public JobLogData run(JobLogData jobLogData) throws Exception {
PersistenceContext pc = null;
try {
pc = PersistenceContext.getDefaultPersistenceContext();
// remove expired messages
String hql =
"select mes from " + Message.class.getName() + " as mes where mes.expires<:today ";
OqlQuery query = new OqlQuery(hql);
query.getQuery().setTimestamp("today", new Date());
List<Message> expMes = query.list();
for (Message mes : expMes) {
mes.remove();
}
// remove expired listener
hql = "select lis from " + Listener.class.getName() + " as lis where lis.validityEnd<:today ";
query = new OqlQuery(hql);
query.getQuery().setTimestamp("today", new Date());
List<Listener> expLis = query.list();
for (Listener lis : expLis) {
lis.remove();
}
// remove orphan listener
hql = "select distinct listener.theClass from " + Listener.class.getName() + " as listener ";
query = new OqlQuery(hql);
List<String> kinds = query.list();
String listenerTableName = HibernateUtilities.getTableName(Listener.class);
// loop for each listener related object
for (String theClass : kinds) {
try {
Class claz = Class.forName(theClass);
if (ReflectionUtilities.extendsOrImplements(claz, IdentifiableSupport.class)) {
String tableName = HibernateUtilities.getTableName(claz);
String oldButAlwaysValidSQL =
"SELECT listener.id "
+ "FROM "
+ listenerTableName
+ " listener LEFT OUTER JOIN "
+ tableName
+ " ref ON listener.identifiableId = ref.id "
+ "WHERE (listener.theClass = '"
+ theClass
+ "' AND ref.id IS NULL)";
Statement s = pc.session.connection().createStatement();
ResultSet r = s.executeQuery(oldButAlwaysValidSQL);
StringBuffer ids = new StringBuffer();
boolean isFirst = true;
while (r.next()) {
if (!isFirst) ids.append(",");
isFirst = false;
ids.append("'" + r.getString("id") + "'");
}
r.close();
if (!isFirst) {
// todo: scale where ids are so many that reach sql string length
String delSQL = "DELETE FROM " + listenerTableName + " WHERE ID IN (" + ids + ");";
s.execute(delSQL);
}
s.close();
}
} catch (ClassNotFoundException e) {
}
}
pc.commitAndClose();
jobLogData.notes =
jobLogData.notes
+ "OrphanKiller executed on "
+ DateUtilities.dateAndHourToString(new Date());
} catch (Throwable e) {
Tracer.platformLogger.error("OrphanKiller error", e);
if (pc != null) {
pc.rollbackAndClose();
}
jobLogData.successfull = false;
}
return jobLogData;
}