src/gromacs/analysisdata/dataproxy.h

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  35 /*! \internal \file
  36  * \brief
  37  * Declares gmx::AnalysisDataProxy.
  38  *
  39  * This header is only meant for internal use to implement
  40  * gmx::AbstractAnalysisData::setColumnModule().
  41  *
  42  * \author Teemu Murtola <teemu.murtola@gmail.com>
  43  * \ingroup module_analysisdata
  44  */
  45 #ifndef GMX_ANALYSISDATA_DATAPROXY_H
  46 #define GMX_ANALYSISDATA_DATAPROXY_H
  47
  48 #include "gromacs/analysisdata/abstractdata.h"
  49 #include "gromacs/analysisdata/datamodule.h"
  50
  51 namespace gmx
  52 {
  53
  54 /*! \internal
  55  * \brief
  56  * Internal implementation class used to implement column modules.
  57  *
  58  * This class serves as a proxy between AbstractAnalysisData and the attached
  59  * IAnalysisDataModule object.  For each notification that
  60  * AbstractAnalysisData sends, it maps it such that only the relevant columns
  61  * are visible to the IAnalysisDataModule.  Similarly, it implements
  62  * the frame access methods of AbstractAnalysisData such that only the relevant
  63  * columns are returned.
  64  *
  65  * \ingroup module_analysisdata
  66  */
  67 class AnalysisDataProxy : public AbstractAnalysisData,
  68                           public IAnalysisDataModule
  69 {
  70     public:
  71         /*! \brief
  72          * Creates a proxy object that only presents certain columns.
  73          *
  74          * \param[in] firstColumn  First column to present.
  75          * \param[in] columnSpan   Number of columns to present.
  76          * \param[in] data         Data object that should be wrapped.
  77          *
  78          * Does not throw.
  79          */
  80         AnalysisDataProxy(int firstColumn, int columnSpan,
  81                           AbstractAnalysisData *data);
  82
  83         int frameCount() const override;
  84
  85         int flags() const override;
  86
  87         void dataStarted(AbstractAnalysisData *data) override;
  88         bool parallelDataStarted(
  89             AbstractAnalysisData              *data,
  90             const AnalysisDataParallelOptions &options) override;
  91         void frameStarted(const AnalysisDataFrameHeader &frame) override;
  92         void pointsAdded(const AnalysisDataPointSetRef &points) override;
  93         void frameFinished(const AnalysisDataFrameHeader &header) override;
  94         void frameFinishedSerial(int frameIndex) override;
  95         void dataFinished() override;
  96
  97     private:
  98         AnalysisDataFrameRef tryGetDataFrameInternal(int index) const override;
  99         bool requestStorageInternal(int nframes) override;
 100
 101         AbstractAnalysisData   &source_;
 102         int                     firstColumn_;
 103         int                     columnSpan_;
 104         bool                    bParallel_;
 105
 106         // Copy and assign disallowed by base.
 107 };
 108
 109 } // namespace gmx
 110
 111 #endif