Enum Class RowChangeParadigm

java.lang.Object

java.lang.Enum<RowChangeParadigm>

io.trino.spi.connector.RowChangeParadigm

All Implemented Interfaces:

Serializable, Comparable<RowChangeParadigm>, Constable

public enum RowChangeParadigm
extends Enum<RowChangeParadigm>

Different connectors have different ways of representing row updates, imposed by the underlying storage systems. The Trino engine classifies these different paradigms as elements of this RowChangeParadigm enumeration, returned by ConnectorMetadata.getRowChangeParadigm(io.trino.spi.connector.ConnectorSession, io.trino.spi.connector.ConnectorTableHandle)

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CHANGE_ONLY_UPDATED_COLUMNS	A storage paradigm in which the connector can update individual columns of rows identified by a rowId.
DELETE_ROW_AND_INSERT_ROW	A paradigm that translates a changed row into a delete by rowId, and an insert of a new record, which will get a new rowId when the connector writes it out.

Method Summary

Modifier and Type	Method	Description
static RowChangeParadigm	valueOf(String name)	Returns the enum constant of this class with the specified name.
static RowChangeParadigm[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

CHANGE_ONLY_UPDATED_COLUMNS

public static final RowChangeParadigm CHANGE_ONLY_UPDATED_COLUMNS

A storage paradigm in which the connector can update individual columns of rows identified by a rowId. The corresponding merge processor class is ChangeOnlyUpdatedColumnsMergeProcessor

DELETE_ROW_AND_INSERT_ROW

public static final RowChangeParadigm DELETE_ROW_AND_INSERT_ROW

A paradigm that translates a changed row into a delete by rowId, and an insert of a new record, which will get a new rowId when the connector writes it out. The corresponding merge processor class is DeleteAndInsertMergeProcessor.

Method Details

values

public static RowChangeParadigm[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static RowChangeParadigm valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null