Module com.zeroc.icegrid

Package com.zeroc.IceGrid

Interface SessionPrx

All Superinterfaces:

ObjectPrx, SessionPrx

public interface SessionPrx
extends SessionPrx

Represents a session object used by IceGrid clients to allocate and release objects. Client sessions are created either via the RegistryPrx object or via the registry client SessionManagerPrx object.

Remarks: The Slice compiler generated this proxy interface from Slice interface ::IceGrid::Session.

Field Summary

Fields inherited from interface com.zeroc.Ice.ObjectPrx

ice_staticId, noExplicitContext

Method Summary

Modifier and Type	Method	Description
default ObjectPrx	allocateObjectById(Identity id)	Allocates an object.
default ObjectPrx	allocateObjectById(Identity id, Map<String,String> context)	Allocates an object.
default CompletableFuture<ObjectPrx>	allocateObjectByIdAsync(Identity id)	Allocates an object.
default CompletableFuture<ObjectPrx>	allocateObjectByIdAsync(Identity id, Map<String,String> context)	Allocates an object.
default ObjectPrx	allocateObjectByType(String type)	Allocates an object with the given type.
default ObjectPrx	allocateObjectByType(String type, Map<String,String> context)	Allocates an object with the given type.
default CompletableFuture<ObjectPrx>	allocateObjectByTypeAsync(String type)	Allocates an object with the given type.
default CompletableFuture<ObjectPrx>	allocateObjectByTypeAsync(String type, Map<String,String> context)	Allocates an object with the given type.
static SessionPrx	checkedCast(ObjectPrx obj)	Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.
static SessionPrx	checkedCast(ObjectPrx obj, String facet)	Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.
static SessionPrx	checkedCast(ObjectPrx obj, String facet, Map<String,String> context)	Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.
static SessionPrx	checkedCast(ObjectPrx obj, Map<String,String> context)	Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.
static SessionPrx	createProxy(Communicator communicator, String proxyString)	Creates a new proxy that implements SessionPrx.
SessionPrx	ice_adapterId(String newAdapterId)	Creates a proxy that is identical to this proxy, except for the adapter ID.
SessionPrx	ice_batchDatagram()	Creates a proxy that is identical to this proxy, but uses batch datagram invocations.
SessionPrx	ice_batchOneway()	Creates a proxy that is identical to this proxy, but uses batch oneway invocations.
SessionPrx	ice_collocationOptimized(boolean b)	Creates a proxy that is identical to this proxy, except for collocation optimization.
SessionPrx	ice_compress(boolean co)	Creates a proxy that is identical to this proxy, except for its compression setting which overrides the compression setting from the proxy endpoints.
SessionPrx	ice_connectionCached(boolean newCache)	Creates a proxy that is identical to this proxy, except for connection caching.
SessionPrx	ice_connectionId(String connectionId)	Creates a proxy that is identical to this proxy, except for its connection ID.
SessionPrx	ice_context(Map<String,String> newContext)	Creates a proxy that is identical to this proxy, except for the per-proxy context.
SessionPrx	ice_datagram()	Creates a proxy that is identical to this proxy, but uses datagram invocations.
SessionPrx	ice_encodingVersion(EncodingVersion e)	Creates a proxy that is identical to this proxy, except for the encoding used to marshal parameters.
SessionPrx	ice_endpoints(Endpoint[] newEndpoints)	Creates a proxy that is identical to this proxy, except for the endpoints.
SessionPrx	ice_endpointSelection(EndpointSelectionType newType)	Creates a proxy that is identical to this proxy, except for the endpoint selection policy.
SessionPrx	ice_fixed(Connection connection)	Creates a proxy that is identical to this proxy, except it's a fixed proxy bound to the given connection.
SessionPrx	ice_invocationTimeout(int newTimeout)	Creates a proxy that is identical to this proxy, except for the invocation timeout.
SessionPrx	ice_invocationTimeout(Duration newTimeout)	Creates a proxy that is identical to this proxy, except for the invocation timeout.
SessionPrx	ice_locator(LocatorPrx locator)	Creates a proxy that is identical to this proxy, except for the locator.
SessionPrx	ice_locatorCacheTimeout(int newTimeout)	Creates a proxy that is identical to this proxy, except for the locator cache timeout.
SessionPrx	ice_oneway()	Creates a proxy that is identical to this proxy, but uses oneway invocations.
SessionPrx	ice_router(RouterPrx router)	Creates a proxy that is identical to this proxy, except for the router.
static String	ice_staticId()	Gets the type ID of the associated Slice interface.
SessionPrx	ice_twoway()	Creates a proxy that is identical to this proxy, but uses twoway invocations.
default void	keepAlive()	Keeps the session alive.
default void	keepAlive(Map<String,String> context)	Keeps the session alive.
default CompletableFuture<Void>	keepAliveAsync()	Keeps the session alive.
default CompletableFuture<Void>	keepAliveAsync(Map<String,String> context)	Keeps the session alive.
default void	releaseObject(Identity id)	Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).
default void	releaseObject(Identity id, Map<String,String> context)	Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).
default CompletableFuture<Void>	releaseObjectAsync(Identity id)	Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).
default CompletableFuture<Void>	releaseObjectAsync(Identity id, Map<String,String> context)	Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).
default void	setAllocationTimeout(int timeout)	Sets the allocation timeout.
default void	setAllocationTimeout(int timeout, Map<String,String> context)	Sets the allocation timeout.
default CompletableFuture<Void>	setAllocationTimeoutAsync(int timeout)	Sets the allocation timeout.
default CompletableFuture<Void>	setAllocationTimeoutAsync(int timeout, Map<String,String> context)	Sets the allocation timeout.
static SessionPrx	uncheckedCast(ObjectPrx obj)	Creates a new proxy from an existing proxy.
static SessionPrx	uncheckedCast(ObjectPrx obj, String facet)	Creates a new proxy from an existing proxy.

