StateSerdes (streams 7.7.7-ce API)

java.lang.Object
- org.apache.kafka.streams.state.StateSerdes<K,V>

Type Parameters:
K - key type of serde
V - value type of serde
```
public final class StateSerdes<K,V>
extends Object
```
Factory for creating serializers / deserializers for state stores in Kafka Streams.

Field Summary
Fields
Modifier and Type Field and Description
static int BOOLEAN_SIZE
static int TIMESTAMP_SIZE

Fields
Modifier and Type	Field and Description
`static int`	`BOOLEAN_SIZE`
`static int`	`TIMESTAMP_SIZE`

Constructor Summary

Constructors
Constructor and Description
`StateSerdes(String topic, org.apache.kafka.common.serialization.Serde<K> keySerde, org.apache.kafka.common.serialization.Serde<V> valueSerde)` Create a context for serialization using the specified serializers and deserializers which must match the key and value types used as parameters for this object; the state changelog topic is provided to bind this serde factory to, so that future calls for serialize / deserialize do not need to provide the topic name any more.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`org.apache.kafka.common.serialization.Deserializer<K>`	`keyDeserializer()` Return the key deserializer.
`K`	`keyFrom(byte[] rawKey)` Deserialize the key from raw bytes.
`org.apache.kafka.common.serialization.Serde<K>`	`keySerde()` Return the key serde.
`org.apache.kafka.common.serialization.Serializer<K>`	`keySerializer()` Return the key serializer.
`byte[]`	`rawKey(K key)` Serialize the given key.
`byte[]`	`rawValue(V value)` Serialize the given value.
`String`	`topic()` Return the topic.
`org.apache.kafka.common.serialization.Deserializer<V>`	`valueDeserializer()` Return the value deserializer.
`V`	`valueFrom(byte[] rawValue)` Deserialize the value from raw bytes.
`org.apache.kafka.common.serialization.Serde<V>`	`valueSerde()` Return the value serde.
`org.apache.kafka.common.serialization.Serializer<V>`	`valueSerializer()` Return the value serializer.
`static <K,V> StateSerdes<K,V>`	`withBuiltinTypes(String topic, Class<K> keyClass, Class<V> valueClass)` Create a new instance of `StateSerdes` for the given state name and key-/value-type classes.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TIMESTAMP_SIZE
```
public static final int TIMESTAMP_SIZE
```
    See Also:
    Constant Field Values
  - BOOLEAN_SIZE
```
public static final int BOOLEAN_SIZE
```
    See Also:
    Constant Field Values
- Constructor Detail
  - StateSerdes
```
public StateSerdes(String topic,
                   org.apache.kafka.common.serialization.Serde<K> keySerde,
                   org.apache.kafka.common.serialization.Serde<V> valueSerde)
```
    Create a context for serialization using the specified serializers and deserializers which must match the key and value types used as parameters for this object; the state changelog topic is provided to bind this serde factory to, so that future calls for serialize / deserialize do not need to provide the topic name any more.
    Parameters:
    topic - the topic name
    keySerde - the serde for keys; cannot be null
    valueSerde - the serde for values; cannot be null
    Throws:
    IllegalArgumentException - if key or value serde is null
- Method Detail
  - withBuiltinTypes
```
public static <K,V> StateSerdes<K,V> withBuiltinTypes(String topic,
                                                      Class<K> keyClass,
                                                      Class<V> valueClass)
```
    Create a new instance of StateSerdes for the given state name and key-/value-type classes.
    Type Parameters:
    K - the key type
    V - the value type
    Parameters:
    topic - the topic name
    keyClass - the class of the key type
    valueClass - the class of the value type
    Returns:
    a new instance of StateSerdes
  - keySerde
```
public org.apache.kafka.common.serialization.Serde<K> keySerde()
```
    Return the key serde.
    Returns:
    the key serde
  - valueSerde
```
public org.apache.kafka.common.serialization.Serde<V> valueSerde()
```
    Return the value serde.
    Returns:
    the value serde
  - keyDeserializer
```
public org.apache.kafka.common.serialization.Deserializer<K> keyDeserializer()
```
    Return the key deserializer.
    Returns:
    the key deserializer
  - keySerializer
```
public org.apache.kafka.common.serialization.Serializer<K> keySerializer()
```
    Return the key serializer.
    Returns:
    the key serializer
  - valueDeserializer
```
public org.apache.kafka.common.serialization.Deserializer<V> valueDeserializer()
```
    Return the value deserializer.
    Returns:
    the value deserializer
  - valueSerializer
```
public org.apache.kafka.common.serialization.Serializer<V> valueSerializer()
```
    Return the value serializer.
    Returns:
    the value serializer
  - topic
```
public String topic()
```
    Return the topic.
    Returns:
    the topic
  - keyFrom
```
public K keyFrom(byte[] rawKey)
```
    Deserialize the key from raw bytes.
    Parameters:
    rawKey - the key as raw bytes
    Returns:
    the key as typed object
  - valueFrom
```
public V valueFrom(byte[] rawValue)
```
    Deserialize the value from raw bytes.
    Parameters:
    rawValue - the value as raw bytes
    Returns:
    the value as typed object
  - rawKey
```
public byte[] rawKey(K key)
```
    Serialize the given key.
    Parameters:
    key - the key to be serialized
    Returns:
    the serialized key
  - rawValue
```
public byte[] rawValue(V value)
```
    Serialize the given value.
    Parameters:
    value - the value to be serialized
    Returns:
    the serialized value

Class StateSerdes<K,V>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TIMESTAMP_SIZE

BOOLEAN_SIZE

Constructor Detail

StateSerdes

Method Detail

withBuiltinTypes

keySerde

valueSerde

keyDeserializer

keySerializer

valueDeserializer

valueSerializer

topic

keyFrom

valueFrom

rawKey

rawValue