Remove SupportFormat

gluten-core/src/main/scala/io/glutenproject/execution/BaseDataSource.scala

@@ -16,12 +16,10 @@
  */
 package io.glutenproject.execution
 
-import io.glutenproject.substrait.SupportFormat
-
 import org.apache.spark.sql.connector.read.InputPartition
 import org.apache.spark.sql.types.StructType
 
-trait BaseDataSource extends SupportFormat {
+trait BaseDataSource {
 
   /** Returns the actual schema of this data source scan. */
   def getDataSchema: StructType

gluten-core/src/main/scala/io/glutenproject/execution/BasicScanExecTransformer.scala

@@ -27,18 +27,21 @@ import io.glutenproject.substrait.rel.{ReadRelNode, RelBuilder, SplitInfo}
 import org.apache.spark.rdd.RDD
 import org.apache.spark.sql.catalyst.expressions.{And, Attribute, Expression}
 import org.apache.spark.sql.vectorized.ColumnarBatch
-
 import com.google.common.collect.Lists
-
 import scala.collection.JavaConverters._
 
+import io.glutenproject.substrait.rel.LocalFilesNode.ReadFileFormat
+
 trait BasicScanExecTransformer extends LeafTransformSupport with BaseDataSource {
 
   /** Returns the filters that can be pushed down to native file scan */
   def filterExprs(): Seq[Expression]
 
   def outputAttributes(): Seq[Attribute]
 
+  /** This can be used to report FileFormat for a file based scan operator. */
+  val fileFormat: ReadFileFormat
+
   // TODO: Remove this expensive call when CH support scan custom partition location.
   def getInputFilePaths: Seq[String] = {
     // This is a heavy operation, and only the required backend executes the corresponding logic.