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 org.a2aproject.sdk.spec.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, org.a2aproject.sdk.spec.A2AError error, Class<T> resultType)
    Constructs a JSON-RPC response.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.a2aproject.sdk.spec.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 org.a2aproject.sdk.spec.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, org.a2aproject.sdk.spec.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 org.a2aproject.sdk.spec.A2AError getError()
      Gets the error object.
      Returns:
      the error if any