Package org.apache.kafka.common.serialization

Class StringDeserializer

java.lang.Object

org.apache.kafka.common.serialization.StringDeserializer

All Implemented Interfaces:

Closeable, AutoCloseable, Deserializer<String>

public class StringDeserializer
extends Object
implements Deserializer<String>

String encoding defaults to UTF8 and can be customized by setting the property key.deserializer.encoding, value.deserializer.encoding or deserializer.encoding. The first two take precedence over the last.

Constructor Summary

Constructors

Constructor	Description
StringDeserializer()

Method Summary

Modifier and Type	Method	Description
void	configure(Map<String,?> configs, boolean isKey)	Configure this class.
String	deserialize(String topic, byte[] data)	Deserialize a record value from a byte array into a value or object.
String	deserialize(String topic, Headers headers, ByteBuffer data)	Deserialize a record value from a ByteBuffer into a value or object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kafka.common.serialization.Deserializer

close, deserialize

Constructor Detail

StringDeserializer

public StringDeserializer()

Method Detail

configure

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

Description copied from interface: Deserializer

Configure this class.

Specified by:

configure in interface Deserializer<String>

Parameters:

configs - configs in key/value pairs

isKey - whether is for key or value

deserialize

public String deserialize(String topic,
                          byte[] data)

Description copied from interface: Deserializer

Deserialize a record value from a byte array into a value or object.

Specified by:

deserialize in interface Deserializer<String>

Parameters:

topic - topic associated with the data

data - serialized bytes; may be null; implementations are recommended to handle null by returning a value or null rather than throwing an exception.

Returns:

deserialized typed data; may be null

deserialize

public String deserialize(String topic,
                          Headers headers,
                          ByteBuffer data)

Description copied from interface: Deserializer

Deserialize a record value from a ByteBuffer into a value or object.

Specified by:

deserialize in interface Deserializer<String>

Parameters:

topic - topic associated with the data

headers - headers associated with the record; may be empty.

data - serialized ByteBuffer; may be null; implementations are recommended to handle null by returning a value or null rather than throwing an exception.

Returns:

deserialized typed data; may be null