private ExplorerItem CreateFunctionExplorerItem(FunctionData func, List <FunctionArgumentInfo> paramTypes)
{
var paramExplorerItems = paramTypes.Select(x =>
{
var itemText = $"{x.Name} ({x.Type?.Name ?? $"unknown type: {x.DbTypeName}"})";
return(new ExplorerItem(itemText, ExplorerItemKind.Parameter, ExplorerIcon.Parameter));
}).ToList();
var funcType = func.IsMultiValueReturn ? ExplorerIcon.TableFunction : ExplorerIcon.ScalarFunction;
var explorerItem = new ExplorerItem(func.Name, ExplorerItemKind.QueryableObject, funcType)
{
IsEnumerable = true,
Children = paramExplorerItems
};
return(explorerItem);
}
private FunctionReturnTypeInfo DetermineReturnType(FunctionData func)
{
var funcReturnTypeInfo = new FunctionReturnTypeInfo();
var mappedReturnType = SqlHelper.MapDbTypeToType(func.ReturnType, null, false, false);
if (mappedReturnType != null)
{
funcReturnTypeInfo.ElementType = mappedReturnType;
if (func.IsMultiValueReturn)
{
funcReturnTypeInfo.CollectionType = typeof(IEnumerable <>).MakeGenericType(mappedReturnType);
}
}
if (mappedReturnType == null)
{
var userTypeName = cxInfo.GetTypeName(func.ReturnType);
// ToDo | add schema support for functions
mappedReturnType = moduleBuilder.GetType($"{nameSpace}.public.{userTypeName}");
if (mappedReturnType != null)
{
funcReturnTypeInfo.ExistsAsTable = true;
funcReturnTypeInfo.ElementType = mappedReturnType;
funcReturnTypeInfo.CollectionType = typeof(ITable <>).MakeGenericType(mappedReturnType);
}
}
if (mappedReturnType == null)
{
mappedReturnType = typeof(ExpandoObject);
funcReturnTypeInfo.ElementType = mappedReturnType;
funcReturnTypeInfo.CollectionType = typeof(IEnumerable <>).MakeGenericType(mappedReturnType);
}
return(funcReturnTypeInfo);
}
private FunctionReturnTypeInfo DetermineReturnType(FunctionData func)
{
var funcReturnTypeInfo = new FunctionReturnTypeInfo();
var mappedReturnType = SqlHelper.MapDbTypeToType(func.ReturnType, null, false, false);
if (mappedReturnType != null)
{
funcReturnTypeInfo.ElementType = mappedReturnType;
if (func.IsMultiValueReturn)
{
funcReturnTypeInfo.CollectionType = typeof(IEnumerable<>).MakeGenericType(mappedReturnType);
}
}
if (mappedReturnType == null)
{
var userTypeName = cxInfo.GetTypeName(func.ReturnType);
mappedReturnType = moduleBuilder.GetType($"{nameSpace}.{userTypeName}");
if (mappedReturnType != null)
{
funcReturnTypeInfo.ExistsAsTable = true;
funcReturnTypeInfo.ElementType = mappedReturnType;
funcReturnTypeInfo.CollectionType = typeof(ITable<>).MakeGenericType(mappedReturnType);
}
}
if (mappedReturnType == null)
{
mappedReturnType = typeof(ExpandoObject);
funcReturnTypeInfo.ElementType = mappedReturnType;
funcReturnTypeInfo.CollectionType = typeof(IEnumerable<>).MakeGenericType(mappedReturnType);
}
return funcReturnTypeInfo;
}
private ExplorerItem CreateFunctionExplorerItem(FunctionData func, List<FunctionArgumentInfo> paramTypes)
{
var paramExplorerItems = paramTypes.Select(x =>
{
var itemText = $"{x.Name} ({x.Type?.Name ?? $"unknown type: {x.DbTypeName}"})";
return new ExplorerItem(itemText, ExplorerItemKind.Parameter, ExplorerIcon.Parameter);
}).ToList();
var funcType = func.IsMultiValueReturn ? ExplorerIcon.TableFunction : ExplorerIcon.ScalarFunction;
var explorerItem = new ExplorerItem(func.Name, ExplorerItemKind.QueryableObject, funcType)
{
IsEnumerable = true,
Children = paramExplorerItems
};
return explorerItem;
}
private List<FunctionArgumentInfo> GetFunctionArgumentInfos(FunctionData func)
{
Dictionary<int, string> argumentTypes;
if (func.ArgumentTypeOids.Any())
{
argumentTypes = connection.Query(SqlHelper.LoadSql("QueryTypeByOid.sql").Replace("@oids", string.Join(",", func.ArgumentTypeOids)))
.ToDictionary(x => (int)x.oid, x => (string)x.typname);
}
else
{
argumentTypes = new Dictionary<int, string>();
}
var paramTypes = new List<FunctionArgumentInfo>();
for (int i = 0; i < func.ArgumentCount; i++)
{
var argName = func.ArgumentNames?[i];
var argType = argumentTypes[func.ArgumentTypeOids[i]];
Type mappedArgType;
if (!TryMapToExistingType(argType, out mappedArgType))
{
TryCreateUserDefinedType(argType, out mappedArgType);
}
paramTypes.Add(new FunctionArgumentInfo { Index = i, Name = argName, Type = mappedArgType, DbTypeName = argType});
}
return paramTypes;
}