User_Guide

User Guide

Choosing the right binding

The StorageLayerFactory uses the ServiceLoader [1] strategy for detecting an available binding module. So that means if you want to use Cassandra just put in your classpath

• jena-nosql-framework-XYZ.jar
• jena-nosql-binding-cassandra--XYZ.jar

Where XYZ is the version.

NOTE: At the moment It's up to you to define all required jars in the classpath; later, there will be a Maven helper for doing that job; it will create a specific distribution for each kind of supported storage.

Configuration

Loading data

From a file

    final String datafileURI = new File("datafile path").toURI().toString();

    Dataset dataset;    
    StorageLayerFactory factory;
    try {
        // 1. Load the appropriate factory
        factory = StorageLayerFactory.getFactory();

        // 2. Create a dataset
        dataset = DatasetFactory.create(factory.getDatasetGraph());
        
        // 3. Load and create a model
        final Model model = dataset
                .getDefaultModel()
                .read(datafileURI, "http://example.org", "TTL");
        
        // 4. Do whatever you want with the model...
    } finally {
        // 5. Make sure resources are released on exit 
        dataset.close();
        factory.getClientShutdownHook().close();
    }          

[1] http://docs.oracle.com/javase/tutorial/ext/basics/spi.html