ProviderSession Class Reference

#include <blpapi_providersession.h>

Inheritance diagram for ProviderSession:

Public Types
enum	ResolveMode {   AUTO_REGISTER_SERVICES = 1,   DONT_REGISTER_SERVICES = 0 }
typedef ::BloombergLP::blpapi::ProviderEventHandler	EventHandler

Public Member Functions
	ProviderSession (const SessionOptions &options=SessionOptions(), EventHandler *eventHandler=0, EventDispatcher *eventDispatcher=0)
virtual	~ProviderSession ()
virtual bool	start ()
virtual bool	startAsync ()
virtual void	stop ()
virtual void	stopAsync ()
virtual Event	nextEvent (int timeout=0)
virtual int	tryNextEvent (Event *event)
virtual bool	registerService (const char *serviceName, const Identity &providerIdentity=Identity(), const ServiceRegistrationOptions &registrationOptions=ServiceRegistrationOptions())
virtual void	activateSubServiceCodeRange (const char *serviceName, int begin, int end, int priority)
virtual void	deactivateSubServiceCodeRange (const char *serviceName, int begin, int end)
virtual CorrelationId	registerServiceAsync (const char *serviceName, const Identity &providerIdentity=Identity(), const CorrelationId &correlationId=CorrelationId(), const ServiceRegistrationOptions &registrationOptions=ServiceRegistrationOptions())
virtual bool	deregisterService (const char *serviceName)
virtual void	resolve (ResolutionList *resolutionList, ResolveMode resolveMode=DONT_REGISTER_SERVICES, const Identity &providerIdentity=Identity())
virtual void	resolveAsync (const ResolutionList &resolutionList, ResolveMode resolveMode=DONT_REGISTER_SERVICES, const Identity &providerIdentity=Identity())
virtual Topic	getTopic (const Message &message)
virtual Topic	createServiceStatusTopic (const Service &service)
virtual void	publish (const Event &event)
virtual void	sendResponse (const Event &event, bool isPartialResponse=false)
virtual void	createTopics (TopicList *topicList, ResolveMode resolveMode=DONT_REGISTER_SERVICES, const Identity &providerIdentity=Identity())
virtual void	createTopicsAsync (const TopicList &topicList, ResolveMode resolveMode=DONT_REGISTER_SERVICES, const Identity &providerIdentity=Identity())
virtual void	deleteTopic (const Topic &topic)
virtual void	deleteTopics (const std::vector< Topic > &topics)
virtual void	deleteTopics (const Topic *topics, size_t numTopics)
virtual void	terminateSubscriptionsOnTopic (const Topic &topic, const char *message=0)
virtual void	terminateSubscriptionsOnTopics (const std::vector< Topic > &topics, const char *message=0)
virtual void	terminateSubscriptionsOnTopics (const Topic *topics, size_t numTopics, const char *message=0)
virtual bool	flushPublishedEvents (int timeoutMsecs)
virtual bool	openService (const char *serviceIdentifier)
virtual CorrelationId	openServiceAsync (const char *serviceIdentifier, const CorrelationId &correlationId=CorrelationId())
virtual CorrelationId	sendAuthorizationRequest (const Request &authorizationRequest, Identity *identity, const CorrelationId &correlationId=CorrelationId(), EventQueue *eventQueue=0)
virtual void	cancel (const CorrelationId &correlationId)
virtual void	cancel (const std::vector< CorrelationId > &correlationIds)
virtual void	cancel (const CorrelationId *correlationIds, size_t numCorrelationIds)
virtual CorrelationId	generateToken (const CorrelationId &correlationId=CorrelationId(), EventQueue *eventQueue=0)
virtual CorrelationId	generateToken (const char *userId, const char *ipAddress, const CorrelationId &correlationId=CorrelationId(), EventQueue *eventQueue=0)
virtual Service	getService (const char *serviceIdentifier) const
virtual Identity	createIdentity ()
CorrelationId	generateAuthorizedIdentity (const AuthOptions &authOptions, const CorrelationId &cid=CorrelationId())
Identity	getAuthorizedIdentity (const CorrelationId &correlationId=CorrelationId())
DEPRECATED
virtual Topic	createTopic (const Message &message)
DEPRECATED
UserHandle	createUserHandle ()

Friends
void	blpapi_providerEventHandlerAdapter (blpapi_Event_t *event, blpapi_ProviderSession_t *session, void *userData)

Detailed Description

This class provides a session that can be used for providing services.

