org.axonframework.queryhandling

Class LoggingQueryInvocationErrorHandler

java.lang.Object

org.axonframework.queryhandling.LoggingQueryInvocationErrorHandler

All Implemented Interfaces:

QueryInvocationErrorHandler

public class LoggingQueryInvocationErrorHandler
extends Object
implements QueryInvocationErrorHandler

Implementation of the QueryInvocationErrorHandler that logs all errors to a given Logger.

Constructor Summary

Constructors

Constructor and Description
LoggingQueryInvocationErrorHandler() Initialize the error handler to log to a logger registered for this class.
LoggingQueryInvocationErrorHandler(org.slf4j.Logger logger) Initialize the error handler to use the given logger to log errors from query handlers.

Method Summary

Modifier and Type	Method and Description
void	onError(Throwable error, QueryMessage<?,?> queryMessage, MessageHandler messageHandler) Invoked when an error occurred while invoking a message handler in a scatter-gather query.

Methods inherited from class java.lang.Object

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

Constructor Detail

LoggingQueryInvocationErrorHandler

public LoggingQueryInvocationErrorHandler()

Initialize the error handler to log to a logger registered for this class.

LoggingQueryInvocationErrorHandler

public LoggingQueryInvocationErrorHandler(org.slf4j.Logger logger)

Initialize the error handler to use the given logger to log errors from query handlers.

Parameters:

logger - The logger to log errors with

Method Detail

onError

public void onError(Throwable error,
                    QueryMessage<?,?> queryMessage,
                    MessageHandler messageHandler)

Description copied from interface: QueryInvocationErrorHandler

Invoked when an error occurred while invoking a message handler in a scatter-gather query. Implementations may throw an exception to propagate the error to the caller. In that case, the QueryBus implementation will receive the exception, and may choose to propagate the error to the sender of the query.

Note that this handler is not used for point-to-point queries. In that case, exceptions are reported directly to the invoker. Query Bus implementation may choose to implement point-to-point queries as scatter-gather, and only reporting the first answer returned. In that case, this method is invoked, and any propagated exceptions may or may not be reported to the sender of the query.

Specified by:

onError in interface QueryInvocationErrorHandler

Parameters:

error - The error that occurred

queryMessage - The message causing the exception in the handler

messageHandler - The handler that reported the exception