The root page TUP:Contexts- could not be found in space Tupelo.
The Semantic Data Stream Manager uses the Tupelo concept of contexts as logical sets of data and metadata (see tupelo contexts). To enable the use of time annotations in a context you need to wrap a regular context with a streaming-capable context. Semantic Data Stream Manager provides to mechamism for the creation of these wrappers:
- Directly instantiating a context and context wrapper via java code.
- By specifying context configuration through xml files.
For the moment we will use xml files. The following code creates an in-memory context:
import org.tupeloproject.kernel.Context;
import edu.uiuc.ncsa.datastream.util.ContextParser;
import java.io.File;
// ...
Context context = ContextParser.parseContext(new File("contextDescription.xml"));