Package org.apache.iotdb.db.engine.storagegroup.timeindex

Class FileTimeIndex

java.lang.Object

org.apache.iotdb.db.engine.storagegroup.timeindex.FileTimeIndex

All Implemented Interfaces:

ITimeIndex

public class FileTimeIndex
extends java.lang.Object
implements ITimeIndex

Field Summary

Fields

Modifier and Type	Field	Description
protected long	endTime	end times.
protected long	startTime	start time

Fields inherited from interface org.apache.iotdb.db.engine.storagegroup.timeindex.ITimeIndex

SPANS_MULTI_TIME_PARTITIONS_FLAG_ID

Constructor Summary

Constructors

Constructor	Description
FileTimeIndex()
FileTimeIndex(long startTime, long endTime)

Method Summary

Modifier and Type	Method	Description
long	calculateRamSize()
boolean	checkDeviceIdExist(java.lang.String deviceId)	check whether deviceId exists in TsFile
void	close()	do something when TsFileResource is closing (may be empty method)
int	compareDegradePriority(ITimeIndex timeIndex)	compare the priority of two ITimeIndex
FileTimeIndex	deserialize(java.io.InputStream inputStream)	deserialize from inputStream
FileTimeIndex	deserialize(java.nio.ByteBuffer buffer)	deserialize from byte buffer
boolean	endTimeEmpty()
java.util.Set<java.lang.String>	getDevices(java.lang.String tsFilePath, TsFileResource tsFileResource)	get devices in TimeIndex
long	getEndTime(java.lang.String deviceId)	get end time of device
long	getMaxEndTime()	get max end time of device
long	getMinStartTime()	get min start time of device
long	getStartTime(java.lang.String deviceId)	get start time of device
long	getTimePartition(java.lang.String tsFilePath)	get time partition
long	getTimePartitionWithCheck(java.lang.String tsFilePath)	get time partition with check.
boolean	isSpanMultiTimePartitions()	Check whether the tsFile spans multiple time partitions.
boolean	mayContainsDevice(java.lang.String device)	Whether this TsFile contains this device, if false, it must not contain this device, if true, it may or may not contain this device
void	putEndTime(java.lang.String deviceId, long time)	put end time
void	putStartTime(java.lang.String deviceId, long time)	put start time
void	serialize(java.io.OutputStream outputStream)	serialize to outputStream
boolean	stillLives(long ttlLowerBound)
void	updateEndTime(java.lang.String deviceId, long time)	update end time
void	updateStartTime(java.lang.String deviceId, long time)	update start time

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

startTime

protected long startTime

start time

endTime

protected long endTime

end times. The value is Long.MIN_VALUE if it's an unsealed sequence tsfile

Constructor Detail

FileTimeIndex

public FileTimeIndex()

FileTimeIndex

public FileTimeIndex(long startTime,
                     long endTime)

Method Detail

serialize

public void serialize(java.io.OutputStream outputStream)
               throws java.io.IOException

Description copied from interface: ITimeIndex

serialize to outputStream

Specified by:

serialize in interface ITimeIndex

Parameters:

outputStream - outputStream

Throws:

java.io.IOException

deserialize

public FileTimeIndex deserialize(java.io.InputStream inputStream)
                          throws java.io.IOException

Description copied from interface: ITimeIndex

deserialize from inputStream

Specified by:

deserialize in interface ITimeIndex

Parameters:

inputStream - inputStream

Returns:

TimeIndex

Throws:

java.io.IOException

deserialize

public FileTimeIndex deserialize(java.nio.ByteBuffer buffer)

Description copied from interface: ITimeIndex

deserialize from byte buffer

Specified by:

deserialize in interface ITimeIndex

Parameters:

buffer - byte buffer

Returns:

TimeIndex

close

public void close()

Description copied from interface: ITimeIndex

do something when TsFileResource is closing (may be empty method)

Specified by:

close in interface ITimeIndex

getDevices

public java.util.Set<java.lang.String> getDevices(java.lang.String tsFilePath,
                                                  TsFileResource tsFileResource)

Description copied from interface: ITimeIndex

get devices in TimeIndex

Specified by:

getDevices in interface ITimeIndex

Returns:

device names

endTimeEmpty

public boolean endTimeEmpty()

Specified by:

endTimeEmpty in interface ITimeIndex

Returns:

whether end time is empty (Long.MIN_VALUE)

stillLives

public boolean stillLives(long ttlLowerBound)