It inherits from AbstractSession. In addition to the AbstractSession functionality a ProviderSession provides the following functions to applications.

A provider can register to provide services using ProviderSession::registerService*. Before registering to provide a service the provider must have established its identity. Then the provider can create topics and publish events on topics. It can also get requests from the event queue and send responses back.

After users have registered a service they will start receiving subscription requests (TopicSubscribed message in TOPIC_STATUS) for topics which belong to the service. If the resolver has specified subServiceCode for topics in PermissionResponse, then only providers who have activated the subServiceCode will get the subscription request. Where multiple providers have registered the same service and sub-service code (if any), the provider that registered the highest priority for the sub-service code will receive subscription requests; if multiple providers have registered the same sub-service code with the same priority (or the resolver did not set a sub-service code for the subscription), the subscription request will be routed to one of the providers with the highest service priority.

See Component blpapi_providersession

Member Typedef Documentation

EventHandler

typedef ::BloombergLP::blpapi::ProviderEventHandler EventHandler

Member Enumeration Documentation

ResolveMode

enum ResolveMode

Enumerator
AUTO_REGISTER_SERVICES	Try to register services found in ResolutionList if necessary.
DONT_REGISTER_SERVICES	Fail to resolve a topic if the service has not already been registered.

Constructor & Destructor Documentation

ProviderSession()

ProviderSession ( const SessionOptions &  options = SessionOptions(), EventHandler *  eventHandler = 0, EventDispatcher *  eventDispatcher = 0  )

explicit

Construct a Session using the optionally specified options, the optionally specified eventHandler, and the optionally specified eventDispatcher.

See the SessionOptions documentation for details on what can be specified in the options.

If eventHandler is not null then this Session will operate in asynchronous mode; otherwise, the Session will operate in synchronous mode.

If eventDispatcher is null and a not null eventHandler is provided, then the Session will create an EventDispatcher for this Session which will use a single thread for dispatching events. For more control over event dispatching a specific instance of EventDispatcher can be supplied. This can be used to share a single EventDispatcher amongst multiple Session objects.

If an eventDispatcher is supplied which uses more than one thread the Session will ensure that events which should be ordered are passed to callbacks in a correct order. For example, partial response to a request or updates to a single subscription.

The behavior is undefined if eventHandler is null and the eventDispatcher is not null.

Each EventDispatcher uses its own thread or pool of threads so if you want to ensure that a session which receives very large messages and takes a long time to process them does not delay a session that receives small messages and processes each one very quickly then give each one a separate EventDispatcher.

~ProviderSession()

~ProviderSession ( )

virtual

Destructor.

Member Function Documentation

activateSubServiceCodeRange()

void activateSubServiceCodeRange ( const char *  serviceName, int  begin, int  end, int  priority  )

virtual

Register to receive, with the specified priority, subscriptions for the specified service that the resolver has mapped to a service code between the specified begin and the specified end values, inclusive. Numerically greater values of priority indicate higher priorities. The behavior of this function is undefined unless service has already been successfully registered, 0 <= begin <= end < (1 << 24), and priority is non-negative.

cancel() [1/3]

void cancel ( const CorrelationId &  correlationId )

virtualinherited

If the specified correlationId identifies a current request then cancel that request.

Once this call returns the specified correlationId will not be seen in any subsequent Message obtained from a MessageIterator by calling next(). However, any Message currently pointed to by a MessageIterator when cancel() is called is not affected even if it has the specified correlationId. Also any Message where a reference has been retained by the application may still contain the correlationId. For these reasons, although technically an application is free to re-use correlationId as soon as this method returns it is preferable not to aggressively re-use correlation IDs, particularly with an asynchronous Session.

cancel() [2/3]

void cancel ( const std::vector< CorrelationId > &  correlationIds )

virtualinherited

For each value in the specified correlationIds which identifies a current request then cancel that request. Any values in the specified correlationIds which do not identify a current request are ignored.

Once this call returns the specified correlationIds will not be seen in any subsequent Message obtained from a MessageIterator by calling next(). However, any Message currently pointed to by a MessageIterator when cancel() is called is not affected even if it has one of the specified correlationIds. Also any Message where a reference has been retained by the application may still contain one of the correlationIds. For these reasons, although technically an application is free to re-use any of the correlationIds as soon as this method returns it is preferable not to aggressively re-use correlation IDs, particularly with an asynchronous Session.

cancel() [3/3]

void cancel ( const CorrelationId *  correlationIds, size_t  numCorrelationIds  )

virtualinherited

For each value specified correlationIds and numCorrelationIds which identifies a current request then cancel that request. Any specified CorrelationId's which do not identify a current request are ignored.

