* @param querySpec Can be configured to be consuming
* @see <a href="http://www.xmlBlaster.org/xmlBlaster/doc/requirements/engine.qos.queryspec.QueueQuery.html">The engine.qos.queryspec.QueueQuery requirement</a>
*/
public MsgUnit[] getHistoryQueueEntries(String querySpec) throws XmlBlasterException {
if (this.queueQueryPlugin == null) {
this.queueQueryPlugin = new QueueQueryPlugin(this.serverScope);
}
this.serverScope.getTopicAccessor().release(this); // In case we were locked and now block forever!
return this.queueQueryPlugin.query(this.historyQueue, querySpec);
}