org.aksw.jena_sparql_api.mapper.model

Interface RdfMapper

All Known Subinterfaces:

RdfMapperProperty

All Known Implementing Classes:

RdfMapperPropertyBase, RdfMapperPropertyMulti, RdfMapperPropertySingle

public interface RdfMapper

RdfPopulators map bean properties to triples and vice versa. In general RdfPopulators can implement arbitrary mappings between bean properties and RDF triples, i.e. beanProperties:triples -- 1:n, m:n, m:1 Note that an RDF populator only populates the *immediate* properties. Scheduling Lazy / Eager fetching is NOT up to the populator.

Author:

raven

Method Summary

Modifier and Type	Method and Description
void	exposeFragment(ResourceFragment out, org.apache.jena.rdf.model.Resource priorState, Object entity)
void	exposeShape(ResourceShapeBuilder shapeBuilder) Expose SPARQL patterns that identify the set of triples that are needed to populate the *immediate* values of the affected entity properties.
default String	getName() It may be useful giving property mappers names.
Set<String>	getPropertyNames() Return the set of entity properties which are affected by this populator.
void	populate(EntityFragment out, org.apache.jena.rdf.model.Resource shape, Object entity)
PathFragment	resolve(String propertyName) Return a relation that addresses the attribute on in the RDF

Method Detail

getName

default String getName()

It may be useful giving property mappers names. For mappers that map to a single java property, the mapper name can be that of the property. But if a mapper writes to multiple java properties, a custom name could be given. A default implementation could return a string from joining the ordered affected property names alphabetically.

getPropertyNames

Set<String> getPropertyNames()

Return the set of entity properties which are affected by this populator. For instance, an RDF wktLiteral may map to two properties 'lat' and 'long'

Returns:

exposeShape

void exposeShape(ResourceShapeBuilder shapeBuilder)

Expose SPARQL patterns that identify the set of triples that are needed to populate the *immediate* values of the affected entity properties.

Parameters:

shapeBuilder -

exposeFragment

void exposeFragment(ResourceFragment out,
                    org.apache.jena.rdf.model.Resource priorState,
                    Object entity)

populate

void populate(EntityFragment out,
              org.apache.jena.rdf.model.Resource shape,
              Object entity)

resolve

PathFragment resolve(String propertyName)

Return a relation that addresses the attribute on in the RDF

Returns: