hstore_io.c File Reference

#include "postgres.h"
#include <ctype.h>
#include "access/htup_details.h"
#include "catalog/pg_type.h"
#include "common/jsonapi.h"
#include "funcapi.h"
#include "hstore.h"
#include "lib/stringinfo.h"
#include "libpq/pqformat.h"
#include "nodes/miscnodes.h"
#include "parser/scansup.h"
#include "utils/builtins.h"
#include "utils/json.h"
#include "utils/jsonb.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/typcache.h"

Include dependency graph for hstore_io.c:

Go to the source code of this file.

Data Structures
struct	HSParser
struct	ColumnIOData
struct	RecordIOData

Macros
#define	RESIZEPRSBUF
#define	PRSSYNTAXERROR   return prssyntaxerror(state)
#define	PRSEOF   return prseof(state)
#define	GV_WAITVAL   0
#define	GV_INVAL   1
#define	GV_INESCVAL   2
#define	GV_WAITESCIN   3
#define	GV_WAITESCESCIN   4
#define	WKEY   0
#define	WVAL   1
#define	WEQ   2
#define	WGT   3
#define	WDEL   4

Typedefs
typedef struct ColumnIOData	ColumnIOData
typedef struct RecordIOData	RecordIOData

Functions
	HSTORE_POLLUTE (hstore_from_text, tconvert)
static bool	hstoreCheckKeyLength (size_t len, HSParser *state)
static bool	hstoreCheckValLength (size_t len, HSParser *state)
static bool	prssyntaxerror (HSParser *state)
static bool	prseof (HSParser *state)
static bool	get_val (HSParser *state, bool ignoreeq, bool *escaped)
static bool	parse_hstore (HSParser *state)
static int	comparePairs (const void *a, const void *b)
int	hstoreUniquePairs (Pairs *a, int32 l, int32 *buflen)
size_t	hstoreCheckKeyLen (size_t len)
size_t	hstoreCheckValLen (size_t len)
HStore *	hstorePairs (Pairs *pairs, int32 pcount, int32 buflen)
	PG_FUNCTION_INFO_V1 (hstore_in)
Datum	hstore_in (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_recv)
Datum	hstore_recv (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_from_text)
Datum	hstore_from_text (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_from_arrays)
Datum	hstore_from_arrays (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_from_array)
Datum	hstore_from_array (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_from_record)
Datum	hstore_from_record (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_populate_record)
Datum	hstore_populate_record (PG_FUNCTION_ARGS)
static char *	cpw (char *dst, char *src, int len)
	PG_FUNCTION_INFO_V1 (hstore_out)
Datum	hstore_out (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_send)
Datum	hstore_send (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_to_json_loose)
Datum	hstore_to_json_loose (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_to_json)
Datum	hstore_to_json (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_to_jsonb)
Datum	hstore_to_jsonb (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (hstore_to_jsonb_loose)
Datum	hstore_to_jsonb_loose (PG_FUNCTION_ARGS)

Variables
	PG_MODULE_MAGIC

Macro Definition Documentation

GV_INESCVAL

#define GV_INESCVAL   2

Definition at line 88 of file hstore_io.c.

GV_INVAL

#define GV_INVAL   1

Definition at line 87 of file hstore_io.c.

GV_WAITESCESCIN

#define GV_WAITESCESCIN   4

Definition at line 90 of file hstore_io.c.

GV_WAITESCIN

#define GV_WAITESCIN   3

Definition at line 89 of file hstore_io.c.

GV_WAITVAL

#define GV_WAITVAL   0

Definition at line 86 of file hstore_io.c.

PRSEOF

#define PRSEOF   return prseof(state)

Definition at line 73 of file hstore_io.c.

PRSSYNTAXERROR

#define PRSSYNTAXERROR   return prssyntaxerror(state)

Definition at line 59 of file hstore_io.c.