Methods inherited from interface com.zeroc.Ice.ObjectPrx

equals, ice_executor, ice_facet, ice_flushBatchRequests, ice_flushBatchRequestsAsync, ice_getAdapterId, ice_getCachedConnection, ice_getCommunicator, ice_getCompress, ice_getConnection, ice_getConnectionAsync, ice_getConnectionId, ice_getContext, ice_getEncodingVersion, ice_getEndpoints, ice_getEndpointSelection, ice_getFacet, ice_getIdentity, ice_getInvocationTimeout, ice_getLocator, ice_getLocatorCacheTimeout, ice_getRouter, ice_id, ice_id, ice_idAsync, ice_idAsync, ice_identity, ice_ids, ice_ids, ice_idsAsync, ice_idsAsync, ice_invoke, ice_invoke, ice_invokeAsync, ice_invokeAsync, ice_isA, ice_isA, ice_isAAsync, ice_isAAsync, ice_isBatchDatagram, ice_isBatchOneway, ice_isCollocationOptimized, ice_isConnectionCached, ice_isDatagram, ice_isFixed, ice_isOneway, ice_isTwoway, ice_locatorCacheTimeout, ice_ping, ice_ping, ice_pingAsync, ice_pingAsync

Methods inherited from interface com.zeroc.Glacier2.SessionPrx

destroy, destroy, destroyAsync, destroyAsync

Method Details

keepAlive

default void keepAlive()

Keeps the session alive.

keepAlive

default void keepAlive(Map<String,String> context)

Keeps the session alive.

Parameters:

context - the Context map to send with the invocation

keepAliveAsync

default CompletableFuture<Void> keepAliveAsync()

Keeps the session alive.

Returns:

a future that will be completed when the invocation completes

keepAliveAsync

default CompletableFuture<Void> keepAliveAsync(Map<String,String> context)

Keeps the session alive.

Parameters:

context - the Context map to send with the invocation

Returns:

a future that will be completed when the invocation completes

allocateObjectById

default ObjectPrx allocateObjectById(Identity id)
                              throws ObjectNotRegisteredException,
AllocationException

Allocates an object.

Parameters:

id - The identity of the object to allocate.

Returns:

A proxy to the allocated object. This proxy is never null.

Throws:

AllocationException - Thrown when the allocation fails.

ObjectNotRegisteredException - Thrown when an object with the given identity is not registered with the registry.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectById

default ObjectPrx allocateObjectById(Identity id,
 Map<String,String> context)
                              throws ObjectNotRegisteredException,
AllocationException

Allocates an object.

Parameters:

id - The identity of the object to allocate.

context - the Context map to send with the invocation

Returns:

A proxy to the allocated object. This proxy is never null.

Throws:

AllocationException - Thrown when the allocation fails.

ObjectNotRegisteredException - Thrown when an object with the given identity is not registered with the registry.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByIdAsync

default CompletableFuture<ObjectPrx> allocateObjectByIdAsync(Identity id)

Allocates an object.

