程序包 io.github.a2ap.core.model

Enum Class TaskState

java.lang.Object

java.lang.Enum<TaskState>

io.github.a2ap.core.model.TaskState

所有已实现的接口:

Serializable, Comparable<TaskState>, Constable

public enum TaskState
extends Enum<TaskState>

Enumeration of possible states for a task in the A2A protocol lifecycle. This enum defines all valid states that a task can be in during its execution, from initial submission through completion or termination. The states follow a logical progression and help clients understand the current status of their requests. State transitions typically follow this pattern: SUBMITTED → WORKING → (INPUT_REQUIRED ↔ WORKING) → COMPLETED/FAILED/CANCELED Special states like REJECTED, AUTH_REQUIRED, and UNKNOWN handle exceptional cases in the task lifecycle.

嵌套类概要

从类继承的嵌套类/接口 java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

枚举常量概要

枚举常量

枚举常量	说明
AUTH_REQUIRED	Task requires authentication before it can proceed.
CANCELED	Task was canceled by client request or system intervention.
COMPLETED	Task has been successfully completed.
FAILED	Task execution failed due to an error.
INPUT_REQUIRED	Task execution is paused, waiting for additional input from the client.
REJECTED	Task was rejected by the agent (e.g., invalid parameters, unsupported operation).
SUBMITTED	Task has been submitted but not yet started processing.
UNKNOWN	Task state is unknown or could not be determined.
WORKING	Task is currently being processed by the agent.

方法概要

修饰符和类型	方法	说明
static TaskState	fromValue(String value)
String	getValue()
static TaskState	valueOf(String name)	Returns the enum constant of this class with the specified name.
static TaskState[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

SUBMITTED

public static final TaskState SUBMITTED

Task has been submitted but not yet started processing.

WORKING

public static final TaskState WORKING

Task is currently being processed by the agent.

INPUT_REQUIRED

public static final TaskState INPUT_REQUIRED

Task execution is paused, waiting for additional input from the client.

COMPLETED

public static final TaskState COMPLETED

Task has been successfully completed.

FAILED

public static final TaskState FAILED

Task execution failed due to an error.

CANCELED

public static final TaskState CANCELED

Task was canceled by client request or system intervention.

REJECTED

public static final TaskState REJECTED

Task was rejected by the agent (e.g., invalid parameters, unsupported operation).

AUTH_REQUIRED

public static final TaskState AUTH_REQUIRED

Task requires authentication before it can proceed.

UNKNOWN

public static final TaskState UNKNOWN

Task state is unknown or could not be determined.

方法详细资料

values

public static TaskState[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

返回:

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

valueOf

public static TaskState valueOf(String name)

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

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - 如果参数为空值

getValue

public String getValue()

fromValue

public static TaskState fromValue(String value)