Once this call returns the specified correlationIds will not be seen in any subsequent Message obtained from a MessageIterator by calling next(). However, any Message currently pointed to by a MessageIterator when cancel() is called is not affected even if it has one of the specified correlationIds. Also any Message where a reference has been retained by the application may still contain one of the correlationIds. For these reasons, although technically an application is free to re-use any of the correlationIds as soon as this method returns it is preferable not to aggressively re-use correlation IDs, particularly with an asynchronous Session.

createIdentity()

Identity createIdentity ( )

virtualinherited

Return a Identity which is valid but has not been authorized.

createServiceStatusTopic()

Topic createServiceStatusTopic ( const Service &  service )

virtual

Creates a Service Status Topic which is to be used to provide service status. On success invoking isValid() on the returned Topic will return false.

createTopic()

Topic createTopic ( const Message &  message )

virtual

Deprecated:

Use createTopics or createTopicsAsync instead.

Create a topic from the specified message, which must be of type ResolutionSuccess.

createTopics()

void createTopics ( TopicList *  topicList, ResolveMode  resolveMode = DONT_REGISTER_SERVICES, const Identity &  providerIdentity = Identity()  )

virtual

Creates the topics in the specified topicList and updates the topicList with the results of the creation process. If service needs to be registered, providerIdentity should be supplied. Once a call to this function returns, each entry in the topicList will have been updated with a new topic creation status.

Before createTopics() returns one or more RESOLUTION_STATUS events, zero or more SERVICE_STATUS events and one or more TOPIC_STATUS events are generated. If this is an asynchronous ProviderSession then these Events may be processed by the registered EventHandler before createTopics() has returned.

If providerIdentity is not provided, the session identity will be used if it has been authorized.

createTopicsAsync()

void createTopicsAsync ( const TopicList &  topicList, ResolveMode  resolveMode = DONT_REGISTER_SERVICES, const Identity &  providerIdentity = Identity()  )

virtual

Creates the topics in the specified topicList and updates the topicList with the results of the creation process. If service needs to be registered, providerIdentity should be supplied.

One or more RESOLUTION_STATUS events, zero or more SERVICE_STATUS events and one or more TOPIC_STATUS events are generated. If this is an asynchronous ProviderSession then these Events may be processed by the registered EventHandler before createTopics() has returned.

If providerIdentity is not provided, the session identity will be used if it has been authorized.

createUserHandle()

UserHandle createUserHandle ( )

inherited

Deprecated:

Use createIdentity() instead.

Return a UserHandle which is valid but has not been authorized.

deactivateSubServiceCodeRange()

void deactivateSubServiceCodeRange ( const char *  serviceName, int  begin, int  end  )

virtual

De-register to receive subscriptions for the specified service that the resolver has mapped to a service code between the specified begin and the specified end values, inclusive. The behavior of this function is undefined unless service has already been successfully registered and 0 <= begin <= end < (1 << 24).

deleteTopic()

void deleteTopic ( const Topic &  topic )

virtual

Remove one reference from the specified topic. If the number of times this function, terminateSubscriptionsOnTopic, updateResolvedTopics or requireNewPermissionCheck are called is the same as the number of times topic was created by createTopics, then topic is deleted: a TopicDeleted message is delivered, preceded by TopicDeactivated message (See TopicLife Cycle" for additional details). The behavior of this function is undefined if topic has already been deleted. Further, the behavior is undefined if a provider attempts to publish a message on a deleted topic.

deleteTopics() [1/2]

void deleteTopics ( const std::vector< Topic > &  topics )

virtual

Delete each topic in the specified topics. See deleteTopic(const Topic&) for additional details.

deleteTopics() [2/2]

void deleteTopics ( const Topic *  topics, size_t  numTopics  )

virtual

Delete the first numTopics elements of the specified topics array. See deleteTopic(const Topic&) for additional details.

deregisterService()

bool deregisterService ( const char *  serviceName )

virtual

Deregister the service, including all registered parts, identified by the specified serviceName. The identity in the service registration is reused to verify permissions for deregistration. If the service is not registered nor in pending registration, return false; return true otherwise. If the service is in pending registration, cancel the pending registration. If the service is registered, send a deregistration request; generate TOPIC_STATUS events containing a TopicUnsubscribed message for each subscribed topic, a TopicDeactivated message for each active topic and a TopicDeleted for each created topic; generate REQUEST_STATUS events containing a RequestFailure message for each pending incoming request; and generate a SERVICE_STATUS Event containing a ServiceDeregistered message. All published events on topics created on this service will be ignored after this method returns.