Parameters:

id - The identity of the object to allocate.

Returns:

A proxy to the allocated object. This proxy is never null.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByIdAsync

default CompletableFuture<ObjectPrx> allocateObjectByIdAsync(Identity id,
 Map<String,String> context)

Allocates an object.

Parameters:

id - The identity of the object to allocate.

context - the Context map to send with the invocation

Returns:

A proxy to the allocated object. This proxy is never null.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByType

default ObjectPrx allocateObjectByType(String type)
                                throws AllocationException

Allocates an object with the given type.

Parameters:

type - The type of the object.

Returns:

A proxy to the allocated object. This proxy is never null.

Throws:

AllocationException - Thrown when the allocation fails.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByType

default ObjectPrx allocateObjectByType(String type,
 Map<String,String> context)
                                throws AllocationException

Allocates an object with the given type.

Parameters:

type - The type of the object.

context - the Context map to send with the invocation

Returns:

A proxy to the allocated object. This proxy is never null.

Throws:

AllocationException - Thrown when the allocation fails.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByTypeAsync

default CompletableFuture<ObjectPrx> allocateObjectByTypeAsync(String type)

Allocates an object with the given type.

Parameters:

type - The type of the object.

Returns:

A proxy to the allocated object. This proxy is never null.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

allocateObjectByTypeAsync

default CompletableFuture<ObjectPrx> allocateObjectByTypeAsync(String type,
 Map<String,String> context)

Allocates an object with the given type.

Parameters:

type - The type of the object.

context - the Context map to send with the invocation

Returns:

A proxy to the allocated object. This proxy is never null.

See Also:

• setAllocationTimeout(int)
• releaseObject(com.zeroc.Ice.Identity)

releaseObject

default void releaseObject(Identity id)
                    throws ObjectNotRegisteredException,
AllocationException

Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).

Parameters:

id - The identity of the object to release.

Throws:

AllocationException - Thrown when the object can't be released. This can happen when the object is not allocatable or is not allocated by this session.

ObjectNotRegisteredException - Thrown when an object with the given identity is not registered with the registry.

releaseObject

default void releaseObject(Identity id,
 Map<String,String> context)
                    throws ObjectNotRegisteredException,
AllocationException

Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).

Parameters:

id - The identity of the object to release.

context - the Context map to send with the invocation

Throws:

AllocationException - Thrown when the object can't be released. This can happen when the object is not allocatable or is not allocated by this session.

ObjectNotRegisteredException - Thrown when an object with the given identity is not registered with the registry.

releaseObjectAsync

default CompletableFuture<Void> releaseObjectAsync(Identity id)

Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).

Parameters:

id - The identity of the object to release.

Returns:

a future that will be completed when the invocation completes

releaseObjectAsync

default CompletableFuture<Void> releaseObjectAsync(Identity id,
 Map<String,String> context)

Releases an object that was allocated using allocateObjectById(com.zeroc.Ice.Identity) or allocateObjectByType(java.lang.String).

Parameters:

id - The identity of the object to release.

context - the Context map to send with the invocation

Returns:

a future that will be completed when the invocation completes

setAllocationTimeout

default void setAllocationTimeout(int timeout)

Sets the allocation timeout. When no object is immediately available for an allocation request, the implementation of allocateObjectById(com.zeroc.Ice.Identity) and allocateObjectByType(java.lang.String) waits for the duration of this timeout.

Parameters:

timeout - The timeout in milliseconds.

setAllocationTimeout

default void setAllocationTimeout(int timeout,
 Map<String,String> context)

Sets the allocation timeout. When no object is immediately available for an allocation request, the implementation of allocateObjectById(com.zeroc.Ice.Identity) and allocateObjectByType(java.lang.String) waits for the duration of this timeout.

Parameters:

timeout - The timeout in milliseconds.

context - the Context map to send with the invocation

setAllocationTimeoutAsync

default CompletableFuture<Void> setAllocationTimeoutAsync(int timeout)

Sets the allocation timeout. When no object is immediately available for an allocation request, the implementation of allocateObjectById(com.zeroc.Ice.Identity) and allocateObjectByType(java.lang.String) waits for the duration of this timeout.

Parameters:

timeout - The timeout in milliseconds.

