Example usage for org.hibernate ScrollableResults next

Introduction

In this page you can find the example usage for org.hibernate ScrollableResults next.

Prototype

boolean next();

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Usage

From source file:fr.gael.dhus.service.KeyStoreService.java

License:Open Source License

/**
 * Retrieves entries of a keyStore, oldest first.
 * @param keyStoreName the name of the keyStore
 * @return an Iterator of KeyStoreEntry/*w  w  w .  ja  va2  s  .c om*/
 */
public Iterator<KeyStoreEntry> getOldestEntries(String keyStoreName) {
    final ScrollableResults entries = keyStoreEntryDao.readOldestEntries(keyStoreName);
    return new Iterator<KeyStoreEntry>() {
        @Override
        public boolean hasNext() {
            return entries.next();
        }

        @Override
        public KeyStoreEntry next() {
            return (KeyStoreEntry) entries.get(0);
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException("Remove not supported.");
        }
    };
}

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From source file:fr.mael.microrss.dao.impl.UserArticleDaoImpl.java

License:Open Source License

private void manageResults(Class clazz, FullTextSession searchSession) {
    ScrollableResults results = searchSession.createCriteria(clazz).setFetchMode("article", FetchMode.JOIN)
            .setFetchSize(100).scroll(ScrollMode.FORWARD_ONLY);
    int index = 0;
    while (results.next()) {
        index++;/*w w w. j a  v  a  2s .  c om*/
        searchSession.index(results.get(0));
        if (index % 100 == 0) {
            searchSession.flushToIndexes();
            searchSession.clear();
        }
    }
    searchSession.flushToIndexes();
    searchSession.clear();

}

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From source file:gallery.service.rss.RssServiceImpl.java

License:Apache License

@Override
@Transactional(readOnly = true)//from  w  w w .  jav  a2 s .com
public void create() {
    if (generating) {
        logger.info("xml is allready generating ...");
        return;
    }
    try {
        generating = true;
        logger.info("start generate xml");
        long time = System.currentTimeMillis();

        File img_dir = new File(wallpaper_service.getStorePath(), Config.ENCLOSURE_IMG_SUBDIR);

        //get main wallpaper page
        Channel chan;
        List<Pages> temp = pages_service.getByPropertiesValueOrdered(null, MAIN_PSEUDONYMES, MAIN_VALUES, null,
                null);
        if (temp.isEmpty()) {
            chan = new Channel(gallery.web.Config.SITE_NAME, gallery.web.Config.SITE_NAME,
                    gallery.web.Config.SITE_NAME);
        } else {
            //TODO localize it !!!
            IAutoreplaceService.IReplacement repl = autoreplace_service.getAllReplacements("ru");
            String title = repl.replaceAll(temp.get(0).getTitle());
            String description = repl.replaceAll(temp.get(0).getDescription());
            chan = new Channel(title, gallery.web.Config.SITE_NAME, description);
        }

        RSS rss = new RSS();

        chan.setImage(new Channel.Image(gallery.web.Config.SITE_NAME + Config.LOGO_WEBDIR, chan.getTitle(),
                chan.getLink(), 0, 0, null));
        chan.setLastBuildDate(new java.util.Date());
        rss.addChannel(chan);

