Strict table expectation on export API

Author: Michel Davit

scio-google-cloud-platform/src/main/scala/com/spotify/scio/bigquery/BigQueryTypes.scala

@@ -130,6 +130,22 @@ case class Table private (ref: GTableReference, filter: Option[Table.Filter]) ex
 }
 
 object Table {
+
+  /**
+   * @param selectedFields
+   *   names of the fields in the table that should be read. If empty, all fields will be read. If
+   *   the specified field is a nested field, all the sub-fields in the field will be selected.
+   *   Fields will always appear in the generated class in the same order as they appear in the
+   *   table, regardless of the order specified in selectedFields.
+   * @param rowRestriction
+   *   SQL text filtering statement, similar ti a WHERE clause in a query. Currently, we support
+   *   combinations of predicates that are a comparison between a column and a constant value in SQL
+   *   statement. Aggregates are not supported. For example:
+   *
+   * {{{
+   *   "a > DATE '2014-09-27' AND (b > 5 AND c LIKE 'date')"
+   * }}}
+   */
   final case class Filter(
     selectedFields: List[String],
     rowRestriction: Option[String]

scio-google-cloud-platform/src/main/scala/com/spotify/scio/bigquery/syntax/ScioContextSyntax.scala

@@ -30,15 +30,9 @@ import org.apache.beam.sdk.io.Compression
 import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO.TypedRead.Method
 import org.apache.beam.sdk.io.fs.EmptyMatchTreatment
 import org.apache.beam.sdk.transforms.errorhandling.{BadRecord, ErrorHandler}
-import org.slf4j.{Logger, LoggerFactory}
-
-object ScioContextOps {
-  @transient private lazy val logger: Logger = LoggerFactory.getLogger(this.getClass)
-}
 
 /** Enhanced version of [[ScioContext]] with BigQuery methods. */
 final class ScioContextOps(private val self: ScioContext) extends AnyVal {
-  import ScioContextOps._
 
   /**
    * Get an SCollection for a BigQuery SELECT query. Both
@@ -85,13 +79,10 @@ final class ScioContextOps(private val self: ScioContext) extends AnyVal {
     configOverride: BigQueryIO.ReadParam.ConfigOverride[TableRow] =
       BigQueryIO.ReadParam.DefaultConfigOverride
   ): SCollection[TableRow] = {
-    if (table.filter.nonEmpty) {
-      logger.warn(
-        "Using filtered table with standard API. " +
-          "selectedFields and rowRestriction are ignored. " +
-          "Use bigQueryStorage instead"
-      )
-    }
+    require(
+      table.filter.isEmpty,
+      "Cannot use filtered table with standard API. Use bigQueryStorage instead"
+    )
     val params = BigQueryIO.TableReadParam(
       BigQueryIO.Format.Default(),
       Method.DEFAULT,
@@ -107,13 +98,10 @@ final class ScioContextOps(private val self: ScioContext) extends AnyVal {
     configOverride: BigQueryIO.ReadParam.ConfigOverride[T] =
       BigQueryIO.ReadParam.DefaultConfigOverride
   ): SCollection[T] = {
-    if (table.filter.nonEmpty) {
-      logger.warn(
-        "Using filtered table with standard API. " +
-          "selectedFields and rowRestriction are ignored. " +
-          "Use bigQueryStorage instead"
-      )
-    }
+    require(
+      table.filter.isEmpty,
+      "Cannot use filtered table with standard API. Use bigQueryStorage instead"
+    )
     val params = BigQueryIO.TableReadParam(
       format,
       Method.DEFAULT,
@@ -123,23 +111,6 @@ final class ScioContextOps(private val self: ScioContext) extends AnyVal {
     self.read(BigQueryIO[T](table))(params)
   }
 
-  /**
-   * Get an SCollection for a BigQuery table using the storage API.
-   *
-   * @param selectedFields
-   *   names of the fields in the table that should be read. If empty, all fields will be read. If
-   *   the specified field is a nested field, all the sub-fields in the field will be selected.
-   *   Fields will always appear in the generated class in the same order as they appear in the
-   *   table, regardless of the order specified in selectedFields.
-   * @param rowRestriction
-   *   SQL text filtering statement, similar ti a WHERE clause in a query. Currently, we support
-   *   combinations of predicates that are a comparison between a column and a constant value in SQL
-   *   statement. Aggregates are not supported. For example:
-   *
-   * {{{
-   * "a > DATE '2014-09-27' AND (b > 5 AND c LIKE 'date')"
-   * }}}
-   */
   def bigQueryStorage(
     table: Table,
     errorHandler: ErrorHandler[BadRecord, _] = BigQueryIO.ReadParam.DefaultErrorHandler,