org.apache.flink.table.client.gateway

Class SingleSessionManager

java.lang.Object

org.apache.flink.table.client.gateway.SingleSessionManager

All Implemented Interfaces:

org.apache.flink.table.gateway.service.session.SessionManager

public class SingleSessionManager
extends Object
implements org.apache.flink.table.gateway.service.session.SessionManager

A SessionManager only has one session at most. It uses the less resources and also provides special handler for the REMOVE JAR syntax.

The special SessionManager is used in the Sql Client embedded mode and doesn't support concurrently modification.

Constructor Summary

Constructors

Constructor and Description
SingleSessionManager(org.apache.flink.table.gateway.service.context.DefaultContext defaultContext)

Method Summary

Modifier and Type	Method and Description
void	closeSession(org.apache.flink.table.gateway.api.session.SessionHandle sessionHandle)
org.apache.flink.table.gateway.service.session.Session	getSession(org.apache.flink.table.gateway.api.session.SessionHandle sessionHandle)
org.apache.flink.table.gateway.service.session.Session	openSession(org.apache.flink.table.gateway.api.session.SessionEnvironment environment)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.gateway.service.session.SessionManager

create

Constructor Detail

SingleSessionManager

public SingleSessionManager(org.apache.flink.table.gateway.service.context.DefaultContext defaultContext)

Method Detail

start

public void start()

Specified by:

start in interface org.apache.flink.table.gateway.service.session.SessionManager

stop

public void stop()

Specified by:

stop in interface org.apache.flink.table.gateway.service.session.SessionManager

getSession

public org.apache.flink.table.gateway.service.session.Session getSession(org.apache.flink.table.gateway.api.session.SessionHandle sessionHandle)
                                                                  throws org.apache.flink.table.gateway.api.utils.SqlGatewayException

Specified by:

getSession in interface org.apache.flink.table.gateway.service.session.SessionManager

Throws:

org.apache.flink.table.gateway.api.utils.SqlGatewayException

openSession

public org.apache.flink.table.gateway.service.session.Session openSession(org.apache.flink.table.gateway.api.session.SessionEnvironment environment)
                                                                   throws org.apache.flink.table.gateway.api.utils.SqlGatewayException

Specified by:

openSession in interface org.apache.flink.table.gateway.service.session.SessionManager

Throws:

org.apache.flink.table.gateway.api.utils.SqlGatewayException

closeSession

public void closeSession(org.apache.flink.table.gateway.api.session.SessionHandle sessionHandle)
                  throws org.apache.flink.table.gateway.api.utils.SqlGatewayException

Specified by:

closeSession in interface org.apache.flink.table.gateway.service.session.SessionManager

Throws:

org.apache.flink.table.gateway.api.utils.SqlGatewayException