summaryrefslogtreecommitdiff
path: root/sql/item_geofunc.h
blob: ee61f921adbf458106fddcd6105392a176d8f83d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
#ifndef ITEM_GEOFUNC_INCLUDED
#define ITEM_GEOFUNC_INCLUDED

/* Copyright (c) 2000, 2010 Oracle and/or its affiliates.
   Copyright (C) 2011 Monty Program Ab.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */


/* This file defines all spatial functions */

#ifdef HAVE_SPATIAL

#ifdef USE_PRAGMA_INTERFACE
#pragma interface			/* gcc class implementation */
#endif

#include "gcalc_slicescan.h"
#include "gcalc_tools.h"

class Item_geometry_func: public Item_str_func
{
public:
  Item_geometry_func() :Item_str_func() {}
  Item_geometry_func(Item *a) :Item_str_func(a) {}
  Item_geometry_func(Item *a,Item *b) :Item_str_func(a,b) {}
  Item_geometry_func(Item *a,Item *b,Item *c) :Item_str_func(a,b,c) {}
  Item_geometry_func(List<Item> &list) :Item_str_func(list) {}
  void fix_length_and_dec();
  enum_field_types field_type() const  { return MYSQL_TYPE_GEOMETRY; }
  Field *tmp_table_field(TABLE *t_arg);
  bool is_null() { (void) val_int(); return null_value; }
};

class Item_func_geometry_from_text: public Item_geometry_func
{
public:
  Item_func_geometry_from_text(Item *a) :Item_geometry_func(a) {}
  Item_func_geometry_from_text(Item *a, Item *srid) :Item_geometry_func(a, srid) {}
  const char *func_name() const { return "st_geometryfromtext"; }
  String *val_str(String *);
};

class Item_func_geometry_from_wkb: public Item_geometry_func
{
public:
  Item_func_geometry_from_wkb(Item *a): Item_geometry_func(a) {}
  Item_func_geometry_from_wkb(Item *a, Item *srid): Item_geometry_func(a, srid) {}
  const char *func_name() const { return "st_geometryfromwkb"; }
  String *val_str(String *);
};

class Item_func_as_wkt: public Item_str_ascii_func
{
public:
  Item_func_as_wkt(Item *a): Item_str_ascii_func(a) {}
  const char *func_name() const { return "st_astext"; }
  String *val_str_ascii(String *);
  void fix_length_and_dec();
};

class Item_func_as_wkb: public Item_geometry_func
{
public:
  Item_func_as_wkb(Item *a): Item_geometry_func(a) {}
  const char *func_name() const { return "st_aswkb"; }
  String *val_str(String *);
  enum_field_types field_type() const  { return MYSQL_TYPE_BLOB; }
};

class Item_func_geometry_type: public Item_str_ascii_func
{
public:
  Item_func_geometry_type(Item *a): Item_str_ascii_func(a) {}
  String *val_str_ascii(String *);
  const char *func_name() const { return "st_geometrytype"; }
  void fix_length_and_dec() 
  {
    // "GeometryCollection" is the longest
    fix_length_and_charset(20, default_charset());
    set_persist_maybe_null(1);
  };
};

class Item_func_centroid: public Item_geometry_func
{
public:
  Item_func_centroid(Item *a): Item_geometry_func(a) {}
  const char *func_name() const { return "st_centroid"; }
  String *val_str(String *);
  Field::geometry_type get_geometry_type() const;
};

class Item_func_envelope: public Item_geometry_func
{
public:
  Item_func_envelope(Item *a): Item_geometry_func(a) {}
  const char *func_name() const { return "st_envelope"; }
  String *val_str(String *);
  Field::geometry_type get_geometry_type() const;
};

class Item_func_point: public Item_geometry_func
{
public:
  Item_func_point(Item *a, Item *b): Item_geometry_func(a, b) {}
  Item_func_point(Item *a, Item *b, Item *srid): Item_geometry_func(a, b, srid) {}
  const char *func_name() const { return "st_point"; }
  String *val_str(String *);
  Field::geometry_type get_geometry_type() const;
};

class Item_func_spatial_decomp: public Item_geometry_func
{
  enum Functype decomp_func;
public:
  Item_func_spatial_decomp(Item *a, Item_func::Functype ft) :
  	Item_geometry_func(a) { decomp_func = ft; }
  const char *func_name() const 
  { 
    switch (decomp_func)
    {
      case SP_STARTPOINT:
        return "st_startpoint";
      case SP_ENDPOINT:
        return "st_endpoint";
      case SP_EXTERIORRING:
        return "st_exteriorring";
      default:
	DBUG_ASSERT(0);  // Should never happened
        return "spatial_decomp_unknown"; 
    }
  }
  String *val_str(String *);
};

