org.hibernate.Query.setMaxResults()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.setMaxResults方法的一些代码示例，展示了Query.setMaxResults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.setMaxResults方法的具体详情如下：
包路径：org.hibernate.Query
类名称：Query
方法名：setMaxResults

Query.setMaxResults介绍

[英]Set the maximum number of rows to retrieve. If not set, there is no limit to the number of rows retrieved.
[中]设置要检索的最大行数。如果未设置，则检索的行数没有限制。

代码示例

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-orm

@Test
public void testPSCache() throws Exception {
  Session s = openSession();
  Transaction txn = s.beginTransaction();
  for ( int i=0; i<10; i++ ) s.save( new Foo() );
  Query q = s.createQuery("from Foo");
  q.setMaxResults(2);
  q.setFirstResult(5);
  assertTrue( q.list().size()==2 );
  q = s.createQuery("from Foo");
  assertTrue( q.list().size()==10 );
  assertTrue( q.list().size()==10 );
  q.setMaxResults(3);
  q.setFirstResult(3);
  assertTrue( q.list().size()==3 );
  q = s.createQuery("from Foo");
  assertTrue( q.list().size()==10 );
  txn.commit();
  s.close();
  s = openSession();
  txn = s.beginTransaction();
  q = s.createQuery("from Foo");
  assertTrue( q.list().size()==10 );
  q.setMaxResults(5);
  assertTrue( q.list().size()==5 );
  doDelete( s, "from Foo" );
  txn.commit();
  s.close();
}

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

s.save(simple );
s.createQuery( "from Simple s where repeat('foo', 3) = 'foofoofoo'" ).list();
s.createQuery( "from Simple s where repeat(s.name, 3) = 'foofoofoo'" ).list();
s.createQuery( "from Simple s where repeat( lower(s.name), (3 + (1-1)) / 2) = 'foofoofoo'" ).list();
Query q = s.createQuery("from Simple s");
q.setMaxResults( 10 );
assertTrue( q.list().size()==3 );
q = s.createQuery("from Simple s");
q.setMaxResults( 1 );
assertTrue( q.list().size()==1 );
q = s.createQuery("from Simple s");
assertTrue( q.list().size() == 3 );
q = s.createQuery("from Simple s where s.name = ?");
q.setString( 0, "Simple 1" );
assertTrue( q.list().size()==1 );
q = s.createQuery("from Simple s where s.name = ? and upper(s.name) = ?");
q.setString(1, "SIMPLE 1");
q.setString( 0, "Simple 1" );
q.setFirstResult(0);
assertTrue( q.iterate().hasNext() );
q = s.createQuery("select s.id from Simple s");
q.setFirstResult(1);
q.setMaxResults( 2 );
iter = q.iterate();
int i=0;

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

public ClientExecution findExecutionById(String executionId) {
 // query definition can be found at the bottom of resource
 // org/ow2/bonita/pvm/hibernate.execution.hbm.xml
 Query query = session.getNamedQuery("findExecutionById");
 query.setString("id", executionId);
 query.setMaxResults(1);
 return (ClientExecution) query.uniqueResult();
}

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

@Override
@SuppressWarnings("unchecked")
public List<InternalProcessInstance> getParentProcessInstancesWithInvolvedUser(final String userId,
  final int fromIndex, final int pageSize) {
 final Query query = getSession().getNamedQuery("getParentProcessInstancesWithInvolvedUser");
 query.setFirstResult(fromIndex);
 query.setMaxResults(pageSize);
 query.setString("userId", userId);
 return formatList(query.list());
}

代码示例来源：origin: denimgroup/threadfix

@Override
public Calendar getMostRecentQueueScanTime(Integer channelId) {
  return (Calendar) sessionFactory
      .getCurrentSession()
      .createQuery("select scanDate from JobStatus status " +
             "where applicationChannel = :channelId and hasStartedProcessing is false " +
             "order by scanDate desc")
      .setInteger("channelId", channelId).setMaxResults(1).uniqueResult();
}

