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StreamingFeatures.h
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 3 of the License, or
5  * (at your option) any later version.
6  *
7  * Written (W) 2011 Shashwat Lal Das
8  * Written (W) 2012 Heiko Strathmann
9  * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
10  */
11 #ifndef _STREAMING_FEATURES__H__
12 #define _STREAMING_FEATURES__H__
13 
14 #include <shogun/lib/config.h>
15 
16 #include <shogun/lib/common.h>
19 
20 namespace shogun
21 {
73 {
74 
75 public:
76 
82 
86  virtual ~CStreamingFeatures();
87 
94  void set_read_functions();
95 
104  virtual void set_vector_reader()=0;
105 
115  virtual void set_vector_and_label_reader()=0;
116 
121  virtual void start_parser()=0;
122 
126  virtual void end_parser()=0;
127 
135  virtual float64_t get_label()=0;
136 
142  virtual bool get_next_example()=0;
143 
149  virtual void release_example()=0;
150 
156  virtual int32_t get_num_features()=0;
157 
163  virtual bool get_has_labels();
164 
175  virtual bool is_seekable();
176 
180  virtual void reset_stream();
181 
190  virtual CFeatures* get_streamed_features(index_t num_elements)
191  {
192  SG_ERROR("%s::get_streamed_features() is not yet implemented!\n",
193  get_name());
194  return NULL;
195  }
196 
197 protected:
198 
201 
204 
206  bool seekable;
207 
208 };
209 }
210 #endif // _STREAMING_FEATURES__H__

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