IQueryable <T>, IQueryable <T> > queryFilter, bool isEnabled = true)
{
AliasBaseQueryFilter filter;
if (!GlobalFilters.TryGetValue(key, out filter))
{
#if EF6
filter = new QueryDbSetFilter <T>(null, queryFilter)
{
IsDefaultEnabled = isEnabled
};
#else
filter = new QueryFilter <T>(null, queryFilter)
{
IsDefaultEnabled = isEnabled
};
#endif
GlobalFilters.Add(key, filter);
}
return(filter);
}