[SPARK-52770][CONNECT] Support TIME type in connect proto

Author: peter-toth

sql/connect/common/src/main/protobuf/spark/connect/types.proto

@@ -69,6 +69,8 @@ message DataType {
 
     // UnparsedDataType
     Unparsed unparsed = 24;
+
+    Time time = 28;
   }
 
   // Reserved for geometry and geography types
@@ -127,6 +129,11 @@ message DataType {
     uint32 type_variation_reference = 1;
   }
 
+  message Time {
+    int32 precision = 1;
+    uint32 type_variation_reference = 2;
+  }
+
   message CalendarInterval {
     uint32 type_variation_reference = 1;
   }

sql/connect/common/src/main/scala/org/apache/spark/sql/connect/common/DataTypeProtoConverter.scala

@@ -53,6 +53,7 @@ object DataTypeProtoConverter {
       case proto.DataType.KindCase.DATE => DateType
       case proto.DataType.KindCase.TIMESTAMP => TimestampType
       case proto.DataType.KindCase.TIMESTAMP_NTZ => TimestampNTZType
+      case proto.DataType.KindCase.TIME => TimeType(t.getTime.getPrecision)
 
       case proto.DataType.KindCase.CALENDAR_INTERVAL => CalendarIntervalType
       case proto.DataType.KindCase.YEAR_MONTH_INTERVAL =>
@@ -204,6 +205,12 @@ object DataTypeProtoConverter {
 
       case TimestampNTZType => ProtoDataTypes.TimestampNTZType
 
+      case TimeType(precision) =>
+        proto.DataType
+          .newBuilder()
+          .setTime(proto.DataType.Time.newBuilder().setPrecision(precision).build())
+          .build()
+
       case CalendarIntervalType => ProtoDataTypes.CalendarIntervalType
 
       case YearMonthIntervalType(startField, endField) =>