Package com.sodius.oslc.server.trs.model
Interface TrackedResourceCollector
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public interface TrackedResourceCollector
A tracked resources (and their change events) collector.- Since:
- 1.10.0
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static class
TrackedResourceCollector.EventCollectorStrategy
Determines when to collect resource events.
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description void
collectBaseMembers(Collection<ProjectArea> trsExposedProjects, Person trsFunctionalUser, Consumer<ResourceSeed> baseMembersConsumer)
Collects all base members.default void
collectResourceEventsAfter(Date after, Collection<ProjectArea> trsExposedProjects, Person trsFunctionalUser, Consumer<ResourceEvent> resourceEventsConsumer)
Collects latestchange events
after a moment in time.default TrackedResourceCollector.EventCollectorStrategy
getEventCollectorStrategy()
Determines when to collect events by querying changes in the host application.
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Method Detail
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collectBaseMembers
void collectBaseMembers(Collection<ProjectArea> trsExposedProjects, Person trsFunctionalUser, Consumer<ResourceSeed> baseMembersConsumer)
Collects all base members. Implementation must notify the consumer of each artifact of the application that must be reported as TRS base member. Consumers may raiseCancellationException
to indicate the collecting process must stop, but implementations must no propagate this exception, this is a convenient way to stop a searching process.- Parameters:
trsExposedProjects
- the collection of TRS exposed projects. The project identifier is available through thedcterms:identifier
extended property.trsFunctionalUser
- the TRS functional user.baseMembersConsumer
- base members consumer.- Throws:
CompletionException
- if consumer raise it to stop the collecting process due an error occurred.- Since:
- 3.3.0
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getEventCollectorStrategy
default TrackedResourceCollector.EventCollectorStrategy getEventCollectorStrategy()
Determines when to collect events by querying changes in the host application. Default implementation returnsTrackedResourceCollector.EventCollectorStrategy.NEVER
, which impliescollectResourceEventsAfter
is never called. Subclasses that overridecollectResourceEventsAfter
must also override this method to either returnTrackedResourceCollector.EventCollectorStrategy.STARTUP
orTrackedResourceCollector.EventCollectorStrategy.ALWAYS
.- Returns:
- the strategy indicating when to collect resource events
- Since:
- 3.7.0
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collectResourceEventsAfter
default void collectResourceEventsAfter(Date after, Collection<ProjectArea> trsExposedProjects, Person trsFunctionalUser, Consumer<ResourceEvent> resourceEventsConsumer)
Collects latestchange events
after a moment in time. Implementations must call thisconsumer's accept method
per change event sinceafter
chronologically - this means older events first and newer events last.Implementers are advised to prefer using listeners in the application to record events as they occur with
ResourceEventStore.store(ResourceEvent...)
, which is the most reliable way to handle large volume of events. This method should be implemented in following cases:- Some changes can be queried in the application and cannot be captured using a listener.
- TRS implementation is started after the host application or can be disabled for a period of time, which makes some events not to be captured by listeners
CancellationException
to indicate the collecting process must stop, but implementations must no propagate this exception, this is a convenient way to stop a searching process.Default implementation throws
UnsupportedOperationException
, as default implementation ofgetEventCollectorStrategy()
is to returnNEVER
. Applications overridinggetEventCollectorStrategy()
must also override this method.- Parameters:
after
- the reference time to search changed resources.trsExposedProjects
- the collection of TRS exposed projects. The project identifier is available through thedcterms:identifier
extended property.trsFunctionalUser
- the TRS functional user.resourceEventsConsumer
- change events consumer.- Throws:
CompletionException
- if consumer raise it to stop the collecting process due an error occurred.- Since:
- 3.3.0
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