Java Page类代码示例

import org.activiti.engine.impl.Page; //导入依赖的package包/类
/**
 * 查询历史节点.
 */
public HistoricActivityInstanceEntity getHistoricActivityInstanceEntity(
        String historyTaskId) {
    logger.info("historyTaskId : {}", historyTaskId);

    JdbcTemplate jdbcTemplate = ApplicationContextHelper
            .getBean(JdbcTemplate.class);
    String historicActivityInstanceId = jdbcTemplate.queryForObject(
            "SELECT ID_ FROM ACT_HI_ACTINST WHERE TASK_ID_=?",
            String.class, historyTaskId);
    logger.info("historicActivityInstanceId : {}",
            historicActivityInstanceId);

    HistoricActivityInstanceQueryImpl historicActivityInstanceQueryImpl = new HistoricActivityInstanceQueryImpl();
    historicActivityInstanceQueryImpl
            .activityInstanceId(historicActivityInstanceId);

    HistoricActivityInstanceEntity historicActivityInstanceEntity = (HistoricActivityInstanceEntity) Context
            .getCommandContext()
            .getHistoricActivityInstanceEntityManager()
            .findHistoricActivityInstancesByQueryCriteria(
                    historicActivityInstanceQueryImpl, new Page(0, 1))
            .get(0);

    return historicActivityInstanceEntity;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
public HistoricActivityInstanceEntity getHistoricActivityInstanceEntity(
        String historyTaskId) {
    logger.info("historyTaskId : {}", historyTaskId);

    JdbcTemplate jdbcTemplate = ApplicationContextHelper
            .getBean(JdbcTemplate.class);
    String historicActivityInstanceId = jdbcTemplate.queryForObject(
            "select id_ from ACT_HI_ACTINST where task_id_=?",
            String.class, historyTaskId);
    logger.info("historicActivityInstanceId : {}",
            historicActivityInstanceId);

    HistoricActivityInstanceQueryImpl historicActivityInstanceQueryImpl = new HistoricActivityInstanceQueryImpl();
    historicActivityInstanceQueryImpl
            .activityInstanceId(historicActivityInstanceId);

    HistoricActivityInstanceEntity historicActivityInstanceEntity = (HistoricActivityInstanceEntity) Context
            .getCommandContext()
            .getHistoricActivityInstanceEntityManager()
            .findHistoricActivityInstancesByQueryCriteria(
                    historicActivityInstanceQueryImpl, new Page(0, 1))
            .get(0);

    return historicActivityInstanceEntity;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
/**
 * 找到想要回退对应的节点历史.
 */
public HistoricActivityInstanceEntity findTargetHistoricActivity(
        CommandContext commandContext, TaskEntity taskEntity,
        ActivityImpl activityImpl) {
    HistoricActivityInstanceQueryImpl historicActivityInstanceQueryImpl = new HistoricActivityInstanceQueryImpl();
    historicActivityInstanceQueryImpl.activityId(activityImpl.getId());
    historicActivityInstanceQueryImpl.processInstanceId(taskEntity
            .getProcessInstanceId());
    historicActivityInstanceQueryImpl
            .orderByHistoricActivityInstanceEndTime().desc();

    HistoricActivityInstanceEntity historicActivityInstanceEntity = (HistoricActivityInstanceEntity) commandContext
            .getHistoricActivityInstanceEntityManager()
            .findHistoricActivityInstancesByQueryCriteria(
                    historicActivityInstanceQueryImpl, new Page(0, 1))
            .get(0);

    return historicActivityInstanceEntity;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
public void fetchHistoricActivityInstances() {
    HistoricActivityInstanceQueryImpl historicActivityInstanceQueryImpl = new HistoricActivityInstanceQueryImpl();
    // historicActivityInstanceQueryImpl.processInstanceId(processInstanceId)
    // .orderByHistoricActivityInstanceStartTime().asc();
    // TODO: 如果用了uuid会造成这样排序出问题
    // 但是如果用startTime，可能出现因为处理速度太快，时间一样，导致次序颠倒的问题
    historicActivityInstanceQueryImpl.processInstanceId(processInstanceId)
            .orderByHistoricActivityInstanceId().asc();

