feat(csharp): make DriverName virtual in SparkConnection to enable driver-specific identification (#3893)

msrathore-db · web-flow · commit afbcedd6bafe · 2026-01-14T06:57:07.000-08:00
## Summary Converts `DriverName` from a constant to a virtual property in `SparkConnection`, enabling derived drivers (Databricks) to properly identify themselves in GetInfo API responses and User-Agent headers. Associated PR: [https://github.com/adbc-drivers/databricks/pull/127](https://github.com/adbc-drivers/databricks/pull/127)
diff --git a/csharp/src/Drivers/Apache/Spark/SparkConnection.cs b/csharp/src/Drivers/Apache/Spark/SparkConnection.cs
@@ -28,7 +28,7 @@ namespace Apache.Arrow.Adbc.Drivers.Apache.Spark
     internal abstract class SparkConnection : HiveServer2Connection
     {
         protected const string ProductVersionDefault = "1.0.0";
-        protected const string DriverName = "ADBC Spark Driver";
+        protected virtual string DriverName => "ADBC Spark Driver";
         private const string ArrowVersion = "1.0.0";
         private readonly Lazy<string> _productVersion;
 

Original file line number	Diff line number	Diff line change
`@@ -28,7 +28,7 @@ namespace Apache.Arrow.Adbc.Drivers.Apache.Spark`
`28`	`28`	`internal abstract class SparkConnection : HiveServer2Connection`
`29`	`29`	`{`
`30`	`30`	`protected const string ProductVersionDefault = "1.0.0";`
`31`		`- protected const string DriverName = "ADBC Spark Driver";`
	`31`	`+ protected virtual string DriverName => "ADBC Spark Driver";`
`32`	`32`	`private const string ArrowVersion = "1.0.0";`
`33`	`33`	`private readonly Lazy<string> _productVersion;`
`34`	`34`