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: gocd/gocd

public Modifications getModificationsFor(final MaterialInstance materialInstance, final Pagination pagination) {
  String key = materialModificationsWithPaginationKey(materialInstance);
  String subKey = materialModificationsWithPaginationSubKey(pagination);
  Modifications modifications = (Modifications) goCache.get(key, subKey);
  if (modifications == null) {
    synchronized (key) {
      modifications = (Modifications) goCache.get(key, subKey);
      if (modifications == null) {
        List<Modification> modificationsList = (List<Modification>) getHibernateTemplate().execute((HibernateCallback) session -> {
          Query q = session.createQuery("FROM Modification WHERE materialId = ? ORDER BY id DESC");
          q.setFirstResult(pagination.getOffset());
          q.setMaxResults(pagination.getPageSize());
          q.setLong(0, materialInstance.getId());
          return q.list();
        });
        if (!modificationsList.isEmpty()) {
          modifications = new Modifications(modificationsList);
          goCache.put(key, subKey, modifications);
        }
      }
    }
  }
  return modifications;
}

代码示例来源：origin: org.jbpm/pvm

public ClientExecution findExecutionById(String executionId) {
 // query definition can be found at the bottom of resource org/jbpm/pvm/hibernate.execution.hbm.xml
 Query query = session.getNamedQuery("findExecutionById");
 query.setString("id", executionId);
 query.setMaxResults(1);
 return (ClientExecution) query.uniqueResult();
}

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

s.createQuery( "from Simple s where repeat('foo', 3) = 'foofoofoo'" ).list();
  s.createQuery( "from Simple s where repeat(s.name, 3) = 'foofoofoo'" ).list();
  s.createQuery( "from Simple s where repeat( lower(s.name), 3 + (1-1) / 2) = 'foofoofoo'" ).list();
Query q = s.createQuery("from Simple s");
q.setMaxResults(10);
assertTrue( q.list().size()==3 );
q = s.createQuery("from Simple s");
q.setMaxResults(1);
assertTrue( q.list().size()==1 );
q = s.createQuery("from Simple s");
assertTrue( q.list().size()==3 );
q = s.createQuery("from Simple s where s.name = ?");
q.setString(0, "Simple 1");
assertTrue( q.list().size()==1 );
q = s.createQuery("from Simple s where s.name = ? and upper(s.name) = ?");
q.setString(1, "SIMPLE 1");
q.setString(0, "Simple 1");
q.setFirstResult(0);
assertTrue( q.iterate().hasNext() );
q = s.createQuery("select s.id from Simple s");
q.setFirstResult(1);
q.setMaxResults(2);
iter = q.iterate();
int i=0;

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

@SuppressWarnings("unchecked")
@Override
public List<Document> getDocuments(final ProcessInstanceUUID instanceUUID, final int fromResult, final int maxResults) {
 final Query query = getSession().getNamedQuery("getDocumentsOfProcessInstance");
 query.setString("processInstanceUUID", instanceUUID.getValue());
 query.setFirstResult(fromResult);
 query.setMaxResults(maxResults);
 return query.list();
}

代码示例来源：origin: denimgroup/threadfix

@Override
public WafRule retrieveByVulnerabilityAndWafAndDirective(
    Vulnerability vuln, Waf waf, WafRuleDirective directive) {
  return (WafRule) sessionFactory
      .getCurrentSession()
      .createQuery( "from WafRule wafRule where wafRule.vulnerability = :vulnId " +
          "and wafRule.waf = :wafId and wafRule.wafRuleDirective = :directiveId")
      .setInteger("vulnId", vuln.getId())
      .setInteger("wafId", waf.getId())
      .setInteger("directiveId", directive.getId())
      .setMaxResults(1).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: hibernate/hibernate-orm

@Test
public void testHql() {
  Session session = openSession();
  session.beginTransaction();
  Query qry = session.createQuery( "from Door" );
  qry.getLockOptions().setLockMode( LockMode.PESSIMISTIC_WRITE );
  qry.setFirstResult( 2 );
  qry.setMaxResults( 2 );
  @SuppressWarnings("unchecked") List<Door> results = qry.list();
  assertEquals( 2, results.size() );
  for ( Door door : results ) {
    assertEquals( LockMode.PESSIMISTIC_WRITE, session.getCurrentLockMode( door ) );
  }
  session.getTransaction().commit();
  session.close();
}

