edu.cornell.mannlib.vitro.webapp.modelaccess

Class ModelAccess

java.lang.Object

edu.cornell.mannlib.vitro.webapp.modelaccess.ModelAccess

public class ModelAccess
extends Object

The root access point for the RDF data structures: RDFServices, Datasets, ModelMakers, OntModels, OntModelSelectors and WebappDaoFactories. Get a long-term data structure by accessing from the context. Get a short-term data structure by accessing from the request.

 ModelAccess.on(ctx).getRDFService(CONFIGURATION);
 ModelAccess.on(req).getOntModel(ModelNames.DISPLAY);
 

------------------------------------ The elaborate structure of options enums allows us to specify method signatures like this on RequestModelAccess:

 getOntModelSelector(OntModelSelectorOption... options);
 

Which can be invoked in any of these ways:

 ModelAccess.on(req).getOntModelSelector();
 ModelAccess.on(req).getOntModelSelector(LANGUAGE_NEUTRAL);
 ModelAccess.on(req).getOntModelSelector(INFERENCES_ONLY);
 ModelAccess.on(req).getOntModelSelector(ASSERTIONS_ONLY, LANGUAGE_NEUTRAL);
 

The compiler insures that only appropriate options are specified. However, if conflicting options are supplied, it will only be caught at runtime.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ModelAccess.DatasetOption
static class	ModelAccess.LanguageOption
static class	ModelAccess.ModelAccessFactory
static interface	ModelAccess.ModelAccessOption
static interface	ModelAccess.OntModelSelectorOption
static class	ModelAccess.PolicyOption
static interface	ModelAccess.RdfServiceOption
static class	ModelAccess.ReasoningOption
static interface	ModelAccess.WebappDaoFactoryOption
static class	ModelAccess.WhichService

Field Summary

Fields

Modifier and Type	Field and Description
static ModelAccess.ReasoningOption	ASSERTIONS_AND_INFERENCES
static ModelAccess.ReasoningOption	ASSERTIONS_ONLY
static ModelAccess.WhichService	CONFIGURATION
static ModelAccess.WhichService	CONTENT
static ModelAccess.ReasoningOption	INFERENCES_ONLY
static ModelAccess.LanguageOption	LANGUAGE_AWARE
static ModelAccess.LanguageOption	LANGUAGE_NEUTRAL
static ModelAccess.PolicyOption	POLICY_AWARE
static ModelAccess.PolicyOption	POLICY_NEUTRAL

Constructor Summary

Constructors

Constructor and Description
ModelAccess()

Method Summary

Modifier and Type	Method and Description
static boolean	isPresent(javax.servlet.http.HttpServletRequest req)
static RequestModelAccess	on(javax.servlet.http.HttpServletRequest req)
static ContextModelAccess	on(javax.servlet.ServletContext ctx)
static void	setCombinedTripleSource(CombinedTripleSource source)

Methods inherited from class java.lang.Object

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

Field Detail

LANGUAGE_NEUTRAL

public static final ModelAccess.LanguageOption LANGUAGE_NEUTRAL

LANGUAGE_AWARE

public static final ModelAccess.LanguageOption LANGUAGE_AWARE

ASSERTIONS_ONLY

public static final ModelAccess.ReasoningOption ASSERTIONS_ONLY

INFERENCES_ONLY

public static final ModelAccess.ReasoningOption INFERENCES_ONLY

ASSERTIONS_AND_INFERENCES

public static final ModelAccess.ReasoningOption ASSERTIONS_AND_INFERENCES

POLICY_NEUTRAL

public static final ModelAccess.PolicyOption POLICY_NEUTRAL

POLICY_AWARE

public static final ModelAccess.PolicyOption POLICY_AWARE

CONTENT

public static final ModelAccess.WhichService CONTENT

CONFIGURATION

public static final ModelAccess.WhichService CONFIGURATION

Constructor Detail

ModelAccess

public ModelAccess()

Method Detail

setCombinedTripleSource

public static void setCombinedTripleSource(CombinedTripleSource source)

on

public static RequestModelAccess on(javax.servlet.http.HttpServletRequest req)

isPresent

public static boolean isPresent(javax.servlet.http.HttpServletRequest req)

on

public static ContextModelAccess on(javax.servlet.ServletContext ctx)