Package org.a2aproject.sdk.jsonrpc.common.wrappers

Class A2AResponse<T>

java.lang.Object

org.a2aproject.sdk.jsonrpc.common.wrappers.A2AResponse<T>

Type Parameters:

T - the type of the result value returned in successful responses

All Implemented Interfaces:

A2AMessage

Direct Known Subclasses:

A2AErrorResponse, CancelTaskResponse, CreateTaskPushNotificationConfigResponse, DeleteTaskPushNotificationConfigResponse, GetExtendedAgentCardResponse, GetTaskPushNotificationConfigResponse, GetTaskResponse, ListTaskPushNotificationConfigsResponse, ListTasksResponse, SendMessageResponse, SendStreamingMessageResponse

public abstract sealed class A2AResponse<T>
extends Object
implements A2AMessage
permits CancelTaskResponse, DeleteTaskPushNotificationConfigResponse, GetExtendedAgentCardResponse, GetTaskPushNotificationConfigResponse, GetTaskResponse, A2AErrorResponse, ListTaskPushNotificationConfigsResponse, ListTasksResponse, SendMessageResponse, SendStreamingMessageResponse, CreateTaskPushNotificationConfigResponse

Represents a JSONRPC response.

Field Summary

Fields

Modifier and Type	Field	Description
protected A2AError	error	The error object if the invocation failed.
protected Object	id	The request identifier this response corresponds to.
protected String	jsonrpc	The JSON-RPC protocol version.
protected T	result	The result of the method invocation.

Fields inherited from interface org.a2aproject.sdk.jsonrpc.common.wrappers.A2AMessage

JSONRPC_VERSION

Constructor Summary

Constructors

Constructor	Description
A2AResponse()	Default constructor for deserialization.
A2AResponse(String jsonrpc, Object id, T result, A2AError error, Class<T> resultType)	Constructs a JSON-RPC response.

Method Summary

Modifier and Type	Method	Description
A2AError	getError()	Gets the error object.
Object	getId()	Gets the request/response correlation identifier.
String	getJsonrpc()	Gets the JSON-RPC version for this message.
T	getResult()	Gets the result value.

Methods inherited from class java.lang.Object

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

Field Details

jsonrpc

protected String jsonrpc

The JSON-RPC protocol version.

id

protected Object id

The request identifier this response corresponds to.

result

protected T result

The result of the method invocation.

error

protected A2AError error

The error object if the invocation failed.

Constructor Details

A2AResponse

public A2AResponse()

Default constructor for deserialization.

A2AResponse

public A2AResponse(String jsonrpc,
 Object id,
 T result,
 A2AError error,
 Class<T> resultType)

Constructs a JSON-RPC response.

Parameters:

jsonrpc - the JSON-RPC version

id - the request ID

result - the result value

error - the error if any

resultType - the result type class

Method Details

getJsonrpc

public String getJsonrpc()

Description copied from interface: A2AMessage

Gets the JSON-RPC version for this message.

According to the JSON-RPC 2.0 specification, this must be exactly "2.0".

Specified by:

getJsonrpc in interface A2AMessage

Returns:

the JSON-RPC version string, always "2.0"

getId

public Object getId()

Description copied from interface: A2AMessage

Gets the request/response correlation identifier.

The ID is used to match responses with their corresponding requests. It may be a String, Integer, or null for notification-style requests that do not expect a response.

Specified by:

getId in interface A2AMessage

Returns:

the correlation ID, or null for notifications

getResult

public T getResult()

Gets the result value.

Returns:

the result

getError

public A2AError getError()

Gets the error object.

Returns:

the error if any