class Item_func_spatial_decomp_n: public Item_geometry_func
{
  enum Functype decomp_func_n;
public:
  Item_func_spatial_decomp_n(Item *a, Item *b, Item_func::Functype ft):
  	Item_geometry_func(a, b) { decomp_func_n = ft; }
  const char *func_name() const 
  { 
    switch (decomp_func_n)
    {
      case SP_POINTN:
        return "st_pointn";
      case SP_GEOMETRYN:
        return "st_geometryn";
      case SP_INTERIORRINGN:
        return "st_interiorringn";
      default:
	DBUG_ASSERT(0);  // Should never happened
        return "spatial_decomp_n_unknown"; 
    }
  }
  String *val_str(String *);
};

class Item_func_spatial_collection: public Item_geometry_func
{
  String tmp_value;
  enum Geometry::wkbType coll_type; 
  enum Geometry::wkbType item_type;
public:
  Item_func_spatial_collection(
     List<Item> &list, enum Geometry::wkbType ct, enum Geometry::wkbType it):
  Item_geometry_func(list)
  {
    coll_type=ct;
    item_type=it;
  }
  String *val_str(String *);
  void fix_length_and_dec()
  {
    Item_geometry_func::fix_length_and_dec();
    for (unsigned int i= 0; i < arg_count; ++i)
    {
      if (args[i]->fixed && args[i]->field_type() != MYSQL_TYPE_GEOMETRY)
      {
        String str;
        args[i]->print(&str, QT_ORDINARY);
        str.append('\0');
        my_error(ER_ILLEGAL_VALUE_FOR_TYPE, MYF(0), "non geometric",
                 str.ptr());
      }
    }
  }
 
  const char *func_name() const { return "st_multipoint"; }
};


/*
  Spatial relations
*/

class Item_func_spatial_mbr_rel: public Item_bool_func2
{
  enum Functype spatial_rel;
public:
  Item_func_spatial_mbr_rel(Item *a,Item *b, enum Functype sp_rel) :
    Item_bool_func2(a,b) { spatial_rel = sp_rel; }
  longlong val_int();
  enum Functype functype() const 
  { 
    return spatial_rel;
  }
  enum Functype rev_functype() const { return spatial_rel; }
  const char *func_name() const;
  virtual inline void print(String *str, enum_query_type query_type)
  {
    Item_func::print(str, query_type);
  }
  void fix_length_and_dec() { set_persist_maybe_null(1); }
  bool is_null() { (void) val_int(); return null_value; }
};


class Item_func_spatial_rel: public Item_bool_func2
{
  enum Functype spatial_rel;
  Gcalc_heap collector;
  Gcalc_scan_iterator scan_it;
  Gcalc_function func;
  String tmp_value1,tmp_value2;
public:
  Item_func_spatial_rel(Item *a,Item *b, enum Functype sp_rel);
  virtual ~Item_func_spatial_rel();
  longlong val_int();
  enum Functype functype() const 
  { 
    return spatial_rel;
  }
  enum Functype rev_functype() const { return spatial_rel; }
  const char *func_name() const;
  virtual inline void print(String *str, enum_query_type query_type)
  {
    Item_func::print(str, query_type);
  }

  void fix_length_and_dec() { set_persist_maybe_null(1); }
  bool is_null() { (void) val_int(); return null_value; }
};


/*
  Spatial operations
*/

class Item_func_spatial_operation: public Item_geometry_func
{
public:
  Gcalc_function::op_type spatial_op;
  Gcalc_heap collector;
  Gcalc_function func;

  Gcalc_result_receiver res_receiver;
  Gcalc_operation_reducer operation;
  String tmp_value1,tmp_value2;
public:
  Item_func_spatial_operation(Item *a,Item *b, Gcalc_function::op_type sp_op) :
    Item_geometry_func(a, b), spatial_op(sp_op)
  {}
  virtual ~Item_func_spatial_operation();
  String *val_str(String *);
  const char *func_name() const;
  virtual inline void print(String *str, enum_query_type query_type)
  {
    Item_func::print(str, query_type);
  }
};


class Item_func_buffer: public Item_geometry_func
{
protected:
  class Transporter : public Gcalc_operation_transporter
  {
    int m_npoints;
    double m_d;
    double x1,y1,x2,y2;
    double x00,y00,x01,y01;
    int add_edge_buffer(double x3, double y3, bool round_p1, bool round_p2);
    int add_last_edge_buffer();
    int add_point_buffer(double x, double y);
    int complete();
    int m_nshapes;
    Gcalc_function::op_type buffer_op;
    int last_shape_pos;
    bool skip_line;

  public:
    Transporter(Gcalc_function *fn, Gcalc_heap *heap, double d) :
      Gcalc_operation_transporter(fn, heap), m_npoints(0), m_d(d),
      m_nshapes(0), buffer_op((d > 0.0) ? Gcalc_function::op_union :
                                          Gcalc_function::op_difference),
      skip_line(FALSE)
    {}
    int single_point(double x, double y);
    int start_line();
    int complete_line();
    int start_poly();
    int complete_poly();
    int start_ring();
    int complete_ring();
    int add_point(double x, double y);

    int start_collection(int n_objects);
  };
  Gcalc_heap collector;
  Gcalc_function func;

