Boa noite a todos Observem o seguinte trecho de código: topicSession = topicConnection.createTopicSession(false,Session.AUTO_ACKNOWLEDGE); Sou novato na area de JMS e gostaria de saber oque significa o parametro fals…

Linha de código JMS

1 Resposta

Luca 29 de nov. de 2006

Olá

jms1.1/doc/api/index.html:

public TopicSession createTopicSession(boolean transacted,
int acknowledgeMode)
throws JMSException

Parameters:
transacted - indicates whether the session is transacted
acknowledgeMode - indicates whether the consumer or the client will acknowledge any messages it receives; ignored if the session is transacted.

Legal values are Session.AUTO_ACKNOWLEDGE, Session.CLIENT_ACKNOWLEDGE, and Session.DUPS_OK_ACKNOWLEDGE

public interface Session

Field Summary
static int AUTO_ACKNOWLEDGE
With this acknowledgment mode, the session automatically acknowledges a client’s receipt of a message either when the session has successfully returned from a call to receive or when the message listener the session has called to process the message successfully returns.

static int CLIENT_ACKNOWLEDGE
With this acknowledgment mode, the client acknowledges a consumed message by calling the message’s acknowledge method.

static int DUPS_OK_ACKNOWLEDGE
This acknowledgment mode instructs the session to lazily acknowledge the delivery of messages.

static int SESSION_TRANSACTED
This value is returned from the method getAcknowledgeMode if the session is transacted.

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[]s
Luca

1 Resposta

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