flushPublishedEvents()

bool flushPublishedEvents ( int  timeoutMsecs )

virtual

Wait at most timeoutMsecs milliseconds for all the published events to be sent through the underlying channel. The method returns either as soon as all the published events have been sent out or when it has waited timeoutMs milliseconds. Return true if all the published events have been sent; false otherwise. The behavior is undefined unless the specified timeoutMsecs is a non-negative value. When timeoutMsecs is 0, the method checks if all the published events have been sent and returns without waiting.

generateAuthorizedIdentity()

CorrelationId generateAuthorizedIdentity ( const AuthOptions &  authOptions, const CorrelationId &  cid = CorrelationId()  )

inherited

Generates an authorized Identity with the specified AuthOptions and optionally specified cid.

The optionally specified cid is used to track Event objects generated as a result of this call. Return the actual CorrelationId object that will identify the messages associated with the generated identity.

One or more AUTHORIZATION_STATUS events, zero or more TOKEN_STATUS events and zero or more SERVICE_STATUS events are generated. If this is an asynchronous session then these Events may be processed by the registered EventHandler before generateAuthorizedIdentity() has returned.

generateToken() [1/2]

CorrelationId generateToken ( const CorrelationId &  correlationId = CorrelationId(), EventQueue *  eventQueue = 0  )

virtualinherited

Generate a token to be used for authorization. If an invalid authentication option is specified in session option or there is a failure to get authentication information based on authentication option, or if the authentication mode is MANUAL for a user or user and application authentication, then an InvalidArgumentException is thrown.

generateToken() [2/2]

CorrelationId generateToken ( const char *  userId, const char *  ipAddress, const CorrelationId &  correlationId = CorrelationId(), EventQueue *  eventQueue = 0  )

virtualinherited

Generate a token to be used for authorization, using the specified userId and ipAddress. If the authentication mode is not MANUAL, if the userId or ipAddress are not valid or if there's a problem obtaining the authentication information based on the authentication options in SessionOptions, then an InvalidArgumentException is thrown.

getAuthorizedIdentity()

Identity getAuthorizedIdentity ( const CorrelationId &  correlationId = CorrelationId() )

inherited

Returns the authorized Identity associated with correlationId

A NotFoundException is thrown if there is no Identity associated with correlationId, if the associated Identity is not authorized, or if correlationId is not given and the session Identity is not authorized.

getService()

Service getService ( const char *  serviceIdentifier ) const

virtualinherited

Return a Service object representing the service identified by the specified serviceIdentifier

The serviceIdentifier must contain a fully qualified service name. That is, it must be of the form //<namespace>/<local-name>.

If the service identified by serviceIdentifier is not open or registered already then a NotFoundException is thrown.

getTopic()

Topic getTopic ( const Message &  message )

virtual

Finds a previously created Topic object based on the specified message. The message must be one of the following types: TopicCreated, TopicActivated, TopicDeactivated, TopicSubscribed, TopicUnsubscribed, TopicRecap. If the message is not valid then invoking isValid() on the returned Topic will return false.

nextEvent()

Event nextEvent ( int  timeout = 0 )

virtual

Return the next available Event for this session. If there is no event available this will block for up to the specified timeout in milliseconds for an Event to arrive. A value of 0 for timeout (the default) indicates nextEvent() should not timeout and will not return until the next Event is available.

If nextEvent() returns due to a timeout it will return an event of type EventType::TIMEOUT.

If this is invoked on a Session which was created in asynchronous mode an InvalidStateException is thrown.

Implements AbstractSession.

openService()

bool openService ( const char *  serviceIdentifier )

virtualinherited

Attempt to open the service identified by the specified serviceIdentifier and block until the service is either opened successfully or has failed to be opened. Return true if the service is opened successfully and false if the service cannot be successfully opened.

The serviceIdentifier must contain a fully qualified service name. That is, it must be of the form //<namespace>/<local-name>.

Before openService() returns a SERVICE_STATUS Event is generated. If this is an asynchronous Session then this Event may be processed by the registered EventHandler before openService() has returned.

openServiceAsync()

CorrelationId openServiceAsync ( const char *  serviceIdentifier, const CorrelationId &  correlationId = CorrelationId()  )

virtualinherited

Begin the process to open the service identified by the specified serviceIdentifier and return immediately. The optional specified correlationId is used to track Events generated as a result of this call. The actual correlationId which will identify Events generated as a result of this call is returned.