    Page page = new Page(0, 100);
    historicActivityInstances = Context
            .getCommandContext()
            .getHistoricActivityInstanceEntityManager()
            .findHistoricActivityInstancesByQueryCriteria(
                    historicActivityInstanceQueryImpl, page);
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public List<ProcessDefinition> findProcessDefinitionsByQueryCriteria(ProcessDefinitionQueryImpl processDefinitionQuery, Page page) {
    // List<ProcessDefinition> processDefinitions =
    return getDbSqlSession().selectList("selectProcessDefinitionsByQueryCriteria", processDefinitionQuery, page);

    // skipped this after discussion within the team
    // // retrieve process definitions from cache (https://activiti.atlassian.net/browse/ACT-1020) to have all available information
    // ArrayList<ProcessDefinition> result = new ArrayList<ProcessDefinition>();
    // for (ProcessDefinition processDefinitionEntity : processDefinitions) {
    // ProcessDefinitionEntity fullProcessDefinition = Context
    // .getProcessEngineConfiguration()
    // .getDeploymentCache().resolveProcessDefinition((ProcessDefinitionEntity)processDefinitionEntity);
    // result.add(fullProcessDefinition);
    // }
    // return result;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
protected ProcessDefinition findNewLatestProcessDefinitionAfterRemovalOf(ProcessDefinition processDefinitionToBeRemoved) {

        // The latest process definition is not necessarily the one with 'version -1' (some versions could have been deleted)
        // Hence, the following logic

        ProcessDefinitionQueryImpl query = new ProcessDefinitionQueryImpl();
        query.processDefinitionKey(processDefinitionToBeRemoved.getKey());

        if (processDefinitionToBeRemoved.getTenantId() != null
                && !ProcessEngineConfiguration.NO_TENANT_ID.equals(processDefinitionToBeRemoved.getTenantId())) {
            query.processDefinitionTenantId(processDefinitionToBeRemoved.getTenantId());
        } else {
            query.processDefinitionWithoutTenantId();
        }

        query.processDefinitionVersionLowerThan(processDefinitionToBeRemoved.getVersion());
        query.orderByProcessDefinitionVersion().desc();

        List<ProcessDefinition> processDefinitions = getProcessDefinitionManager().findProcessDefinitionsByQueryCriteria(query, new Page(0, 1));
        if (processDefinitions != null && processDefinitions.size() > 0) {
            return processDefinitions.get(0);
        }
        return null;
    }
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
  public List<ProcessDefinition> findProcessDefinitionsByQueryCriteria(ProcessDefinitionQueryImpl processDefinitionQuery, Page page) {
//    List<ProcessDefinition> processDefinitions = 
    return getDbSqlSession().selectList("selectProcessDefinitionsByQueryCriteria", processDefinitionQuery, page);

