chore: fix typos in the executor (#2671)

* Update CloudClientExecutor.java

Fix typos in the executor.

* reformat the code.

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gyang-google

google-cloud-spanner-executor/src/main/java/com/google/cloud/executor/spanner/CloudClientExecutor.java

@@ -632,7 +632,7 @@ public void setDatabaseClient(DatabaseClient client) {
       dbClient = client;
     }
 
-    /** Return a list of serviceKeyFile column types of the given table. */
+    /** Return a list of key column types of the given table. */
     public List<com.google.spanner.v1.Type> getKeyColumnTypes(String tableName)
         throws SpannerException {
       Preconditions.checkNotNull(metadata);
@@ -2381,7 +2381,7 @@ private Status executeRead(
           String.format("Executing read %s\n%s\n", executionContext.getTransactionSeed(), action));
       List<com.google.spanner.v1.Type> typeList = new ArrayList<>();
       if (action.hasIndex()) {
-        // For index read, we assume the serviceKeyFile columns are listed at the front of the read
+        // For index read, we assume the key columns are listed at the front of the read
         // column
         // list.
         for (int i = 0; i < action.getColumnCount(); ++i) {
@@ -2900,19 +2900,19 @@ private static com.google.cloud.spanner.KeyRange keyRangeProtoToCloudKeyRange(
         // Unreachable.
       default:
         throw SpannerExceptionFactory.newSpannerException(
-            ErrorCode.INVALID_ARGUMENT, "Unrecognized serviceKeyFile range type");
+            ErrorCode.INVALID_ARGUMENT, "Unrecognized key range type");
     }
   }
 
-  /** Convert a serviceKeyFile proto(value list) to a cloud Key. */
+  /** Convert a key proto(value list) to a cloud Key. */
   private static com.google.cloud.spanner.Key keyProtoToCloudKey(
       com.google.spanner.executor.v1.ValueList keyProto, List<com.google.spanner.v1.Type> typeList)
       throws SpannerException {
     com.google.cloud.spanner.Key.Builder cloudKey = com.google.cloud.spanner.Key.newBuilder();
     if (typeList.size() < keyProto.getValueCount()) {
       throw SpannerExceptionFactory.newSpannerException(
           ErrorCode.INVALID_ARGUMENT,
-          "There's more serviceKeyFile parts in " + keyProto + " than column types in " + typeList);
+          "There's more key parts in " + keyProto + " than column types in " + typeList);
     }
 
     for (int i = 0; i < keyProto.getValueCount(); ++i) {
@@ -2934,7 +2934,7 @@ private static com.google.cloud.spanner.Key keyProtoToCloudKey(
           default:
             throw SpannerExceptionFactory.newSpannerException(
                 ErrorCode.INVALID_ARGUMENT,
-                "Unsupported null serviceKeyFile part type: " + type.getCode().name());
+                "Unsupported null key part type: " + type.getCode().name());
         }
       } else if (part.hasIntValue()) {
         cloudKey.append(part.getIntValue());
@@ -2953,8 +2953,7 @@ private static com.google.cloud.spanner.Key keyProtoToCloudKey(
             // Unreachable
           default:
             throw SpannerExceptionFactory.newSpannerException(
-                ErrorCode.INVALID_ARGUMENT,
-                "Unsupported serviceKeyFile part type: " + type.getCode().name());
+                ErrorCode.INVALID_ARGUMENT, "Unsupported key part type: " + type.getCode().name());
         }
       } else if (part.hasStringValue()) {
         if (type.getCode() == TypeCode.NUMERIC) {
@@ -2969,7 +2968,7 @@ private static com.google.cloud.spanner.Key keyProtoToCloudKey(
         cloudKey.append(dateFromDays(part.getDateDaysValue()));
       } else {
         throw SpannerExceptionFactory.newSpannerException(
-            ErrorCode.INVALID_ARGUMENT, "Unsupported serviceKeyFile part: " + part);
+            ErrorCode.INVALID_ARGUMENT, "Unsupported key part: " + part);
       }
     }
     return cloudKey.build();