protected override string BuildValue(QConst value)
{
object constValue = value.Value;
// do not use parameter for nulls (type param cannot be determined by null)
if (constValue == null && !(value is QVar))
{
return("NULL");
}
// all non-null constants are passed as parameters
var cmdParam = DbFactory.AddCommandParameter(Command, constValue);
if (value is QVar)
{
cmdParam.Parameter.SourceColumn = ((QVar)value).Name;
}
return(cmdParam.Placeholder);
}
protected override string BuildValue(QConst value)
{
object constValue = value.Value;
// keep special processing for lists
if (constValue is IList)
{
return(BuildValue((IList)constValue));
}
// all constants are passed as parameters
var cmdParam = DbFactory.AddCommandParameter(Command, constValue);
if (value is QVar)
{
cmdParam.Parameter.SourceColumn = ((QVar)value).Name;
}
return(cmdParam.Placeholder);
}
protected override string BuildValue(string str)
{
return(DbFactory.AddCommandParameter(Command, str).Placeholder);
}