The serviceIdentifier must contain a fully qualified service name. That is, it must be of the form //<namespace>/<local-name>.

The application must monitor events for a SERVICE_STATUS Event which will be generated once the service has been successfully opened or the opening has failed.

publish()

void publish ( const Event &  event )

virtual

Publish messages contained in the specified event.

registerService()

bool registerService ( const char *  serviceName, const Identity &  providerIdentity = Identity(), const ServiceRegistrationOptions &  registrationOptions = ServiceRegistrationOptions()  )

virtual

Attempt to register the service identified by the specified serviceName and block until the service is either registered successfully or has failed to be registered. The optionally specified providerIdentity is used to verify permissions to provide the service being registered. The optionally specified registrationOptions is used to specify the group ID and service priority of the service being registered. Returns true if the service is registered successfully and false if the service cannot be registered successfully.

The serviceName must be a full qualified service name. That is it must be of the form //<namespace>/<local-name>.

This function does not return until a SERVICE_STATUS event has been generated. Note that if the session was created in asynchronous mode, the event may be processed before the function returns.

When providerIdentity is not provided, the session identity will be used if it has been authorized.

registerServiceAsync()

CorrelationId registerServiceAsync ( const char *  serviceName, const Identity &  providerIdentity = Identity(), const CorrelationId &  correlationId = CorrelationId(), const ServiceRegistrationOptions &  registrationOptions = ServiceRegistrationOptions()  )

virtual

Begin the process of registering the service identified by the specified serviceName and return immediately. The optionally specified providerIdentity is used to verify permissions to provide the service being registered. The optionally specified correlationId is used to identify Message objects generated as a result of this call. Return the actual CorrelationId object that will identify Message objects. The optionally specified registrationOptions is used to specify the group ID and service priority of the service being registered.

The serviceName must be a full qualified service name. That is it must be of the form //<namespace>/<local-name>.

The application must monitor events for a SERVICE_STATUS Event which will be generated once the service has been successfully registered or registration has failed.

When providerIdentity is not provided, the session identity will be used if it has been authorized.

resolve()

void resolve ( ResolutionList *  resolutionList, ResolveMode  resolveMode = DONT_REGISTER_SERVICES, const Identity &  providerIdentity = Identity()  )

virtual

Resolves the topics in the specified resolutionList and updates the resolutionList with the results of the resolution process. If the specified resolveMode is ResolveMode::DONT_REGISTER_SERVICES (the default) then all the services referenced in the topics in the resolutionList must already have been registered using registerService(). If resolveMode is ResolveMode::AUTO_REGISTER_SERVICES then the specified providerIdentity should be supplied and ProviderSession will automatically attempt to register any services reference in the topics in the resolutionList that have not already been registered. Once resolve() returns each entry in the resolutionList will have been updated with a new status.

Before resolve() returns one or more RESOLUTION_STATUS events and, if resolveMode is ResolveMode::AUTO_REGISTER_SERVICES, zero or more SERVICE_STATUS events are generated. If this is an asynchronous ProviderSession then these Events may be processed by the processed by the EventHandler before resolve() has returned.

If providerIdentity is not provided, the session identity will be used if it has been authorized.

resolveAsync()

void resolveAsync ( const ResolutionList &  resolutionList, ResolveMode  resolveMode = DONT_REGISTER_SERVICES, const Identity &  providerIdentity = Identity()  )

virtual

Begin the resolution of the topics in the specified resolutionList. If the specified resolveMode is ResolveMode::DONT_REGISTER_SERVICES (the default) then all the services referenced in the topics in the resolutionList must already have been registered using registerService(). If resolveMode is ResolveMode::AUTO_REGISTER_SERVICES then the specified providerIdentity should be supplied and ProviderSession will automatically attempt to register any services reference in the topics in the resolutionList that have not already been registered.

One or more RESOLUTION_STATUS events will be delivered with the results of the resolution. These events may be generated before or after resolve() returns. If ResolveMode::AUTO_REGISTER_SERVICES is specified SERVICE_STATUS events may also be generated before or after resolve() returns.

