org.apache.iotdb.tsfile.read.common

Class Path

java.lang.Object

org.apache.iotdb.tsfile.read.common.Path

All Implemented Interfaces:

Serializable, Comparable<Path>

public class Path
extends Object
implements Serializable, Comparable<Path>

This class represent a time series in TsFile, which is usually defined by a device and a measurement.

If you want to use one String such as "device1.measurement1" to init Path in TsFile API, please use the new Path(string, true) to split it to device and measurement.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	device
protected String	fullPath

Constructor Summary

Constructors

Constructor and Description
Path()
Path(String pathSc) this constructor doesn't split the path, only useful for table header.
Path(String pathSc, boolean needSplit)
Path(String device, String measurement) construct a Path directly using device and measurement, no need to reformat the path

Method Summary

Modifier and Type	Method and Description
Path	clone()
int	compareTo(Path path)
static Path	deserialize(ByteBuffer byteBuffer)
boolean	equals(Object obj)
boolean	equals(String obj)
int	getColumnNum() return the column contained by this path
String	getDevice()
String	getFullPath()
String	getFullPathWithAlias()
String	getMeasurement()
int	hashCode()
void	serialize(ByteBuffer byteBuffer)
void	serialize(DataOutputStream stream)
protected void	serializeWithoutType(ByteBuffer byteBuffer)
protected void	serializeWithoutType(DataOutputStream stream)
void	setMeasurement(String measurement)
String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

device

protected String device

fullPath

protected String fullPath

Constructor Detail

Path

public Path()

Path

public Path(String pathSc)

this constructor doesn't split the path, only useful for table header.

Parameters:

pathSc - the path that wouldn't be split.

Path

public Path(String pathSc,
            boolean needSplit)

Parameters:

pathSc - path

needSplit - whether need to be split to device and measurement, doesn't support escape character yet.

Path

public Path(String device,
            String measurement)

construct a Path directly using device and measurement, no need to reformat the path

Parameters:

device - root.deviceType.d1

measurement - s1 , does not contain TsFileConstant.PATH_SEPARATOR

Method Detail

getFullPath

public String getFullPath()

getDevice

public String getDevice()

getMeasurement

public String getMeasurement()

getFullPathWithAlias

public String getFullPathWithAlias()

setMeasurement

public void setMeasurement(String measurement)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

equals

public boolean equals(String obj)

compareTo

public int compareTo(Path path)

Specified by:

compareTo in interface Comparable<Path>

toString

public String toString()

Overrides:

toString in class Object

clone

public Path clone()

Overrides:

clone in class Object

getColumnNum

public int getColumnNum()

return the column contained by this path

serialize

public void serialize(ByteBuffer byteBuffer)

serialize

public void serialize(DataOutputStream stream)
               throws IOException

Throws:

IOException

serializeWithoutType

protected void serializeWithoutType(ByteBuffer byteBuffer)

serializeWithoutType

protected void serializeWithoutType(DataOutputStream stream)
                             throws IOException

Throws:

IOException

deserialize

public static Path deserialize(ByteBuffer byteBuffer)