private IList <TableColumnDesc> ValidateExpressions(
IList <CreateTableColumn> columns,
EPServicesContext services,
StatementContext statementContext)
{
ISet <string> columnNames = new HashSet <string>();
IList <TableColumnDesc> descriptors = new List <TableColumnDesc>();
var positionInDeclaration = 0;
foreach (var column in columns)
{
var msgprefix = "For column '" + column.ColumnName + "'";
// check duplicate name
if (columnNames.Contains(column.ColumnName))
{
throw new ExprValidationException("Column '" + column.ColumnName + "' is listed more than once");
}
columnNames.Add(column.ColumnName);
// determine presence of type annotation
var optionalEventType = ValidateExpressionGetEventType(msgprefix, column.Annotations, services.EventAdapterService);
// aggregation node
TableColumnDesc descriptor;
if (column.OptExpression != null)
{
var validated = ValidateAggregationExpr(column.OptExpression, optionalEventType, services, statementContext);
descriptor = new TableColumnDescAgg(positionInDeclaration, column.ColumnName, validated, optionalEventType);
}
else
{
var unresolvedType = EventTypeUtility.BuildType(
new ColumnDesc(
column.ColumnName,
column.OptTypeName,
column.OptTypeIsArray ?? false,
column.OptTypeIsPrimitiveArray ?? false),
services.EngineImportService);
descriptor = new TableColumnDescTyped(
positionInDeclaration, column.ColumnName, unresolvedType, column.PrimaryKey ?? false);
}
descriptors.Add(descriptor);
positionInDeclaration++;
}
return(descriptors);
}
private compat.collections.Pair<IList<TableColumnDesc>, IList<StmtClassForgeableFactory>> ValidateExpressions(
IList<CreateTableColumn> columns,
StatementCompileTimeServices services)
{
ISet<string> columnNames = new HashSet<string>();
IList<TableColumnDesc> descriptors = new List<TableColumnDesc>();
var positionInDeclaration = 0;
var additionalForgeables = new List<StmtClassForgeableFactory>();
foreach (var column in columns) {
var msgprefix = "For column '" + column.ColumnName + "'";
// check duplicate name
if (columnNames.Contains(column.ColumnName)) {
throw new ExprValidationException("Column '" + column.ColumnName + "' is listed more than once");
}
columnNames.Add(column.ColumnName);
// determine presence of type annotation
var optionalEventType = ValidateExpressionGetEventType(msgprefix, column.Annotations, services);
// aggregation node
TableColumnDesc descriptor;
if (column.OptExpression != null) {
var pair = ValidateAggregationExpr(column.OptExpression, optionalEventType, services);
descriptor = new TableColumnDescAgg(positionInDeclaration, column.ColumnName, pair.First, optionalEventType);
additionalForgeables.AddRange(pair.Second);
}
else {
var unresolvedType = EventTypeUtility.BuildType(
new ColumnDesc(column.ColumnName, column.OptType.ToEPL()),
services.ImportServiceCompileTime);
descriptor = new TableColumnDescTyped(
positionInDeclaration,
column.ColumnName,
unresolvedType,
column.PrimaryKey.GetValueOrDefault(false));
}
descriptors.Add(descriptor);
positionInDeclaration++;
}
return new compat.collections.Pair<IList<TableColumnDesc>, IList<StmtClassForgeableFactory>>(descriptors, additionalForgeables);
}
