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POProblems with threads and hibernate sessions
 

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    <p>Im using hibernate 3 and spring. When I start a thread an exception occurred:</p> <pre><code>org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions </code></pre> <p>I dont know how to detach entities or close session with this architecture. I appreciate some help.</p> <p><code>CommunicationService.sendCommunications()</code> code:</p> <pre><code>public void sendCommunications(HibernateMessageToSendRepository messageToSendRepository) { Long messageId = new Long(41); //this is only for test. the idea is get a list of id and generate a thread group. MessageSender sender = SmsSender(messageId, messageToSendRepository); sender.start(); } </code></pre> <p>Invoking <code>sendCommunications</code> code:</p> <pre><code>ApplicationContext appCont = new ClassPathXmlApplicationContext("appContext.xml"); ServiceLocator serviceLocator = ServiceLocator.getInstance(); HibernateMessageToSendRepository messageToSendRepository = (HibernateMessageToSendRepository) appCont.getBean("messageToSendRepository"); CommunicationService communication = serviceLocator.getCommunicationService(); communication.sendCommunications(messageToSendRepository); </code></pre> <p>SmsSender (extends from MessageSender (thread)) code:</p> <pre><code>public class SmsSender extends MessageSender { public SmsSender(Long messageToSendId, HibernateMessageToSendRepository messageToSendRepository) { super(messageToSendRepository); MessageToSend messageToSendNew = this.messageToSendRepository.getById(messageToSendId); this.messageToSend = messageToSendNew; } public void run() { try { MessageToSendSms messageToSendSms = (MessageToSendSms) this.messageToSend; Iterator&lt;CustomerByMessage&gt; itCbmsgs = messageToSendSms.getCustomerByMessage().iterator(); while (itCbmsgs.hasNext()) { CustomerByMessage cbm = (CustomerByMessage) itCbmsgs.next(); //sms sending this.getGateway().sendSMS(cbm.getBody(), cbm.getCellphone()); cbm.setStatus(CustomerByMessageStatus.SENT_OK); cbm.setSendingDate(Calendar.getInstance().getTime()); } messageToSendSms.getMessage().setStatus(messageToSendStatus.ALL_MESSAGES_SENT); this.messageToSendRepository.update(messageToSendSms); } catch (Exception e) { this.log.error("Error en sms sender " + e.getMessage()); } } } </code></pre> <p><code>MessageToSendRepository</code> code:</p> <pre><code>public void update(MessageToSend messageToSend) { try { this.getSession().update(messageToSend); } catch (HibernateException e) { this.log.error(e.getMessage(), e); throw e; } } </code></pre>
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