org.hibernate.Query.uniqueResult()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.hibernate.Query.uniqueResult方法的一些代码示例，展示了Query.uniqueResult的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query.uniqueResult方法的具体详情如下：
包路径：org.hibernate.Query
类名称：Query
方法名：uniqueResult

Query.uniqueResult介绍

[英]Convenience method to return a single instance that matches the query, or null if the query returns no results.
[中]

代码示例

代码示例来源：origin: citerus/dddsample-core

public Cargo find(TrackingId tid) {
 return (Cargo) getSession().
  createQuery("from Cargo where trackingId = :tid").
  setParameter("tid", tid).
  uniqueResult();
}

代码示例来源：origin: gocd/gocd

private Agent fetchAgentByUuid(final String uuid) {
    return (Agent) getHibernateTemplate().execute(session -> {
      Query query = session.createQuery("from Agent where uuid = :uuid");
      query.setString("uuid", uuid);
      return query.uniqueResult();
    });
  }
}

代码示例来源：origin: gocd/gocd

Modification findModificationWithRevision(Session session, long materialId, String revision) {
  Modification modification;
  String key = cacheKeyForModificationWithRevision(materialId, revision);
  modification = (Modification) goCache.get(key);
  if (modification == null) {
    synchronized (key) {
      modification = (Modification) goCache.get(key);
      if (modification == null) {
        Query query = session.createQuery("FROM Modification WHERE materialId = ? and revision = ? ORDER BY id DESC");
        query.setLong(0, materialId);
        query.setString(1, revision);
        modification = (Modification) query.uniqueResult();
        goCache.put(key, modification);
      }
    }
  }
  return modification;
}

代码示例来源：origin: openmrs/openmrs-core

/**
 * @see org.openmrs.hl7.db.HL7DAO#getNextHL7InQueue()
 */
@Override
public HL7InQueue getNextHL7InQueue() throws DAOException {
  Query query = sessionFactory.getCurrentSession().createQuery(
    "from HL7InQueue as hiq where hiq.messageState = ? order by HL7InQueueId").setParameter(0,
    HL7Constants.HL7_STATUS_PENDING, StandardBasicTypes.INTEGER).setMaxResults(1);
  if (query == null) {
    return null;
  }
  return (HL7InQueue) query.uniqueResult();
}

代码示例来源：origin: org.ow2.bonita/bonita-core

public ProcessVersion getLastProcessVersion(String processId, String packageId) {
 Query query = getSession().getNamedQuery("getLastProcessVersion");
 query.setCacheable(true);
 query.setString("processId", processId);
 query.setString("packageId", packageId);
 query.setMaxResults(1);
 ProcessVersion pv = (ProcessVersion) query.uniqueResult();
 return pv;
}

代码示例来源：origin: gocd/gocd

public Long getTotalModificationsFor(final MaterialInstance materialInstance) {
  String key = materialModificationCountKey(materialInstance);
  Long totalCount = (Long) goCache.get(key);
  if (totalCount == null || totalCount == 0) {
    synchronized (key) {
      totalCount = (Long) goCache.get(key);
      if (totalCount == null || totalCount == 0) {
        totalCount = (Long) getHibernateTemplate().execute((HibernateCallback) session -> {
          Query q = session.createQuery("select count(*) FROM Modification WHERE materialId = ?");
          q.setLong(0, materialInstance.getId());
          return q.uniqueResult();
        });
        goCache.put(key, totalCount);
      }
    }
  }
  return totalCount;
}

代码示例来源：origin: sakaiproject/sakai

public Integer getCountItemFacades(final Long questionPoolId) {
  final HibernateCallback<Number> hcb = session -> {
    Query q = session.createQuery("select count(ab) from ItemData ab, QuestionPoolItemData qpi where ab.itemId = qpi.itemId and qpi.questionPoolId = :id");
    q.setLong("id", questionPoolId);
    q.setCacheable(true);
    return (Number) q.uniqueResult();
  };
      
  return getHibernateTemplate().execute(hcb).intValue();
}

代码示例来源：origin: gocd/gocd

Modification findLatestModification(final MaterialInstance expandedInstance) {
  Modifications modifications = cachedModifications(expandedInstance);
  if (modifications != null && !modifications.isEmpty()) {
    return modifications.get(0);
  }
  String cacheKey = latestMaterialModificationsKey(expandedInstance);
  synchronized (cacheKey) {
    Modification modification = (Modification) getHibernateTemplate().execute((HibernateCallback) session -> {
      Query query = session.createQuery("FROM Modification WHERE materialId = ? ORDER BY id DESC");
      query.setMaxResults(1);
      query.setLong(0, expandedInstance.getId());
      return query.uniqueResult();
    });
    goCache.put(cacheKey, new Modifications(modification));
    return modification;
  }
}

代码示例来源：origin: hibernate/hibernate-demos

public Project getProject(long id) {
  final Session s = openSession();
  s.getTransaction().begin();
  final Query q = s.createQuery( "FROM Project WHERE id = :id" );
  q.setParameter( "id", id );
  q.setCacheable( true );
  final Project project = (Project) q.uniqueResult();
  s.getTransaction().commit();
  return project;
}

