Package org.apache.clerezza.dataset

This package provides access to named ImmutableGraphS and GraphS that may originate from various implementations.

See: Description

Interface Summary

Interface	Description
QueryableTcProvider	Extends the TcProvider interface for providers that support sparql queries.
TcProvider	A TC (Graph) Provider allows access to and optionally creation of named ImmutableGraphs and Graphs (mutable graphs)
WeightedTcProvider	This interface is implemented by providers to which TcManager delegates.

Class Summary

Class	Description
ImmutableGraphServiceFactory
MGraphServiceFactory
SecuredGraph	A Secured triple collection wraps a triple collection checking each access for the rights on a the ImmutableGraph for which the uri is passed to the constructor.
TcManager	This class extends TcProviderMultiplexer, delegating the actual provision and creation of Graphs or MGraphs to registered WeightedTcProviders.
TcProviderMultiplexer	This makes a set of WeightedTcProvider appear as one TcProvider.
WeightedProviderComparator	Compares the WeightedTcManagementProviders, descending for weight and ascending by name

Exception Summary

Exception	Description
EntityAlreadyExistsException	is thrown on an attempt to create an entity with a name which already exists
EntityUndeletableException	is thrown on an attempt to delete an entity with a provider that supports the delete operation when the specified entity cannot be deleted
NoSuchEntityException	is thrown on an attempt to perform an operation on an entity (i.e.

Package org.apache.clerezza.dataset Description

This package provides access to named ImmutableGraphS and GraphS that may originate from various implementations.

Accessing

If running in a dependency injection system you should get an instance of TcManager by the framework, otherwise use the static method TcManager.getInstance .

Adding a provider

A provider implements WeightedTcProvider.

To work outside a component injection framework it contains a file META-INF/services/org.apache.clerezza.dataset.WeightedTcProvider containing the name of the implementing class.

To work in a OSGi-DS context the provider register a component exposing org.apache.clerezza.dataset.WeightedTcProvider as service interface.