public override void Prepare()
{
base.Prepare();
if (!(Operand1.GetResultType() == SimpleTypes.String && Operand2.GetResultType() == SimpleTypes.Integer))
{
TypesException();
}
SetResultType(SimpleTypes.String);
GetStrResultOut = CalcAsStr;
}
public override void Prepare()
{
base.Prepare();
if (!(Operand1.GetResultType() == SimpleTypes.String && Operand2.GetResultType() == SimpleTypes.String))
{
TypesException();
}
//if (!Operand2.OnlyOnline()) OperandOnlyConstException(2);
SetResultType(SimpleTypes.Boolean);
GetBoolResultOut = CalcAsBool;
}
public override void Prepare()
{
base.Prepare();
SimpleTypes t1 = Operand1.GetResultType();
SimpleTypes t2 = Operand2.GetResultType();
//public enum ColumnSimpleTypes { Integer = 1, Float = 2, String = 3, Geometry = 4, Date = 5, DateTime = 6, Time = 7, Boolean = 8 }
if (t1 == SimpleTypes.String && t2 == SimpleTypes.String)
{
GetStrResultOut = CalcAsStr;
SetResultType(SimpleTypes.String);
return;
}
if (t1 == SimpleTypes.Integer && t2 == SimpleTypes.Integer)
{
GetIntResultOut = CalcAsInt;
SetResultType(SimpleTypes.Integer);
return;
}
if ((t1 == SimpleTypes.Integer || t1 == SimpleTypes.Float) &&
(t2 == SimpleTypes.Integer || t2 == SimpleTypes.Float))
{
GetFloatResultOut = CalcAsFloat;
SetResultType(SimpleTypes.Float);
return;
}
if ((t1 == SimpleTypes.DateTime || t1 == SimpleTypes.Date) && t2 == SimpleTypes.Time)
{
GetDateTimeResultOut = CalcAsDateTimeAndTime1;
SetResultType(SimpleTypes.DateTime);
return;
}
if ((t2 == SimpleTypes.DateTime || t2 == SimpleTypes.Date) && t1 == SimpleTypes.Time)
{
GetDateTimeResultOut = CalcAsDateTimeAndTime2;
SetResultType(SimpleTypes.DateTime);
return;
}
if (t2 == SimpleTypes.Time && t1 == SimpleTypes.Time)
{
GetTimeResultOut = CalcAsTimeAndTime;
SetResultType(SimpleTypes.Time);
return;
}
/*if (t2 == ColumnSimpleTypes.Geometry && t1 == ColumnSimpleTypes.Geometry)
* {
* GetGeomResultOut = CalcAsGeom;
* SetResultType(ColumnSimpleTypes.Geometry);
* return;
* }*/
TypesException();
}
public override void Prepare()
{
base.Prepare();
if (Operand1.GetResultType() != SimpleTypes.Boolean)
{
this.TypesException();
}
if (Operand2.GetResultType() != SimpleTypes.Boolean)
{
this.TypesException();
}
GetBoolResultOut = AsBool;
SetResultType(SimpleTypes.Boolean);
}
public override void Prepare()
{
base.Prepare();
if (!(Operand1.GetResultType() == SimpleTypes.String))
{
TypesException(); //substring
}
if (!(Operand2.GetResultType() == SimpleTypes.String))
{
TypesException(); //string
}
SetResultType(SimpleTypes.Integer);
GetIntResultOut = CalcRes;
}
public override string ToSql(ExpressionSqlBuilder builder)
{
if (builder.DbType == DriverType.SqlServer)
{
string op = "+";
SimpleTypes t1 = Operand1.GetResultType();
SimpleTypes t2 = Operand2.GetResultType();
if (t2 == SimpleTypes.Time && t1 == SimpleTypes.Time)
{
return("CONVERT(time, CONVERT(datetime, " + Operand1.ToSql(builder) + ")" + op + "CONVERT(datetime, " + Operand2.ToSql(builder) + "))");
}
if (t1 == SimpleTypes.Date && t2 == SimpleTypes.Time)
{
return("(CONVERT(datetime, " + Operand1.ToSql(builder) + ")" + op + Operand2.ToSql(builder) + ")");
}
if (t2 == SimpleTypes.Date && t1 == SimpleTypes.Time)
{
return("(CONVERT(datetime, " + Operand2.ToSql(builder) + ")" + op + Operand1.ToSql(builder) + ")");
}
if (t1 == SimpleTypes.Geometry && t2 == SimpleTypes.Geometry)
