/// <summary>
/// Translates an OData $filter represented by <see cref="FilterClause"/> to <see cref="Expression"/> and apply to <see cref="IQueryable" />.
/// </summary>
/// <param name="binder">The given filter binder.</param>
/// <param name="query">The given queryable.</param>
/// <param name="filterClause">The filter clause.</param>
/// <param name="context">The query binder context.</param>
/// <returns>The applied result.</returns>
public static IQueryable ApplyBind(this IFilterBinder binder, IQueryable query, FilterClause filterClause, QueryBinderContext context)
{
if (binder == null)
{
throw Error.ArgumentNull(nameof(binder));
}
if (query == null)
{
throw Error.ArgumentNull(nameof(query));
}
if (filterClause == null)
{
throw Error.ArgumentNull(nameof(filterClause));
}
if (context == null)
{
throw Error.ArgumentNull(nameof(context));
}
Expression filterExp = binder.BindFilter(filterClause, context);
return(ExpressionHelpers.Where(query, filterExp, context.ElementClrType));
}
/// <summary>
/// Translates an OData $filter represented by <see cref="FilterClause"/> to <see cref="Expression"/> and apply to <see cref="Expression" />.
/// </summary>
/// <param name="binder">The given filter binder.</param>
/// <param name="source">The given source.</param>
/// <param name="filterClause">The filter clause.</param>
/// <param name="context">The query binder context.</param>
/// <returns>The applied result.</returns>
public static Expression ApplyBind(this IFilterBinder binder, Expression source, FilterClause filterClause, QueryBinderContext context)
{
if (binder == null)
{
throw Error.ArgumentNull(nameof(binder));
}
if (source == null)
{
throw Error.ArgumentNull(nameof(source));
}
if (filterClause == null)
{
throw Error.ArgumentNull(nameof(filterClause));
}
if (context == null)
{
throw Error.ArgumentNull(nameof(context));
}
Expression filterExp = binder.BindFilter(filterClause, context);
Type elementType = context.ElementClrType;
MethodInfo filterMethod;
if (typeof(IQueryable).IsAssignableFrom(source.Type))
{
filterMethod = ExpressionHelperMethods.QueryableWhereGeneric.MakeGenericMethod(elementType);
}
else
{
filterMethod = ExpressionHelperMethods.EnumerableWhereGeneric.MakeGenericMethod(elementType);
}
return(Expression.Call(filterMethod, source, filterExp));
}
/// <summary>
/// Translates an OData $filter represented by <see cref="FilterClause"/> to <see cref="Expression"/> and apply to <see cref="IEnumerable" />.
/// </summary>
/// <param name="binder">The given filter binder.</param>
/// <param name="query">The given IEnumerable.</param>
/// <param name="filterClause">The filter clause.</param>
/// <param name="context">The query binder context.</param>
/// <returns>The applied result.</returns>
public static IEnumerable ApplyBind(this IFilterBinder binder, IEnumerable query, FilterClause filterClause, QueryBinderContext context)
{
if (binder == null)
{
throw Error.ArgumentNull(nameof(binder));
}
if (query == null)
{
throw Error.ArgumentNull(nameof(query));
}
if (context == null)
{
throw Error.ArgumentNull(nameof(context));
}
Expression filterExp = binder.BindFilter(filterClause, context);
MethodInfo whereMethod = ExpressionHelperMethods.EnumerableWhereGeneric.MakeGenericMethod(context.ElementClrType);
return(whereMethod.Invoke(null, new object[] { query, filterExp }) as IEnumerable);
}