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Spatial code changed to get rid of inconsistent this->* operation

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Now we use virtual calls instead and redirect VMT pointer of the
geometry object with 'new' operation
This commit is contained in:
hf@deer.(none)
2004-03-12 12:04:00 +04:00
parent 082a01d1e0
commit f2366bf02c
5 changed files with 497 additions and 447 deletions
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271
sql/spatial.h
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@ -152,142 +152,80 @@ struct MBR
/***************************** Geometry *******************************/
class Geometry;
typedef bool (Geometry::*GF_InitFromText)(Gis_read_stream *, String *);
typedef bool (Geometry::*GF_GetDataAsText)(String *, const char **);
typedef uint32 (Geometry::*GF_GetDataSize)() const;
typedef bool (Geometry::*GF_GetMBR)(MBR *, const char **end) const;
typedef bool (Geometry::*GF_GetD)(double *) const;
typedef bool (Geometry::*GF_GetD_AND_END)(double *, const char **) const;
typedef bool (Geometry::*GF_GetI)(int *) const;
typedef bool (Geometry::*GF_GetUI)(uint32 *) const;
typedef bool (Geometry::*GF_GetUI_AND_END)(uint32 *, const char **) const;
typedef bool (Geometry::*GF_GetWS)(String *);
typedef bool (Geometry::*GF_GetUIWS)(uint32, String *) const;
#define GEOM_METHOD_PRESENT(geom_obj, method)\
(geom_obj.m_vmt->method != &Geometry::method)
struct Geometry_buffer;
class Geometry
{
public:
static void *operator new(unsigned size_t, void *buffer)
{
return buffer;
}
enum wkbType
{
wkbPoint= 1,
wkbLineString= 2,
wkbPolygon= 3,
wkbMultiPoint= 4,
wkbMultiLineString= 5,
wkbMultiPolygon= 6,
wkbGeometryCollection= 7,
wkb_end=8
wkb_point= 1,
wkb_linestring= 2,
wkb_polygon= 3,
wkb_multipoint= 4,
wkb_multilinestring= 5,
wkb_multipolygon= 6,
wkb_geometrycollection= 7,
wkb_end=7
};
enum wkbByteOrder
{
wkbXDR= 0, /* Big Endian */
wkbNDR= 1 /* Little Endian */
wkb_xdr= 0, /* Big Endian */
wkb_ndr= 1 /* Little Endian */
};
class Gis_class_info
class Class_info
{
public:
GF_InitFromText init_from_wkt;
GF_GetDataAsText get_data_as_wkt;
GF_GetDataSize get_data_size;
GF_GetMBR get_mbr;
GF_GetD get_x;
GF_GetD get_y;
GF_GetD length;
GF_GetD_AND_END area;
GF_GetI is_closed;
GF_GetUI num_interior_ring;
GF_GetUI num_points;
GF_GetUI num_geometries;
GF_GetUI_AND_END dimension;
GF_GetWS start_point;
GF_GetWS end_point;
GF_GetWS exterior_ring;
GF_GetWS centroid;
GF_GetUIWS point_n;
GF_GetUIWS interior_ring_n;
GF_GetUIWS geometry_n;
LEX_STRING m_name;
LEX_STRING_WITH_INIT m_name;
int m_type_id;
Gis_class_info *m_next_rt;
void (*m_create_func)(void *);
Class_info(const char *name, int type_id, void(*create_func)(void *));
};
Gis_class_info *m_vmt;
const Gis_class_info *get_class_info() const { return m_vmt; }
uint32 get_data_size() const { return (this->*m_vmt->get_data_size)(); }
bool init_from_wkt(Gis_read_stream *trs, String *wkb)
{ return (this->*m_vmt->init_from_wkt)(trs, wkb); }
bool get_data_as_wkt(String *txt, const char **end)
{ return (this->*m_vmt->get_data_as_wkt)(txt, end); }
int get_mbr(MBR *mbr, const char **end) const
{ return (this->*m_vmt->get_mbr)(mbr, end); }
bool dimension(uint32 *dim, const char **end) const
{
return (this->*m_vmt->dimension)(dim, end);
}
bool get_x(double *x) const { return (this->*m_vmt->get_x)(x); }
bool get_y(double *y) const { return (this->*m_vmt->get_y)(y); }
bool length(double *len) const { return (this->*m_vmt->length)(len); }
