/**
* @param clusterId
* @param hostName
*/
@Transactional
public void removeHost(final long clusterId, String hostName) {
populateCache();
Set<HostConfigMapping> set = hostConfigMappingByHost.get(hostName);
// Remove from cache items with clusterId
CollectionUtils.filter(
set,
new Predicate() {
@Override
public boolean evaluate(Object arg0) {
return !((HostConfigMapping) arg0).getClusterId().equals(clusterId);
}
});
// delete from db
TypedQuery<HostConfigMappingEntity> query =
entityManagerProvider
.get()
.createQuery(
"SELECT entity FROM HostConfigMappingEntity entity "
+ "WHERE entity.clusterId = ?1 AND entity.hostName = ?2",
HostConfigMappingEntity.class);
List<HostConfigMappingEntity> list =
daoUtils.selectList(query, Long.valueOf(clusterId), hostName);
for (HostConfigMappingEntity entity : list) {
entityManagerProvider.get().remove(entity);
}
}
private void populateCache() {
if (!cacheLoaded) {
gl.writeLock().lock();
try {
gl.writeLock().lock();
try {
if (hostConfigMappingByHost == null) {
hostConfigMappingByHost = new WeakHashMap<String, Set<HostConfigMapping>>();
TypedQuery<HostConfigMappingEntity> query =
entityManagerProvider
.get()
.createQuery(
"SELECT entity FROM HostConfigMappingEntity entity",
HostConfigMappingEntity.class);
List<HostConfigMappingEntity> hostConfigMappingEntities = daoUtils.selectList(query);
for (HostConfigMappingEntity hostConfigMappingEntity : hostConfigMappingEntities) {
Set<HostConfigMapping> setByHost =
hostConfigMappingByHost.get((hostConfigMappingEntity.getHostName()));
if (setByHost == null) {
setByHost = new HashSet<HostConfigMapping>();
hostConfigMappingByHost.put(hostConfigMappingEntity.getHostName(), setByHost);
}
HostConfigMapping hostConfigMapping = buildHostConfigMapping(hostConfigMappingEntity);
setByHost.add(hostConfigMapping);
}
}
} finally {
gl.writeLock().unlock();
}
} finally {
gl.writeLock().unlock();
}
cacheLoaded = true;
}
}
@RequiresSession
public List<HostConfigMappingEntity> findAll() {
return daoUtils.selectAll(entityManagerProvider.get(), HostConfigMappingEntity.class);
}