public Expression GetExpression(bool isNull, string fieldType, string whereOperator, Expression columnNameExpr, Expression columnValueExpr)
{
Expression combinedExpr = null;
TypeDatetime typeDatetime = new TypeDatetime();
if (!string.IsNullOrEmpty(whereOperator) & columnNameExpr != null & columnValueExpr != null)
{
string valueDatetime = columnValueExpr.ToString().Replace(@"""", "").Replace(@"'", "").Trim();
DateTime dateTime = Convert.ToDateTime(valueDatetime);
string mydatefrom = dateTime.ToString("yyyy-MM-dd") + " " + "00:00:00";
string mydateto = dateTime.ToString("yyyy-MM-dd") + " " + "23:59:59";
object colValue = null;
InterfaceOperatorExpr expr = null;
TypeString typeString = new TypeString();
if (ColumnProperties.GetInstance.IsColumn(whereOperator, ">", ">=", "<", "<=", "="))
{
if (ColumnProperties.GetInstance.IsColumn(whereOperator, ">", ">="))
{
colValue = typeString.GetConvertedValue(false, mydatefrom, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, mydatefrom, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new MoreThanOperatorExpr();
combinedExpr = expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr);
//>= 2017-01-01 00:00:00
}
if (ColumnProperties.GetInstance.IsColumn(whereOperator, "<", "<="))
{
colValue = typeString.GetConvertedValue(false, mydateto, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, mydateto, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new LessThanOperatorExpr();
combinedExpr = expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr);
//<= 2017-01-01 23:59:59
}
if (ColumnProperties.GetInstance.IsColumn(whereOperator, "="))
{
colValue = typeString.GetConvertedValue(false, mydatefrom, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, mydatefrom, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new MoreThanOperatorExpr();
combinedExpr = expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr);
colValue = typeString.GetConvertedValue(false, mydateto, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, mydateto, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new LessThanOperatorExpr();
combinedExpr = Expression.And(combinedExpr, expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr));
//>=2017-01-01 00:00:00 and <= 2017-01-01 23:59:59
}
}
}
return(combinedExpr);
}
public Expression GetExpression(bool isNull, string fieldType, string whereOperator, Expression columnNameExpr, Expression columnValueExpr)
{
Expression combinedExpr = null;
TypeDatetime typeDatetime = new TypeDatetime();
if (!string.IsNullOrEmpty(whereOperator) & columnNameExpr != null & columnValueExpr != null)
{
string valueBetween = columnValueExpr.ToString().Replace(@"""", "").Replace(@"'", "").Trim();
string value1 = string.Empty;
string value2 = string.Empty;
object colValue = null;
InterfaceOperatorExpr expr = null;
TypeString typeString = new TypeString();
if (valueBetween.Contains("|"))
{
string[] valueBetweenArray = valueBetween.Split(new char[] { '|' });
value1 = valueBetweenArray[0].Trim();
value2 = valueBetweenArray[1].Trim();
value1 = fieldType == "datetime" ? Convert.ToDateTime(value1).ToString("yyyy-MM-dd") + " " + "00:00:00" : value1;
value2 = fieldType == "datetime" ? Convert.ToDateTime(value2).ToString("yyyy-MM-dd") + " " + "23:59:59" : value2;
}
else
{
value1 = valueBetween;
value1 = fieldType == "datetime" ? Convert.ToDateTime(value1).ToString("yyyy-MM-dd") + " " + "00:00:00" : value1;
value2 = fieldType == "datetime" ? Convert.ToDateTime(value1).ToString("yyyy-MM-dd") + " " + "23:59:59" : value1;
}
if (fieldType == "datetime")
{
colValue = typeString.GetConvertedValue(false, value1, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, value1, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new MoreThanOperatorExpr();
combinedExpr = expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr);
colValue = typeString.GetConvertedValue(false, value2, whereOperator);
colValue = fieldType != "datetime" ? colValue : typeDatetime.GetConvertedValue(false, value2, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new LessThanOperatorExpr();
combinedExpr = Expression.And(combinedExpr, expr.GetExpression(false, "datetime", whereOperator, columnNameExpr, columnValueExpr));
//>=2017-01-01 00:00:00 and <= 2017-01-01 23:59:59
}
else
{
if (valueBetween.Contains("|"))
{
colValue = TypeBantuan.GetInstance.DictTypes[fieldType].GetConvertedValue(isNull, value1, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new MoreThanOperatorExpr();
combinedExpr = expr.GetExpression(false, fieldType, ">=", columnNameExpr, columnValueExpr);
colValue = TypeBantuan.GetInstance.DictTypes[fieldType].GetConvertedValue(isNull, value2, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new LessThanOperatorExpr();
combinedExpr = Expression.And(combinedExpr, expr.GetExpression(false, fieldType, "<", columnNameExpr, columnValueExpr));
//fieldname >= 10 and fieldname <12
}
else
{
colValue = TypeBantuan.GetInstance.DictTypes[fieldType].GetConvertedValue(isNull, value1, whereOperator);
columnValueExpr = Expression.Constant(colValue);
expr = new EqualOperatorExpr();
combinedExpr = expr.GetExpression(false, fieldType, "=", columnNameExpr, columnValueExpr);
//fieldname = 10
}
}
}
return(combinedExpr);
}