Specified by:

stillLives in interface ITimeIndex

Parameters:

ttlLowerBound - time lower bound

Returns:

whether any of the device lives over the given time bound

calculateRamSize

public long calculateRamSize()

Specified by:

calculateRamSize in interface ITimeIndex

Returns:

Calculate file index ram size

getTimePartition

public long getTimePartition(java.lang.String tsFilePath)

Description copied from interface: ITimeIndex

get time partition

Specified by:

getTimePartition in interface ITimeIndex

Parameters:

tsFilePath - tsFile absolute path

Returns:

partition

getTimePartitionWithCheck

public long getTimePartitionWithCheck(java.lang.String tsFilePath)
                               throws PartitionViolationException

Description copied from interface: ITimeIndex

get time partition with check. If data of tsFile spans partitions, an exception will be thrown

Specified by:

getTimePartitionWithCheck in interface ITimeIndex

Parameters:

tsFilePath - tsFile path

Returns:

partition

Throws:

PartitionViolationException - data of tsFile spans partitions

isSpanMultiTimePartitions

public boolean isSpanMultiTimePartitions()

Description copied from interface: ITimeIndex

Check whether the tsFile spans multiple time partitions.

Specified by:

isSpanMultiTimePartitions in interface ITimeIndex

Returns:

true if the tsFile spans multiple time partitions, otherwise false.

updateStartTime

public void updateStartTime(java.lang.String deviceId,
                            long time)

Description copied from interface: ITimeIndex

update start time

Specified by:

updateStartTime in interface ITimeIndex

Parameters:

deviceId - device name

time - start time

updateEndTime

public void updateEndTime(java.lang.String deviceId,
                          long time)

Description copied from interface: ITimeIndex

update end time

Specified by:

updateEndTime in interface ITimeIndex

Parameters:

deviceId - device name

time - end time

putStartTime

public void putStartTime(java.lang.String deviceId,
                         long time)

Description copied from interface: ITimeIndex

put start time

Specified by:

putStartTime in interface ITimeIndex

Parameters:

deviceId - device name

time - start time

putEndTime

public void putEndTime(java.lang.String deviceId,
                       long time)

Description copied from interface: ITimeIndex

put end time

Specified by:

putEndTime in interface ITimeIndex

Parameters:

deviceId - device name

time - end time

getStartTime

public long getStartTime(java.lang.String deviceId)

Description copied from interface: ITimeIndex

get start time of device

Specified by:

getStartTime in interface ITimeIndex

Parameters:

deviceId - device name

Returns:

start time

getMinStartTime

public long getMinStartTime()

Description copied from interface: ITimeIndex

get min start time of device

Specified by:

getMinStartTime in interface ITimeIndex

Returns:

min start time

getEndTime

public long getEndTime(java.lang.String deviceId)

Description copied from interface: ITimeIndex

get end time of device

Specified by:

getEndTime in interface ITimeIndex

Parameters:

deviceId - device name

Returns:

end time

getMaxEndTime

public long getMaxEndTime()

Description copied from interface: ITimeIndex

get max end time of device

Specified by:

getMaxEndTime in interface ITimeIndex

Returns:

max end time

checkDeviceIdExist

public boolean checkDeviceIdExist(java.lang.String deviceId)

Description copied from interface: ITimeIndex

check whether deviceId exists in TsFile

Specified by:

checkDeviceIdExist in interface ITimeIndex

Parameters:

deviceId - device name

Returns:

true if the deviceId may exist in TsFile, otherwise false.

compareDegradePriority

public int compareDegradePriority(ITimeIndex timeIndex)

Description copied from interface: ITimeIndex

compare the priority of two ITimeIndex

Specified by:

compareDegradePriority in interface ITimeIndex

Parameters:

timeIndex - another timeIndex

Returns:

value is less than 0 if the priority of this timeIndex is higher than the argument, value is equal to 0 if the priority of this timeIndex is equal to the argument, value is larger than 0 if the priority of this timeIndex is less than the argument

mayContainsDevice

public boolean mayContainsDevice(java.lang.String device)

Description copied from interface: ITimeIndex

Whether this TsFile contains this device, if false, it must not contain this device, if true, it may or may not contain this device

Specified by:

mayContainsDevice in interface ITimeIndex