Package ddf.catalog.util.impl

Provides utility classes for the Catalog.

See: Description

Interface Summary

Interface	Description
QueryFunction	Functional interface used to abstract away methods that take in a QueryRequest and return a SourceResponse.
ServiceSelectionStrategy<T>	This interface represents the strategy used by ServiceSelector instances for selecting which service to return from a call to ServiceSelector.getService().

Class Summary

Class	Description
CachedSource
CollectionResultComparator
DescribableImpl	Default implementation of the Describable interface, providing basic setter/getter methods for a describable item's ID, title, version, organization, and description.
DescribableServiceMap<V extends Describable>
DistanceResultComparator	Comparator for the distance (in meters) of 2 Result objects.
FirstElementServiceSelectionStrategy<T>	This is a basic implementation of ServiceSelectionStrategy which returns the first element from the supplied java.util.SortedSet.
ListConverter	This converter is used to allow SortedServiceList objects to pass through for List implementations.
MapConverter	This converter is used to allow DescribableServiceMap objects to pass through for Map implementations.
MaskableImpl	Implementation of the Maskable interface that provides methods to set the masked ID of the item and the ID of the item if it has not yet been masked.
Masker	A utility used to mask the source ID for all maskable items that have their own name (ID).
RelevanceResultComparator	Comparator for the relevance of 2 Result objects.
Requests	Class for static request helper method
ResultIterable	Class used to iterate over the Result objects contained in a QueryResponse returned when executing a QueryRequest.
ServiceComparator	Comparator for OSGi ServiceReference objects.
ServiceReferenceListConverter	This converter is used to allow ServiceReferenceListConverter objects to pass through for List implementations.
ServiceSelector<T>	The ServiceSelector maintains a sorted set of bound OSGi services and provides user access to those services.
ServiceSelectorConverter	This converter is used to allow ServiceSelector objects to pass through for List implementations.
SortedServiceList<T>	This utility object sorts Services by their service rankings first and then breaks ties with service ids.
SortedServiceReferenceList	This utility object sorts ServiceReferences by their service rankings first and then breaks ties with service ids.
SourceDescriptorComparator	Comparator for the sourceId of 2 SourceDescriptor objects
SourcePoller	The SourcePoller is the scheduler of the task to poll all configured sources at a fixed interval to determine their availability.
SourcePollerRunner	The poller to check the availability of all configured sources.
TemporalResultComparator	Comparator for the temporal attribute of 2 Result objects.

Exception Summary

Exception	Description
CatalogQueryException	Exception used to wrap checked exceptions thrown by CatalogFramework.query(ddf.catalog.operation.QueryRequest) methods.

Package ddf.catalog.util.impl Description

Provides utility classes for the Catalog.