org.ontoware.rdfreactor.runtime

Class BridgeBase

java.lang.Object

org.ontoware.rdfreactor.runtime.BridgeBase

Direct Known Subclasses:

Bridge

public class BridgeBase
extends Object

BridgeBase provides methods for adding, querying and deleting statements from the underlying RDF2Go model. TODO: be type-safe
RDF Reactor uses the following naming: resource - instance of an RDF schema class, identified by the resource ID (an URI or BlankNode), allmost all statements about the resource use the resource ID as the object property - a property belongs to a resource, represented by the predicate of a statement about a resource value - value of a property of a resource, represented by the object of the statement with the property as predicate and the resource ID as the subject

Author:

mvo

Constructor Summary

Constructors

Constructor and Description
BridgeBase()

Method Summary

Modifier and Type	Method and Description
static void	add(Model model, Resource subject, URI property, Object object) Add a value to a property of a resource.
static boolean	containsGivenValue(Model model, Resource resource, URI propertyURI, Object value) Check if the resource identified by resourceID, has a property identidified by propertyURI which has the given value among its values.
static Object[]	getAllInstances(Model model, Class<?> javaClass) Get all instances of the class in the model.
static Set<Object>	getAllValues_asSet(Model model, Resource resource, URI propertyURI, Class<?> returnType) Return a Set with all x matching (resourceObject, propertyURI, x) in the given model.
static Object[]	getAllValues_Inverse(Model model, URI propertyURI, Node objectNode, Class<?> returnType) Get all resources having the given property and value.
static Object[]	getAllValues(Model model, Resource resource, URI propertyURI, Class<?> returnType) Get all values for the given resource and property.
static OOQueryResultTable	getSparqlSelect(Model model, Map<String,Class<?>> returnTypes, String sparqlSelectQuery) Query the model with a SPARQL query.
static Object	getValue(Model model, Resource resourceSubject, URI propertyURI, Class<?> returnType) Return the first x with matching statement (resourceObject, propertyURI, x) from the given model.
static boolean	removeAllValues(Model model, Resource r, URI p) Remove all values of a property from a resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

BridgeBase

public BridgeBase()

Method Detail

containsGivenValue

public static boolean containsGivenValue(Model model,
                                         Resource resource,
                                         URI propertyURI,
                                         Object value)
                                  throws ModelRuntimeException

Check if the resource identified by resourceID, has a property identidified by propertyURI which has the given value among its values.

Parameters:

model - - the underlying RDF2Go model

resource - - must be an URI or a BlankNode

propertyURI - - URI of the property

value - - look for this value of the property

Returns:

true if value is among values for the property

Throws:

Exception

ModelRuntimeException

getValue

public static Object getValue(Model model,
                              Resource resourceSubject,
                              URI propertyURI,
                              Class<?> returnType)
                       throws RDFDataException,
                              ModelRuntimeException

Return the first x with matching statement (resourceObject, propertyURI, x) from the given model. If severeal matching statements exist, only the first is returned.

Parameters:

model - - the underlying RDF2Go model

resourceSubject - - the URI or BlankNode of the resource

propertyURI - - the URI of the property

returnType - - return the value from the statement as the given Java Type

Returns:

the first x matching (resourceObject, propertyURI, x)

Throws:

RDFDataException - if more then one value was found

ModelRuntimeException

getAllValues_asSet

public static Set<Object> getAllValues_asSet(Model model,
                                             Resource resource,
                                             URI propertyURI,
                                             Class<?> returnType)

Return a Set with all x matching (resourceObject, propertyURI, x) in the given model.

Parameters:

model - - the underlying model

resource - - URI or BlankNode of the resource

propertyURI - - URI of the property

returnType - - return the found values as the given Java Type

Returns:

Set