io.debezium.relational.mapping

Interface ColumnMapper

All Known Implementing Classes:

MaskStrings, PropagateSourceTypeToSchemaParameter, TruncateStrings

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ColumnMapper

A factory for a function used to map values of a column.

Author:

Randall Hauch

Method Summary

Modifier and Type	Method and Description
default void	alterFieldSchema(Column column, org.apache.kafka.connect.data.SchemaBuilder schemaBuilder) Optionally annotate the schema with properties to better capture the mapping behavior.
ValueConverter	create(Column column) Create for the given column a function that maps values.
default void	initialize(Configuration config) Initialize the ColumnMapper instance based upon the connector's configuration.

Method Detail

initialize

default void initialize(Configuration config)

Initialize the ColumnMapper instance based upon the connector's configuration.

Parameters:

config - the connector's configuration

create

ValueConverter create(Column column)

Create for the given column a function that maps values.

Parameters:

column - the column description; never null

Returns:

the function that converts the value; may be null

alterFieldSchema

default void alterFieldSchema(Column column,
                              org.apache.kafka.connect.data.SchemaBuilder schemaBuilder)

Optionally annotate the schema with properties to better capture the mapping behavior.

Parameters:

column - the column definition; never null

schemaBuilder - the builder for the Field's schema; never null