RESIZEPRSBUF

#define RESIZEPRSBUF

Value:

do { \
        if ( state->cur - state->word + 1 >= state->wordlen ) \
        { \
                int32 clen = state->cur - state->word; \
                state->wordlen *= 2; \
                state->word = (char*)repalloc( (void*)state->word, state->wordlen ); \
                state->cur = state->word + clen; \
        } \
} while (0)

Definition at line 48 of file hstore_io.c.

WDEL

#define WDEL   4

Definition at line 211 of file hstore_io.c.

WEQ

#define WEQ   2

Definition at line 209 of file hstore_io.c.

WGT

#define WGT   3

Definition at line 210 of file hstore_io.c.

WKEY

#define WKEY   0

Definition at line 207 of file hstore_io.c.

WVAL

#define WVAL   1

Definition at line 208 of file hstore_io.c.

Typedef Documentation

ColumnIOData

typedef struct ColumnIOData ColumnIOData

RecordIOData

typedef struct RecordIOData RecordIOData

Function Documentation

comparePairs()

static int comparePairs ( const void *  a, const void *  b  )

static

Definition at line 326 of file hstore_io.c.

{
    const Pairs *pa = a;
    const Pairs *pb = b;
 
    if (pa->keylen == pb->keylen)
    {
        int         res = memcmp(pa->key, pb->key, pa->keylen);
 
        if (res)
            return res;
 
        /* guarantee that needfree will be later */
        if (pb->needfree == pa->needfree)
            return 0;
        else if (pa->needfree)
            return 1;
        else
            return -1;
    }
    return (pa->keylen > pb->keylen) ? 1 : -1;
}

References a, b, Pairs::key, Pairs::keylen, Pairs::needfree, and res.

Referenced by hstoreUniquePairs().

cpw()

static char* cpw ( char *  dst, char *  src, int  len  )

static

Definition at line 1207 of file hstore_io.c.

{
    char       *ptr = src;
 
    while (ptr - src < len)
    {
        if (*ptr == '"' || *ptr == '\\')
            *dst++ = '\\';
        *dst++ = *ptr++;
    }
    return dst;
}

References len.

Referenced by hstore_out().

get_val()

static bool get_val ( HSParser *  state, bool  ignoreeq, bool *  escaped  )

static

Definition at line 93 of file hstore_io.c.

{
    int         st = GV_WAITVAL;
 
    state->wordlen = 32;
    state->cur = state->word = palloc(state->wordlen);
    *escaped = false;
 
    while (1)
    {
        if (st == GV_WAITVAL)
        {
            if (*(state->ptr) == '"')
            {
                *escaped = true;
                st = GV_INESCVAL;
            }
            else if (*(state->ptr) == '\0')
            {
                return false;
            }
            else if (*(state->ptr) == '=' && !ignoreeq)
            {
                PRSSYNTAXERROR;
            }
            else if (*(state->ptr) == '\\')
            {
                st = GV_WAITESCIN;
            }
            else if (!scanner_isspace((unsigned char) *(state->ptr)))
            {
                *(state->cur) = *(state->ptr);
                state->cur++;
                st = GV_INVAL;
            }
        }
        else if (st == GV_INVAL)
        {
            if (*(state->ptr) == '\\')
            {
                st = GV_WAITESCIN;
            }
            else if (*(state->ptr) == '=' && !ignoreeq)
            {
                state->ptr--;
                return true;
            }
            else if (*(state->ptr) == ',' && ignoreeq)
            {
                state->ptr--;
                return true;
            }
            else if (scanner_isspace((unsigned char) *(state->ptr)))
            {
                return true;
            }
            else if (*(state->ptr) == '\0')
            {
                state->ptr--;
                return true;
            }
            else
            {
                RESIZEPRSBUF;
                *(state->cur) = *(state->ptr);
                state->cur++;
            }
        }
        else if (st == GV_INESCVAL)
        {
            if (*(state->ptr) == '\\')
            {
                st = GV_WAITESCESCIN;
            }
            else if (*(state->ptr) == '"')
            {
                return true;
            }
            else if (*(state->ptr) == '\0')
            {
                PRSEOF;
            }
            else
            {
                RESIZEPRSBUF;
                *(state->cur) = *(state->ptr);
                state->cur++;
            }
        }
        else if (st == GV_WAITESCIN)
        {
            if (*(state->ptr) == '\0')
                PRSEOF;
            RESIZEPRSBUF;
            *(state->cur) = *(state->ptr);
            state->cur++;
            st = GV_INVAL;
        }
        else if (st == GV_WAITESCESCIN)
        {
            if (*(state->ptr) == '\0')
                PRSEOF;
            RESIZEPRSBUF;
            *(state->cur) = *(state->ptr);
            state->cur++;
            st = GV_INESCVAL;
        }
        else
            elog(ERROR, "unrecognized get_val state: %d", st);
 
