Package io.debezium.transforms

Class ExtractChangedRecordState<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

java.lang.Object

io.debezium.transforms.ExtractChangedRecordState<R>

Type Parameters:

R - the subtype of ConnectRecord on which this transformation will operate

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.kafka.common.Configurable, org.apache.kafka.connect.transforms.Transformation<R>

public class ExtractChangedRecordState<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>
extends Object
implements org.apache.kafka.connect.transforms.Transformation<R>

This SMT to extract the changed and unchanged field names to Connect Headers comparing before and after value. It only works on update event.

Author:

Harvey Yue

Field Summary

Fields

Modifier and Type	Field	Description
private org.apache.kafka.connect.data.Schema	changedSchema
static final Field	HEADER_CHANGED_NAME
static final Field	HEADER_UNCHANGED_NAME
private String	headerChangedName
private String	headerUnchangedName
private SmtManager<R>	smtManager
private org.apache.kafka.connect.data.Schema	unchangedSchema

Constructor Summary

Constructors

Constructor	Description
ExtractChangedRecordState()

Method Summary

Modifier and Type	Method	Description
R	apply(R record)
void	close()
org.apache.kafka.common.config.ConfigDef	config()
void	configure(Map<String,?> configs)

Methods inherited from class java.lang.Object

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

Field Details

HEADER_CHANGED_NAME

public static final Field HEADER_CHANGED_NAME

HEADER_UNCHANGED_NAME

public static final Field HEADER_UNCHANGED_NAME

headerChangedName

private String headerChangedName

headerUnchangedName

private String headerUnchangedName

changedSchema

private org.apache.kafka.connect.data.Schema changedSchema

unchangedSchema

private org.apache.kafka.connect.data.Schema unchangedSchema

smtManager

private SmtManager<R extends org.apache.kafka.connect.connector.ConnectRecord<R>> smtManager

Constructor Details

ExtractChangedRecordState

public ExtractChangedRecordState()

Method Details

configure

public void configure(Map<String,?> configs)

Specified by:

configure in interface org.apache.kafka.common.Configurable

apply

public R apply(R record)

Specified by:

apply in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

config

public org.apache.kafka.common.config.ConfigDef config()

Specified by:

config in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>