feat: add schema aware stream writer

google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/Exceptions.java

@@ -243,8 +243,8 @@ public String getStreamName() {
   }
 
   /**
-   * This exception is thrown from {@link JsonStreamWriter#append()} when the client side Json to
-   * Proto serializtion fails. It can also be thrown by the server in case rows contains invalid
+   * This exception is thrown from {@link SchemaAwareStreamWriter#append()} when the client side
+   * Proto serialization fails. It can also be thrown by the server in case rows contains invalid
    * data. The exception contains a Map of indexes of faulty rows and the corresponding error
    * message.
    */
@@ -363,15 +363,15 @@ protected InflightBytesLimitExceededException(String writerId, long currentLimit
     }
   }
   /**
-   * Input Json data has unknown field to the schema of the JsonStreamWriter. User can either turn
-   * on IgnoreUnknownFields option on the JsonStreamWriter, or if they don't want the error to be
-   * ignored, they should recreate the JsonStreamWriter with the updated table schema.
+   * Input data object has unknown field to the schema of the SchemaAwareStreamWriter. User can either turn
+   * on IgnoreUnknownFields option on the SchemaAwareStreamWriter, or if they don't want the error to be
+   * ignored, they should recreate the SchemaAwareStreamWriter with the updated table schema.
    */
-  public static final class JsonDataHasUnknownFieldException extends IllegalArgumentException {
+  public static final class DataHasUnknownFieldException extends IllegalArgumentException {
     private final String jsonFieldName;
 
-    protected JsonDataHasUnknownFieldException(String jsonFieldName) {
-      super(String.format("JSONObject has fields unknown to BigQuery: %s.", jsonFieldName));
+    public DataHasUnknownFieldException(String jsonFieldName) {
+      super(String.format("The source object has fields unknown to BigQuery: %s.", jsonFieldName));
       this.jsonFieldName = jsonFieldName;
     }