        state->ptr++;
    }
}

References elog(), ERROR, GV_INESCVAL, GV_INVAL, GV_WAITESCESCIN, GV_WAITESCIN, GV_WAITVAL, palloc(), PRSEOF, PRSSYNTAXERROR, RESIZEPRSBUF, and scanner_isspace().

Referenced by parse_hstore().

hstore_from_array()

Datum hstore_from_array

(

PG_FUNCTION_ARGS

)

Definition at line 715 of file hstore_io.c.

{
    ArrayType  *in_array = PG_GETARG_ARRAYTYPE_P(0);
    int         ndims = ARR_NDIM(in_array);
    int         count;
    int32       buflen;
    HStore     *out;
    Pairs      *pairs;
    Datum      *in_datums;
    bool       *in_nulls;
    int         in_count;
    int         i;
 
    Assert(ARR_ELEMTYPE(in_array) == TEXTOID);
 
    switch (ndims)
    {
        case 0:
            out = hstorePairs(NULL, 0, 0);
            PG_RETURN_POINTER(out);
 
        case 1:
            if ((ARR_DIMS(in_array)[0]) % 2)
                ereport(ERROR,
                        (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                         errmsg("array must have even number of elements")));
            break;
 
        case 2:
            if ((ARR_DIMS(in_array)[1]) != 2)
                ereport(ERROR,
                        (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                         errmsg("array must have two columns")));
            break;
 
        default:
            ereport(ERROR,
                    (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                     errmsg("wrong number of array subscripts")));
    }
 
    deconstruct_array_builtin(in_array, TEXTOID, &in_datums, &in_nulls, &in_count);
 
    count = in_count / 2;
 
    /* see discussion in hstoreArrayToPairs() */
    if (count > MaxAllocSize / sizeof(Pairs))
        ereport(ERROR,
                (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
                 errmsg("number of pairs (%d) exceeds the maximum allowed (%d)",
                        count, (int) (MaxAllocSize / sizeof(Pairs)))));
 
    pairs = palloc(count * sizeof(Pairs));
 
    for (i = 0; i < count; ++i)
    {
        if (in_nulls[i * 2])
            ereport(ERROR,
                    (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
                     errmsg("null value not allowed for hstore key")));
 
        if (in_nulls[i * 2 + 1])
        {
            pairs[i].key = VARDATA(in_datums[i * 2]);
            pairs[i].val = NULL;
            pairs[i].keylen =
                hstoreCheckKeyLen(VARSIZE(in_datums[i * 2]) - VARHDRSZ);
            pairs[i].vallen = 4;
            pairs[i].isnull = true;
            pairs[i].needfree = false;
        }
        else
        {
            pairs[i].key = VARDATA(in_datums[i * 2]);
            pairs[i].val = VARDATA(in_datums[i * 2 + 1]);
            pairs[i].keylen =
                hstoreCheckKeyLen(VARSIZE(in_datums[i * 2]) - VARHDRSZ);
            pairs[i].vallen =
                hstoreCheckValLen(VARSIZE(in_datums[i * 2 + 1]) - VARHDRSZ);
            pairs[i].isnull = false;
            pairs[i].needfree = false;
        }
    }
 
    count = hstoreUniquePairs(pairs, count, &buflen);
 
    out = hstorePairs(pairs, count, buflen);
 