bool area(double *ar, const char **end) const
{
return (this->*m_vmt->area)(ar, end);
}
bool is_closed(int *closed) const
{ return (this->*m_vmt->is_closed)(closed); }
bool num_interior_ring(uint32 *n_int_rings) const
{ return (this->*m_vmt->num_interior_ring)(n_int_rings); }
bool num_points(uint32 *n_points) const
{ return (this->*m_vmt->num_points)(n_points); }
bool num_geometries(uint32 *num) const
{ return (this->*m_vmt->num_geometries)(num); }
bool start_point(String *point)
{ return (this->*m_vmt->start_point)(point); }
bool end_point(String *point)
{ return (this->*m_vmt->end_point)(point); }
bool exterior_ring(String *ring)
{ return (this->*m_vmt->exterior_ring)(ring); }
bool centroid(String *point)
{ return (this->*m_vmt->centroid)(point); }
bool point_n(uint32 num, String *result) const
{ return (this->*m_vmt->point_n)(num, result); }
bool interior_ring_n(uint32 num, String *result) const
{ return (this->*m_vmt->interior_ring_n)(num, result); }
bool geometry_n(uint32 num, String *result) const
{ return (this->*m_vmt->geometry_n)(num, result); }
virtual const Class_info *get_class_info() const=0;
virtual uint32 get_data_size() const=0;
virtual bool init_from_wkt(Gis_read_stream *trs, String *wkb)=0;
virtual bool get_data_as_wkt(String *txt, const char **end) const=0;
virtual bool get_mbr(MBR *mbr, const char **end) const=0;
virtual bool dimension(uint32 *dim, const char **end) const=0;
virtual int get_x(double *x) const { return -1; }
virtual int get_y(double *y) const { return -1; }
virtual int length(double *len) const { return -1; }
virtual int area(double *ar, const char **end) const { return -1;}
virtual int is_closed(int *closed) const { return -1; }
virtual int num_interior_ring(uint32 *n_int_rings) const { return -1; }
virtual int num_points(uint32 *n_points) const { return -1; }
virtual int num_geometries(uint32 *num) const { return -1; }
virtual int start_point(String *point) const { return -1; }
virtual int end_point(String *point) const { return -1; }
virtual int exterior_ring(String *ring) const { return -1; }
virtual int centroid(String *point) const { return -1; }
virtual int point_n(uint32 num, String *result) const { return -1; }
virtual int interior_ring_n(uint32 num, String *result) const { return -1; }
virtual int geometry_n(uint32 num, String *result) const { return -1; }
public:
int create_from_wkb(const char *data, uint32 data_len);
int create_from_wkt(Gis_read_stream *trs, String *wkt, bool init_stream=1);
int init(int type_id)
static Geometry *Geometry::create_by_typeid(Geometry_buffer *buffer,
int type_id)
{
m_vmt= find_class(type_id);
return !m_vmt;
}
int new_geometry(const char *name, uint32 len)
{
m_vmt= find_class(name, len);
return !m_vmt;
Class_info *ci;
if (!(ci= find_class((int) type_id)))
return NULL;
(*ci->m_create_func)((void *)buffer);
return (Geometry *)buffer;
}
static Geometry *create_from_wkb(Geometry_buffer *buffer,
const char *data, uint32 data_len);
static Geometry *create_from_wkt(Geometry_buffer *buffer,
Gis_read_stream *trs, String *wkt,
bool init_stream=1);
int as_wkt(String *wkt, const char **end)
{
uint32 len= get_class_info()->m_name.length;
@ -313,14 +251,19 @@ public:
}
bool envelope(String *result) const;
static Geometry::Class_info *ci_collection[Geometry::wkb_end];
protected:
static Gis_class_info *find_class(int type_id);
static Gis_class_info *find_class(const char *name, uint32 len);
static Class_info *find_class(int type_id)
{
return ((type_id < wkb_point) || (type_id > wkb_end)) ?
