Example usage for org.hibernate ScrollableResults get

Introduction

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

Prototype

Object get(int i);

Source Link

Document

Get the ith object in the current row of results, without initializing any other results in the row.

Usage

From source file:com.liferay.jbpm.util.QueryUtil.java

License:Open Source License

public static List<?> list(Query query, Dialect dialect, int begin, int end) {

    if ((begin == ALL_POS) && (end == ALL_POS)) {
        return query.list();
    } else {/* w  w w.  j a  v  a  2  s  .c  om*/
        if (dialect.supportsLimit()) {
            query.setMaxResults(end - begin);
            query.setFirstResult(begin);

            return query.list();
        } else {
            List<Object> list = new ArrayList<Object>();

            ScrollableResults sr = query.scroll();

            if (sr.first() && sr.scroll(begin)) {
                for (int i = begin; i < end; i++) {
                    Object obj = sr.get(0);

                    list.add(obj);

                    if (!sr.next()) {
                        break;
                    }
                }
            }

            return list;
        }
    }
}

---

From source file:com.liferay.jbpm.util.QueryUtil.java

License:Open Source License

public static List<?> randomList(Query query, Dialect dialect, int total, int num) {

    if ((total == 0) || (num == 0)) {
        return new ArrayList<Object>();
    }//from w w w  .  j a  v a 2  s  . c  o m

    if (num >= total) {
        return list(query, dialect, ALL_POS, ALL_POS);
    }

    int[] scrollIds = Randomizer.getInstance().nextInt(total, num);

    List<Object> list = new ArrayList<Object>();

    ScrollableResults sr = query.scroll();

    for (int i = 0; i < scrollIds.length; i++) {
        if (sr.scroll(scrollIds[i])) {
            Object obj = sr.get(0);

            list.add(obj);

            sr.first();
        }
    }

    return list;
}

---

From source file:com.liferay.jbpm.util.QueryUtil.java

License:Open Source License

public static Comparable<?>[] getPrevAndNext(Query query, int count, OrderByComparator obc,
        Comparable<?> comparable) {

    int pos = count;
    int boundary = 0;

    Comparable<?>[] array = new Comparable[3];

    ScrollableResults sr = query.scroll();

    if (sr.first()) {
        while (true) {
            Object obj = sr.get(0);

            if (obj == null) {
                if (_log.isWarnEnabled()) {
                    _log.warn("Object is null");
                }//w  w  w .j  ava2  s  .  c o  m

                break;
            }

            Comparable<?> curComparable = (Comparable<?>) obj;

            int value = obc.compare(comparable, curComparable);

            if (_log.isDebugEnabled()) {
                _log.debug("Comparison result is " + value);
            }

            if (value == 0) {
                if (!comparable.equals(curComparable)) {
                    break;
                }

                array[1] = curComparable;

                if (sr.previous()) {
                    array[0] = (Comparable<?>) sr.get(0);
                }

                sr.next();

                if (sr.next()) {
                    array[2] = (Comparable<?>) sr.get(0);
                }

                break;
            }

            if (pos == 1) {
                break;
            }

            pos = (int) Math.ceil(pos / 2.0);

            int scrollPos = pos;

            if (value < 0) {
                scrollPos = scrollPos * -1;
            }

            boundary += scrollPos;

            if (boundary < 0) {
                scrollPos = scrollPos + (boundary * -1) + 1;

                boundary = 0;
            }

            if (boundary > count) {
                scrollPos = scrollPos - (boundary - count);

                boundary = scrollPos;
            }

            if (_log.isDebugEnabled()) {
                _log.debug("Scroll " + scrollPos);
            }

            if (!sr.scroll(scrollPos)) {
                if (value < 0) {
                    if (!sr.next()) {
                        break;
                    }
                } else {
                    if (!sr.previous()) {
                        break;
                    }
                }
            }
        }
    }

    return array;
}

---

From source file:com.lp.server.anfrage.fastlanereader.AnfrageartHandler.java

License:Open Source License

/**
 * sorts the data of the current query using the specified criterias and
 * returns the page of data where the row of selectedId is contained.
 * /*from www .  j  av a  2  s .com*/
 * @param sortierKriterien
 *            nach diesen Kriterien wird das Ergebnis sortiert
 * @param selectedId
 *            auf diesem Datensatz soll der Cursor stehen
 * @return QueryResult das Ergebnis der Abfrage
 * @throws EJBExceptionLP
 *             Ausnahme
 * @see UseCaseHandler#sort(SortierKriterium[], Object)
 */
public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {
    this.getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);
            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();

