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37 * Declares gmx::AnalysisDataModuleInterface and related convenience classes.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_analysisdata
43 #ifndef GMX_ANALYSISDATA_DATAMODULE_H
44 #define GMX_ANALYSISDATA_DATAMODULE_H
49 class AbstractAnalysisData;
50 class AnalysisDataFrameHeader;
51 class AnalysisDataParallelOptions;
52 class AnalysisDataPointSetRef;
55 * Interface for a module that gets notified whenever data is added.
57 * The interface provides one method (flags()) that describes features of
58 * data objects the module supports. Only most common features are included
59 * in the flags; custom checks can be implemented in the dataStarted() and/or
60 * parallelDataStarted() methods (see below).
61 * All other methods in the interface are callbacks that are called by the
62 * data object to which the module is attached to describe the data.
64 * The modules can operate in two modes: serial or parallel.
65 * In serial mode, the frames are presented to the module always in the order
66 * of increasing indices, even if they become ready in a different order in the
68 * In parallel mode, the frames are presented in the order that they become
69 * available in the input data, which may not be sequential. This mode allows
70 * the input data to optimize its behavior if it does not need to store and
72 * If the input data supports parallel mode, it calls parallelDataStarted().
73 * If the module returns true from this method, then it will process the frames
74 * in the parallel mode. If the module returns false, it will get the frames
76 * If the input data does not support parallel mode, it calls dataStarted().
78 * Concrete modules typically do not directly derive from this interface, but
79 * from either AnalysisDataModuleSerial or AnalysisDataModuleParallel.
80 * Both these classes implement one of dataStarted()/parallelDataStarted() by
81 * forwarding the calls to the other method of this pair. This allows the
82 * module to only implement the initialization once, without needing to worry
83 * how to correctly handle both cases.
85 * Currently, if the module throws an exception, it requires the analysis tool
86 * to terminate, since AbstractAnalysisData will be left in a state where it
87 * is not possible to continue processing. See a related todo item in
88 * AbstractAnalysisData.
91 * \ingroup module_analysisdata
93 class AnalysisDataModuleInterface
97 * Possible flags for flags().
101 //! The module can process multipoint data.
102 efAllowMultipoint = 1<<0,
103 //! The module does not make sense for non-multipoint data.
104 efOnlyMultipoint = 1<<1,
105 //! The module can process data with more than one column.
106 efAllowMulticolumn = 1<<2,
107 //! The module can process data with missing points.
108 efAllowMissing = 1<<3,
109 //! The module can process data with multiple data sets.
110 efAllowMultipleDataSets = 1<<4
113 virtual ~AnalysisDataModuleInterface() {};
116 * Returns properties supported by the module.
118 * The return value of this method should not change after the module
119 * has been added to a data (this responsibility can, and in most cases
120 * must, be delegated to the user of the module).
122 * The purpose of this method is to remove the need for common checks
123 * for data compatibility in the classes that implement the interface.
124 * Instead, AbstractAnalysisData performs these checks based on the
129 virtual int flags() const = 0;
132 * Called (once) when the data has been set up properly.
134 * \param[in] data Data object to which the module is added.
135 * \throws APIError if the provided data is not compatible.
136 * \throws unspecified Can throw any exception required by the
137 * implementing class to report errors.
139 * When the data is ready, either this method or parallelDataStarted()
140 * is called, depending on the nature of the input data. If this
141 * method is called, the input data will always present the frames in
144 * The data to which the module is attached is passed as an argument
145 * to provide access to properties of the data for initialization
146 * and/or validation. The module can also call
147 * AbstractAnalysisData::requestStorage() if needed.
149 * This is the only place where the module gets access to the data;
150 * if properties of the data are required later, the module should
151 * store them internally. It is guaranteed that the data properties
152 * (column count, whether it's multipoint) do not change once this
153 * method has been called.
155 * Notice that \p data will be a proxy object if the module is added as
156 * a column module, not the data object for which
157 * AbstractAnalysisData::addColumnModule() was called.
159 virtual void dataStarted(AbstractAnalysisData *data) = 0;
161 * Called (once) for parallel data when the data has been set up.
163 * \param[in] data Data object to which the module is added.
