Package io.debezium.relational

Class Key

java.lang.Object

io.debezium.relational.Key

@Immutable
public class Key
extends Object

An immutable definition of a table's key. By default, the key will be comprised of the primary key column(s). A key can be customized with a KeyMapper.

Author:

Guillaume Rosauro

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Key.Builder
static class	Key.CustomKeyMapper	Custom Key mapper used to override or defining a custom Key
private static class	Key.IdentityKeyMapper	Default Key mapper using PK as key.
static interface	Key.KeyMapper	Provides the column(s) that should be used within the message key for a given table.

Field Summary

Fields

Modifier and Type	Field	Description
private final Key.KeyMapper	keyMapper
private final Table	table

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Key(Table table, Key.KeyMapper keyMapper)

Method Summary

Modifier and Type	Method	Description
List<Column>	keyColumns()
private static boolean	matchColumn(Selectors.TableIdToStringMapper tableIdMapper, Table table, Predicate<ColumnId> predicate, Column c)

Methods inherited from class java.lang.Object

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

Field Details

table

private final Table table

keyMapper

private final Key.KeyMapper keyMapper

Constructor Details

Key

private Key(Table table,
 Key.KeyMapper keyMapper)

Method Details

keyColumns

public List<Column> keyColumns()

Returns:

the columns Column taking part of the key.

matchColumn

private static boolean matchColumn(Selectors.TableIdToStringMapper tableIdMapper,
 Table table,
 Predicate<ColumnId> predicate,
 Column c)