程序包的使用
org.apache.iotdb.db.query.control

使用org.apache.iotdb.db.query.control的程序包

程序包	说明
org.apache.iotdb.db.engine.storagegroup
org.apache.iotdb.db.query.control
org.apache.iotdb.db.service.basic

org.apache.iotdb.db.engine.storagegroup使用的org.apache.iotdb.db.query.control中的类

类和说明
QueryFileManager QueryFileManager records the paths of files that every query uses for QueryResourceManager.

org.apache.iotdb.db.query.control使用的org.apache.iotdb.db.query.control中的类

类和说明
FileReaderManager FileReaderManager is a singleton, which is used to manage all file readers(opened file streams) to ensure that each file is opened at most once.
QueryFileManager QueryFileManager records the paths of files that every query uses for QueryResourceManager.
QueryResourceManager QueryResourceManager manages resource (file streams) used by each query job, and assign Ids to the jobs.
QueryTimeManager This class is used to monitor the executing time of each query.
SessionManager
SessionTimeoutManager

org.apache.iotdb.db.service.basic使用的org.apache.iotdb.db.query.control中的类

类和说明
QueryTimeManager This class is used to monitor the executing time of each query.
SessionManager