public ValueTask <object> ExecuteScalar(string sql, SqlParameters sqlParameters, HttpContext httpContext)
{
CustomMetadataStore customMetadataStore = new CustomMetadataStore();
return(_sqlExecutor.ExecuteScalar(sql, sqlParameters, new TableResolverData(
httpContext,
_serviceProvider,
customMetadataStore)));
}
public async ValueTask <Transport.QueryResult> Execute(string sql, SqlParameters sqlParameters, HttpContext httpContext)
{
_logger.LogInformation("Executing query: " + sql);
foreach (var header in httpContext.Request.Headers)
{
if (header.Key.StartsWith("P_", StringComparison.OrdinalIgnoreCase))
{
var parameterName = header.Key.Substring(2);
if (header.Value.Count > 1)
{
throw new SqlErrorException("Two parameters found with the same name in the http headers.");
}
var value = header.Value.First();
// URL decode
value = HttpUtility.UrlDecode(value, Encoding.UTF8);
sqlParameters.Add(SqlParameter.Create(parameterName, value));
}
}
//Parse the sql
var sqlTree = _sqlParser.Parse(sql, out var errors);
//Check for parsing errors
if (errors.Count > 0)
{
throw new SqlErrorException(errors.First().Message);
}
//Apply the row level security filter on the query
await RowLevelSecurityHelper.ApplyRowLevelSecurity(sqlTree, httpContext, _metadataStore, _serviceProvider);
//Only calculate the sql after the row level security if logging level is debug
_logger.LogConditionally(LogLevel.Debug, logger => logger.LogDebug($"Sql after row level security: {sqlTree.Print()}"));
CustomMetadataStore customMetadataStore = new CustomMetadataStore();
var result = await _sqlExecutor.Execute(sqlTree, sqlParameters, new TableResolverData(
httpContext,
_serviceProvider,
customMetadataStore)).ConfigureAwait(false);
var columnsBuilder = ImmutableList.CreateBuilder <Transport.Column>();
foreach (var column in result.Columns)
{
if (!_metadataStore.TryGetTypeColumns(column.Type, out var columns))
{
columns = new List <TableColumn>();
}
var childrenList = ImmutableList.CreateBuilder <Transport.Column>();
foreach (var child in columns)
{
childrenList.Add(GetTransportColumn(child));
}
var(columnType, nullable) = ColumnTypeHelper.GetKoraliumType(column.Type);
columnsBuilder.Add(new Transport.Column(column.Name, column.Type, column.GetFunction, childrenList.ToImmutable(), columnType, nullable));
}
return(new Transport.QueryResult(
result.Result,
columnsBuilder.ToImmutable(),
customMetadataStore.GetMetadataValues().Select(x => new KeyValuePair <string, string>(x.Key, x.Value.ToString()))
));
}