    PG_RETURN_POINTER(out);
}

References ARR_DIMS, ARR_ELEMTYPE, ARR_NDIM, Assert(), deconstruct_array_builtin(), ereport, errcode(), errmsg(), ERROR, hstoreCheckKeyLen(), hstoreCheckValLen(), hstorePairs(), hstoreUniquePairs(), i, Pairs::isnull, Pairs::key, Pairs::keylen, MaxAllocSize, Pairs::needfree, palloc(), PG_GETARG_ARRAYTYPE_P, PG_RETURN_POINTER, Pairs::val, Pairs::vallen, VARDATA, VARHDRSZ, and VARSIZE.

hstore_from_arrays()

Datum hstore_from_arrays

(

PG_FUNCTION_ARGS

)

Definition at line 599 of file hstore_io.c.

{
    int32       buflen;
    HStore     *out;
    Pairs      *pairs;
    Datum      *key_datums;
    bool       *key_nulls;
    int         key_count;
    Datum      *value_datums;
    bool       *value_nulls;
    int         value_count;
    ArrayType  *key_array;
    ArrayType  *value_array;
    int         i;
 
    if (PG_ARGISNULL(0))
        PG_RETURN_NULL();
 
    key_array = PG_GETARG_ARRAYTYPE_P(0);
 
    Assert(ARR_ELEMTYPE(key_array) == TEXTOID);
 
    /*
     * must check >1 rather than != 1 because empty arrays have 0 dimensions,
     * not 1
     */
 
    if (ARR_NDIM(key_array) > 1)
        ereport(ERROR,
                (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                 errmsg("wrong number of array subscripts")));
 
    deconstruct_array_builtin(key_array, TEXTOID, &key_datums, &key_nulls, &key_count);
 
    /* see discussion in hstoreArrayToPairs() */
    if (key_count > MaxAllocSize / sizeof(Pairs))
        ereport(ERROR,
                (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
                 errmsg("number of pairs (%d) exceeds the maximum allowed (%d)",
                        key_count, (int) (MaxAllocSize / sizeof(Pairs)))));
 
    /* value_array might be NULL */
 
    if (PG_ARGISNULL(1))
    {
        value_array = NULL;
        value_count = key_count;
        value_datums = NULL;
        value_nulls = NULL;
    }
    else
    {
        value_array = PG_GETARG_ARRAYTYPE_P(1);
 
        Assert(ARR_ELEMTYPE(value_array) == TEXTOID);
 
        if (ARR_NDIM(value_array) > 1)
            ereport(ERROR,
                    (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                     errmsg("wrong number of array subscripts")));
 
        if ((ARR_NDIM(key_array) > 0 || ARR_NDIM(value_array) > 0) &&
            (ARR_NDIM(key_array) != ARR_NDIM(value_array) ||
             ARR_DIMS(key_array)[0] != ARR_DIMS(value_array)[0] ||
             ARR_LBOUND(key_array)[0] != ARR_LBOUND(value_array)[0]))
            ereport(ERROR,
                    (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
                     errmsg("arrays must have same bounds")));
 
        deconstruct_array_builtin(value_array, TEXTOID, &value_datums, &value_nulls, &value_count);
 
