io.delta.kernel.internal.actions

Class DomainMetadata

Object

io.delta.kernel.internal.actions.DomainMetadata

public class DomainMetadata
extends Object

Delta log action representing an `DomainMetadata` action

Field Summary

Fields

Modifier and Type	Field and Description
static StructType	FULL_SCHEMA Full schema of the DomainMetadata action in the Delta Log.

Constructor Summary

Constructors

Constructor and Description
DomainMetadata(String domain, String configuration, boolean removed) The domain metadata action contains a configuration string for a named metadata domain.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
static DomainMetadata	fromColumnVector(ColumnVector vector, int rowId)
static DomainMetadata	fromRow(Row row) Creates a DomainMetadata instance from a Row with the schema being FULL_SCHEMA.
String	getConfiguration()
String	getDomain()
int	hashCode()
boolean	isRemoved()
Row	toRow() Encode as a Row object with the schema FULL_SCHEMA.
String	toString()

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

FULL_SCHEMA

public static final StructType FULL_SCHEMA

Full schema of the DomainMetadata action in the Delta Log.

Constructor Detail

DomainMetadata

public DomainMetadata(String domain,
                      String configuration,
                      boolean removed)

The domain metadata action contains a configuration string for a named metadata domain. Two overlapping transactions conflict if they both contain a domain metadata action for the same metadata domain. Per-domain conflict resolution logic can be implemented.

Parameters:

domain - A string used to identify a specific domain.

configuration - A string containing configuration for the metadata domain.

removed - If it is true it serves as a tombstone to logically delete a DomainMetadata action.

Method Detail

fromColumnVector

public static DomainMetadata fromColumnVector(ColumnVector vector,
                                              int rowId)

fromRow

public static DomainMetadata fromRow(Row row)

Creates a DomainMetadata instance from a Row with the schema being FULL_SCHEMA.

Parameters:

row - the Row object containing the DomainMetadata action

Returns:

a DomainMetadata instance or null if the row is null

Throws:

IllegalArgumentException - if the schema of the row does not match FULL_SCHEMA

getDomain

public String getDomain()

getConfiguration

public String getConfiguration()

isRemoved

public boolean isRemoved()

toRow

public Row toRow()

Encode as a Row object with the schema FULL_SCHEMA.

Returns:

Row object with the schema FULL_SCHEMA

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object