rdf4j-beans

Java beans IO library for RDF4J.

usage

Add the rdf4j-beans dependency in your POM:

<dependency>
    <groupId>com.github.kburger</groupId>
    <artifactId>rdf4j-beans</artifactId>
    <version>0.3.0</version>
</dependency>

Annotate your beans:

@Type("http://example.com/Type")
public class MyBean {
    @Predicate(value = "http://purl.org/dc/terms/title", isLiteral = true)
    private String title;
    
    public MyBean(String title) {
        this.title = title;
    }
    
    public String getTitle() {
        return title;
    }
}

Invoke the mapper:

BeanMapper mapper = new BeanMapper();
mapper.write(new OutputStreamWriter(System.out), new MyBean("example"), "http://example.com/subject", RDFFormat.TURTLE);

Or read from source:

@prefix ex: <http://example.com/> .
@prefix dc: <http://purl.org/dc/terms> .

ex:subject a ex:Type ;
    dc:title "Hello world!" .

MyBean bean = mapper.read(new StringReader(content), MyBean.class, "http://example.com/subject", RDFFormat.TURTLE);
assert bean.getTitle().equals("Hello world!");

changelog

0.3.0

• Support for inherited properties.

0.2.0

• Support for bean deserialization.
• Fix for handling property null values.

0.1.0

• Initial release.
• Support for bean serialization.