fhueske commented on a change in pull request #6508: [Flink-10079] [table]
Support external sink table in the INSERT INTO clause
URL: https://github.com/apache/flink/pull/6508#discussion_r218205508
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/TableEnvironment.scala
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@@ -828,12 +831,28 @@ abstract class TableEnvironment(val config: TableConfig)
{
rootSchema.getTableNames.contains(name)
}
- protected def getTable(name: String): org.apache.calcite.schema.Table = {
- rootSchema.getTable(name)
- }
+ /**
+ * Get a table from either internal or external catalogs.
+ *
+ * @param name The name of the table.
+ * @return The table registered either internally or externally, None
otherwise.
+ */
+ protected def getTable(name: String):
Option[org.apache.calcite.schema.Table] = {
+ val internalTable = rootSchema.getTable(name)
- protected def getRowType(name: String): RelDataType = {
- rootSchema.getTable(name).getRowType(typeFactory)
+ if (internalTable != null) {
+ Some(internalTable)
+ } else {
+ // search external catalogs
+ var (subSchema, tableName) = (rootSchema, name)
+ while (tableName.contains(".")) {
+ val Array(subcatalog, table) = tableName.split("\\.", 2)
+ subSchema = subSchema.getSubSchema(subcatalog)
Review comment:
We need to check for `subSchema != null` to prevent an NPE if a subschema
does not exist.
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