org.apache.kafka.connect.storage

Class StringConverter

java.lang.Object

org.apache.kafka.connect.storage.StringConverter

All Implemented Interfaces:

Converter

public class StringConverter
extends Object
implements Converter

Converter implementation that only supports serializing to strings. When converting Kafka Connect data to bytes, the schema will be ignored and Object.toString() will always be invoked to convert the data to a String. When converting from bytes to Kafka Connect format, the converter will only ever return an optional string schema and a string or null. Encoding configuration is identical to StringSerializer and StringDeserializer, but for convenience this class can also be configured to use the same encoding for both encoding and decoding with the converter.encoding setting.

Constructor Summary

Constructors

Constructor and Description
StringConverter()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(Map<String,?> configs, boolean isKey) Configure this class.
byte[]	fromConnectData(String topic, Schema schema, Object value) Convert a Kafka Connect data object to a native object for serialization.
SchemaAndValue	toConnectData(String topic, byte[] value) Convert a native object to a Kafka Connect data object.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringConverter

public StringConverter()

Method Detail

configure

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

Description copied from interface: Converter

Configure this class.

Specified by:

configure in interface Converter

Parameters:

configs - configs in key/value pairs

isKey - whether is for key or value

fromConnectData

public byte[] fromConnectData(String topic,
                     Schema schema,
                     Object value)

Description copied from interface: Converter

Convert a Kafka Connect data object to a native object for serialization.

Specified by:

fromConnectData in interface Converter

Parameters:

topic - the topic associated with the data

schema - the schema for the value

value - the value to convert

Returns:

the serialized value

toConnectData

public SchemaAndValue toConnectData(String topic,
                           byte[] value)

Description copied from interface: Converter

Convert a native object to a Kafka Connect data object.

Specified by:

toConnectData in interface Converter

Parameters:

topic - the topic associated with the data

value - the value to convert

Returns:

an object containing the Schema and the converted value