PostGIS  2.1.10dev-r@@SVN_REVISION@@
static char* nd_box_to_json ( const ND_BOX nd_box,
int  ndims 
)
static

Convert an ND_BOX to a JSON string for printing.

Definition at line 369 of file gserialized_estimate.c.

References ND_BOX_T::max, ND_BOX_T::min, stringbuffer_append(), stringbuffer_aprintf(), stringbuffer_create(), stringbuffer_destroy(), and stringbuffer_getstringcopy().

Referenced by compute_gserialized_stats_mode(), estimate_join_selectivity(), estimate_selectivity(), nd_box_overlap(), and nd_stats_to_json().

370 {
371  char *rv;
372  int i;
374 
375  stringbuffer_append(sb, "{\"min\":[");
376  for ( i = 0; i < ndims; i++ )
377  {
378  if ( i ) stringbuffer_append(sb, ",");
379  stringbuffer_aprintf(sb, "%.6g", nd_box->min[i]);
380  }
381  stringbuffer_append(sb, "],\"max\":[");
382  for ( i = 0; i < ndims; i++ )
383  {
384  if ( i ) stringbuffer_append(sb, ",");
385  stringbuffer_aprintf(sb, "%.6g", nd_box->max[i]);
386  }
387  stringbuffer_append(sb, "]}");
388 
391  return rv;
392 }
stringbuffer_t * stringbuffer_create(void)
Allocate a new stringbuffer_t.
Definition: stringbuffer.c:47
char * stringbuffer_getstringcopy(stringbuffer_t *s)
Returns a newly allocated string large enough to contain the current state of the string...
Definition: stringbuffer.c:154
int stringbuffer_aprintf(stringbuffer_t *s, const char *fmt,...)
Appends a formatted string to the current string buffer, using the format and argument list provided...
Definition: stringbuffer.c:247
float4 max[ND_DIMS]
void stringbuffer_append(stringbuffer_t *s, const char *a)
Append the specified string to the stringbuffer_t.
Definition: stringbuffer.c:128
void stringbuffer_destroy(stringbuffer_t *s)
Free the stringbuffer_t and all memory managed within it.
Definition: stringbuffer.c:72
float4 min[ND_DIMS]

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