Examples of org.hibernate.Query.uniqueResult()

org.hibernate.Query.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 NonUniqueResultException if there is more than one matching result

        checkSession();


        Query 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();


        Query 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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        checkSession();


        Query query = verCfg.getRevisionInfoQueryCreator().getRevisionQuery(session, revision);


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


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

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        checkSession();


        Query 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();


        Query 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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        checkSession();


        Query query = verCfg.getRevisionInfoQueryCreator().getRevisionQuery(session, revision);


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


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

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        checkSession();


        Query 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();


        Query 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);
        Query query = verCfg.getRevisionInfoQueryCreator().getRevisionsQuery(session, revisions);


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


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

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        .openSession();
    Payer payer = null;
    try {
      final Query query = session.createQuery(SELECT_PAYER_BY_EMAIL);
      query.setString(0, email);
      payer = (Payer) query.uniqueResult();
    } catch (final HibernateException e) {
      LOGGER.error(e);
    }
    return payer;
  }

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