Record Class MessageSendParams

java.lang.Object

java.lang.Record

org.a2aproject.sdk.spec.MessageSendParams

Record Components:

message - the message to send to the agent (required)

configuration - optional configuration for message processing behavior

metadata - optional arbitrary key-value metadata for the request

tenant - optional tenant, provided as a path parameter.

public record MessageSendParams(Message message, @Nullable MessageSendConfiguration configuration, @Nullable Map<String,Object> metadata, @Nullable String tenant)
extends Record

Parameters for sending a message to an agent in the A2A Protocol.

This record encapsulates the message content, optional configuration, and metadata for agent task requests. It is used to define what message to send and how to process it.

The message can create a new task, continue an existing task (if it contains a task ID), or restart a task depending on the agent's implementation and the message context.

See Also:

• for available configuration options
• A2A Protocol Specification

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MessageSendParams.Builder	Builder for constructing MessageSendParams instances.

Constructor Summary

Constructors

Constructor	Description
MessageSendParams(Message message, @Nullable MessageSendConfiguration configuration, @Nullable Map<String,Object> metadata)	Convenience constructor with default tenant.
MessageSendParams(Message message, @Nullable MessageSendConfiguration configuration, @Nullable Map<String,Object> metadata, @Nullable String tenant)	Compact constructor for validation.

Method Summary

Modifier and Type	Method	Description
static MessageSendParams.Builder	builder()	Create a new Builder
@Nullable MessageSendConfiguration	configuration()	Returns the value of the configuration record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
Message	message()	Returns the value of the message record component.
@Nullable Map<String,Object>	metadata()	Returns the value of the metadata record component.
@Nullable String	tenant()	Returns the value of the tenant record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

MessageSendParams

public MessageSendParams(Message message,
 @Nullable MessageSendConfiguration configuration,
 @Nullable Map<String,Object> metadata,
 @Nullable String tenant)

Compact constructor for validation. Validates that required parameters are not null.

Parameters:

message - the message to send

configuration - optional message send configuration

metadata - optional metadata

tenant - the tenant identifier

MessageSendParams

public MessageSendParams(Message message,
 @Nullable MessageSendConfiguration configuration,
 @Nullable Map<String,Object> metadata)

Convenience constructor with default tenant.

Parameters:

message - the message to send (required)

configuration - optional configuration for message processing

metadata - optional metadata

Method Details

builder

public static MessageSendParams.Builder builder()

Create a new Builder

Returns:

the builder

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

message

public Message message()

Returns the value of the message record component.

Returns:

the value of the message record component

configuration

public @Nullable MessageSendConfiguration configuration()

Returns the value of the configuration record component.

Returns:

the value of the configuration record component

metadata

public @Nullable Map<String,Object> metadata()

Returns the value of the metadata record component.

Returns:

the value of the metadata record component

tenant

public @Nullable String tenant()

Returns the value of the tenant record component.

Returns:

the value of the tenant record component