protected override AggregationMethodFactory ValidateAggregationChild(ExprValidationContext validationContext)
{
var positionalParams = PositionalParams;
if (positionalParams.Length == 0 || positionalParams.Length > 2)
{
throw new ExprValidationException(_minMaxTypeEnum.ToString() + " node must have either 1 or 2 parameters");
}
var child = positionalParams[0];
bool hasDataWindows;
if (_isEver)
{
hasDataWindows = false;
}
else
{
if (validationContext.ExprEvaluatorContext.StatementType == StatementType.CREATE_TABLE)
{
hasDataWindows = true;
}
else
{
hasDataWindows = ExprNodeUtility.HasRemoveStreamForAggregations(child, validationContext.StreamTypeService, validationContext.IsResettingAggregations);
}
}
if (_isFFunc)
{
if (positionalParams.Length < 2)
{
throw new ExprValidationException(_minMaxTypeEnum.ToString() + "-filtered aggregation function must have a filter expression as a second parameter");
}
base.ValidateFilter(positionalParams[1].ExprEvaluator);
}
_hasFilter = positionalParams.Length == 2;
return(validationContext.EngineImportService.AggregationFactoryFactory.MakeMinMax(
validationContext.StatementExtensionSvcContext, this, child.ExprEvaluator.ReturnType, hasDataWindows));
}
public override AggregationMethodFactory ValidateAggregationChild(ExprValidationContext validationContext)
{
if (PositionalParams.Length == 0 || PositionalParams.Length > 2)
{
throw new ExprValidationException(_minMaxTypeEnum.ToString() + " node must have either 1 or 2 parameters");
}
ExprNode child = PositionalParams[0];
bool hasDataWindows;
if (_isEver)
{
hasDataWindows = false;
}
else
{
if (validationContext.ExprEvaluatorContext.StatementType == StatementType.CREATE_TABLE)
{
hasDataWindows = true;
}
else
{
hasDataWindows = ExprNodeUtility.HasRemoveStreamForAggregations(child, validationContext.StreamTypeService, validationContext.IsResettingAggregations);
}
}
if (_hasFilter)
{
if (PositionalParams.Length < 2)
{
throw new ExprValidationException(_minMaxTypeEnum.ToString() + "-filtered aggregation function must have a filter expression as a second parameter");
}
base.ValidateFilter(PositionalParams[1].ExprEvaluator);
}
return(new ExprMinMaxAggrNodeFactory(this, child.ExprEvaluator.ReturnType, hasDataWindows));
}