import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
@Override
public Task execute(CommandContext commandContext) {
    TaskEntityManager taskEntityManager = commandContext.getTaskEntityManager();
    TaskEntity task = taskEntityManager.findTaskById(taskId);
    task.setName(taskName);
    task.update();
    return task;
}
 

import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
public TaskEntityManager getTaskEntityManager() {
    return getSession(TaskEntityManager.class);
}
 

import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
protected TaskEntityManager getTaskManager() {
    return getSession(TaskEntityManager.class);
}
 

import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
protected void initSessionFactories() {
  if (sessionFactories==null) {
    sessionFactories = new HashMap<Class<?>, SessionFactory>();

    dbSqlSessionFactory = new DbSqlSessionFactory();
    dbSqlSessionFactory.setDatabaseType(databaseType);
    dbSqlSessionFactory.setIdGenerator(idGenerator);
    dbSqlSessionFactory.setSqlSessionFactory(sqlSessionFactory);
    dbSqlSessionFactory.setDbIdentityUsed(isDbIdentityUsed);
    dbSqlSessionFactory.setDbHistoryUsed(isDbHistoryUsed);
    dbSqlSessionFactory.setDatabaseTablePrefix(databaseTablePrefix);
    dbSqlSessionFactory.setDatabaseSchema(databaseSchema);
    addSessionFactory(dbSqlSessionFactory);
    
    addSessionFactory(new GenericManagerFactory(AttachmentEntityManager.class));
    addSessionFactory(new GenericManagerFactory(CommentEntityManager.class));
    addSessionFactory(new GenericManagerFactory(DeploymentEntityManager.class));
    addSessionFactory(new GenericManagerFactory(ModelEntityManager.class));
    addSessionFactory(new GenericManagerFactory(ExecutionEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricActivityInstanceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricDetailEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricProcessInstanceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricVariableInstanceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricTaskInstanceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoricIdentityLinkEntityManager.class));
    addSessionFactory(new GenericManagerFactory(IdentityInfoEntityManager.class));
    addSessionFactory(new GenericManagerFactory(IdentityLinkEntityManager.class));
    addSessionFactory(new GenericManagerFactory(JobEntityManager.class));
    addSessionFactory(new GenericManagerFactory(ProcessDefinitionEntityManager.class));
    addSessionFactory(new GenericManagerFactory(PropertyEntityManager.class));
    addSessionFactory(new GenericManagerFactory(ResourceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(ByteArrayEntityManager.class));
    addSessionFactory(new GenericManagerFactory(TableDataManager.class));
    addSessionFactory(new GenericManagerFactory(TaskEntityManager.class));
    addSessionFactory(new GenericManagerFactory(VariableInstanceEntityManager.class));
    addSessionFactory(new GenericManagerFactory(EventSubscriptionEntityManager.class));
    addSessionFactory(new GenericManagerFactory(HistoryManager.class));
    
    addSessionFactory(new UserEntityManagerFactory());
    addSessionFactory(new GroupEntityManagerFactory());
    addSessionFactory(new MembershipEntityManagerFactory());
  }
  
  if (customSessionFactories!=null) {
    for (SessionFactory sessionFactory: customSessionFactories) {
      addSessionFactory(sessionFactory);
    }
  }
}
 

import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
public TaskEntityManager getTaskEntityManager() {
  return getSession(TaskEntityManager.class);
}
 

import org.activiti.engine.impl.persistence.entity.TaskEntityManager; //导入依赖的package包/类
protected TaskEntityManager getTaskManager() {
  return getSession(TaskEntityManager.class);
}