Example usage for org.hibernate ScrollMode FORWARD

Introduction

In this page you can find the example usage for org.hibernate ScrollMode FORWARD_ONLY.

Prototype

ScrollMode FORWARD_ONLY

To view the source code for org.hibernate ScrollMode FORWARD_ONLY.

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Document

Requests a scrollable result that is only scrollable forwards.

Usage

From source file:org.rhq.server.metrics.migrator.datasources.ScrollableDataSource.java

License:Open Source License

@Override
public void initialize() {
    if (session != null || results != null) {
        close();// w ww . ja v  a  2 s . c o m
    }

    session = ((Session) entityManager.getDelegate()).getSessionFactory().openStatelessSession();

    this.prepareSQLSession();

    if (log.isDebugEnabled()) {
        if (maxResults >= 0) {
            log.debug("Preparing the query with " + maxResults + " results.");
        } else {
            log.debug("Preparing the query with all the results.");
        }
    }

    Query query = session.createSQLQuery(selectNativeQuery);
    if (maxResults >= 0) {
        query.setMaxResults(maxResults);
    }
    query.setFetchSize(30000);
    query.setReadOnly(true);
    query.setTimeout(TIMEOUT);
    results = query.scroll(ScrollMode.FORWARD_ONLY);

    lastMigratedItemIndex = -1;

    if (log.isDebugEnabled()) {
        if (maxResults >= 0) {
            log.debug("Query prepared with " + maxResults + " results.");
        } else {
            log.debug("Query prepared with all the results.");
        }
    }
}

From source file:org.shredzone.cilla.core.repository.impl.SearchDaoHibImpl.java

License:Open Source License

@Override
public int count(Query query, Criteria crit) {
    assertCriteriaEntity(crit);//from   w  w  w .jav  a 2 s  .  c  om

    int count = 0;

    FullTextSession fullTextSession = getFullTextSession();
    FullTextQuery fq = fullTextSession.createFullTextQuery(query, Page.class);
    fq.setCriteriaQuery(crit != null ? crit : pageDao.criteria());

    ScrollableResults sr = fq.scroll(ScrollMode.FORWARD_ONLY);
    if (sr.last()) {
        count = sr.getRowNumber();
    }
    sr.close();

    return count;
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public Iterable<D> scroll() {

    return new ScrollIterator<D>(
            getSession().getNativeSession().createCriteria(getManagedClass()).scroll(ScrollMode.FORWARD_ONLY),
            getManagedClass());//  w  w  w .ja va2s  .  co  m
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public Iterable<D> scroll(int fetchSize) {

    return new ScrollIterator<D>(getSession().getNativeSession().createCriteria(getManagedClass())
            .setFetchSize(fetchSize).scroll(ScrollMode.FORWARD_ONLY), getManagedClass());
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public Iterable<D> scrollBySQLQuery(SQLQueryDetails sqlQueryDetails) {

    return new ScrollIterator<D>(
            constructSQLQuery(sqlQueryDetails).addEntity(getManagedClass()).scroll(ScrollMode.FORWARD_ONLY),
            getManagedClass());/*from  ww w  .  ja v  a 2s .  c  om*/
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public <T> Iterable<T> scrollByQuery(Class<T> returnType, QueryDetails queryDetails) {

    return new ScrollIterator<T>(constructQuery(queryDetails).scroll(ScrollMode.FORWARD_ONLY), returnType);
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public Iterable<D> scrollByQuery(QueryDetails queryDetails) {

    return new ScrollIterator<D>(constructQuery(queryDetails).scroll(ScrollMode.FORWARD_ONLY),
            getManagedClass());/*from   w w  w.  jav  a 2s .  co  m*/
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public <T> Iterable<T> scrollByCriteria(Class<T> returnType, CriteriaDetails criteriaDetails) {

    return new ScrollIterator<T>(constructCriteria(criteriaDetails).scroll(ScrollMode.FORWARD_ONLY),
            returnType);//from   ww w .  j  a v a  2  s.c  o m
}

From source file:org.smallmind.persistence.orm.hibernate.HibernateDao.java

License:Open Source License

public Iterable<D> scrollByCriteria(CriteriaDetails criteriaDetails) {

    return new ScrollIterator<D>(constructCriteria(criteriaDetails).scroll(ScrollMode.FORWARD_ONLY),
            getManagedClass());/*from   w  w  w . j  ava2s  . co  m*/
}

From source file:org.springframework.batch.item.database.Hibernate5ItemReaderHelper.java

License:Apache License

/**
 * Get a cursor over all of the results, with the forward-only flag set.
 *
 * @param fetchSize the fetch size to use retrieving the results
 * @param parameterValues the parameter values to use (or null if none).
 *
 * @return a forward-only {@link ScrollableResults}
 *///from w  w  w. jav a2  s. co m
public ScrollableResults getForwardOnlyCursor(int fetchSize, Map<String, Object> parameterValues) {
    Query query = createQuery();
    if (parameterValues != null) {
        query.setProperties(parameterValues);
    }
    return query.setFetchSize(fetchSize).scroll(ScrollMode.FORWARD_ONLY);
}

Example usage for org.hibernate ScrollMode FORWARD_ONLY

Introduction

Prototype

Document

Usage