package org.lsst.ccs.config;
   
   import java.util.Collection;
   import java.util.List;
   
   /**
    * abstract class used to help build DAO that uses HQL but are in a different package
    * @author bamade
    */
  // Date: 12/03/13
  
  public abstract class HqlDAO  implements DBInterface{
      /**
       * delegate to Hibernate Query type
       */
      //todo : enrich if necessary
      public interface AbstractQuery {
          List list() ;
      }
  
      /**
       * delegate to Hibernate Session type
       */
      //todo enrich if necessary
      public interface AbstractSession {
          AbstractQuery createQuery(String queryString) ;
          void saveOrUpdate(Object arg) ;
          void save(Object arg) ;
          void delete(Object arg) ;
          void flush() ;
      }
  
      protected AbstractSession session ;
      protected boolean exceptionFired ;
  
      public AbstractSession getSession() {
          return session;
      }
  
      public void setSession(AbstractSession session) {
          this.session = session;
      }
  
      /////////////////////// DB Interface contract
  
      @Override
      public void saveSubsystemDescription(ASubsystemDescription newDescription) {
          newDescription.setStartTimestamp(System.currentTimeMillis());
          // paremeter description comments my be modified
          session.saveOrUpdate(newDescription); ;
      }
  
      @Override
      public void saveGhostDescriptions(GhostSubsystemDescription ghosts) {
          session.save(ghosts) ;
      }
  
      @Override
      public ASubsystemDescription getActiveSubsystemDescription(String name, String tag) {
          String request = "from ASubsystemDescription where subsystemName = '"+name+"' and tag = '"+tag +"'" ;
          AbstractQuery query = session.createQuery(request) ;
          List listRes = query.list();
          if(listRes.size() == 1) {
              return (ASubsystemDescription)listRes.get(0) ;
          }
          return null ;
      }
  
      @Override
      public ASubsystemDescription getActiveSubsystemDescription(long id) {
          String request = "from ASubsystemDescription where id = " +id  ;
          AbstractQuery query = session.createQuery(request) ;
          List listRes = query.list();
          if(listRes.size() == 1) {
              return (ASubsystemDescription)listRes.get(0) ;
          }
          return null ;
      }
  
      @Override
      public GhostSubsystemDescription getGhostDescription(long id) {
          String request = "from GhostSubsystemDescription where id = '"+id+"'" ;
          AbstractQuery query = session.createQuery(request) ;
          List listRes = query.list();
          if(listRes.size() == 1) {
              return (GhostSubsystemDescription)listRes.get(0) ;
          }
          return null ;
      }
  
      @Override
      public void deleteActiveSubsystemDescription(ASubsystemDescription oldDescription) {
          session.delete(oldDescription);
          // flush ?
          session.flush() ;
      }
  
      @Override
      public void saveConfigProfile(AConfigProfile newProfile) {
         newProfile.setStartTimestamp(System.currentTimeMillis());
         //TODO: what of referenced subsystem? dave? different cascade ?
         // remarks can be modified
         session.saveOrUpdate(newProfile);
     }
 
     @Override
     public void savePastProfile(PastConfigProfile deprecatedProfile) {
         session.save(deprecatedProfile) ;
     }
 
     @Override
     public AConfigProfile getActiveConfigProfile(String name, String tag) {
         String request = "from AConfigProfile where name = '"+name+"' and tag = '"+tag +"'" ;
         AbstractQuery query = session.createQuery(request) ;
         List listRes = query.list();
         if(listRes.size() == 1) {
             return (AConfigProfile) listRes.get(0) ;
         }
         return null ;
     }
 
     @Override
     public void deleteActiveConfigProfile(AConfigProfile oldProfile) {
         session.delete(oldProfile);
         //flush ? YES otherwise does not work!
         session.flush() ;
     }
 
     @Override
     public void modifyParmConfig(AParameterConfiguration config) {
         session.saveOrUpdate(config);
     }
 
     @Override
     public Collection<AConfigProfile> getActiveProfilesForSubsystem(ASubsystemDescription description) {
         //TODO: check if simpler join is not more coherent
         String request = "from AConfigProfile where subsystemId = '"+description.getId()+"'" ;
         AbstractQuery query = session.createQuery(request) ;
         List listRes = query.list();
         return (Collection<AConfigProfile>)listRes ;
     }
 
     @Override
     public Collection<PastConfigProfile> getProfilesForSubsystem(GhostSubsystemDescription description) {
         //TODO: check if simpler  using id
         //TODO: RECHECK THIS! LOOKS FAULTY
         //String request = "from PastConfigProfile where subsystemDesc = "+description+"" ;
         String request = "from PastConfigProfile where subsystemDesc.id = "+description.getId()+"" ;
         AbstractQuery query = session.createQuery(request) ;
         List listRes = query.list();
         return (Collection<PastConfigProfile>)listRes ;
     }
 
     @Override
     public void saveRun(RunHistory runHistory) {
         session.save(runHistory) ;
     }
 
     @Override
     public void savePreparedConfiguration(PreparedConfiguration preparedConfiguration) {
         session.save(preparedConfiguration);
     }
 
     @Override
     public PreparedConfiguration getPreparedConfiguration(String subsystemName, String configName, String tag) {
         String request = "from PreparedConfiguration where subsystemName = '" +subsystemName +"'" ;
         if(configName != null && !"".equals(configName)) {
             request += " and configName = '" + configName +"'" ;
         }
         if(tag != null && !"".equals(tag)) {
             request += " and tag = '" + tag +"'" ;
         }
         AbstractQuery query = session.createQuery(request) ;
         List listRes = query.list();
         if(listRes.size() == 1) {
             return (PreparedConfiguration)listRes.get(0) ;
         }
         return null;
     }
 
     @Override
     public void saveMachineConfiguration(MachineConfiguration machineConfiguration) {
         session.save(machineConfiguration) ;
     }
 
     @Override
     public MachineConfiguration getMachineConfiguration(String macAddress) {
         String request = "from MachineConfiguration where macAddress = '" + macAddress + "'" ;
         AbstractQuery query = session.createQuery(request) ;
         List listRes = query.list();
         if(listRes.size() == 1) {
             return (MachineConfiguration)listRes.get(0) ;
         }
         return null;  //To change body of implemented methods use File | Settings | File Templates.
     }
 
     @Override
     public List<?> simpleHQLRequest(String hqlString) {
         AbstractQuery query = session.createQuery(hqlString) ;
         return query.list() ;
     }
 
 }