Package org.h2.value

Examples of org.h2.value.Transfer

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    }

    private void setAutoCommitSend(boolean autoCommit) {
        if (clientVersion >= Constants.TCP_PROTOCOL_VERSION_8) {
            for (int i = 0, count = 0; i < transferList.size(); i++) {
                Transfer transfer = transferList.get(i);
                try {
                    traceOperation("SESSION_SET_AUTOCOMMIT", autoCommit ? 1 : 0);
                    transfer.writeInt(SessionRemote.SESSION_SET_AUTOCOMMIT).writeBoolean(autoCommit);
                    done(transfer);
                } catch (IOException e) {
                    removeServer(e, i--, ++count);
                }
            }
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        if (autoCommit && cluster) {
            // server side auto commit is off because of race conditions
            // (update set id=1 where id=0, but update set id=2 where id=0 is
            // faster)
            for (int i = 0, count = 0; i < transferList.size(); i++) {
                Transfer transfer = transferList.get(i);
                try {
                    traceOperation("COMMAND_COMMIT", 0);
                    transfer.writeInt(SessionRemote.COMMAND_COMMIT);
                    done(transfer);
                } catch (IOException e) {
                    removeServer(e, i--, ++count);
                }
            }
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        boolean switchOffCluster = false;
        try {
            for (int i = 0; i < len; i++) {
                String s = servers[i];
                try {
                    Transfer trans = initTransfer(ci, databaseName, s);
                    transferList.add(trans);
                } catch (IOException e) {
                    if (len == 1) {
                        throw DbException.get(ErrorCode.CONNECTION_BROKEN_1, e, e + ": " + s);
                    }
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        return null;
    }

    public synchronized int readLob(long lobId, long offset, byte[] buff, int off, int length) {
        for (int i = 0, count = 0; i < transferList.size(); i++) {
            Transfer transfer = transferList.get(i);
            try {
                traceOperation("LOB_READ", (int) lobId);
                transfer.writeInt(SessionRemote.LOB_READ);
                transfer.writeLong(lobId);
                transfer.writeLong(offset);
                transfer.writeInt(length);
                done(transfer);
                length = transfer.readInt();
                if (length <= 0) {
                    return length;
                }
                transfer.readBytes(buff, off, length);
                return length;
            } catch (IOException e) {
                removeServer(e, i--, ++count);
            }
        }
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        }
        boolean running = false;
        String id = prop.getProperty("id");
        try {
            Socket socket = NetUtils.createSocket(server, Constants.DEFAULT_TCP_PORT, false);
            Transfer transfer = new Transfer(null);
            transfer.setSocket(socket);
            transfer.init();
            transfer.writeInt(Constants.TCP_PROTOCOL_VERSION_6);
            transfer.writeInt(Constants.TCP_PROTOCOL_VERSION_11);
            transfer.writeString(null);
            transfer.writeString(null);
            transfer.writeString(id);
            transfer.writeInt(SessionRemote.SESSION_CHECK_KEY);
            transfer.flush();
            int state = transfer.readInt();
            if (state == SessionRemote.STATUS_OK) {
                running = true;
            }
            transfer.close();
            socket.close();
        } catch (IOException e) {
            return;
        }
        if (running) {
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    private String sessionId;

    TcpServerThread(Socket socket, TcpServer server, int id) {
        this.server = server;
        this.threadId = id;
        transfer = new Transfer(null);
        transfer.setSocket(socket);
    }
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    private void prepare(SessionRemote s, boolean createParams) {
        id = s.getNextId();
        paramCount = 0;
        for (int i = 0, count = 0; i < transferList.size(); i++) {
            try {
                Transfer transfer = transferList.get(i);
                if (createParams) {
                    s.traceOperation("SESSION_PREPARE_READ_PARAMS", id);
                    transfer.writeInt(SessionRemote.SESSION_PREPARE_READ_PARAMS).writeInt(id).writeString(sql);
                } else {
                    s.traceOperation("SESSION_PREPARE", id);
                    transfer.writeInt(SessionRemote.SESSION_PREPARE).writeInt(id).writeString(sql);
                }
                s.done(transfer);
                isQuery = transfer.readBoolean();
                readonly = transfer.readBoolean();
                paramCount = transfer.readInt();
                if (createParams) {
                    parameters.clear();
                    for (int j = 0; j < paramCount; j++) {
                        ParameterRemote p = new ParameterRemote(j);
                        p.readMetaData(transfer);
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            }
            int objectId = session.getNextId();
            ResultRemote result = null;
            for (int i = 0, count = 0; i < transferList.size(); i++) {
                prepareIfRequired();
                Transfer transfer = transferList.get(i);
                try {
                    session.traceOperation("COMMAND_GET_META_DATA", id);
                    transfer.writeInt(SessionRemote.COMMAND_GET_META_DATA).writeInt(id).writeInt(objectId);
                    session.done(transfer);
                    int columnCount = transfer.readInt();
                    result = new ResultRemote(session, transfer, objectId, columnCount, Integer.MAX_VALUE);
                    break;
                } catch (IOException e) {
                    session.removeServer(e, i--, ++count);
                }
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        synchronized (session) {
            int objectId = session.getNextId();
            ResultRemote result = null;
            for (int i = 0, count = 0; i < transferList.size(); i++) {
                prepareIfRequired();
                Transfer transfer = transferList.get(i);
                try {
                    session.traceOperation("COMMAND_EXECUTE_QUERY", id);
                    transfer.writeInt(SessionRemote.COMMAND_EXECUTE_QUERY).writeInt(id).writeInt(objectId).writeInt(
                            maxRows);
                    int fetch;
                    if (session.isClustered() || scrollable) {
                        fetch = Integer.MAX_VALUE;
                    } else {
                        fetch = fetchSize;
                    }
                    transfer.writeInt(fetch);
                    sendParameters(transfer);
                    session.done(transfer);
                    int columnCount = transfer.readInt();
                    if (result != null) {
                        result.close();
                        result = null;
                    }
                    result = new ResultRemote(session, transfer, objectId, columnCount, fetch);
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        synchronized (session) {
            int updateCount = 0;
            boolean autoCommit = false;
            for (int i = 0, count = 0; i < transferList.size(); i++) {
                prepareIfRequired();
                Transfer transfer = transferList.get(i);
                try {
                    session.traceOperation("COMMAND_EXECUTE_UPDATE", id);
                    transfer.writeInt(SessionRemote.COMMAND_EXECUTE_UPDATE).writeInt(id);
                    sendParameters(transfer);
                    session.done(transfer);
                    updateCount = transfer.readInt();
                    autoCommit = transfer.readBoolean();
                } catch (IOException e) {
                    session.removeServer(e, i--, ++count);
                }
            }
            session.setAutoCommitFromServer(autoCommit);
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