        Assert(key_count == value_count);
    }
 
    pairs = palloc(key_count * sizeof(Pairs));
 
    for (i = 0; i < key_count; ++i)
    {
        if (key_nulls[i])
            ereport(ERROR,
                    (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
                     errmsg("null value not allowed for hstore key")));
 
        if (!value_nulls || value_nulls[i])
        {
            pairs[i].key = VARDATA(key_datums[i]);
            pairs[i].val = NULL;
            pairs[i].keylen =
                hstoreCheckKeyLen(VARSIZE(key_datums[i]) - VARHDRSZ);
            pairs[i].vallen = 4;
            pairs[i].isnull = true;
            pairs[i].needfree = false;
        }
        else
        {
            pairs[i].key = VARDATA(key_datums[i]);
            pairs[i].val = VARDATA(value_datums[i]);
            pairs[i].keylen =
                hstoreCheckKeyLen(VARSIZE(key_datums[i]) - VARHDRSZ);
            pairs[i].vallen =
                hstoreCheckValLen(VARSIZE(value_datums[i]) - VARHDRSZ);
            pairs[i].isnull = false;
            pairs[i].needfree = false;
        }
    }
 
    key_count = hstoreUniquePairs(pairs, key_count, &buflen);
 
    out = hstorePairs(pairs, key_count, buflen);
 
    PG_RETURN_POINTER(out);
}

References ARR_DIMS, ARR_ELEMTYPE, ARR_LBOUND, ARR_NDIM, Assert(), deconstruct_array_builtin(), ereport, errcode(), errmsg(), ERROR, hstoreCheckKeyLen(), hstoreCheckValLen(), hstorePairs(), hstoreUniquePairs(), i, Pairs::isnull, Pairs::key, Pairs::keylen, MaxAllocSize, Pairs::needfree, palloc(), PG_ARGISNULL, PG_GETARG_ARRAYTYPE_P, PG_RETURN_NULL, PG_RETURN_POINTER, Pairs::val, Pairs::vallen, VARDATA, VARHDRSZ, and VARSIZE.

hstore_from_record()

Datum hstore_from_record

(

PG_FUNCTION_ARGS

)

Definition at line 831 of file hstore_io.c.

{
    HeapTupleHeader rec;
    int32       buflen;
    HStore     *out;
    Pairs      *pairs;
    Oid         tupType;
    int32       tupTypmod;
    TupleDesc   tupdesc;
    HeapTupleData tuple;
    RecordIOData *my_extra;
    int         ncolumns;
    int         i,
                j;
    Datum      *values;
    bool       *nulls;
 
    if (PG_ARGISNULL(0))
    {
        Oid         argtype = get_fn_expr_argtype(fcinfo->flinfo, 0);
 
        /*
         * We have no tuple to look at, so the only source of type info is the
         * argtype --- which might be domain over composite, but we don't care
         * here, since we have no need to be concerned about domain
         * constraints.  The lookup_rowtype_tupdesc_domain call below will
         * error out if we don't have a known composite type oid here.
         */
        tupType = argtype;
        tupTypmod = -1;
 
        rec = NULL;
    }
    else
    {
        rec = PG_GETARG_HEAPTUPLEHEADER(0);
 
        /*
         * Extract type info from the tuple itself -- this will work even for
         * anonymous record types.
         */
        tupType = HeapTupleHeaderGetTypeId(rec);
        tupTypmod = HeapTupleHeaderGetTypMod(rec);
    }
 
    tupdesc = lookup_rowtype_tupdesc_domain(tupType, tupTypmod, false);
    ncolumns = tupdesc->natts;
 
    /*
     * We arrange to look up the needed I/O info just once per series of
     * calls, assuming the record type doesn't change underneath us.
     */
    my_extra = (RecordIOData *) fcinfo->flinfo->fn_extra;
    if (my_extra == NULL ||
        my_extra->ncolumns != ncolumns)
    {
        fcinfo->flinfo->fn_extra =
            MemoryContextAlloc(fcinfo->flinfo->fn_mcxt,
                               offsetof(RecordIOData, columns) +
                               ncolumns * sizeof(ColumnIOData));
        my_extra = (RecordIOData *) fcinfo->flinfo->fn_extra;
        my_extra->record_type = InvalidOid;
        my_extra->record_typmod = 0;
    }
 
    if (my_extra->record_type != tupType ||
        my_extra->record_typmod != tupTypmod)
    {
        MemSet(my_extra, 0,
               offsetof(RecordIOData, columns) +
               ncolumns * sizeof(ColumnIOData));
        my_extra->record_type = tupType;
        my_extra->record_typmod = tupTypmod;
        my_extra->ncolumns = ncolumns;
    }
 