            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRAnfrageart anfrageart = (FLRAnfrageart) scrollableResult.get(0);
                    String c_nr = anfrageart.getC_nr();
                    if (selectedId.equals(c_nr)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.angebot.fastlanereader.AngebotartHandler.java

License:Open Source License

/**
 * sorts the data of the current query using the specified criterias and
 * returns the page of data where the row of selectedId is contained.
 * /*from   w w w  .j a  v  a2  s  . c om*/
 * @param sortierKriterien
 *            nach diesen Kriterien wird das Ergebnis sortiert
 * @param selectedId
 *            auf diesem Datensatz soll der Cursor stehen
 * @return QueryResult das Ergebnis der Abfrage
 * @throws EJBExceptionLP
 *             Ausnahme
 * @see UseCaseHandler#sort(SortierKriterium[], Object)
 */
public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {
    this.getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);
            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();

            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRAngebotart angebotart = (FLRAngebotart) scrollableResult.get(0);
                    String cNr = angebotart.getC_nr();
                    if (selectedId.equals(cNr)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.angebot.fastlanereader.AngeboterledigungsgrundHandler.java

License:Open Source License

/**
 * sorts the data of the current query using the specified criterias and
 * returns the page of data where the row of selectedId is contained.
 * /*from w w w .java 2 s .  c  o m*/
 * @param sortierKriterien
 *            nach diesen Kriterien wird das Ergebnis sortiert
 * @param selectedId
 *            auf diesem Datensatz soll der Cursor stehen
 * @return QueryResult das Ergebnis der Abfrage
 * @throws EJBExceptionLP
 *             Ausnahme
 * @see UseCaseHandler#sort(SortierKriterium[], Object)
 */
public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {

    this.getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);

            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();
            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRAngeboterledigungsgrund angeboterledigungsgrund = (FLRAngeboterledigungsgrund) scrollableResult
                            .get(0);
                    String cNr = angeboterledigungsgrund.getC_nr();
                    if (selectedId.equals(cNr)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.artikel.fastlanereader.ArtikelgruHandler.java

License:Open Source License

public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {

    getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;//from w  ww . j a  v  a 2  s  . c  o m
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);
            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();

            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRArtikelgruppe artikelgruppe = (FLRArtikelgruppe) scrollableResult.get(0);
                    Integer iId = artikelgruppe.getI_id();
                    if (selectedId.equals(iId)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.artikel.fastlanereader.ArtikelklaHandler.java

License:Open Source License

public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {
    this.getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;/*w  w  w. j  a v a2 s  .c  o m*/
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);

            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();

            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRArtikelklasse artikelklasse = (FLRArtikelklasse) scrollableResult.get(0);
                    Integer iId = artikelklasse.getI_id();
                    if (selectedId.equals(iId)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.artikel.fastlanereader.ArtikelkommentarartHandler.java

License:Open Source License

public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {

    getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;/*  w  ww . java 2 s.  co m*/
    int rowNumber = 0;

    if (selectedId != null) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            session = setFilter(session);
            String queryString = getFromClause() + buildWhereClause() + buildOrderByClause();

            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    FLRArtikelkommentarart artikelkommentarart = (FLRArtikelkommentarart) scrollableResult
                            .get(0);
                    Integer iId = artikelkommentarart.getI_id();
                    if (selectedId.equals(iId)) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

From source file:com.lp.server.artikel.fastlanereader.ArtikelshopgruppeHandler.java

License:Open Source License

public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {

    this.getQuery().setSortKrit(sortierKriterien);

    QueryResult result = null;// www . j  a v a  2 s  .  c  om
    int rowNumber = 0;

    if (selectedId != null /* && ((String) selectedId).length() > 0 */) {
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;

        try {
            session = factory.openSession();
            String queryString = "select artikelshopgruppe.i_id from FLRArtikelshopgruppe artikelshopgruppe "
                    + this.buildWhereClause() + this.buildOrderByClause();
            Query query = session.createQuery(queryString);
            ScrollableResults scrollableResult = query.scroll();
            if (scrollableResult != null) {
                scrollableResult.beforeFirst();
                while (scrollableResult.next()) {
                    if (selectedId.equals(scrollableResult.get(0))) {
                        rowNumber = scrollableResult.getRowNumber();
                        break;
                    }
                }
            }
        } catch (Exception e) {
            throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e);
        } finally {
            try {
                session.close();
            } catch (HibernateException he) {
                throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, he);
            }
        }
    }

    if (rowNumber < 0 || rowNumber >= this.getRowCount()) {
        rowNumber = 0;
    }

    result = this.getPageAt(new Integer(rowNumber));
    result.setIndexOfSelectedRow(rowNumber);

    return result;
}

---

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