Package org.phoenixdb.io.network

Examples of org.phoenixdb.io.network.Message

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     * @throws IOException
     */
    public Result prepare(String queryString) throws Error, IOException
    {
        log.fine(String.format("Preparing query '%s'", queryString));
        Message msg = new Message.Query(0, queryString, afl, "", false);
        net.write(msg);
        msg = net.read();

        switch (msg.getHeader().messageType)
        {
            case Message.mtQueryResult:
                log.fine("Got result from server");
                Result res = new Result((QueryResult) msg, this);
                _queryId = res.getQueryId();
                return res;

            case Message.mtError:
                log.fine("Got error message from server");
                throw new Error((Message.Error) msg);

            default:
                log.severe("Got unhandled network message during execution");
                throw new Error(String.format("Can not handle network message '%s'",
                        msg.getHeader().messageType));
        }
    }
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        {
            throw new Error("Query not prepared");
        }
       
        log.fine(String.format("Executing query %d", _queryId));
        Message msg = new Message.Query(_queryId, "", afl, "", true);
        net.write(msg);
        msg = net.read();

        switch (msg.getHeader().messageType)
        {
            case Message.mtQueryResult:
                log.fine("Got result from server");
                Result res = new Result((QueryResult) msg, this);
                _activeQueries.add(res.getQueryId());
                if (res.isSelective())
                    return new Array(res.getQueryId(), res.getSchema(), net);
                else
                    return null;

            case Message.mtError:
                log.fine("Got error message from server");
                throw new Error((Message.Error) msg);

            default:
                log.severe("Got unhandled network message during execution");
                throw new Error(String.format("Can not handle network message '%s'",
                        msg.getHeader().messageType));
        }
    }
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        _activeQueries.clear();
        for (long queryId: activeQueries)
        {
            log.fine(String.format("Committing query %d", queryId));
            net.write(new Message.CompleteQuery(queryId));
            Message msg = net.read();

            switch (msg.getHeader().messageType)
            {
                case Message.mtError:
                    Message.Error err = (Message.Error) msg;
                    if (err.getRecord().getLongErrorCode() != 0)
                    {
                        log.fine("Got error message from server");
                        throw new Error((Message.Error) msg);
                    }
                    log.fine("Query completed successfully");
                    break;

                default:
                    log.severe("Got unhandled network message during query completing");
                    throw new Error(String.format("Can not handle network message '%s'",
                            msg.getHeader().messageType));
            }
        }
    }
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        _activeQueries.clear();
        for (long queryId: activeQueries)
        {
            log.fine(String.format("Rolling back query %d", queryId));
            net.write(new Message.AbortQuery(queryId));
            Message msg = net.read();

            switch (msg.getHeader().messageType)
            {
                case Message.mtError:
                    Message.Error err = (Message.Error) msg;
                    if (err.getRecord().getLongErrorCode() != 0)
                    {
                        log.fine("Got error message from server");
                        throw new Error((Message.Error) msg);
                    }
                    log.fine("Query aborted successfully");
                    break;

                default:
                    log.severe("Got unhandled network message during query aborting");
                    throw new Error(String.format("Can not handle network message '%s'",
                            msg.getHeader().messageType));
            }
        }
    }
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    public void fetch() throws IOException, Error
    {
        log.fine(String.format("Fetching chunks"));
        for (Schema.Attribute att: schema.getAttributes())
        {
            Message msg = new Message.Fetch(queryId, att.getId(), schema.getName());
            net.write(msg);
            msg = net.read();
            if (msg instanceof Message.Error) {
                throw new Error((Message.Error) msg);
            }
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Related Classes of org.phoenixdb.io.network.Message

  • org.phoenixdb.client.Array
  • org.phoenixdb.client.Connection
  • java.io.IOException
  • java.nio.ByteBuffer
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