  Gcalc_result_receiver res_receiver;
  Gcalc_operation_reducer operation;
  String tmp_value;

public:
  Item_func_buffer(Item *obj, Item *distance):
    Item_geometry_func(obj, distance) {}
  const char *func_name() const { return "st_buffer"; }
  String *val_str(String *);
};


class Item_func_isempty: public Item_bool_func
{
public:
  Item_func_isempty(Item *a): Item_bool_func(a) {}
  longlong val_int();
  optimize_type select_optimize() const { return OPTIMIZE_NONE; }
  const char *func_name() const { return "st_isempty"; }
  void fix_length_and_dec() { set_persist_maybe_null(1); }
};

class Item_func_issimple: public Item_bool_func
{
  Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_scan_iterator scan_it;
  String tmp;
public:
  Item_func_issimple(Item *a): Item_bool_func(a) {}
  longlong val_int();
  optimize_type select_optimize() const { return OPTIMIZE_NONE; }
  const char *func_name() const { return "st_issimple"; }
  void fix_length_and_dec() { set_persist_maybe_null(1); }
};

class Item_func_isclosed: public Item_bool_func
{
public:
  Item_func_isclosed(Item *a): Item_bool_func(a) {}
  longlong val_int();
  optimize_type select_optimize() const { return OPTIMIZE_NONE; }
  const char *func_name() const { return "st_isclosed"; }
  void fix_length_and_dec() { set_persist_maybe_null(1); }
};

class Item_func_dimension: public Item_int_func
{
  String value;
public:
  Item_func_dimension(Item *a): Item_int_func(a) {}
  longlong val_int();
  const char *func_name() const { return "st_dimension"; }
  void fix_length_and_dec() { max_length= 10; set_persist_maybe_null(1); }
};

class Item_func_x: public Item_real_func
{
  String value;
public:
  Item_func_x(Item *a): Item_real_func(a) {}
  double val_real();
  const char *func_name() const { return "st_x"; }
  void fix_length_and_dec() 
  { 
    Item_real_func::fix_length_and_dec();
    set_persist_maybe_null(1);
  }
};


class Item_func_y: public Item_real_func
{
  String value;
public:
  Item_func_y(Item *a): Item_real_func(a) {}
  double val_real();
  const char *func_name() const { return "st_y"; }
  void fix_length_and_dec() 
  { 
    Item_real_func::fix_length_and_dec();
    set_persist_maybe_null(1);
  }
};


class Item_func_numgeometries: public Item_int_func
{
  String value;
public:
  Item_func_numgeometries(Item *a): Item_int_func(a) {}
  longlong val_int();
  const char *func_name() const { return "st_numgeometries"; }
  void fix_length_and_dec() { max_length= 10; set_persist_maybe_null(1); }
};


class Item_func_numinteriorring: public Item_int_func
{
  String value;
public:
  Item_func_numinteriorring(Item *a): Item_int_func(a) {}
  longlong val_int();
  const char *func_name() const { return "st_numinteriorrings"; }
  void fix_length_and_dec() { max_length= 10; set_persist_maybe_null(1); }
};


class Item_func_numpoints: public Item_int_func
{
  String value;
public:
  Item_func_numpoints(Item *a): Item_int_func(a) {}
  longlong val_int();
  const char *func_name() const { return "st_numpoints"; }
  void fix_length_and_dec() { max_length= 10; set_persist_maybe_null(1); }
};


class Item_func_area: public Item_real_func
{
  String value;
public:
  Item_func_area(Item *a): Item_real_func(a) {}
  double val_real();
  const char *func_name() const { return "st_area"; }
  void fix_length_and_dec() 
  { 
    Item_real_func::fix_length_and_dec();
    set_persist_maybe_null(1);
  }
};


class Item_func_glength: public Item_real_func
{
  String value;
public:
  Item_func_glength(Item *a): Item_real_func(a) {}
  double val_real();
  const char *func_name() const { return "st_length"; }
  void fix_length_and_dec() 
  { 
    Item_real_func::fix_length_and_dec();
    set_persist_maybe_null(1);
  }
};


class Item_func_srid: public Item_int_func
{
  String value;
public:
  Item_func_srid(Item *a): Item_int_func(a) {}
  longlong val_int();
  const char *func_name() const { return "srid"; }
  void fix_length_and_dec() { max_length= 10; set_persist_maybe_null(1); }
};


class Item_func_distance: public Item_real_func
{
  String tmp_value1;
  String tmp_value2;
  Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_scan_iterator scan_it;
public:
  Item_func_distance(Item *a, Item *b): Item_real_func(a, b) {}
  double val_real();
  const char *func_name() const { return "st_distance"; }
};

#define GEOM_NEW(thd, obj_constructor) new (thd->mem_root) obj_constructor

#else /*HAVE_SPATIAL*/

#define GEOM_NEW(thd, obj_constructor) NULL

#endif /*HAVE_SPATIAL*/
#endif /* ITEM_GEOFUNC_INCLUDED */