Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/12601#discussion_r76512050
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcRelationProvider.scala
---
@@ -19,37 +19,100 @@ package org.apache.spark.sql.execution.datasources.jdbc
import java.util.Properties
-import org.apache.spark.sql.SQLContext
-import org.apache.spark.sql.sources.{BaseRelation, DataSourceRegister,
RelationProvider}
+import org.apache.spark.sql.{DataFrame, SaveMode, SQLContext}
+import org.apache.spark.sql.sources.{BaseRelation,
CreatableRelationProvider, DataSourceRegister, RelationProvider,
SchemaRelationProvider}
+import org.apache.spark.sql.types.StructType
-class JdbcRelationProvider extends RelationProvider with
DataSourceRegister {
+class JdbcRelationProvider extends CreatableRelationProvider
+ with SchemaRelationProvider with RelationProvider with
DataSourceRegister {
override def shortName(): String = "jdbc"
- /** Returns a new base relation with the given parameters. */
override def createRelation(
sqlContext: SQLContext,
parameters: Map[String, String]): BaseRelation = {
+ createRelation(sqlContext, parameters, null)
+ }
+
+ /** Returns a new base relation with the given parameters. */
+ override def createRelation(
--- End diff --
Is this a separate method instead of using an optional arg to try to retain
binary compatibility?
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