If providerIdentity is not provided, the session identity will be used if it has been authorized.

sendAuthorizationRequest()

CorrelationId sendAuthorizationRequest ( const Request &  authorizationRequest, Identity *  identity, const CorrelationId &  correlationId = CorrelationId(), EventQueue *  eventQueue = 0  )

virtualinherited

Send the specified authorizationRequest and update the specified identity with the results. If the optionally specified correlationId is supplied, it is used; otherwise create a CorrelationId. The actual CorrelationId used is returned. If the optionally specified eventQueue is supplied all Events relating to this Request will arrive on that EventQueue.

A successful request will generate zero or more PARTIAL_RESPONSE Messages followed by exactly one RESPONSE Message. Once the final RESPONSE Message has been received the specified identity will have been updated to contain the users entitlement information and the CorrelationId associated with the request may be re-used. If the request fails at any stage a REQUEST_STATUS will be generated, the specified identity will not be modified and the CorrelationId may be re-used.

The identity supplied must have been returned from this Session's createIdentity() method. For example

Identity handle(session.createIdentity());
session.sendAuthorizationRequest(authRequest, &handle, ...)

sendResponse()

void sendResponse ( const Event &  event, bool  isPartialResponse = false  )

virtual

Send the response event for previously received request. If isPartialResponse is false, cleans up all the internal state associated with the request.

start()

bool start ( )

virtual

Attempt to start this Session and blocks until the Session has started or failed to start. If the Session is started successfully true is returned, otherwise false is returned. Before start() returns a SESSION_STATUS Event is generated. If this is an asynchronous Session then the SESSION_STATUS may be processed by the registered EventHandler before start() has returned. A Session may only be started once.

Implements AbstractSession.

startAsync()

bool startAsync ( )

virtual

Attempt to begin the process to start this Session and return true if successful, otherwise return false. The application must monitor events for a SESSION_STATUS Event which will be generated once the Session has started or if it fails to start. If this is an asynchronous Session then the SESSION_STATUS Event may be processed by the registered EventHandler before startAsync() has returned. A Session may only be started once.

Implements AbstractSession.

stop()

void stop ( )

virtual

Stop operation of this session and block until all callbacks to EventHandler objects relating to this Session which are currently in progress have completed (including the callback to handle the SESSION_STATUS Event with SessionTerminated message this call generates). Once this returns no further callbacks to EventHandlers will occur. If stop() is called from within an EventHandler callback the behavior is undefined and may result in a deadlock. Once a Session has been stopped it can only be destroyed.

Implements AbstractSession.

stopAsync()

void stopAsync ( )

virtual

Begin the process to stop this Session and return immediately. The application must monitor events for a SESSION_STATUS Event with SessionTerminated message which will be generated once the Session has been stopped. After this SESSION_STATUS Event no further callbacks to EventHandlers will occur. This method can be called from within an EventHandler callback to stop Sessions using non-default (external) EventDispatcher. Once a Session has been stopped it can only be destroyed.

Implements AbstractSession.

terminateSubscriptionsOnTopic()

void terminateSubscriptionsOnTopic ( const Topic &  topic, const char *  message = 0  )

virtual

Delete the specified topic (See deleteTopic(const Topic&) for additional details). Furthermore, proactively terminate all current subscriptions on topic. The optionally specified message can be used to convey additional information to subscribers regarding the termination. This message is contained in the description of reason in a SubscriptionTerminated message.

terminateSubscriptionsOnTopics() [1/2]

void terminateSubscriptionsOnTopics ( const std::vector< Topic > &  topics, const char *  message = 0  )

virtual

Terminate subscriptions on each topic in the specified topics. See terminateSubscriptionsOnTopic(const Topic&, const char* message) for additional details.

terminateSubscriptionsOnTopics() [2/2]

void terminateSubscriptionsOnTopics ( const Topic *  topics, size_t  numTopics, const char *  message = 0  )

virtual

Terminate subscriptions on the first numTopics topics in the specified topics. See terminateSubscriptionsOnTopic(const Topic&, const char* message) for additional details.

tryNextEvent()

int tryNextEvent ( Event *  event )

virtual

If there are Events available for the session, load the next Event into event and return 0 indicating success. If there is no event available for the session, return a non-zero value with no effect on event. This method never blocks.

Implements AbstractSession.

Friends And Related Function Documentation

blpapi_providerEventHandlerAdapter

void blpapi_providerEventHandlerAdapter ( blpapi_Event_t *  event, blpapi_ProviderSession_t *  session, void *  userData  )

friend

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The documentation for this class was generated from the following file:

• blpapi_providersession.h