Package org.axonframework.messaging.queryhandling

Interface QueryHandler

All Superinterfaces:

MessageHandler

All Known Subinterfaces:

QueryHandlingComponent

All Known Implementing Classes:

AnnotatedQueryHandlingComponent, SimpleQueryHandlingComponent

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface QueryHandler
extends MessageHandler

Interface describing a handler of queries.

Since:

5.0.0

Author:

Steven van Beelen

Method Summary

Modifier and Type	Method	Description
MessageStream<QueryResponseMessage>	handle(QueryMessage query, ProcessingContext context)	Handles the given query within the given context.

Method Details

handle

@Nonnull
MessageStream<QueryResponseMessage> handle(@Nonnull
 QueryMessage query,
 @Nonnull
 ProcessingContext context)

Handles the given query within the given context.

The resulting stream may contain zero, one, or N response messages.

Parameters:

query - The query to handle.

context - The context to the given command is handled in.

Returns:

A MessagesStream of zero, one, or N response messages.