NULL : ci_collection[type_id];
}
static Class_info *find_class(const char *name, uint32 len);
const char *append_points(String *txt, uint32 n_points,
const char *data, uint32 offset);
bool create_point(String *result, const char *data);
bool create_point(String *result, double x, double y);
const char *data, uint32 offset) const;
bool create_point(String *result, const char *data) const;
bool create_point(String *result, double x, double y) const;
const char *get_mbr_for_points(MBR *mbr, const char *data, uint offset)
const;
@ -340,10 +283,10 @@ class Gis_point: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
int get_mbr(MBR *mbr, const char **end) const;
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool get_xy(double *x, double *y) const
int get_xy(double *x, double *y) const
{
const char *data= m_data;
if (no_data(data, SIZEOF_STORED_DOUBLE * 2))
@ -353,7 +296,7 @@ public:
return 0;
}
bool get_x(double *x) const
int get_x(double *x) const
{
if (no_data(m_data, SIZEOF_STORED_DOUBLE))
return 1;
@ -361,7 +304,7 @@ public:
return 0;
}
bool get_y(double *y) const
int get_y(double *y) const
{
const char *data= m_data;
if (no_data(data, SIZEOF_STORED_DOUBLE * 2)) return 1;
@ -375,6 +318,7 @@ public:
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
@ -385,20 +329,21 @@ class Gis_line_string: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool length(double *len) const;
bool is_closed(int *closed) const;
bool num_points(uint32 *n_points) const;
bool start_point(String *point);
bool end_point(String *point);
bool point_n(uint32 n, String *result);
int length(double *len) const;
int is_closed(int *closed) const;
int num_points(uint32 *n_points) const;
int start_point(String *point) const;
int end_point(String *point) const;
int point_n(uint32 n, String *result) const;
bool dimension(uint32 *dim, const char **end) const
{
*dim= 1;
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
@ -409,20 +354,21 @@ class Gis_polygon: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool area(double *ar, const char **end) const;
bool exterior_ring(String *result);
bool num_interior_ring(uint32 *n_int_rings) const;
bool interior_ring_n(uint32 num, String *result) const;
bool centroid_xy(double *x, double *y) const;
bool centroid(String *result);
int area(double *ar, const char **end) const;
int exterior_ring(String *result) const;
int num_interior_ring(uint32 *n_int_rings) const;
int interior_ring_n(uint32 num, String *result) const;
int centroid_xy(double *x, double *y) const;
int centroid(String *result) const;
bool dimension(uint32 *dim, const char **end) const
{
*dim= 2;
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
@ -433,38 +379,40 @@ class Gis_multi_point: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool num_geometries(uint32 *num) const;
bool geometry_n(uint32 num, String *result) const;
int num_geometries(uint32 *num) const;
int geometry_n(uint32 num, String *result) const;
bool dimension(uint32 *dim, const char **end) const
{
*dim= 0;
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
/***************************** MultiLineString *******************************/
class Gis_multi_line_stringg: public Geometry
class Gis_multi_line_string: public Geometry
{
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool num_geometries(uint32 *num) const;
bool geometry_n(uint32 num, String *result) const;
bool length(double *len) const;
bool is_closed(int *closed) const;
int num_geometries(uint32 *num) const;
int geometry_n(uint32 num, String *result) const;
int length(double *len) const;
int is_closed(int *closed) const;
bool dimension(uint32 *dim, const char **end) const
{
*dim= 1;
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
@ -475,19 +423,19 @@ class Gis_multi_polygon: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool num_geometries(uint32 *num) const;
bool geometry_n(uint32 num, String *result) const;
bool area(double *ar, const char **end) const;
bool centroid(String *result);
int num_geometries(uint32 *num) const;
int geometry_n(uint32 num, String *result) const;
int area(double *ar, const char **end) const;
int centroid(String *result) const;
bool dimension(uint32 *dim, const char **end) const
{
*dim= 2;
*end= 0; /* No default end */
return 0;
}
const Class_info *get_class_info() const;
};
@ -498,11 +446,18 @@ class Gis_geometry_collection: public Geometry
public:
uint32 get_data_size() const;
bool init_from_wkt(Gis_read_stream *trs, String *wkb);
bool get_data_as_wkt(String *txt, const char **end);
bool get_data_as_wkt(String *txt, const char **end) const;
bool get_mbr(MBR *mbr, const char **end) const;
bool num_geometries(uint32 *num) const;
bool geometry_n(uint32 num, String *result) const;
int num_geometries(uint32 *num) const;
int geometry_n(uint32 num, String *result) const;
bool dimension(uint32 *dim, const char **end) const;
const Class_info *get_class_info() const;
};
const int geometry_buffer_size= sizeof(Gis_point);
struct Geometry_buffer
{
void *arr[(geometry_buffer_size - 1)/sizeof(void *) + 1];
};
#endif