Package org.apache.pulsar.common.schema

Class KeyValue<K,V>

java.lang.Object

org.apache.pulsar.common.schema.KeyValue<K,V>

@Public
@Stable
public class KeyValue<K,V>
extends java.lang.Object

A simple KeyValue class.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	KeyValue.KeyValueDecoder<K,V>	Decoder to decode key/value bytes.

Constructor Summary

Constructors

Constructor	Description
KeyValue(K key, V value)

Method Summary

Modifier and Type	Method	Description
static <K,V> KeyValue<K,V>	decode(byte[] data, KeyValue.KeyValueDecoder<K,V> decoder)	Decode the value into a key/value pair.
static <K,V> byte[]	encode(K key, Schema<K> keyWriter, V value, Schema<V> valueWriter)	Encode a key and value pair into a bytes array.
boolean	equals(java.lang.Object obj)
K	getKey()
V	getValue()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

KeyValue

public KeyValue(K key,
                V value)

Method Detail

getKey

public K getKey()

getValue

public V getValue()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

encode

public static <K,V> byte[] encode(K key,
                                        Schema<K> keyWriter,
                                        V value,
                                        Schema<V> valueWriter)

Encode a key and value pair into a bytes array.

Parameters:

key - key object to encode

keyWriter - a writer to encode key object

value - value object to encode

valueWriter - a writer to encode value object

Returns:

the encoded bytes array

decode

public static <K,V> KeyValue<K,V> decode(byte[] data,
                                                     KeyValue.KeyValueDecoder<K,V> decoder)

Decode the value into a key/value pair.

Parameters:

data - the encoded bytes

decoder - the decoder to decode encoded key/value bytes

Returns:

the decoded key/value pair