        ScrollableResults sr = wallpaper_service.getScrollableResults(
                "id, id_pages, description, title, date_upload, name", "active", Boolean.TRUE,
                new String[] { "date_upload" }, new String[] { "DESC" });
        int max_elements = 100;
        sr.beforeFirst();
        while (sr.next() && (max_elements-- > 0)) {
            try {
                Item item = new Item(sr.getString(2), gallery.web.Config.SITE_NAME + "index.htm?id_pages_nav="
                        + sr.getLong(1) + "&id_photo_nav=" + sr.getLong(0), sr.getString(3));
                item.setPubDate(sr.getDate(4));
                long fileLen = (new File(img_dir, sr.getString(5))).length();
                if (fileLen > 0) {
                    item.setEnclosure(new Item.Enclosure(
                            gallery.web.Config.SITE_NAME + Config.ENCLOSURE_IMG_WEBDIR + sr.getString(5),
                            fileLen, "image/jpeg"));
                }
                //item.addCategory(new Item.Category("test"));
                chan.addItem(item);
            } finally {
                //TODO: mb add some logging here
            }
        }
        sr.close();
        try {
            new RSSFeedGeneratorImpl().generateToFile(rss, new File(path, Config.RSS_FILE_NAME), "UTF-8");
        } catch (Exception e) {
            logger.error("error while saving rss to file", e);
        }
        time = System.currentTimeMillis() - time;
        logger.info("end generate xml. generated in: " + time);
    } finally {
        generating = false;
    }
}

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From source file:gov.nih.nci.caarray.plugins.nimblegen.NdfHandler.java

License:BSD License

private int loadProbes(ArrayDesignDetails details, Map<String, LogicalProbe> logicalProbes,
        ScrollableResults results) throws IOException {
    int count = 0;
    results.beforeFirst();/*from ww w . j ava 2 s .c  o  m*/
    String lastSeqId = null;
    while (results.next()) {
        final Object[] values = results.get();
        final Map<String, Object> vals = new HashMap<String, Object>();
        vals.put(PROBE_ID, values[0]);
        vals.put(SEQ_ID, values[1]);
        vals.put(CONTAINER2, values[2]);
        vals.put(X, values[3]);
        vals.put(Y, values[4]);

        if (lastSeqId != null && !vals.get(SEQ_ID).equals(lastSeqId)) {
            logicalProbes.clear();
            flushAndClearSession();
        }
        lastSeqId = (String) vals.get(SEQ_ID);

        final PhysicalProbe p = createPhysicalProbe(details, vals, logicalProbes);
        getArrayDao().save(p);
        ++count;
    }
    return count;
}

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From source file:gov.nih.nci.indexgen.Indexer.java

License:BSD License

/**
 * Generates lucene documents//from www .jav a  2s  .  c  o m
 */
public void run() {

    System.out.println("Started " + entity.getEntityName());

    long start = System.currentTimeMillis();

    try {
        fullTextSession.setFlushMode(FlushMode.MANUAL);
        fullTextSession.setCacheMode(CacheMode.IGNORE);
        Transaction transaction = fullTextSession.beginTransaction();

        // Scrollable results will avoid loading too many objects in memory
        ScrollableResults results = fullTextSession.createQuery("from " + entity.getEntityName())
                .scroll(ScrollMode.FORWARD_ONLY);

        int i = 0;
        while (results.next()) {
            fullTextSession.index(results.get(0));
            if (++i % batchSize == 0)
                fullTextSession.clear();
        }

        transaction.commit();
    }

    finally {
        fullTextSession.close();
    }

    long end = System.currentTimeMillis();
    System.out.println("Completed " + entity.getEntityName() + " in " + (end - start) + " ms");
}

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From source file:gr.abiss.calipso.service.impl.UserServiceImpl.java

License:Open Source License

@Override
@Transactional(readOnly = false)/* www.jav  a2 s .  co  m*/
public void expireResetPasswordTokens() {
    // get a hibernate session suitable for read-only access to large datasets
    StatelessSession session = ((Session) this.repository.getEntityManager().getDelegate()).getSessionFactory()
            .openStatelessSession();
    Date yesterday = DateUtils.addDays(new Date(), -1);

