com.vesoft.nebula.client.graph

Class SessionPool

java.lang.Object

com.vesoft.nebula.client.graph.SessionPool

All Implemented Interfaces:

Serializable

public class SessionPool
extends Object
implements Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
AtomicBoolean	hasInit
AtomicInteger	idleSessionSize
AtomicBoolean	isClosed
CopyOnWriteArrayList<NebulaSession>	sessionList

Constructor Summary

Constructors

Constructor and Description
SessionPool(SessionPoolConfig poolConfig)

Method Summary

Modifier and Type	Method and Description
void	close() close the session pool
ResultSet	execute(String stmt) Execute the nGql sentence.
ResultSet	execute(String stmt, Map<String,Object> parameterMap) Execute the nGql sentence with parameter
HostAddress	getAddress()
int	getIdleSessionNums() get the number of idle Session
int	getSessionNums() get the number of all Session
boolean	init() init the SessionPool
boolean	isActive() if the SessionPool has been initialized
boolean	isClosed() if the SessionPool is closed

Methods inherited from class java.lang.Object

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

Field Detail

sessionList

public CopyOnWriteArrayList<NebulaSession> sessionList

idleSessionSize

public AtomicInteger idleSessionSize

hasInit

public AtomicBoolean hasInit

isClosed

public AtomicBoolean isClosed

Constructor Detail

SessionPool

public SessionPool(SessionPoolConfig poolConfig)

Method Detail

init

public boolean init()

init the SessionPool

execute

public ResultSet execute(String stmt)
                  throws IOErrorException,
                         ClientServerIncompatibleException,
                         AuthFailedException,
                         BindSpaceFailedException

Execute the nGql sentence.

Parameters:

stmt - The nGql sentence. such as insert ngql `INSERT VERTEX person(name) VALUES "Tom":("Tom");`

Returns:

The ResultSet

Throws:

IOErrorException

ClientServerIncompatibleException

AuthFailedException

BindSpaceFailedException

execute

public ResultSet execute(String stmt,
                         Map<String,Object> parameterMap)
                  throws ClientServerIncompatibleException,
                         AuthFailedException,
                         IOErrorException,
                         BindSpaceFailedException

Execute the nGql sentence with parameter

Parameters:

stmt - The nGql sentence.

parameterMap - The nGql parameter map

Returns:

The ResultSet

Throws:

ClientServerIncompatibleException

AuthFailedException

IOErrorException

BindSpaceFailedException

close

public void close()

close the session pool

isActive

public boolean isActive()

if the SessionPool has been initialized

isClosed

public boolean isClosed()

if the SessionPool is closed

getSessionNums

public int getSessionNums()

get the number of all Session

getIdleSessionNums

public int getIdleSessionNums()

get the number of idle Session

getAddress

public HostAddress getAddress()