Returns:

a future that will be completed when the invocation completes

setAllocationTimeoutAsync

default CompletableFuture<Void> setAllocationTimeoutAsync(int timeout,
 Map<String,String> context)

Sets the allocation timeout. When no object is immediately available for an allocation request, the implementation of allocateObjectById(com.zeroc.Ice.Identity) and allocateObjectByType(java.lang.String) waits for the duration of this timeout.

Parameters:

timeout - The timeout in milliseconds.

context - the Context map to send with the invocation

Returns:

a future that will be completed when the invocation completes

createProxy

static SessionPrx createProxy(Communicator communicator,
 String proxyString)

Creates a new proxy that implements SessionPrx.

Parameters:

communicator - the communicator of the new proxy

proxyString - the string representation of the proxy

Returns:

the new proxy

checkedCast

static SessionPrx checkedCast(ObjectPrx obj)

Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.

Parameters:

obj - the source proxy

Returns:

a proxy for this type, or null if the target object does not support this type

checkedCast

static SessionPrx checkedCast(ObjectPrx obj,
 Map<String,String> context)

Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.

Parameters:

obj - the source proxy

context - the Context map to send with the invocation

Returns:

a new proxy for this type, or null if the target object does not support this type

checkedCast

static SessionPrx checkedCast(ObjectPrx obj,
 String facet)

Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.

Parameters:

obj - the source proxy

facet - the name of the desired facet

Returns:

a new proxy for this type, or null if the facet does not support this type.

checkedCast

static SessionPrx checkedCast(ObjectPrx obj,
 String facet,
 Map<String,String> context)

Creates a new proxy from an existing proxy after confirming the target object's type via a remote invocation.

Parameters:

obj - the source proxy

facet - the name of the desired facet

context - the Context map to send with the invocation

Returns:

a new proxy for this type, or null if the target object does not support this type.

uncheckedCast

static SessionPrx uncheckedCast(ObjectPrx obj)

Creates a new proxy from an existing proxy.

Parameters:

obj - the source proxy

Returns:

a new proxy with this type or null if obj is null

uncheckedCast

static SessionPrx uncheckedCast(ObjectPrx obj,
 String facet)

Creates a new proxy from an existing proxy.

Parameters:

obj - the source proxy

facet - the name of the desired facet

Returns:

a new proxy with this type or null if obj is null

ice_context

SessionPrx ice_context(Map<String,String> newContext)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the per-proxy context.

Specified by:

ice_context in interface ObjectPrx

Specified by:

ice_context in interface SessionPrx

Parameters:

newContext - the context for the new proxy

Returns:

a proxy with the new per-proxy context

ice_adapterId

SessionPrx ice_adapterId(String newAdapterId)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the adapter ID.

Specified by:

ice_adapterId in interface ObjectPrx

Specified by:

ice_adapterId in interface SessionPrx

Parameters:

newAdapterId - the adapter ID for the new proxy

Returns:

a proxy with the new adapter ID

ice_endpoints

SessionPrx ice_endpoints(Endpoint[] newEndpoints)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the endpoints.

Specified by:

ice_endpoints in interface ObjectPrx

Specified by:

ice_endpoints in interface SessionPrx

Parameters:

newEndpoints - the endpoints for the new proxy

Returns:

a proxy with the new endpoints

ice_locatorCacheTimeout

SessionPrx ice_locatorCacheTimeout(int newTimeout)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the locator cache timeout.

Specified by:

ice_locatorCacheTimeout in interface ObjectPrx

Specified by:

ice_locatorCacheTimeout in interface SessionPrx

Parameters:

newTimeout - the new locator cache timeout (in seconds)

Returns:

a proxy with the new timeout

See Also:

• Locator

ice_invocationTimeout

SessionPrx ice_invocationTimeout(int newTimeout)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the invocation timeout.

Specified by:

ice_invocationTimeout in interface ObjectPrx

Specified by:

ice_invocationTimeout in interface SessionPrx

Parameters:

newTimeout - the new invocation timeout (in milliseconds)

Returns:

a proxy with the new timeout

ice_invocationTimeout

SessionPrx ice_invocationTimeout(Duration newTimeout)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the invocation timeout.

Specified by:

ice_invocationTimeout in interface ObjectPrx

Specified by:

ice_invocationTimeout in interface SessionPrx

Parameters:

newTimeout - the new invocation timeout

Returns:

a proxy with the new timeout

ice_connectionCached

SessionPrx ice_connectionCached(boolean newCache)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for connection caching.

