public static Expression GreaterLessThanBuilderExpressions(this MemberExpression leftExpression,
ExpressionDateTimeInfo leftExpr,
ExpressionDateTimeInfo rightExpr,
BitwiseOperationExpressions bitwiseOperationExpressions)
{
var greaterThanOrEqualBody = Expression.MakeBinary(leftExpr.ExpressionType.ConvertByName <ExpressionType>(),
leftExpression,
leftExpr.Constant);
if (rightExpr?.Constant == null)
{
return(greaterThanOrEqualBody);
}
var lessThanOrEqualBody = Expression.MakeBinary(rightExpr.ExpressionType.ConvertByName <ExpressionType>(),
leftExpression,
rightExpr.Constant);
return(greaterThanOrEqualBody.ChooseExpressionType(bitwiseOperationExpressions, lessThanOrEqualBody));
}
internal static (ExpressionDateTimeInfo dateFromExprInfo, ExpressionDateTimeInfo dateToExprInfo) BuildExpressionDateTimeInfo(DateTimeFromToFilter dateTimeFromToFilter, bool nullable)
{
// var dateTimeValueDateFrom = dateTimeFromToFilter.DateFrom;
// var dateTimeValueDateTo = dateTimeFromToFilter.DateTo;
var fromDate = dateTimeFromToFilter.DateFrom;
var toDate = dateTimeFromToFilter.DateTo;
const CompareExpressionType fromDateExprType = CompareExpressionType.GreaterThanOrEqual;
CompareExpressionType toDateExprType = default;
if (toDate != null)
{
toDateExprType = CompareExpressionType.LessThanOrEqual;
toDate = dateTimeFromToFilter.DateTo;
}
ExpressionDateTimeInfo dateToExprInfo = default;
ConstantExpression fromDateExpressionConstant;
if (dateTimeFromToFilter.TruncateTime)
{
fromDateExpressionConstant = Expression.Constant(fromDate.Value.Date, typeof(DateTime));
}
else
{
fromDateExpressionConstant = nullable
? Expression.Constant(fromDate, typeof(DateTime?))
: Expression.Constant((DateTime)fromDate, typeof(DateTime));
}
if (toDate.HasValue)
{
ConstantExpression toDateExpressionConstant;
if (dateTimeFromToFilter.TruncateTime)
{
toDateExpressionConstant = Expression.Constant(toDate.Value.Date, typeof(DateTime));
}
else
{
toDateExpressionConstant = nullable
? Expression.Constant(toDate, typeof(DateTime?))
: Expression.Constant((DateTime)toDate, typeof(DateTime));
}
dateToExprInfo = new ExpressionDateTimeInfo {
Constant = toDateExpressionConstant, ExpressionType = toDateExprType, DateTime = toDate
};
// (rightToDate, dateToExprType);
}
else
{
dateToExprInfo = new ExpressionDateTimeInfo();
}
var dateFromExprInfo = new ExpressionDateTimeInfo {
Constant = fromDateExpressionConstant, ExpressionType = fromDateExprType, DateTime = fromDate
};
return(dateFromExprInfo, dateToExprInfo);
}
