<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div>The "official" folks should correct me here, but when you declare an existing queue, you get an object back that gives you the message count:<div><br></div><div><a href="http://www.rabbitmq.com/releases/rabbitmq-java-client/v2.0.0/rabbitmq-java-client-javadoc-2.0.0/com/rabbitmq/client/AMQP.Queue.DeclareOk.html">http://www.rabbitmq.com/releases/rabbitmq-java-client/v2.0.0/rabbitmq-java-client-javadoc-2.0.0/com/rabbitmq/client/AMQP.Queue.DeclareOk.html</a></div><div><br></div><div>I don't think there's a way to poll for the message count on a long-running process, though...</div><div><br></div><div>jb</div><div><br></div><div><a href="http://www.rabbitmq.com/releases/rabbitmq-java-client/v2.0.0/rabbitmq-java-client-javadoc-2.0.0/com/rabbitmq/client/AMQP.Queue.DeclareOk.html"></a><br><div><div>On Aug 26, 2010, at 8:16 AM, Florence Chabanois wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><table cellspacing="0" cellpadding="0" border="0" style="position: static; z-index: auto; "><tbody><tr><td valign="top" style="font: inherit;">Hello,<div><br></div><div>From a Java client we need to know when a queue is empty.</div><div>Is there a way to know it via the Java api (or to know the number</div><div>of messages in a queue).</div><div><br></div><div>We would rather have another way than calling <i>"rabbitmqctl list_queues"</i></div><div>via Runtime.exec()</div><div><br></div><div>Thanks for any help,</div><div>Florence.</div></td></tr></tbody></table><br>
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<span class="Apple-style-span" style="font-size: 14px; font-family: Times; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><br class="Apple-interchange-newline">Thanks!</span></font></div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><br></span></font></div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; ">J. Brisbin</span></font></div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><a href="http://jbrisbin.com/">http://jbrisbin.com/</a></span></font></div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><br></span></font></div><div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><br></span></font></div></div><font class="Apple-style-span" face="Palatino" size="4"><span class="Apple-style-span" style="font-size: 14px; "><br></span></font></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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