org.apache.samza.system

Enum MessageType

java.lang.Object

java.lang.Enum<MessageType>

org.apache.samza.system.MessageType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<MessageType>

public enum MessageType
extends java.lang.Enum<MessageType>

The type of the intermediate stream message. The enum will be encoded using its ordinal value and put in the first byte of the serialization of intermediate message.

Enum Constant Summary

Enum Constants

Enum Constant and Description
END_OF_STREAM
USER_MESSAGE
WATERMARK

Method Summary

Modifier and Type	Method and Description
static MessageType	of(java.lang.Object message) Returns the MessageType of a particular intermediate stream message.
static MessageType	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static MessageType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

USER_MESSAGE

public static final MessageType USER_MESSAGE

WATERMARK

public static final MessageType WATERMARK

END_OF_STREAM

public static final MessageType END_OF_STREAM

Method Detail

values

public static MessageType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (MessageType c : MessageType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static MessageType valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

of

public static MessageType of(java.lang.Object message)

Returns the MessageType of a particular intermediate stream message.

Parameters:

message - an intermediate stream message

Returns:

type of the message