temporal_supportfn.c File Reference

Index support functions for temporal types. More...

#include <assert.h>
#include <postgres.h>
#include <catalog/pg_opfamily.h>
#include <catalog/pg_am_d.h>
#include <nodes/supportnodes.h>
#include <nodes/nodeFuncs.h>
#include <nodes/makefuncs.h>
#include <optimizer/optimizer.h>
#include <parser/parse_func.h>
#include <utils/syscache.h>
#include <meos.h>
#include "temporal/temporal_boxops.h"
#include "pg_temporal/meos_catalog.h"
#include "pg_temporal/temporal_selfuncs.h"

Data Structures
struct	IndexableFunction

Enumerations
enum	TEMPORAL_FUNCTION_IDX {   EVER_EQ_IDX = 1 , ALWAYS_EQ_IDX = 2 , ECONTAINS_IDX = 3 , EDISJOINT_IDX = 4 ,   EINTERSECTS_IDX = 5 , ETOUCHES_IDX = 6 , EDWITHIN_IDX = 7 , ACONTAINS_IDX = 8 ,   ADISJOINT_IDX = 9 , AINTERSECTS_IDX = 10 , ATOUCHES_IDX = 11 , ADWITHIN_IDX = 12 }

Functions
bool	func_needs_index (Oid funcid, const IndexableFunction *idxfns, IndexableFunction *result)
	Is the function calling the support function one of those we will enhance with index ops? If so, copy the metadata for the function into idxfn and return true. More...
static FuncExpr *	makeBboxExpr (Node *arg, Oid argoid, Oid retoid, Oid callingfunc)
	To apply the "bunding box search" pattern we need access to the corresponding bbox function, so lookup the function Oid using the function name and type number. More...
static FuncExpr *	makeExpandExpr (Node *arg, Node *radiusarg, Oid argoid, Oid retoid, Oid callingfunc)
	To apply the "expand for radius search" pattern we need access to the expand function, so lookup the function Oid using the function name and type number. More...
static Oid	opFamilyAmOid (Oid opfamilyoid)
	We only add index enhancements for indexes that support range-based searches like the && operator), so only implementations based on GIST and SPGIST. More...
static int16	temporal_get_strategy_by_type (meosType temptype, uint16_t index)
static Datum	Temporal_supportfn (FunctionCallInfo fcinfo, TemporalFamily tempfamily)
	For functions that we want enhanced with spatial index lookups, add this support function to the SQL function definition, for example: More...
Datum	Tnumber_supportfn (PG_FUNCTION_ARGS)
	Support function for temporal number types. More...
Datum	Tspatial_supportfn (PG_FUNCTION_ARGS)
	Support function for temporal number types. More...
static meosType	type_to_bbox (meosType type)
	Transform the constant into a bounding box. More...

Variables
static const IndexableFunction	TemporalIndexableFunctions []
static const IndexableFunction	TNumberIndexableFunctions []
static const int16	TNumberStrategies []
static const IndexableFunction	TSpatialIndexableFunctions []
static const int16	TSpatialStrategies []

Detailed Description

Index support functions for temporal types.