    Assert(ncolumns <= MaxTupleAttributeNumber);    /* thus, no overflow */
    pairs = palloc(ncolumns * sizeof(Pairs));
 
    if (rec)
    {
        /* Build a temporary HeapTuple control structure */
        tuple.t_len = HeapTupleHeaderGetDatumLength(rec);
        ItemPointerSetInvalid(&(tuple.t_self));
        tuple.t_tableOid = InvalidOid;
        tuple.t_data = rec;
 
        values = (Datum *) palloc(ncolumns * sizeof(Datum));
        nulls = (bool *) palloc(ncolumns * sizeof(bool));
 
        /* Break down the tuple into fields */
        heap_deform_tuple(&tuple, tupdesc, values, nulls);
    }
    else
    {
        values = NULL;
        nulls = NULL;
    }
 
    for (i = 0, j = 0; i < ncolumns; ++i)
    {
        ColumnIOData *column_info = &my_extra->columns[i];
        Form_pg_attribute att = TupleDescAttr(tupdesc, i);
        Oid         column_type = att->atttypid;
        char       *value;
 
        /* Ignore dropped columns in datatype */
        if (att->attisdropped)
            continue;
 
        pairs[j].key = NameStr(att->attname);
        pairs[j].keylen = hstoreCheckKeyLen(strlen(NameStr(att->attname)));
 
        if (!nulls || nulls[i])
        {
            pairs[j].val = NULL;
            pairs[j].vallen = 4;
            pairs[j].isnull = true;
            pairs[j].needfree = false;
            ++j;
            continue;
        }
 
        /*
         * Convert the column value to text
         */
        if (column_info->column_type != column_type)
        {
            bool        typIsVarlena;
 
            getTypeOutputInfo(column_type,
                              &column_info->typiofunc,
                              &typIsVarlena);
            fmgr_info_cxt(column_info->typiofunc, &column_info->proc,
                          fcinfo->flinfo->fn_mcxt);
            column_info->column_type = column_type;
        }
 
        value = OutputFunctionCall(&column_info->proc, values[i]);
 
        pairs[j].val = value;
        pairs[j].vallen = hstoreCheckValLen(strlen(value));
        pairs[j].isnull = false;
        pairs[j].needfree = false;
        ++j;
    }
 
    ncolumns = hstoreUniquePairs(pairs, j, &buflen);
 
    out = hstorePairs(pairs, ncolumns, buflen);
 
    ReleaseTupleDesc(tupdesc);
 
    PG_RETURN_POINTER(out);
}

References Assert(), ColumnIOData::column_type, RecordIOData::columns, fmgr_info_cxt(), FmgrInfo::fn_mcxt, get_fn_expr_argtype(), getTypeOutputInfo(), heap_deform_tuple(), HeapTupleHeaderGetDatumLength, HeapTupleHeaderGetTypeId, HeapTupleHeaderGetTypMod, hstoreCheckKeyLen(), hstoreCheckValLen(), hstorePairs(), hstoreUniquePairs(), i, if(), InvalidOid, Pairs::isnull, ItemPointerSetInvalid(), j, Pairs::key, Pairs::keylen, lookup_rowtype_tupdesc_domain(), MaxTupleAttributeNumber, MemoryContextAlloc(), MemSet, NameStr, TupleDescData::natts, RecordIOData::ncolumns, Pairs::needfree, OutputFunctionCall(), palloc(), PG_ARGISNULL, PG_GETARG_HEAPTUPLEHEADER, PG_RETURN_POINTER, ColumnIOData::proc, RecordIOData::record_type, RecordIOData::record_typmod, ReleaseTupleDesc, HeapTupleData::t_data, HeapTupleData::t_len, HeapTupleData::t_self, HeapTupleData::t_tableOid, TupleDescAttr, ColumnIOData::typiofunc, Pairs::val, Pairs::vallen, value, and values.

hstore_from_text()

Datum hstore_from_text

(

PG_FUNCTION_ARGS

)

Definition at line 563 of file hstore_io.c.

