org.apache.drill.metastore.iceberg.operate

Class IcebergMetadata

java.lang.Object

org.apache.drill.metastore.iceberg.operate.IcebergMetadata

All Implemented Interfaces:

Metadata

public class IcebergMetadata
extends Object
implements Metadata

Implementation of Metadata interface. Provides information about current Metastore component version and its properties.

Field Summary

Fields inherited from interface org.apache.drill.metastore.operate.Metadata

UNDEFINED

Constructor Summary

Constructors

Constructor and Description
IcebergMetadata(org.apache.iceberg.Table table)

Method Summary

Modifier and Type	Method and Description
Map<String,String>	properties() Depending on Metastore component implementation, it may have properties.
boolean	supportsVersioning() Indicates if Metastore component supports versioning, i.e.
long	version() Depending on Metastore component implementation, it may have version which can be used to determine if anything has changed during last call to the Metastore component.

Methods inherited from class java.lang.Object

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

Constructor Detail

IcebergMetadata

public IcebergMetadata(org.apache.iceberg.Table table)

Method Detail

supportsVersioning

public boolean supportsVersioning()

Description copied from interface: Metadata

Indicates if Metastore component supports versioning, i.e. Metastore component version is changed each time write operation is executed.

Specified by:

supportsVersioning in interface Metadata

Returns:

true if Metastore component supports versioning, false otherwise

version

public long version()

Description copied from interface: Metadata

Depending on Metastore component implementation, it may have version which can be used to determine if anything has changed during last call to the Metastore component. If Metastore component implementation, supports versioning, version is changed each time Metastore component data has changed. Metadata.supportsVersioning() indicates if Metastore component supports versioning. If versioning is not supported, Metadata.UNDEFINED is returned.

Specified by:

version in interface Metadata

Returns:

current metastore version

properties

public Map<String,String> properties()

Description copied from interface: Metadata

Depending on Metastore component implementation, it may have properties. If Metastore component supports properties, map with properties names and values are returned, otherwise empty map is returned.

Specified by:

properties in interface Metadata

Returns:

Metastore component implementation properties