Java Code Examples for org.openrdf.repository.RepositoryConnection#getContextIDs()

The following examples show how to use org.openrdf.repository.RepositoryConnection#getContextIDs() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: TripleStoreBlazegraph.java From powsybl-core with Mozilla Public License 2.0

6 votes

@Override
public void write(DataSource ds) {
    RepositoryConnection conn = null;
    try {
        conn = repo.getConnection();
        RepositoryResult<Resource> contexts = conn.getContextIDs();
        while (contexts.hasNext()) {
            Resource context = contexts.next();
            write(ds, conn, context);
        }
    } catch (RepositoryException x) {
        throw new TripleStoreException(String.format("Writing on %s", ds), x);
    } finally {
        closeConnection(conn, "Writing on " + ds);
    }
}

Example 2

Source File: TripleStoreBlazegraph.java From powsybl-core with Mozilla Public License 2.0

6 votes

@Override
public void write(DataSource ds, String contextName) {
    RepositoryConnection conn = null;
    try {
        conn = repo.getConnection();
        RepositoryResult<Resource> contexts = conn.getContextIDs();
        while (contexts.hasNext()) {
            Resource context = contexts.next();
            if (context.stringValue().equals(contextName)) {
                write(ds, conn, context);
            }
        }
    } catch (RepositoryException x) {
        throw new TripleStoreException(String.format("Writing on %s", ds), x);
    } finally {
        closeConnection(conn, "Writing on " + ds);
    }
}

Example 3

Source File: TripleStoreBlazegraph.java From powsybl-core with Mozilla Public License 2.0

6 votes

@Override
public Set<String> contextNames() {
    HashSet<String> names = new HashSet<>();
    RepositoryConnection conn = null;
    try {
        conn = repo.getConnection();
        RepositoryResult<Resource> rs = conn.getContextIDs();
        while (rs.hasNext()) {
            names.add(rs.next().stringValue());
        }
        return names;
    } catch (RepositoryException x) {
        LOG.error("getting context names : {}", x.getMessage());
    } finally {
        closeConnection(conn, "Getting context names");
    }
    return names;
}

Example 4

Source File: TripleStoreBlazegraph.java From powsybl-core with Mozilla Public License 2.0

5 votes

@Override
public void print(PrintStream out) {
    out.println("TripleStore based on Blazegraph");
    RepositoryConnection conn;
    try {
        conn = repo.getConnection();
        try {
            RepositoryResult<Resource> ctxs = conn.getContextIDs();
            while (ctxs.hasNext()) {
                Resource ctx = ctxs.next();
                int size = statementsCount(conn, ctx);
                out.println("    " + ctx + " : " + size);
                if (PRINT_ALL_STATEMENTS) {
                    RepositoryResult<Statement> statements = conn.getStatements(null, null, null, true, ctx);
                    while (statements.hasNext()) {
                        Statement statement = statements.next();
                        out.println("        " + statement.getSubject() + " " + statement.getPredicate() + " "
                            + statement.getObject());
                    }
                }
            }
        } finally {
            closeConnection(conn, "Printing");
        }
    } catch (RepositoryException e) {
        LOG.error(e.getMessage());
    }
}

Example 5

Source File: ContextsHandler.java From cumulusrdf with Apache License 2.0

5 votes

@Override
public ModelAndView serve(final Repository repository, final HttpServletRequest request, final HttpServletResponse response)
		throws Exception {
	Map<String, Object> model = new HashMap<String, Object>();
	TupleQueryResultWriterFactory factory = ProtocolUtil.getAcceptableService(request, response,
			TupleQueryResultWriterRegistry.getInstance());

	if (METHOD_GET.equals(request.getMethod())) {
		List<String> columnNames = Arrays.asList("contextID");
		List<BindingSet> contexts = new ArrayList<BindingSet>();
		RepositoryConnection repositoryCon = repository.getConnection();
		synchronized (repositoryCon) {
			try {
				CloseableIteration<? extends Resource, RepositoryException> contextIter = repositoryCon.getContextIDs();

				try {
					while (contextIter.hasNext()) {
						BindingSet bindingSet = new ListBindingSet(columnNames, contextIter.next());
						contexts.add(bindingSet);
					}
				} finally {
					contextIter.close();
				}
			} catch (RepositoryException e) {
				throw new ServerHTTPException("Repository error: " + e.getMessage(), e);
			}
		}
		model.put(QueryResultView.QUERY_RESULT_KEY, new TupleQueryResultImpl(columnNames, contexts));
	}

	model.put(QueryResultView.FILENAME_HINT_KEY, "contexts");
	model.put(QueryResultView.FACTORY_KEY, factory);
	model.put(QueryResultView.HEADERS_ONLY, METHOD_HEAD.equals(request.getMethod()));
	return new ModelAndView(TupleQueryResultView.getInstance(), model);
}