代码示例来源：origin: org.sakaiproject.common/sakai-common-composite-component

public Object doInHibernate(Session session) throws HibernateException, SQLException
  {
    Query q = session.getNamedQuery(FINDTYPEBYTUPLE);
    q.setString(AUTHORITY, authority);
    q.setString(DOMAIN, domain);
    q.setString(KEYWORD, keyword);
    q.setCacheable(cacheFindTypeByTuple);
    q.setCacheRegion(Type.class.getCanonicalName());
    return q.uniqueResult();
  }
};

代码示例来源：origin: kaaproject/kaa

@Override
public EventClassFamily findByEcfvId(String ecfvId) {
 LOG.debug("Searching event class family by ecfv id [{}]", ecfvId);
 Query query = getSession().createSQLQuery(
     "select ecf.*"
     + " from " + EVENT_CLASS_FAMILY_TABLE_NAME + " as ecf"
     + " join " + EVENT_CLASS_FAMILY_VERSION_TABLE_NAME + " as ecfv"
     + " on ecf.id = ecfv." + EVENT_CLASS_FAMILY_ID
     + " where ecfv.id = :id").addEntity(getEntityClass());
 query.setLong("id", Long.valueOf(ecfvId));
 EventClassFamily eventClassFamily = (EventClassFamily) query.uniqueResult();
 LOG.debug("[{}] Search result: {}.", ecfvId, eventClassFamily);
 return eventClassFamily;
}

代码示例来源：origin: jtalks-org/jcommune

/**
   * {@inheritDoc}
   */
  @Override
  public UserContact getContactById(long id) {
    return (UserContact) session()
        .createQuery("from UserContact u where u.id = ?")
        .setCacheable(true)
        .setLong(0, id)
        .uniqueResult();
  }
}

代码示例来源：origin: hibernate/hibernate-orm

@Override
  protected Object getResults(Session s, boolean isSingleResult) {
    Query query = getQuery( s ).setCacheable( getQueryCacheMode() != CacheMode.IGNORE ).setCacheMode( getQueryCacheMode() );
    return ( isSingleResult ? query.uniqueResult() : query.list() );
  }
}

代码示例来源：origin: hibernate/hibernate-orm

s.save( bar2 );
List list = s.createQuery(
    "from Bar bar left join bar.baz baz left join baz.cascadingBars b where bar.name like 'Bar %'"
).list();
assertTrue( row instanceof Object[] && ( (Object[]) row ).length==3 );
Query q = s.createQuery("select bar, b from Bar bar left join bar.baz baz left join baz.cascadingBars b where bar.name like 'Bar%'");
list = q.list();
if ( !(getDialect() instanceof SAPDBDialect) ) assertTrue( list.size()==2 );
q = s.createQuery("select bar, b from Bar bar left join bar.baz baz left join baz.cascadingBars b where ( bar.name in (:nameList) or bar.name in (:nameList) ) and bar.string = :stringVal");
HashSet nameList = new HashSet();
nameList.add( "bar" );
q = s.createQuery("select bar, b from Bar bar inner join bar.baz baz inner join baz.cascadingBars b where bar.name like 'Bar%'");
Object result = q.uniqueResult();
assertTrue( result != null );
q = s.createQuery("select bar, b from Bar bar left join bar.baz baz left join baz.cascadingBars b where bar.name like :name and b.name like :name");
q.setString( "name", "Bar%" );
list = q.list();
assertTrue( list.size()==1 );

代码示例来源：origin: sakaiproject/sakai

protected GradebookAssignment getAssignmentWithoutStats(final String gradebookUid, final Long assignmentId) throws HibernateException {
  return (GradebookAssignment) getSessionFactory().getCurrentSession()
      .createQuery("from GradebookAssignment as asn where asn.id = :assignmentid and asn.gradebook.uid = :gradebookuid and asn.removed is false")
      .setLong("assignmentid", assignmentId)
      .setString("gradebookuid", gradebookUid)
      .uniqueResult();
}

代码示例来源：origin: netgloo/spring-boot-samples

public User getByEmail(String email) {
 return (User) getSession().createQuery(
   "from User where email = :email")
   .setParameter("email", email)
   .uniqueResult();
}

代码示例来源：origin: OpenNMS/opennms

public OnmsNode doInHibernate(Session session) throws HibernateException, SQLException {
    Integer nodeId = (Integer)session.createQuery(query2).setMaxResults(1).uniqueResult();
    return getNode(nodeId, session);
  }
});

代码示例来源：origin: org.ow2.bonita/bonita-core

public PackageFullDefinition getPackage(String packageId, String version) {
 final Query query = getSession().getNamedQuery("getPackageFromIdAndVersion");
 query.setCacheable(true);
 query.setString("packageId", packageId);
 query.setString("version", version);
 query.setMaxResults(1);
 return (PackageFullDefinition) query.uniqueResult();
}

代码示例来源：origin: sakaiproject/sakai

/**
 */
public CourseGrade getCourseGrade(final Long gradebookId) {
  return (CourseGrade) getSessionFactory().getCurrentSession().createQuery(
      "from CourseGrade as cg where cg.gradebook.id = :gradebookid")
      .setLong("gradebookid", gradebookId)
      .uniqueResult();
}

代码示例来源：origin: sakaiproject/sakai

public long getSubPoolSize(final Long poolId) {
  final HibernateCallback<Number> hcb = session -> {
    Query q = session.createQuery("select count(qpp) from QuestionPoolData qpp where qpp.parentPoolId = :id");
    q.setCacheable(true);
    q.setLong("id", poolId);
    return (Number) q.uniqueResult();
  };
  
  return getHibernateTemplate().execute(hcb).longValue();
}

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