Examples of org.hibernate.stat.Statistics

org.hibernate.stat.Statistics
Statistics for a particular SessionFactory. Beware of milliseconds metrics, they are depdendent of the JVM precision: you may then encounter a 10 ms approximation dending on you OS platform. Please refer to the JVM documentation for more information. @author Emmanuel Bernard

   * @param id Employee's id in the query
   */
  public String queryCacheCheck(String id){
    
    EntityManager em = emf.createEntityManager();
    Statistics stats = em.unwrap(Session.class).getSessionFactory().getStatistics();
    stats.clear();


    try{
          // the nextTimestamp from infinispan is "return System.currentTimeMillis() / 100;"
          Thread.sleep(1000);
          
      String queryString = "from Employee e where e.id > "+id;
      QueryStatistics queryStats = stats.getQueryStatistics(queryString);
      Query query = em.createQuery(queryString);
      query.setHint("org.hibernate.cacheable", true);


      // query - this call should fill the cache
      query.getResultList();

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        return new HibernateStatisticsResource(puName, persistenceUnitRegistry, providerLabel);
    }


    private boolean hasEntity(PathElement element) {
        boolean result = false;
        final Statistics stats = getStatistics();
        if (stats != null) {
            final String entityName = element.getValue();
            result = stats.getEntityStatistics(entityName) != null;
        }
        return result;
    }

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        }
        return result;
    }


    private Set<String> getEntityNames() {
        final Statistics stats = getStatistics();
        if (stats == null) {
            return Collections.emptySet();
        } else {
            Set<String> result = new HashSet<String>();
            String[] entityNames = stats.getEntityNames();
            if (entityNames != null) {
                for (String entity : entityNames) {
                    result.add(entity);
                }
            }

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    }


    private boolean hasCacheRegion(PathElement element) {
        boolean result = false;
        final PersistenceUnitService puService = persistenceUnitRegistry.getPersistenceUnitService(puName);
        final Statistics stats = getStatistics();
        if (stats != null && puService != null) {
            final String scopedPUName = puService.getScopedPersistenceUnitName();
            final String unqualifiedRegionName = element.getValue();
            final String qualifiedRegionName = scopedPUName + "." + unqualifiedRegionName;
            result = stats.getSecondLevelCacheStatistics(qualifiedRegionName) != null;
        }
        return result;
    }

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        }
        return result;
    }


    private Set<String> getCacheRegionNames() {
        final Statistics stats = getStatistics();
        if (stats == null) {
            return Collections.emptySet();
        } else {
            Set<String> result = new HashSet<String>();
            String[] cacheRegionNames = stats.getSecondLevelCacheRegionNames();
            if (cacheRegionNames != null) {
                for (String region : cacheRegionNames) {


                    // example regionName = "jpa_SecondLevelCacheTestCase.jar#mypc.org.jboss.as.test.integration.jpa.hibernate.Employee"
                    // remove the scoped PU name plus one for '.' the separator character added to it.

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    }


    private boolean hasQuery(PathElement element) {
        boolean result = false;
        final PersistenceUnitService puService = persistenceUnitRegistry.getPersistenceUnitService(puName);
        final Statistics stats = getStatistics();
        if (stats != null && puService != null) {
            final String scopedPUName = puService.getScopedPersistenceUnitName();
            final String unqualifiedQueryName = element.getValue();
            final String queryName = scopedPUName + "." + unqualifiedQueryName;
            result = stats.getQueryStatistics(queryName) != null;
        }
        return result;
    }

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        return result;
    }




    private Set<String> getQueryNames() {
        final Statistics stats = getStatistics();
        if (stats == null) {
            return Collections.emptySet();
        } else {
            Set<String> result = new HashSet<String>();
            String[] queries = stats.getQueries();
            if (queries != null) {
                for (String query : queries) {
                    result.add(QueryName.queryName(query).getDisplayName());
                }
            }

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        }
    }


    private boolean hasCollection(PathElement element) {
        boolean result = false;
        final Statistics stats = getStatistics();
        if (stats != null) {
            final String collectionName = element.getValue();
            result = stats.getCollectionStatistics(collectionName) != null;
        }
        return result;
    }

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        }
        return result;
    }


    private Set<String> getCollectionNames() {
        final Statistics stats = getStatistics();
        if (stats == null) {
            return Collections.emptySet();
        } else {
            Set<String> result = new HashSet<String>();
            String[] collectionNames = stats.getCollectionRoleNames();
            if (collectionNames != null) {
                for (String entity : collectionNames) {
                    result.add(entity);
                }
            }

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        return new HibernateStatisticsResource(puName, persistenceUnitRegistry, providerLabel);
    }


    private boolean hasEntity(PathElement element) {
        boolean result = false;
        final Statistics stats = getStatistics();
        if (stats != null) {
            final String emtityName = element.getValue();
            result = stats.getEntityStatistics(emtityName) != null;
        }
        return result;
    }

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