Package org.eclipse.rdf4j.model.util

Class Configurations

java.lang.Object

org.eclipse.rdf4j.model.util.Configurations

@InternalUseOnly
public class Configurations
extends Object

Utility functions for working with RDF4J Models representing configuration settings.

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
Configurations()

Method Summary

Modifier and Type	Method	Description
static Optional<IRI>	getIRIValue(Model model, Resource subject, IRI property, IRI legacyProperty)	Retrieve a property value for the supplied subject as a IRI if present, falling back to a supplied legacy property .
static Optional<Literal>	getLiteralValue(Model model, Resource subject, IRI property, IRI legacyProperty)	Retrieve a property value for the supplied subject as a Literal if present, falling back to a supplied legacy property .
static Set<Value>	getPropertyValues(Model model, Resource subject, IRI property, IRI legacyProperty)	Retrieve all property values for the supplied subject as a Set of values and include all values for any legacy property.
static Optional<Resource>	getResourceValue(Model model, Resource subject, IRI property, IRI legacyProperty)	Retrieve a property value for the supplied subject as a Resource if present, falling back to a supplied legacy property .
static Optional<Resource>	getSubjectByType(Model model, IRI type, IRI legacyType)	Retrieve the subject of the supplied type, falling back to a supplied legacy type.
static Optional<Value>	getValue(Model model, Resource subject, IRI property, IRI legacyProperty)	Retrieve a property value for the supplied subject as a Value if present, falling back to a supplied legacy property .
static boolean	hasLegacyConfiguration(Model configModel)	Verifies if the supplied configuration model uses any legacy vocabulary by checking the IRIs of its properties
static boolean	useLegacyConfig()	Verifies if use of legacy configuration vocabulary is preferred.

Methods inherited from class java.lang.Object

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

Constructor Details

Configurations

public Configurations()

Method Details

useLegacyConfig

public static boolean useLegacyConfig()

Verifies if use of legacy configuration vocabulary is preferred. Defaults to false. Can be set by having a system property org.eclipse.rdf4j.model.vocabulary.useLegacyConfig set to true.

Returns:

true if org.eclipse.rdf4j.model.vocabulary.useLegacyConfig system property is set to true, false otherwise.

Since:

5.0.0

hasLegacyConfiguration

public static boolean hasLegacyConfiguration(Model configModel)

Verifies if the supplied configuration model uses any legacy vocabulary by checking the IRIs of its properties

Parameters:

configModel - a configuration model

Returns:

true if any property IRIs start with http://www.openrdf.org/config, false otherwise.

getResourceValue

@InternalUseOnly
public static Optional<Resource> getResourceValue(Model model,
 Resource subject,
 IRI property,
 IRI legacyProperty)

Retrieve a property value for the supplied subject as a Resource if present, falling back to a supplied legacy property .

This method allows querying repository config models with a mix of old and new namespaces.

Parameters:

model - the model to retrieve property values from.

subject - the subject of the property.

property - the property to retrieve the value of.

legacyProperty - legacy property to use if the supplied property has no value in the model.

Returns:

the resource value for supplied subject and property (or the legacy property ), if present.

getLiteralValue

@InternalUseOnly
public static Optional<Literal> getLiteralValue(Model model,
 Resource subject,
 IRI property,
 IRI legacyProperty)

Retrieve a property value for the supplied subject as a Literal if present, falling back to a supplied legacy property .

This method allows querying repository config models with a mix of old and new namespaces.

Parameters:

model - the model to retrieve property values from.

subject - the subject of the property.

property - the property to retrieve the value of.

legacyProperty - legacy property to use if the supplied property has no value in the model.

Returns:

the literal value for supplied subject and property (or the legacy property ), if present.

getValue

@InternalUseOnly
public static Optional<Value> getValue(Model model,
 Resource subject,
 IRI property,
 IRI legacyProperty)

Retrieve a property value for the supplied subject as a Value if present, falling back to a supplied legacy property .

This method allows querying repository config models with a mix of old and new namespaces.

Parameters:

model - the model to retrieve property values from.

subject - the subject of the property.

property - the property to retrieve the value of.

legacyProperty - legacy property to use if the supplied property has no value in the model.

Returns:

the literal value for supplied subject and property (or the legacy property ), if present.

getPropertyValues

@InternalUseOnly
public static Set<Value> getPropertyValues(Model model,
 Resource subject,
 IRI property,
 IRI legacyProperty)

Retrieve all property values for the supplied subject as a Set of values and include all values for any legacy property.

This method allows querying repository config models with a mix of old and new namespaces.

Parameters:

model - the model to retrieve property values from.

subject - the subject of the property.

property - the property to retrieve the values of.

legacyProperty - legacy property to retrieve values of.

Returns:

the set of values for supplied subject and property (and/or legacy property).

getIRIValue

@InternalUseOnly
public static Optional<IRI> getIRIValue(Model model,
 Resource subject,
 IRI property,
 IRI legacyProperty)

Retrieve a property value for the supplied subject as a IRI if present, falling back to a supplied legacy property .

This method allows querying repository config models with a mix of old and new namespaces.

Parameters:

model - the model to retrieve property values from.

subject - the subject of the property.

property - the property to retrieve the value of.

legacyProperty - legacy property to use if the supplied property has no value in the model.

Returns:

the IRI value for supplied subject and property (or the legacy property ), if present.

getSubjectByType

@InternalUseOnly
public static Optional<Resource> getSubjectByType(Model model,
 IRI type,
 IRI legacyType)

Retrieve the subject of the supplied type, falling back to a supplied legacy type.

Parameters:

model - the model to retrieve property values from.

type - the type to retrieve the value of.

legacyType - legacy type to use if the supplied type has no value in the model.

Returns:

The subject of the supplied type (or the legacy type), if present.