{
if (op == "+")
{
return("(" + Operand2.ToSql(builder) + ".STUnion(" + Operand1.ToSql(builder) + "))");
}
if (op == "-")
{
return("(" + Operand2.ToSql(builder) + ".STDifference(" + Operand1.ToSql(builder) + "))");
}
}
return("(" + Operand1.ToSql(builder) + op + Operand2.ToSql(builder) + ")");
}
if (builder.DbType == DriverType.PostgreSQL)
{
string op = "+";
SimpleTypes t1 = Operand1.GetResultType();
SimpleTypes t2 = Operand2.GetResultType();
if (t1 == SimpleTypes.String || t2 == SimpleTypes.String)
{
op = "||";
}
if (t2 == SimpleTypes.Time && t1 == SimpleTypes.Time)
{
return("(" + Operand1.ToSql(builder) + op + "CAST(" + Operand2.ToSql(builder) + " as interval))");
}
return("(" + Operand1.ToSql(builder) + op + Operand2.ToSql(builder) + ")");
}
return(ToSqlException());
}
public override void Prepare()
{
base.Prepare();
SimpleTypes t1 = Operand1.GetResultType();
SimpleTypes t2 = Operand2.GetResultType();
//public enum ColumnSimpleTypes { Integer = 1, Float = 2, String = 3, Geometry = 4, Date = 5, DateTime = 6, Time = 7, Boolean = 8 }
if (t1 == SimpleTypes.Integer && t2 == SimpleTypes.Integer)
{
GetIntResultOut = CalcAsInt;
SetResultType(SimpleTypes.Integer);
return;
}
if ((t1 == SimpleTypes.Integer || t1 == SimpleTypes.Float) &&
(t2 == SimpleTypes.Integer || t2 == SimpleTypes.Float))
{
GetFloatResultOut = CalcAsFloat;
SetResultType(SimpleTypes.Float);
return;
}
TypesException();
}
protected bool DoPrepare()
{
SimpleTypes t1 = Operand1.GetResultType();
SimpleTypes t2 = Operand2.GetResultType();
//SortType(ref t1, ref t2);
SetResultType(SimpleTypes.Boolean);
//если один операнд строка, а второй не строка. Проверка для констант
if ((t1 == SimpleTypes.String && t2 != SimpleTypes.String) ||
(t2 == SimpleTypes.String && t1 != SimpleTypes.String))
{
//находим не строковый элемент
Expression notStrOper = Operand1;
Expression StrOper = Operand2;
if (StrOper.GetResultType() != SimpleTypes.String)
{
notStrOper = Operand2; StrOper = Operand1;
}
SimpleTypes notStr = notStrOper.GetResultType();
if (StrOper is ConstExpr)
{
switch (notStr)
{
case SimpleTypes.Integer:
GetBoolResultOut = CompareAsInt;
(StrOper as ConstExpr).PrepareFor(SimpleTypes.Integer);
return(true);
case SimpleTypes.Float:
GetBoolResultOut = CompareAsFloat;
(StrOper as ConstExpr).PrepareFor(SimpleTypes.Float);
return(true);
case SimpleTypes.Date:
case SimpleTypes.DateTime:
GetBoolResultOut = CompareAsDateTime;
(StrOper as ConstExpr).PrepareFor(SimpleTypes.DateTime);
return(true);
case SimpleTypes.Time:
GetBoolResultOut = CompareAsTime;
(StrOper as ConstExpr).PrepareFor(SimpleTypes.Time);
return(true);
}
}
}
if (t1 == SimpleTypes.String && t2 == SimpleTypes.String)
{
GetBoolResultOut = CompareAsStr;
return(true);
}
if (t1 == SimpleTypes.Integer && t2 == SimpleTypes.Integer)
{
GetBoolResultOut = CompareAsInt;
return(true);
}
if ((t1 == SimpleTypes.Integer || t1 == SimpleTypes.Float) &&
(t2 == SimpleTypes.Integer || t2 == SimpleTypes.Float))
{
GetBoolResultOut = CompareAsFloat;
return(true);
}
if ((t1 == SimpleTypes.Date || t1 == SimpleTypes.DateTime) && (t2 == SimpleTypes.Date || t2 == SimpleTypes.DateTime))
{
GetBoolResultOut = CompareAsDateTime;
return(true);
}
if (t1 == SimpleTypes.Time && t2 == SimpleTypes.Time)
{
GetBoolResultOut = CompareAsTime;
return(true);
}
return(false);
}
