org.apache.drill.metastore.iceberg.components.tables

Class TablesOperationTransformer

java.lang.Object

org.apache.drill.metastore.iceberg.transform.OperationTransformer<TableMetadataUnit>

org.apache.drill.metastore.iceberg.components.tables.TablesOperationTransformer

public class TablesOperationTransformer
extends OperationTransformer<TableMetadataUnit>

Metastore Tables component operations transformer that provides mechanism to convert TableMetadataUnit data to Metastore overwrite / delete operations.

Field Summary

Fields inherited from class org.apache.drill.metastore.iceberg.transform.OperationTransformer

context

Constructor Summary

Constructors

Constructor and Description
TablesOperationTransformer(IcebergMetastoreContext<TableMetadataUnit> context)

Method Summary

Modifier and Type	Method and Description
List<Overwrite>	toOverwrite(List<TableMetadataUnit> units) Groups given list of TableMetadataUnit based on table key (storage plugin, workspace and table name), each table key is grouped by metadata key.

Methods inherited from class org.apache.drill.metastore.iceberg.transform.OperationTransformer

toDelete, toDelete, toOverwrite

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TablesOperationTransformer

public TablesOperationTransformer(IcebergMetastoreContext<TableMetadataUnit> context)

Method Detail

toOverwrite

public List<Overwrite> toOverwrite(List<TableMetadataUnit> units)

Groups given list of TableMetadataUnit based on table key (storage plugin, workspace and table name), each table key is grouped by metadata key. Each group is converted into overwrite operation.

Specified by:

toOverwrite in class OperationTransformer<TableMetadataUnit>

Parameters:

units - Metastore component units

Returns:

list of overwrite operations