{
    text       *key;
    text       *val = NULL;
    Pairs       p;
    HStore     *out;
 
    if (PG_ARGISNULL(0))
        PG_RETURN_NULL();
 
    p.needfree = false;
    key = PG_GETARG_TEXT_PP(0);
    p.key = VARDATA_ANY(key);
    p.keylen = hstoreCheckKeyLen(VARSIZE_ANY_EXHDR(key));
 
    if (PG_ARGISNULL(1))
    {
        p.vallen = 0;
        p.isnull = true;
    }
    else
    {
        val = PG_GETARG_TEXT_PP(1);
        p.val = VARDATA_ANY(val);
        p.vallen = hstoreCheckValLen(VARSIZE_ANY_EXHDR(val));
        p.isnull = false;
    }
 
    out = hstorePairs(&p, 1, p.keylen + p.vallen);
 
    PG_RETURN_POINTER(out);
}

References hstoreCheckKeyLen(), hstoreCheckValLen(), hstorePairs(), Pairs::isnull, Pairs::key, sort-test::key, Pairs::keylen, Pairs::needfree, PG_ARGISNULL, PG_GETARG_TEXT_PP, PG_RETURN_NULL, PG_RETURN_POINTER, Pairs::val, val, Pairs::vallen, VARDATA_ANY, and VARSIZE_ANY_EXHDR.

hstore_in()

Datum hstore_in

(

PG_FUNCTION_ARGS

)

Definition at line 476 of file hstore_io.c.

{
    char       *str = PG_GETARG_CSTRING(0);
    Node       *escontext = fcinfo->context;
    HSParser    state;
    int32       buflen;
    HStore     *out;
 
    state.begin = str;
    state.escontext = escontext;
 
    if (!parse_hstore(&state))
        PG_RETURN_NULL();
 
    state.pcur = hstoreUniquePairs(state.pairs, state.pcur, &buflen);
 
    out = hstorePairs(state.pairs, state.pcur, buflen);
 
    PG_RETURN_POINTER(out);
}

References hstorePairs(), hstoreUniquePairs(), parse_hstore(), PG_GETARG_CSTRING, PG_RETURN_NULL, PG_RETURN_POINTER, and generate_unaccent_rules::str.

hstore_out()

Datum hstore_out

(

PG_FUNCTION_ARGS

)

Definition at line 1222 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         buflen,
                i;
    int         count = HS_COUNT(in);
    char       *out,
               *ptr;
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
 
    if (count == 0)
        PG_RETURN_CSTRING(pstrdup(""));
 
    buflen = 0;
 
    /*
     * this loop overestimates due to pessimistic assumptions about escaping,
     * so very large hstore values can't be output. this could be fixed, but
     * many other data types probably have the same issue. This replaced code
     * that used the original varlena size for calculations, which was wrong
     * in some subtle ways.
     */
 
    for (i = 0; i < count; i++)
    {
        /* include "" and => and comma-space */
        buflen += 6 + 2 * HSTORE_KEYLEN(entries, i);
        /* include "" only if nonnull */
        buflen += 2 + (HSTORE_VALISNULL(entries, i)
                       ? 2
                       : 2 * HSTORE_VALLEN(entries, i));
    }
 
    out = ptr = palloc(buflen);
 
    for (i = 0; i < count; i++)
    {
        *ptr++ = '"';
        ptr = cpw(ptr, HSTORE_KEY(entries, base, i), HSTORE_KEYLEN(entries, i));
        *ptr++ = '"';
        *ptr++ = '=';
        *ptr++ = '>';
        if (HSTORE_VALISNULL(entries, i))
        {
            *ptr++ = 'N';
            *ptr++ = 'U';
            *ptr++ = 'L';
            *ptr++ = 'L';
        }
        else
        {
            *ptr++ = '"';
            ptr = cpw(ptr, HSTORE_VAL(entries, base, i), HSTORE_VALLEN(entries, i));
            *ptr++ = '"';
        }
 
        if (i + 1 != count)
        {
            *ptr++ = ',';
            *ptr++ = ' ';
        }
    }
    *ptr = '\0';
 
