public static (string dataType, bool?isHashKey) VisitColumnDefinition(ColumnDefinitionContext context)
{
bool?isHashKey = null;
if (context.columnConstraint() != null)
{
isHashKey = IsHashKey(context.columnConstraint());
}
return(context.dataType().GetText(), isHashKey);
}
/// <summary>
/// Get Column detail from context
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public static (string dataTypeName, int?dataLength, bool unsigned) ExtractColumnDataDefinition(this ColumnDefinitionContext context)
{
if (context == null)
{
throw new ArgumentOutOfRangeException($"{nameof(context)} is null");
}
// Normal route: id binary(16) NOT NULL
var dimensionDataContext = context.GetChild <DimensionDataTypeContext>(0);
if (dimensionDataContext != null)
{
return(ExtractColumnData(dimensionDataContext));
}
// get dimension data from string: char(32)
var stringDataContext = context.GetChild <StringDataTypeContext>(0);
if (stringDataContext != null)
{
return(ExtractColumnData(stringDataContext));
}
// get special Datatype `SERIAL`.
var simpleDataTypeContext = context.GetChild <SimpleDataTypeContext>();
if (simpleDataTypeContext != null)
{
return(ExtractColumnData(simpleDataTypeContext));
}
throw new ArgumentOutOfRangeException($"Could not retrieve column detail from {nameof(context)}");
}
