edu.cornell.mannlib.vitro.webapp.modelaccess.impl

Class RequestModelAccessImpl

java.lang.Object

edu.cornell.mannlib.vitro.webapp.modelaccess.impl.RequestModelAccessImpl

All Implemented Interfaces:

RequestModelAccess

public class RequestModelAccessImpl
extends Object
implements RequestModelAccess

For each category of data structure, the pattern is the same: Build a key from the supplied options. If the cache contains a structure with that key, return it. Otherwise, create the requested structure, often from a simplified version. For example, if the request was for a LANGUAGE_AWARE RDFService, get the LANGUAGE_NEUTRAL RDFService and wrap it with langauge awareness. This second step is a recursive call, so we check again to see if the cache contains the new requested structure based on a modified key. If it does contain the structure, use it. Otherwise, create it. Eventually, we reach a request for the simplest structure, which we fetch from the ShortTermDataStructuresFactory. If the request includes language-awareness, the structure can be created from the language-neutral version. If language-awareness is disabled, the language-neutral structure will be cached under two different keys. ---------------------------------------- There are two hacks here to support model switching: one in the OntModels and one in the WebappDaoFactories. These are hacks for several reasons, not the least of which is that the model switching will not be available on WebappDaoFactories based on ASSERTIONS_ONLY or INFERENCES_ONLY, and similarly for the OntModel.

Constructor Summary

Constructors

Constructor and Description
RequestModelAccessImpl(javax.servlet.http.HttpServletRequest req, ShortTermCombinedTripleSource source)

Method Summary

Modifier and Type	Method and Description
void	close() When finished, release any resources.
org.apache.jena.query.Dataset	getDataset(ModelAccess.DatasetOption... options) Get a Dataset: CONTENT or CONFIGURATION, Language-aware or not.
org.apache.jena.ontology.OntModel	getOntModel(ModelAccess.LanguageOption... options) Get the FULL_UNION OntModel: Language-aware or not.
org.apache.jena.ontology.OntModel	getOntModel(String name, ModelAccess.LanguageOption... options) Get an OntModel: Language-aware or not.
OntModelSelector	getOntModelSelector(ModelAccess.OntModelSelectorOption... options) Get an OntModelSelector: Language-aware or not, ASSERTIONS or INFERENCES or both.
RDFService	getRDFService(ModelAccess.RdfServiceOption... options) Get an RDFService: CONTENT or CONFIGURATION, Language-aware or not.
WebappDaoFactory	getWebappDaoFactory(ModelAccess.WebappDaoFactoryOption... options) Get a WebappDaoFactory: Filtered or not, Language-aware or not, ASSERTIONS or INFERENCES or both.
void	setSpecialWriteModel(org.apache.jena.ontology.OntModel mainOntModel) TODO Hack for model switching.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RequestModelAccessImpl

public RequestModelAccessImpl(javax.servlet.http.HttpServletRequest req,
                              ShortTermCombinedTripleSource source)

Method Detail

close

public void close()

Description copied from interface: RequestModelAccess

When finished, release any resources.

Specified by:

close in interface RequestModelAccess

toString

public String toString()

Overrides:

toString in class Object

getRDFService

public RDFService getRDFService(ModelAccess.RdfServiceOption... options)

Description copied from interface: RequestModelAccess

Get an RDFService: CONTENT or CONFIGURATION, Language-aware or not.

Specified by:

getRDFService in interface RequestModelAccess

getDataset

public org.apache.jena.query.Dataset getDataset(ModelAccess.DatasetOption... options)

Description copied from interface: RequestModelAccess

Get a Dataset: CONTENT or CONFIGURATION, Language-aware or not.

Specified by:

getDataset in interface RequestModelAccess

getOntModel

public org.apache.jena.ontology.OntModel getOntModel(ModelAccess.LanguageOption... options)

Description copied from interface: RequestModelAccess

Get the FULL_UNION OntModel: Language-aware or not.

Specified by:

getOntModel in interface RequestModelAccess

getOntModel

public org.apache.jena.ontology.OntModel getOntModel(String name,
                                                     ModelAccess.LanguageOption... options)

Description copied from interface: RequestModelAccess

Get an OntModel: Language-aware or not.

Specified by:

getOntModel in interface RequestModelAccess

setSpecialWriteModel

public void setSpecialWriteModel(org.apache.jena.ontology.OntModel mainOntModel)

TODO Hack for model switching.

getOntModelSelector

public OntModelSelector getOntModelSelector(ModelAccess.OntModelSelectorOption... options)

Description copied from interface: RequestModelAccess

Get an OntModelSelector: Language-aware or not, ASSERTIONS or INFERENCES or both.

Specified by:

getOntModelSelector in interface RequestModelAccess

getWebappDaoFactory

public WebappDaoFactory getWebappDaoFactory(ModelAccess.WebappDaoFactoryOption... options)

Description copied from interface: RequestModelAccess

Get a WebappDaoFactory: Filtered or not, Language-aware or not, ASSERTIONS or INFERENCES or both.

Specified by:

getWebappDaoFactory in interface RequestModelAccess