Examples of org.apache.cassandra.cql3.UntypedResultSet

org.apache.cassandra.cql3.UntypedResultSet
a utility for doing internal cql-based queries

    {
        for (int i = 0; i < 99; i++)
            HintedHandOffManager.instance.metrics.incrPastWindow(InetAddress.getLocalHost());
        HintedHandOffManager.instance.metrics.log();


        UntypedResultSet rows = processInternal("SELECT hints_dropped FROM system." + SystemTable.PEER_EVENTS_CF);
        Map<UUID, Integer> returned = rows.one().getMap("hints_dropped", UUIDType.instance, Int32Type.instance);
        assertEquals(Iterators.getLast(returned.values().iterator()).intValue(), 99);
    }

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        String password = credentials.get(PASSWORD_KEY);
        if (password == null)
            throw new AuthenticationException(String.format("Required key '%s' is missing", PASSWORD_KEY));


        UntypedResultSet result;
        try
        {
            ResultMessage.Rows rows = authenticateStatement.execute(consistencyForUser(username),
                                                                    new QueryState(new ClientState(true)),
                                                                    Lists.newArrayList(ByteBufferUtil.bytes(username)));
            result = new UntypedResultSet(rows.result);
        }
        catch (RequestValidationException e)
        {
            throw new AssertionError(e); // not supposed to happen
        }
        catch (RequestExecutionException e)
        {
            throw new AuthenticationException(e.toString());
        }


        if (result.isEmpty() || !BCrypt.checkpw(password, result.one().getString(SALTED_HASH)))
            throw new AuthenticationException("Username and/or password are incorrect");


        return new AuthenticatedUser(username);
    }

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     * @param username Username to query.
     * @return true is the user is a superuser, false if they aren't or don't exist at all.
     */
    public static boolean isSuperuser(String username)
    {
        UntypedResultSet result = selectUser(username);
        return !result.isEmpty() && result.one().getBoolean("super");
    }

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        try
        {
            ResultMessage.Rows rows = selectUserStatement.execute(consistencyForUser(username),
                                                                  new QueryState(new ClientState(true)),
                                                                  Lists.newArrayList(ByteBufferUtil.bytes(username)));
            return new UntypedResultSet(rows.result);
        }
        catch (RequestValidationException e)
        {
            throw new AssertionError(e); // not supposed to happen
        }

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        int throttleInKB = DatabaseDescriptor.getBatchlogReplayThrottleInKB() / StorageService.instance.getTokenMetadata().getAllEndpoints().size();
        RateLimiter rateLimiter = RateLimiter.create(throttleInKB == 0 ? Double.MAX_VALUE : throttleInKB * 1024);


        try
        {
            UntypedResultSet page = process("SELECT id, data, written_at FROM %s.%s LIMIT %d",
                                            Keyspace.SYSTEM_KS,
                                            SystemKeyspace.BATCHLOG_CF,
                                            PAGE_SIZE);


            while (!page.isEmpty())
            {
                UUID id = processBatchlogPage(page, rateLimiter);


                if (page.size() < PAGE_SIZE)
                    break; // we've exhausted the batchlog, next query would be empty.


                page = process("SELECT id, data, written_at FROM %s.%s WHERE token(id) > token(%s) LIMIT %d",
                               Keyspace.SYSTEM_KS,
                               SystemKeyspace.BATCHLOG_CF,

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     * task ID of the compaction they were participating in.
     */
    public static Map<Pair<String, String>, Map<Integer, UUID>> getUnfinishedCompactions()
    {
        String req = "SELECT * FROM system.%s";
        UntypedResultSet resultSet = processInternal(String.format(req, COMPACTION_LOG));


        Map<Pair<String, String>, Map<Integer, UUID>> unfinishedCompactions = new HashMap<>();
        for (UntypedResultSet.Row row : resultSet)
        {
            String keyspace = row.getString("keyspace_name");

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        processInternal(String.format(req, COMPACTION_HISTORY_CF, UUIDGen.getTimeUUID().toString(), ksname, cfname, compactedAt, bytesIn, bytesOut, FBUtilities.toString(rowsMerged)));
    }


    public static TabularData getCompactionHistory() throws OpenDataException
    {
        UntypedResultSet queryResultSet = processInternal("SELECT * from system.compaction_history");
        return CompactionHistoryTabularData.from(queryResultSet);
    }

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    }


    public static Map<UUID, Pair<ReplayPosition, Long>> getTruncationRecords()
    {
        String req = "SELECT truncated_at FROM system.%s WHERE key = '%s'";
        UntypedResultSet rows = processInternal(String.format(req, LOCAL_CF, LOCAL_KEY));
        if (rows.isEmpty())
            return Collections.emptyMap();


        UntypedResultSet.Row row = rows.one();
        Map<UUID, ByteBuffer> rawMap = row.getMap("truncated_at", UUIDType.instance, BytesType.instance);
        if (rawMap == null)
            return Collections.emptyMap();


        Map<UUID, Pair<ReplayPosition, Long>> positions = new HashMap<UUID, Pair<ReplayPosition, Long>>();

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    }


    public static InetAddress getPreferredIP(InetAddress ep)
    {
        String req = "SELECT preferred_ip FROM system.%s WHERE peer='%s'";
        UntypedResultSet result = processInternal(String.format(req, PEERS_CF, ep.getHostAddress()));
        if (!result.isEmpty() && result.one().has("preferred_ip"))
            return result.one().getInetAddress("preferred_ip");
        return null;
    }

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            throw ex;
        }
        ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(LOCAL_CF);


        String req = "SELECT cluster_name FROM system.%s WHERE key='%s'";
        UntypedResultSet result = processInternal(String.format(req, LOCAL_CF, LOCAL_KEY));


        if (result.isEmpty() || !result.one().has("cluster_name"))
        {
            // this is a brand new node
            if (!cfs.getSSTables().isEmpty())
                throw new ConfigurationException("Found system keyspace files, but they couldn't be loaded!");


            // no system files.  this is a new node.
            req = "INSERT INTO system.%s (key, cluster_name) VALUES ('%s', '%s')";
            processInternal(String.format(req, LOCAL_CF, LOCAL_KEY, DatabaseDescriptor.getClusterName()));
            return;
        }


        String savedClusterName = result.one().getString("cluster_name");
        if (!DatabaseDescriptor.getClusterName().equals(savedClusterName))
            throw new ConfigurationException("Saved cluster name " + savedClusterName + " != configured name " + DatabaseDescriptor.getClusterName());
    }

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org.antlr.runtime.CommonTokenStream

org.antlr.runtime.Token

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