164 * \param[in] options Parallelization properties of the input data.
165 * \returns true if the module can process the input in
166 * non-sequential order.
167 * \throws APIError if the provided data is not compatible.
168 * \throws unspecified Can throw any exception required by the
169 * implementing class to report errors.
171 * This method is called instead of dataStarted() if the input data has
172 * the capability to present data in non-sequential order.
173 * If the method returns true, then the module accepts this and frame
174 * notification methods may be called in that non-sequential order.
175 * If the method returns false, then the frame notification methods are
176 * called in sequential order, as if dataStarted() had been called.
178 * See dataStarted() for general information on initializing the data.
179 * That applies to this method as well, with the exception that calling
180 * AbstractAnalysisData::requestStorage() is currently not very well
181 * supported (or rather, accessing the requested storage doesn't work).
183 virtual bool parallelDataStarted(
184 AbstractAnalysisData *data,
185 const AnalysisDataParallelOptions &options) = 0;
187 * Called at the start of each data frame.
189 * \param[in] frame Header information for the frame that is starting.
190 * \throws unspecified Can throw any exception required by the
191 * implementing class to report errors.
193 virtual void frameStarted(const AnalysisDataFrameHeader &frame) = 0;
195 * Called one or more times during each data frame.
197 * \param[in] points Set of points added (also provides access to
199 * \throws APIError if the provided data is not compatible.
200 * \throws unspecified Can throw any exception required by the
201 * implementing class to report errors.
203 * Can be called once or multiple times for a frame. For all data
204 * objects currently implemented in the library (and all objects that
205 * will use AnalysisDataStorage for internal implementation), it is
206 * called exactly once for each frame if the data is not multipoint,
207 * but currently this restriction is not enforced.
209 virtual void pointsAdded(const AnalysisDataPointSetRef &points) = 0;
211 * Called when a data frame is finished.
213 * \param[in] header Header information for the frame that is ending.
214 * \throws unspecified Can throw any exception required by the
215 * implementing class to report errors.
217 virtual void frameFinished(const AnalysisDataFrameHeader &header) = 0;
219 * Called (once) when no more data is available.
221 * \throws unspecified Can throw any exception required by the
222 * implementing class to report errors.
224 virtual void dataFinished() = 0;
228 * Convenience base class for serial analysis data modules.
230 * Implements the parallelDataStarted() method such that initialization is
231 * always forwarded to dataStarted(), and the module always behaves as serial
232 * (parallelDataStarted() returns false).
235 * \ingroup module_analysisdata
237 class AnalysisDataModuleSerial : public AnalysisDataModuleInterface
240 virtual ~AnalysisDataModuleSerial() {}
242 virtual int flags() const = 0;
244 virtual void dataStarted(AbstractAnalysisData *data) = 0;
245 virtual void frameStarted(const AnalysisDataFrameHeader &frame) = 0;
246 virtual void pointsAdded(const AnalysisDataPointSetRef &points) = 0;
247 virtual void frameFinished(const AnalysisDataFrameHeader &header) = 0;
248 virtual void dataFinished() = 0;
251 virtual bool parallelDataStarted(
252 AbstractAnalysisData *data,
253 const AnalysisDataParallelOptions &options);
257 * Convenience base class for parallel analysis data modules.
259 * Implements the dataStarted() method such that initialization is always done
260 * in parallelDataStarted(). dataStarted() calls are forwarded to
261 * parallelDataStarted() using a dummy serial AnalysisDataParallelOptions.
264 * \ingroup module_analysisdata
266 class AnalysisDataModuleParallel : public AnalysisDataModuleInterface
269 virtual ~AnalysisDataModuleParallel() {}
271 virtual int flags() const = 0;
273 virtual bool parallelDataStarted(
274 AbstractAnalysisData *data,
275 const AnalysisDataParallelOptions &options) = 0;
276 virtual void frameStarted(const AnalysisDataFrameHeader &frame) = 0;
277 virtual void pointsAdded(const AnalysisDataPointSetRef &points) = 0;
278 virtual void frameFinished(const AnalysisDataFrameHeader &header) = 0;
279 virtual void dataFinished() = 0;
282 virtual void dataStarted(AbstractAnalysisData *data);