protected string GetFiltering(FilterObjectWrapper filter)
{
var finalExpression = string.Empty;
foreach (var filterObject in filter.FilterObjects)
{
filterObject.Field1 = MapFieldfromViewModeltoEntity(filterObject.Field1);
filterObject.Field2 = MapFieldfromViewModeltoEntity(filterObject.Field2);
if (finalExpression.Length > 0)
{
finalExpression += " " + filter.LogicToken + " ";
}
if (filterObject.IsConjugate)
{
var expression1 = filterObject.GetExpression1 <TEntity>();
var expression2 = filterObject.GetExpression2 <TEntity>();
var combined = $"({expression1} {filterObject.LogicToken} {expression2})";
finalExpression += combined;
}
else
{
var expression = filterObject.GetExpression1 <TEntity>();
finalExpression += expression;
}
}
return(finalExpression.Length == 0 ? "true" : finalExpression);
}
private IQueryable <TEntity> ApplyFiltering(IQueryable <TEntity> query, FilterObjectWrapper filter)
{
string filtering = GetFiltering(filter);
return(filtering != null?query.Where(filtering) : query);
}