代码示例来源：origin: org.jbpm/pvm

public ClientProcessDefinition findLatestProcessDefinitionByName(String name) {
 // query definition can be found at the bottom of resource org/jbpm/pvm/hibernate.definition.hbm.xml
 Query query = session.getNamedQuery("findProcessDefinitionsByName");
 query.setString("name", name);
 query.setMaxResults(1);
 ClientProcessDefinition processDefinition = (ClientProcessDefinition) query.uniqueResult();
 return processDefinition;
}

代码示例来源：origin: OpenClinica/OpenClinica

public LogUsageStatsBean findLatestUsageStatParamValue(String param_key) {
   // logger.debug("UsageStatsServiceDAO -> findLatestUsageStatParamValue");
   String query =
"from " + getDomainClassName() + " usageStatParams where param_key = :param_key order by update_timestamp desc";
   List<LogUsageStatsBean> logUsageStatsBeanLst = new ArrayList<LogUsageStatsBean>();
   LogUsageStatsBean logUsageStatsBeanRet = new LogUsageStatsBean();
   org.hibernate.Query q = getCurrentSession().createQuery(query);
   q.setString("param_key", param_key);
   q.setMaxResults(1);
   logUsageStatsBeanLst = q.list();
   if ((null != logUsageStatsBeanLst) && (logUsageStatsBeanLst.size() != 0)) {
     logUsageStatsBeanRet = logUsageStatsBeanLst.get(0);
   }
   return logUsageStatsBeanRet;
 }

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

@SuppressWarnings("unchecked")
@Override
public List<DocumentDescriptor> getDocumentDescriptors(final ProcessDefinitionUUID processDefinitionUUID,
  final int fromIndex, final int maxResults) {
 final Query query = getSession().getNamedQuery("getDocumentDescriptorsOfProcessDefinition");
 query.setString("processDefinitionUUID", processDefinitionUUID.getValue());
 query.setFirstResult(fromIndex);
 query.setMaxResults(maxResults);
 return query.list();
}

代码示例来源：origin: riotfamily/riot

private boolean isSetupRequired(Session session) {
  if (condition == null) {
    return true;
  }
  Query query = session.createQuery(condition).setMaxResults(1);
  Object test = query.uniqueResult();
  if (test instanceof Number) {
    return ((Number) test).intValue() == 0;
  }
  if (test instanceof Boolean) {
    return ((Boolean) test).booleanValue();
  }
  return test == null;
}

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

@Test
public void testMaxResults() {
  doInHibernate(
      this::sessionFactory,
      session -> {
        Query query = session.createQuery( "from Employee" );
        // not initialized yet
        assertNull( query.getHibernateMaxResults() );
        // values <= 0 are considered uninitialized;
        assertNull( query.setHibernateMaxResults( -1 ).getHibernateMaxResults() );
        assertNull( query.setHibernateMaxResults( 0 ).getHibernateMaxResults() );
        assertEquals( Integer.valueOf( 1 ), query.setHibernateMaxResults( 1 ).getHibernateMaxResults() );
        assertEquals( Integer.valueOf( 0 ), query.setMaxResults( 0 ).getHibernateMaxResults() );
        assertEquals( Integer.valueOf( 2 ), query.setMaxResults( 2 ).getHibernateMaxResults() );
      }
  );
}

代码示例来源：origin: org.jbpm/pvm

public ClientProcessDefinition findProcessDefinitionById(String processDefinitionId) {
 // query definition can be found at the bottom of resource org/jbpm/pvm/hibernate.definition.hbm.xml
 Query query = session.getNamedQuery("findProcessDefinitionsById");
 query.setString("id", processDefinitionId);
 query.setMaxResults(1);
 ClientProcessDefinition processDefinition = (ClientProcessDefinition) query.uniqueResult();
 return processDefinition;
}

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