Specified by:

ice_connectionCached in interface ObjectPrx

Specified by:

ice_connectionCached in interface SessionPrx

Parameters:

newCache - true if the new proxy should cache connections, false otherwise

Returns:

a proxy with the specified caching policy

ice_endpointSelection

SessionPrx ice_endpointSelection(EndpointSelectionType newType)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the endpoint selection policy.

Specified by:

ice_endpointSelection in interface ObjectPrx

Specified by:

ice_endpointSelection in interface SessionPrx

Parameters:

newType - the new endpoint selection policy

Returns:

a proxy with the specified endpoint selection policy

ice_encodingVersion

SessionPrx ice_encodingVersion(EncodingVersion e)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the encoding used to marshal parameters.

Specified by:

ice_encodingVersion in interface ObjectPrx

Specified by:

ice_encodingVersion in interface SessionPrx

Parameters:

e - the encoding version to use to marshal request parameters

Returns:

a proxy with the specified encoding version

ice_router

SessionPrx ice_router(RouterPrx router)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the router.

Specified by:

ice_router in interface ObjectPrx

Specified by:

ice_router in interface SessionPrx

Parameters:

router - the router for the new proxy

Returns:

a proxy with the specified router

ice_locator

SessionPrx ice_locator(LocatorPrx locator)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for the locator.

Specified by:

ice_locator in interface ObjectPrx

Specified by:

ice_locator in interface SessionPrx

Parameters:

locator - the locator for the new proxy

Returns:

a proxy with the specified locator

ice_collocationOptimized

SessionPrx ice_collocationOptimized(boolean b)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for collocation optimization.

Specified by:

ice_collocationOptimized in interface ObjectPrx

Specified by:

ice_collocationOptimized in interface SessionPrx

Parameters:

b - true if the new proxy enables collocation optimization, false otherwise

Returns:

a proxy with the specified collocation optimization

ice_twoway

SessionPrx ice_twoway()

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, but uses twoway invocations.

Specified by:

ice_twoway in interface ObjectPrx

Specified by:

ice_twoway in interface SessionPrx

Returns:

a proxy that uses twoway invocations

ice_oneway

SessionPrx ice_oneway()

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, but uses oneway invocations.

Specified by:

ice_oneway in interface ObjectPrx

Specified by:

ice_oneway in interface SessionPrx

Returns:

a proxy that uses oneway invocations

ice_batchOneway

SessionPrx ice_batchOneway()

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, but uses batch oneway invocations.

Specified by:

ice_batchOneway in interface ObjectPrx

Specified by:

ice_batchOneway in interface SessionPrx

Returns:

a proxy that uses batch oneway invocations

ice_datagram

SessionPrx ice_datagram()

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, but uses datagram invocations.

Specified by:

ice_datagram in interface ObjectPrx

Specified by:

ice_datagram in interface SessionPrx

Returns:

a proxy that uses datagram invocations

ice_batchDatagram

SessionPrx ice_batchDatagram()

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, but uses batch datagram invocations.

Specified by:

ice_batchDatagram in interface ObjectPrx

Specified by:

ice_batchDatagram in interface SessionPrx

Returns:

a proxy that uses batch datagram invocations

ice_compress

SessionPrx ice_compress(boolean co)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for its compression setting which overrides the compression setting from the proxy endpoints.

Specified by:

ice_compress in interface ObjectPrx

Specified by:

ice_compress in interface SessionPrx

Parameters:

co - true enables compression for the new proxy, false disables compression.

Returns:

a proxy with the specified compression override setting

ice_connectionId

SessionPrx ice_connectionId(String connectionId)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except for its connection ID.

Specified by:

ice_connectionId in interface ObjectPrx

Specified by:

ice_connectionId in interface SessionPrx

Parameters:

connectionId - the connection ID for the new proxy. An empty string removes the connection ID.

Returns:

a proxy with the specified connection ID

ice_fixed

SessionPrx ice_fixed(Connection connection)

Description copied from interface: ObjectPrx

Creates a proxy that is identical to this proxy, except it's a fixed proxy bound to the given connection.

Specified by:

ice_fixed in interface ObjectPrx

Specified by:

ice_fixed in interface SessionPrx

Parameters:

connection - the fixed proxy connection

Returns:

a fixed proxy bound to the given connection

ice_staticId

static String ice_staticId()

Gets the type ID of the associated Slice interface.

Returns:

the string "::IceGrid::Session"