    // send email notifications for account confirmation tokens that expired
    org.hibernate.Query query = session.createQuery(
            "SELECT new gr.abiss.calipso.model.UserDTO(u.id, u.firstName, u.lastName,u.username, u.email, u.emailHash) FROM User u "
                    + "WHERE u.password IS NULL and u.resetPasswordTokenCreated IS NOT NULL and u.resetPasswordTokenCreated  < :yesterday");
    query.setParameter("yesterday", yesterday);
    query.setFetchSize(Integer.valueOf(1000));
    query.setReadOnly(true);
    query.setLockMode("a", LockMode.NONE);
    ScrollableResults results = query.scroll(ScrollMode.FORWARD_ONLY);
    while (results.next()) {
        UserDTO dto = (UserDTO) results.get(0);
        // TODO: send expiration email
        this.emailService.sendAccountConfirmationExpired(new User(dto));
    }
    results.close();
    session.close();

    // expire tokens, including password reset requests
    this.repository.expireResetPasswordTokens(yesterday);
}

---

From source file:it.jugpadova.blo.EventBo.java

License:Apache License

public void regenerateLuceneIndexes() {
    Session session = this.eventDao.getHibernateTemplate().getSessionFactory().getCurrentSession();
    FullTextSession fullTextSession = Search.createFullTextSession(session);
    fullTextSession.setFlushMode(FlushMode.MANUAL);
    fullTextSession.setCacheMode(CacheMode.IGNORE);
    ScrollableResults results = fullTextSession.createCriteria(Event.class).scroll(ScrollMode.FORWARD_ONLY);

    int index = 0;
    while (results.next()) {
        index++;/*from w  ww . j  a  va 2s. c o  m*/
        fullTextSession.index(results.get(0)); //index each element

        if (index % 50 == 0) {
            fullTextSession.clear(); //clear every batchSize since the queue is processed

        }
    }
}

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From source file:jp.go.nict.langrid.dao.hibernate.HibernateOverUseStateDao.java

License:Open Source License

private OverUseState getNextOverUseState(ScrollableResults iLog) {
    if (!iLog.next())
        return null;
    Object[] row = iLog.get();/* w ww  . ja  v a2  s.c  om*/
    LimitType t = (LimitType) iLog.get(6);
    long currentValue = 0;
    if (t.equals(LimitType.FREQUENCY)) {
        currentValue = ((Number) iLog.get(8)).longValue();
    } else {
        currentValue = ((Number) iLog.get(9)).longValue();
    }
    return new OverUseState((String) iLog.get(0), (String) iLog.get(1), (String) iLog.get(2),
            (String) iLog.get(3), (Calendar) iLog.get(4), (Period) iLog.get(5), t, (Integer) iLog.get(7),
            currentValue, (Calendar) iLog.get(10));
}

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From source file:kr.debop4j.data.ogm.dao.HibernateOgmDao.java

License:Apache License

@Override
public void indexAll(Class<?> clazz, int batchSize) {
    if (isDebugEnabled)
        log.debug("[{}]?  ?  ??? ...", clazz);

    clearIndex(clazz);//from  w w  w  .ja  va2 s .c o  m

    if (batchSize < DEFAUALT_BATCH_SIZE)
        batchSize = DEFAUALT_BATCH_SIZE;

    FullTextSession fts = getFullTextSession();

    FlushMode currentFlushMode = fts.getFlushMode();
    CacheMode currentCacheMode = fts.getCacheMode();
    fts.setFlushMode(FlushMode.MANUAL);
    fts.setCacheMode(CacheMode.IGNORE);

    try {
        Transaction tx = fts.beginTransaction();
        ScrollableResults results = fts.createCriteria(clazz).scroll(ScrollMode.FORWARD_ONLY);
        int index = 0;
        while (results.next()) {
            fts.index(results.get(0));
            if (++index % batchSize == 0) {
                fts.flushToIndexes();
                fts.clear();
                if (isTraceEnabled)
                    log.trace("?? . index=[{}]", index);
            }
        }
        fts.flushToIndexes();
        tx.commit();

        log.info("[{}]?   [{}]   ??? !!!", clazz,
                index);
    } finally {
        fts.setFlushMode(currentFlushMode);
        fts.setCacheMode(currentCacheMode);
    }
}

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