Example usage for org.hibernate SQLQuery scroll

Introduction

In this page you can find the example usage for org.hibernate SQLQuery scroll.

Prototype

ScrollableResults scroll();

Source Link

Document

Return the query results as ScrollableResults.

Usage

From source file:net.chrisrichardson.foodToGo.domain.hibernate.HibernateOrderRepositoryImpl.java

License:Apache License

List findOrdersUsingSQLAndScroll() {
    return (List) getHibernateTemplate().execute(new HibernateCallback() {

        public Object doInHibernate(Session session) throws HibernateException, SQLException {
            SQLQuery query = makeSqlQuery(session);
            ScrollableResults results = query.scroll();
            List orders = getOrdersFromScrollableResults(results);
            Order o = (Order) orders.get(0);
            return orders;
        }//from w w  w.j a va  2s. c o m

    });
}

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From source file:resource.dao.base.HQLDAO.java

public Object doInHibernate(Session session) throws HibernateException {
    if (logger.isDebugEnabled()) {
        logger.debug("doInHibernate(Session) - start"); //$NON-NLS-1$
    }/*from  ww  w  .  j a  v a 2  s.co  m*/

    SQLQuery queryObject = session.createSQLQuery(queryCondition.getQueryString());
    Object[] values = queryCondition.getObjArray();
    Type[] types = queryCondition.getTypeArray();
    if (null != values) {
        for (int i = 0; i < values.length; i++) {
            if (logger.isDebugEnabled()) {
                logger.debug("i=" + i);
                logger.debug("values[i]=" + values[i]);
                logger.debug("types[i]=" + types[i]);
            }
            if (types != null) {
                queryObject.setParameter(i, values[i], types[i]);
            } else {
                queryObject.setParameter(i, values[i]);
            }
        }
    }

    ScrollableResults sr = null;
    try {
        PageQueryResult queryResult = new PageQueryResult();
        queryResult.setQueryResult(new ArrayList());
        queryResult.setTotalCount(0);

        sr = queryObject.scroll();
        if (false == sr.last()) {

            if (logger.isDebugEnabled()) {
                logger.debug("doInHibernate(Session) - end"); //$NON-NLS-1$
            }
            return queryResult;
        }

        int totalCount = sr.getRowNumber();
        queryResult.setTotalCount(totalCount + 1);

        int pageSize = queryCondition.getPageSize();
        int pageIndex = queryCondition.getPageIndex() - 1;

        int startRowNum = pageIndex * pageSize;
        if (false == sr.setRowNumber(startRowNum)) {
            if (logger.isDebugEnabled()) {
                logger.debug("doInHibernate(Session) - end"); //$NON-NLS-1$
            }
            return queryResult;
        }

        List list = queryResult.getQueryResult();
        for (int i = 0; i < pageSize; i++) {
            list.add(sr.get());
            if (false == sr.next()) {
                break;
            }
        }

        if (logger.isDebugEnabled()) {
            logger.debug("doInHibernate(Session) - end"); //$NON-NLS-1$
        }
        return queryResult;
    } finally {
        if (null != sr)
            sr.close();
    }
}

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From source file:ubic.gemma.persistence.service.expression.experiment.ExpressionExperimentDaoImpl.java

License:Apache License

@Override
public Collection<ExpressionExperiment> findByExpressedGene(Gene gene, Double rank) {

    //language=MySQL
    final String queryString = "SELECT DISTINCT ee.ID AS eeID FROM "
            + "GENE2CS g2s, COMPOSITE_SEQUENCE cs, PROCESSED_EXPRESSION_DATA_VECTOR dedv, INVESTIGATION ee "
            + "WHERE g2s.CS = cs.ID AND cs.ID = dedv.DESIGN_ELEMENT_FK AND dedv.EXPRESSION_EXPERIMENT_FK = ee.ID"
            + " AND g2s.gene = :geneID AND dedv.RANK_BY_MEAN >= :rank";

    Collection<Long> eeIds;

    try {//from w  w w .  j  a  va2s.  c o m
        Session session = this.getSessionFactory().getCurrentSession();
        org.hibernate.SQLQuery queryObject = session.createSQLQuery(queryString);
        queryObject.setLong("geneID", gene.getId());
        queryObject.setDouble("rank", rank);
        queryObject.addScalar("eeID", new LongType());
        ScrollableResults results = queryObject.scroll();

        eeIds = new HashSet<>();

        // Post Processing
        while (results.next())
            eeIds.add(results.getLong(0));

        session.clear();
    } catch (org.hibernate.HibernateException ex) {
        throw super.convertHibernateAccessException(ex);
    }

    return this.load(eeIds);
}

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From source file:ubic.gemma.persistence.service.expression.experiment.ExpressionExperimentDaoImpl.java

License:Apache License

@Override
public Collection<ExpressionExperiment> findByGene(Gene gene) {

    /*//from  w  ww . j  av a  2 s .  c o m
     * uses GENE2CS table.
     */
    //language=MySQL
    final String queryString = "SELECT DISTINCT ee.ID AS eeID FROM "
            + "GENE2CS g2s, COMPOSITE_SEQUENCE cs, ARRAY_DESIGN ad, BIO_ASSAY ba, INVESTIGATION ee "
            + "WHERE g2s.CS = cs.ID AND ad.ID = cs.ARRAY_DESIGN_FK AND ba.ARRAY_DESIGN_USED_FK = ad.ID AND"
            + " ba.EXPRESSION_EXPERIMENT_FK = ee.ID AND g2s.GENE = :geneID";

    Collection<Long> eeIds;

    Session session = this.getSessionFactory().getCurrentSession();
    org.hibernate.SQLQuery queryObject = session.createSQLQuery(queryString);
    queryObject.setLong("geneID", gene.getId());
    queryObject.addScalar("eeID", new LongType());
    ScrollableResults results = queryObject.scroll();

    eeIds = new HashSet<>();

    while (results.next()) {
        eeIds.add(results.getLong(0));
    }

    return this.load(eeIds);
}

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