@Override
public String getPreference(String key) {
SystemPreference pref = em.find(SystemPreference.class, key);
if (pref == null || pref.getValue() == null) {
return "";
}
return pref.getValue();
}
@Override
@Transactional
public void setPreference(String key, String value) {
SystemPreference pref = em.find(SystemPreference.class, key);
if (pref == null) {
pref = new SystemPreference(key, value);
em.persist(pref);
} else {
pref.setValue(value);
em.merge(pref);
}
}