Examples of org.hibernate.Criteria.uniqueResult()

org.hibernate.Criteria.uniqueResult()
Convenience method to return a single instance that matches the query, or null if the query returns no results. @return the single result or null @throws HibernateException if there is more than one matching result

    String msg2 = Helper.getTranslation("prozesse");
    if (id != null) {
      String text = msg1 + " " + id + " (" + crit.uniqueResult() + " " + msg2 + ")";
      return new Batch(id, text);
    } else {
      String text = Helper.getTranslation("withoutBatch") + " (" + crit.uniqueResult() + " " + msg2 + ")";
      return new Batch(null, text);
    }
  }


  @SuppressWarnings("unchecked")

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        applyAdditionalConstraints(criteria);


        criteria.setProjection(Projections.rowCount());


        Number result = (Number) criteria.uniqueResult();


        return result.intValue();
    }


    /**

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        checkSession();


        Criteria query = verCfg.getRevisionInfoQueryCreator().getRevisionDateQuery(session, revision);


        try {
            Object timestampObject = query.uniqueResult();
            if (timestampObject == null) {
                throw new RevisionDoesNotExistException(revision);
            }


            // The timestamp object is either a date or a long

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        checkSession();


        Criteria query = verCfg.getRevisionInfoQueryCreator().getRevisionNumberForDateQuery(session, date);


        try {
            Number res = (Number) query.uniqueResult();
            if (res == null) {
                throw new RevisionDoesNotExistException(date);
            }


            return res;

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        Set<Number> revisions = new HashSet<Number>(1);
        revisions.add(revision);
        Criteria query = verCfg.getRevisionInfoQueryCreator().getRevisionsQuery(session, revisions);


        try {
            T revisionData = (T) query.uniqueResult();


            if (revisionData == null) {
                throw new RevisionDoesNotExistException(revision);
            }

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    }
    else {
      Criteria criteria = session.createCriteria( entityInfo.getClazz() );
      criteria.add( Restrictions.eq( entityInfo.getIdName(), entityInfo.getId() ) );
      try {
        maybeProxy = criteria.uniqueResult();
      }
      catch ( HibernateException e ) {
        //FIXME should not raise an exception but return something like null
        //FIXME this happens when the index is out of sync with the db)
        throw new SearchException(

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    }
    else {
      Criteria criteria = session.createCriteria( entityInfo.getClazz() );
      criteria.add( Restrictions.eq( entityInfo.getIdName(), entityInfo.getId() ) );
      try {
        maybeProxy = criteria.uniqueResult();
      }
      catch (HibernateException e) {
        //FIXME should not raise an exception but return something like null
        //FIXME this happens when the index is out of sync with the db)
        throw new SearchException(

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    try {
      session = HibernateUtils.getCurrentSession();
      Criteria crit = session.createCriteria(Invoice.class);
      crit.add(Restrictions.eq("year", year));
      crit.setProjection(Projections.max("number"));
      Long maxNumberLong = (Long) crit.uniqueResult();
      if (maxNumberLong != null)
        maxNumber = maxNumberLong.intValue();
      crit.setProjection(null);
      crit.setResultTransformer(Criteria.ROOT_ENTITY);
    } catch (HibernateException ex) {

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        checkSession();


        Criteria query = verCfg.getRevisionInfoQueryCreator().getRevisionDateQuery(session, revision);


        try {
            Object timestampObject = query.uniqueResult();
            if (timestampObject == null) {
                throw new RevisionDoesNotExistException(revision);
            }


            // The timestamp object is either a date or a long

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        checkSession();


        Criteria query = verCfg.getRevisionInfoQueryCreator().getRevisionNumberForDateQuery(session, date);


        try {
            Number res = (Number) query.uniqueResult();
            if (res == null) {
                throw new RevisionDoesNotExistException(date);
            }


            return res;

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