Examples with Update org.openrdf.query.Update used on opensource projects

Example 36 with Update

use of org.openrdf.query.Update in project incubator-rya by apache.

the class RyaDirectExample method testAddAndDelete.

public static void testAddAndDelete(final SailRepositoryConnection conn) throws MalformedQueryException, RepositoryException, UpdateExecutionException, QueryEvaluationException, TupleQueryResultHandlerException, AccumuloException, AccumuloSecurityException, TableNotFoundException {
    // Add data
    String query = // 
    "INSERT DATA\n" + // 
    "{ GRAPH <http://updated/test> {\n" + // 
    "  <http://acme.com/people/Mike> " + // 
    "       <http://acme.com/actions/likes> \"A new book\" ;\n" + "       <http://acme.com/actions/likes> \"Avocados\" .\n" + "} }";
    log.info("Performing Query");
    Update update = conn.prepareUpdate(QueryLanguage.SPARQL, query);
    update.execute();
    query = "select ?p ?o { GRAPH <http://updated/test> {<http://acme.com/people/Mike> ?p ?o . }}";
    final CountingResultHandler resultHandler = new CountingResultHandler();
    TupleQuery tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    tupleQuery.evaluate(resultHandler);
    log.info("Result count : " + resultHandler.getCount());
    Validate.isTrue(resultHandler.getCount() == 2);
    resultHandler.resetCount();
    // Delete Data
    query = // 
    "DELETE DATA\n" + "{ GRAPH <http://updated/test> {\n" + "  <http://acme.com/people/Mike> <http://acme.com/actions/likes> \"A new book\" ;\n" + "   <http://acme.com/actions/likes> \"Avocados\" .\n" + "}}";
    update = conn.prepareUpdate(QueryLanguage.SPARQL, query);
    update.execute();
    query = "select ?p ?o { GRAPH <http://updated/test> {<http://acme.com/people/Mike> ?p ?o . }}";
    tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    tupleQuery.evaluate(resultHandler);
    log.info("Result count : " + resultHandler.getCount());
    Validate.isTrue(resultHandler.getCount() == 0);
}