com.dxfeed.api.impl
Class DXFeedImpl
java.lang.Object
com.dxfeed.api.DXFeed
com.dxfeed.api.impl.DXFeedImpl
public class DXFeedImpl
- extends DXFeed
Constructor Summary |
DXFeedImpl(java.util.concurrent.Executor executor,
com.devexperts.qd.QDCollector... collectors)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DXFeedImpl
public DXFeedImpl(java.util.concurrent.Executor executor,
com.devexperts.qd.QDCollector... collectors)
connect
public void connect(java.lang.String address)
attachSubscription
public void attachSubscription(DXFeedSubscription subscription)
- Description copied from class:
DXFeed
- Attaches the given subscription to this feed. This method does nothing if the
corresponding subscription is already attached to this feed.
This method adds a non-serializable class as a
DXFeedSubscriptionChangeListener
for the given subscription
via DXFeedSubscription.addSubscriptionChangeListener(com.dxfeed.api.DXFeedSubscriptionChangeListener)
method.
Attachment is lost when subscription is serialized.
- Specified by:
attachSubscription
in class DXFeed
- Parameters:
subscription
- the subscription.- See Also:
DXFeedSubscription
detachSubscription
public void detachSubscription(DXFeedSubscription subscription)
- Description copied from class:
DXFeed
- Detaches the given subscription from this feed. This method does nothing if the
corresponding subscription is not attached to this feed.
This method removes a class as a
DXFeedSubscriptionChangeListener
for the given subscription
via DXFeedSubscription.removeSubscriptionChangeListener(com.dxfeed.api.DXFeedSubscriptionChangeListener)
method.
- Specified by:
detachSubscription
in class DXFeed
- Parameters:
subscription
- the subscription.- See Also:
DXFeedSubscription
getLastEvent
public <T extends Event> T getLastEvent(T event)
- Description copied from class:
DXFeed
- Returns the last event for the specified symbol and event type. This method goes not make
any remote calls to the uplink data provider. It just retrieves last received event
from the local cache of this feed. The events are stored in the cache only if there is some
attached
DXFeedSubscription
that is subscribed to the corresponding symbol and event type.
This method fills in the values for the last event into the event
argument.
If the last event is not avilable for any reason (no subscription, no connection to uplink,
not applicable to this event type, etc), then the event object is not changed.
This method always returns the same event
that is passed to it as an argument.
- Specified by:
getLastEvent
in class DXFeed
- Type Parameters:
T
- the event type.- Parameters:
event
- the event.
- Returns:
- the event.