    //skipped this after discussion within the team
//    // retrieve process definitions from cache (http://jira.codehaus.org/browse/ACT-1020) to have all available information
//    ArrayList<ProcessDefinition> result = new ArrayList<ProcessDefinition>();
//    for (ProcessDefinition processDefinitionEntity : processDefinitions) {      
//      ProcessDefinitionEntity fullProcessDefinition = Context
//              .getProcessEngineConfiguration()
//              .getDeploymentCache().resolveProcessDefinition((ProcessDefinitionEntity)processDefinitionEntity);
//      result.add(fullProcessDefinition);
//    }
//    return result;
  }
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("rawtypes")
public List selectList(String statement, Object parameter, Page page) {
    if (page != null) {
        return selectList(statement, parameter, page.getFirstResult(), page.getMaxResults());
    } else {
        return selectList(statement, parameter, 0, Integer.MAX_VALUE);
    }
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public List<HistoricProcessInstance> findHistoricProcessInstancesByQueryCriteria(HistoricProcessInstanceQueryImpl historicProcessInstanceQuery, Page page) {
  if (historyLevel>ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {
    return getDbSqlSession().selectList("selectHistoricProcessInstancesByQueryCriteria", historicProcessInstanceQuery, page);
  }
  return Collections.EMPTY_LIST;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
public DeploymentEntity findLatestDeploymentByName(String deploymentName) {
  List<?> list = getDbSqlSession().selectList("selectDeploymentsByName", deploymentName, new Page(0, 1));
  if (list!=null && !list.isEmpty()) {
    return (DeploymentEntity) list.get(0);
  }
  return null;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public List<HistoricTaskInstance> findHistoricTaskInstancesByQueryCriteria(HistoricTaskInstanceQueryImpl historicTaskInstanceQuery, Page page) {
  if (historyLevel>ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {
    return getDbSqlSession().selectList("selectHistoricTaskInstancesByQueryCriteria", historicTaskInstanceQuery, page);
  }
  return Collections.EMPTY_LIST;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public List selectList(String statement, Object parameter, Page page) {
  statement = dbSqlSessionFactory.mapStatement(statement);
  List loadedObjects;
  if (page!=null) {
    loadedObjects = sqlSession.selectList(statement, parameter, new RowBounds(page.getFirstResult(), page.getMaxResults()));
  } else {
    loadedObjects = sqlSession.selectList(statement, parameter);
  }
  return filterLoadedObjects(loadedObjects);
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
public AcquiredJobs execute(CommandContext commandContext) {
  String lockOwner = jobExecutor.getLockOwner();
  int lockTimeInMillis = jobExecutor.getLockTimeInMillis();
  int maxJobsPerAcquisition = jobExecutor.getMaxJobsPerAcquisition();
  
  
  AcquiredJobs acquiredJobs = new AcquiredJobs();
  List<JobEntity> jobs = commandContext
    .getJobManager()
    .findNextJobsToExecute(new Page(0, maxJobsPerAcquisition));
  
  for (JobEntity job: jobs) {
    List<String> jobIds = new ArrayList<String>();

    if (job != null) {
      job.setLockOwner(lockOwner);
      GregorianCalendar gregorianCalendar = new GregorianCalendar();
      gregorianCalendar.setTime(ClockUtil.getCurrentTime());
      gregorianCalendar.add(Calendar.MILLISECOND, lockTimeInMillis);
      job.setLockExpirationTime(gregorianCalendar.getTime());
      jobIds.add(job.getId());
      if (job.isExclusive()) {
        // TODO acquire other exclusive jobs for the same process instance.
      }
    }
    
    acquiredJobs.addJobIds(jobIds);
  }
  
  return acquiredJobs;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
private List<User> pageUserList(Page page, String[] users, int tenantId)
        throws RegistryException, org.wso2.carbon.user.core.UserStoreException {
    List<User> userList = new ArrayList<>();
    int resultLength = users.length;
    int max;
    if (page != null) {
        if (page.getFirstResult() > resultLength) {
            //no more result left, sending empty list
            return new ArrayList<>();
        }

        if (page.getMaxResults() > resultLength) {
            max = resultLength;
        } else {
            max = page.getMaxResults();
        }
        for (int i = page.getFirstResult(); i < max; i++) {
            userList.add(new UserEntity(users[i]));
        }
    } else {
        for (int i = 0; i < resultLength; i++) {
            userList.add(new UserEntity(users[i]));
        }
    }

    return userList;
}
 

import org.activiti.engine.impl.Page; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public List<HistoricProcessInstance> findHistoricProcessInstancesByQueryCriteria(HistoricProcessInstanceQueryImpl historicProcessInstanceQuery, Page page) {
  if (getHistoryManager().isHistoryEnabled()) {
    return getDbSqlSession().selectList("selectHistoricProcessInstancesByQueryCriteria", historicProcessInstanceQuery, page);
  }
  return Collections.EMPTY_LIST;
}