Package org.apache.hadoop.yarn.server.timelineservice.storage.common

Class StringKeyConverter

java.lang.Object

org.apache.hadoop.yarn.server.timelineservice.storage.common.StringKeyConverter

All Implemented Interfaces:

KeyConverter<java.lang.String>

public final class StringKeyConverter
extends java.lang.Object
implements KeyConverter<java.lang.String>

Encodes and decodes column names / row keys which are merely strings. Column prefixes are not part of the column name passed for encoding. It is added later, if required in the associated ColumnPrefix implementations.

Constructor Summary

Constructors

Constructor	Description
StringKeyConverter()

Method Summary

Modifier and Type	Method	Description
java.lang.String	decode(byte[] bytes)	Decodes a byte array and returns a key of type T.
byte[]	encode(java.lang.String key)	Encodes a key as a byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringKeyConverter

public StringKeyConverter()

Method Detail

encode

public byte[] encode(java.lang.String key)

Description copied from interface: KeyConverter

Encodes a key as a byte array.

Specified by:

encode in interface KeyConverter<java.lang.String>

Parameters:

key - key to be encoded.

Returns:

a byte array.

decode

public java.lang.String decode(byte[] bytes)

Description copied from interface: KeyConverter

Decodes a byte array and returns a key of type T.

Specified by:

decode in interface KeyConverter<java.lang.String>

Parameters:

bytes - byte representation

Returns:

an object(key) of type T which has been constructed after decoding the bytes.