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Name	Size	Permission
acl.h	12.79 KB	-rw-r--r--
array.h	10.97 KB	-rw-r--r--
ascii.h	579 B	-rw-r--r--
attoptcache.h	725 B	-rw-r--r--
builtins.h	47.77 KB	-rw-r--r--
bytea.h	1.58 KB	-rw-r--r--
cash.h	2.07 KB	-rw-r--r--
catcache.h	7.51 KB	-rw-r--r--
combocid.h	698 B	-rw-r--r--
date.h	7.73 KB	-rw-r--r--
datetime.h	9.92 KB	-rw-r--r--
datum.h	1.48 KB	-rw-r--r--
dynahash.h	498 B	-rw-r--r--
dynamic_loader.h	648 B	-rw-r--r--
elog.h	12.56 KB	-rw-r--r--
errcodes.h	19.61 KB	-rw-r--r--
fmgroids.h	61.09 KB	-rw-r--r--
fmgrtab.h	1.15 KB	-rw-r--r--
formatting.h	1.41 KB	-rw-r--r--
geo_decls.h	15.86 KB	-rw-r--r--
guc.h	13.19 KB	-rw-r--r--
guc_tables.h	7.15 KB	-rw-r--r--
help_config.h	432 B	-rw-r--r--
hsearch.h	5.51 KB	-rw-r--r--
inet.h	2.66 KB	-rw-r--r--
int8.h	4.03 KB	-rw-r--r--
inval.h	1.81 KB	-rw-r--r--
json.h	916 B	-rw-r--r--
logtape.h	1.5 KB	-rw-r--r--
lsyscache.h	6.51 KB	-rw-r--r--
memutils.h	5.2 KB	-rw-r--r--
nabstime.h	5.79 KB	-rw-r--r--
numeric.h	1.88 KB	-rw-r--r--
palloc.h	3.92 KB	-rw-r--r--
pg_crc.h	4.36 KB	-rw-r--r--
pg_crc_tables.h	19.73 KB	-rw-r--r--
pg_locale.h	2.59 KB	-rw-r--r--
pg_lzcompress.h	2.97 KB	-rw-r--r--
pg_rusage.h	847 B	-rw-r--r--
plancache.h	8.02 KB	-rw-r--r--
portal.h	9.22 KB	-rw-r--r--
probes.h	37.93 KB	-rw-r--r--
ps_status.h	668 B	-rw-r--r--
rangetypes.h	7.4 KB	-rw-r--r--
rbtree.h	2.26 KB	-rw-r--r--
rel.h	12.27 KB	-rw-r--r--
relcache.h	3.17 KB	-rw-r--r--
relmapper.h	1.68 KB	-rw-r--r--
reltrigger.h	1.95 KB	-rw-r--r--
resowner.h	5.07 KB	-rw-r--r--
selfuncs.h	7.5 KB	-rw-r--r--
snapmgr.h	1.59 KB	-rw-r--r--
snapshot.h	2.59 KB	-rw-r--r--
sortsupport.h	5.3 KB	-rw-r--r--
spccache.h	556 B	-rw-r--r--
syscache.h	5.51 KB	-rw-r--r--
timestamp.h	9.5 KB	-rw-r--r--
tqual.h	3.5 KB	-rw-r--r--
tuplesort.h	4.62 KB	-rw-r--r--
tuplestore.h	3.14 KB	-rw-r--r--
typcache.h	4.26 KB	-rw-r--r--
tzparser.h	1.13 KB	-rw-r--r--
uuid.h	861 B	-rw-r--r--
varbit.h	4.27 KB	-rw-r--r--
xml.h	3.89 KB	-rw-r--r--

Code Editor : tuplestore.h

/*-------------------------------------------------------------------------
 *
 * tuplestore.h
 *	  Generalized routines for temporary tuple storage.
 *
 * This module handles temporary storage of tuples for purposes such
 * as Materialize nodes, hashjoin batch files, etc.  It is essentially
 * a dumbed-down version of tuplesort.c; it does no sorting of tuples
 * but can only store and regurgitate a sequence of tuples.  However,
 * because no sort is required, it is allowed to start reading the sequence
 * before it has all been written.  This is particularly useful for cursors,
 * because it allows random access within the already-scanned portion of
 * a query without having to process the underlying scan to completion.
 * Also, it is possible to support multiple independent read pointers.
 *
 * A temporary file is used to handle the data if it exceeds the
 * space limit specified by the caller.
 *
 * Beginning in Postgres 8.2, what is stored is just MinimalTuples;
 * callers cannot expect valid system columns in regurgitated tuples.
 * Also, we have changed the API to return tuples in TupleTableSlots,
 * so that there is a check to prevent attempted access to system columns.
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/tuplestore.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef TUPLESTORE_H
#define TUPLESTORE_H

#include "executor/tuptable.h"

/* Tuplestorestate is an opaque type whose details are not known outside
 * tuplestore.c.
 */
typedef struct Tuplestorestate Tuplestorestate;

/*
 * Currently we only need to store MinimalTuples, but it would be easy
 * to support the same behavior for IndexTuples and/or bare Datums.
 */

extern Tuplestorestate *tuplestore_begin_heap(bool randomAccess,
					  bool interXact,
					  int maxKBytes);

extern void tuplestore_set_eflags(Tuplestorestate *state, int eflags);

extern void tuplestore_puttupleslot(Tuplestorestate *state,
						TupleTableSlot *slot);
extern void tuplestore_puttuple(Tuplestorestate *state, HeapTuple tuple);
extern void tuplestore_putvalues(Tuplestorestate *state, TupleDesc tdesc,
					 Datum *values, bool *isnull);

/* tuplestore_donestoring() used to be required, but is no longer used */
#define tuplestore_donestoring(state)	((void) 0)

extern int	tuplestore_alloc_read_pointer(Tuplestorestate *state, int eflags);

extern void tuplestore_select_read_pointer(Tuplestorestate *state, int ptr);

extern void tuplestore_copy_read_pointer(Tuplestorestate *state,
							 int srcptr, int destptr);

extern void tuplestore_trim(Tuplestorestate *state);

extern bool tuplestore_in_memory(Tuplestorestate *state);

extern bool tuplestore_gettupleslot(Tuplestorestate *state, bool forward,
						bool copy, TupleTableSlot *slot);
extern bool tuplestore_advance(Tuplestorestate *state, bool forward);

extern bool tuplestore_ateof(Tuplestorestate *state);

extern void tuplestore_rescan(Tuplestorestate *state);

extern void tuplestore_clear(Tuplestorestate *state);

extern void tuplestore_end(Tuplestorestate *state);

#endif   /* TUPLESTORE_H */

${this.title}

Code Editor : tuplestore.h