org.springframework.kafka.support.serializer

Class ParseStringDeserializer<T>

java.lang.Object

org.springframework.kafka.support.serializer.ParseStringDeserializer<T>

Type Parameters:

T - class of the entity, representing messages

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.kafka.common.serialization.Deserializer<T>

public class ParseStringDeserializer<T>
extends java.lang.Object
implements org.apache.kafka.common.serialization.Deserializer<T>

Generic Deserializer for deserialization of entity from its String representation received from Kafka (a.k.a parsing).

Since:

2.5

Author:

Alexei Klenin, Gary Russell

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	KEY_PARSER Property for the key parser method.
static java.lang.String	VALUE_PARSER Property for the key parser method.

Constructor Summary

Constructors

Constructor and Description
ParseStringDeserializer() Construct an instance with no parser function; a static method name must be provided in the consumer config KEY_PARSER or VALUE_PARSER properties.
ParseStringDeserializer(java.util.function.BiFunction<java.lang.String,org.apache.kafka.common.header.Headers,T> parser) Construct an instance with the supplied parser function.
ParseStringDeserializer(java.util.function.Function<java.lang.String,T> parser) Construct an instance with the supplied parser function.

Method Summary

Modifier and Type	Method and Description
void	configure(java.util.Map<java.lang.String,?> configs, boolean isKey)
T	deserialize(java.lang.String topic, byte[] data)
T	deserialize(java.lang.String topic, org.apache.kafka.common.header.Headers headers, byte[] data)
java.nio.charset.Charset	getCharset() Get the configured charset.
java.util.function.BiFunction<java.lang.String,org.apache.kafka.common.header.Headers,T>	getParser() Get the configured parser function.
void	setCharset(java.nio.charset.Charset charset) Set a charset to use when converting byte[] to String.

Methods inherited from class java.lang.Object

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

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

close

Field Detail

KEY_PARSER

public static final java.lang.String KEY_PARSER

Property for the key parser method.

See Also:

Constant Field Values

VALUE_PARSER

public static final java.lang.String VALUE_PARSER

Property for the key parser method.

See Also:

Constant Field Values

Constructor Detail

ParseStringDeserializer

public ParseStringDeserializer()

Construct an instance with no parser function; a static method name must be provided in the consumer config KEY_PARSER or VALUE_PARSER properties.

ParseStringDeserializer

public ParseStringDeserializer(java.util.function.Function<java.lang.String,T> parser)

Construct an instance with the supplied parser function.

Parameters:

parser - the function.

ParseStringDeserializer

public ParseStringDeserializer(java.util.function.BiFunction<java.lang.String,org.apache.kafka.common.header.Headers,T> parser)

Construct an instance with the supplied parser function.

Parameters:

parser - the function.

Method Detail

configure

public void configure(java.util.Map<java.lang.String,?> configs,
                      boolean isKey)

Specified by:

configure in interface org.apache.kafka.common.serialization.Deserializer<T>

deserialize

public T deserialize(java.lang.String topic,
                     byte[] data)

Specified by:

deserialize in interface org.apache.kafka.common.serialization.Deserializer<T>

deserialize

public T deserialize(java.lang.String topic,
                     org.apache.kafka.common.header.Headers headers,
                     byte[] data)

Specified by:

deserialize in interface org.apache.kafka.common.serialization.Deserializer<T>

setCharset

public void setCharset(java.nio.charset.Charset charset)

Set a charset to use when converting byte[] to String. Default UTF-8.

Parameters:

charset - the charset.

getCharset

public java.nio.charset.Charset getCharset()

Get the configured charset.

Returns:

the charset.

getParser

public java.util.function.BiFunction<java.lang.String,org.apache.kafka.common.header.Headers,T> getParser()

Get the configured parser function.

Returns:

the function.