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83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
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/***************************************************//**
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* @file Transaction.h
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* @date February 2009
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* @author Ocean Optics, Inc.
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*
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* The Transaction class is simply a wrapper
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* around one or more Transfer objects that must
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* be executed in a particular order. This is
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* provided for convenience. Some transfers
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* to Ocean Optics spectrometers put the spectrometer
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* into a particular state where it expects another
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* action to be taken, and Transaction objects can
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* be used to ensure that all expected operations occur.
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*
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* Some actions, like requesting a spectrum, do not
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* necessarily require that the next action be a read
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* operation. Thus, some Transfers that appear to follow
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* a causal chain may not in fact make good Transactions.
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* In this case, reading the status of the device until
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* it reports data ready is a common operation before
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* reading the spectrum.
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*
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* Note that the Transaction class has no notion of buses
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* or protocols, and this is by design.
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*
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* LICENSE:
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*
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* SeaBreeze Copyright (C) 2014, Ocean Optics Inc
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*******************************************************/
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#ifndef SEABREEZE_TRANSACTION_H
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#define SEABREEZE_TRANSACTION_H
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#include <vector>
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#include "common/protocols/Exchange.h"
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#include "common/protocols/Transfer.h"
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#include "common/buses/TransferHelper.h"
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#include "common/protocols/ProtocolHint.h"
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#include "common/Data.h"
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namespace seabreeze {
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class Transaction : public Exchange {
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public:
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Transaction();
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virtual ~Transaction();
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void addTransfer(Transfer *xfer);
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/* Inherited from Exchange */
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virtual Data *transfer(TransferHelper *helper) throw (ProtocolException);
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protected:
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std::vector<Transfer *> transfers;
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private:
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void updateHints();
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};
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}
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#endif /* SEABREEZE_TRANSACTION_H */
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