    PG_RETURN_CSTRING(out);
}

References ARRPTR, cpw(), HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, palloc(), PG_GETARG_HSTORE_P, PG_RETURN_CSTRING, pstrdup(), and STRPTR.

HSTORE_POLLUTE()

HSTORE_POLLUTE	(	hstore_from_text	,
		tconvert
	)

hstore_populate_record()

Datum hstore_populate_record

(

PG_FUNCTION_ARGS

)

Definition at line 990 of file hstore_io.c.

{
    Oid         argtype = get_fn_expr_argtype(fcinfo->flinfo, 0);
    HStore     *hs;
    HEntry     *entries;
    char       *ptr;
    HeapTupleHeader rec;
    Oid         tupType;
    int32       tupTypmod;
    TupleDesc   tupdesc;
    HeapTupleData tuple;
    HeapTuple   rettuple;
    RecordIOData *my_extra;
    int         ncolumns;
    int         i;
    Datum      *values;
    bool       *nulls;
 
    if (!type_is_rowtype(argtype))
        ereport(ERROR,
                (errcode(ERRCODE_DATATYPE_MISMATCH),
                 errmsg("first argument must be a rowtype")));
 
    if (PG_ARGISNULL(0))
    {
        if (PG_ARGISNULL(1))
            PG_RETURN_NULL();
 
        rec = NULL;
 
        /*
         * We have no tuple to look at, so the only source of type info is the
         * argtype.  The lookup_rowtype_tupdesc_domain call below will error
         * out if we don't have a known composite type oid here.
         */
        tupType = argtype;
        tupTypmod = -1;
    }
    else
    {
        rec = PG_GETARG_HEAPTUPLEHEADER(0);
 
        if (PG_ARGISNULL(1))
            PG_RETURN_POINTER(rec);
 
        /*
         * Extract type info from the tuple itself -- this will work even for
         * anonymous record types.
         */
        tupType = HeapTupleHeaderGetTypeId(rec);
        tupTypmod = HeapTupleHeaderGetTypMod(rec);
    }
 
    hs = PG_GETARG_HSTORE_P(1);
    entries = ARRPTR(hs);
    ptr = STRPTR(hs);
 
    /*
     * if the input hstore is empty, we can only skip the rest if we were
     * passed in a non-null record, since otherwise there may be issues with
     * domain nulls.
     */
 
    if (HS_COUNT(hs) == 0 && rec)
        PG_RETURN_POINTER(rec);
 
    /*
     * Lookup the input record's tupdesc.  For the moment, we don't worry
     * about whether it is a domain over composite.
     */
    tupdesc = lookup_rowtype_tupdesc_domain(tupType, tupTypmod, false);
    ncolumns = tupdesc->natts;
 
    if (rec)
    {
        /* Build a temporary HeapTuple control structure */
        tuple.t_len = HeapTupleHeaderGetDatumLength(rec);
        ItemPointerSetInvalid(&(tuple.t_self));
        tuple.t_tableOid = InvalidOid;
        tuple.t_data = rec;
    }
 
    /*
     * We arrange to look up the needed I/O info just once per series of
     * calls, assuming the record type doesn't change underneath us.
     */
    my_extra = (RecordIOData *) fcinfo->flinfo->fn_extra;
    if (my_extra == NULL ||
        my_extra->ncolumns != ncolumns)
    {
        fcinfo->flinfo->fn_extra =
            MemoryContextAlloc(fcinfo->flinfo->fn_mcxt,
                               offsetof(RecordIOData, columns) +
                               ncolumns * sizeof(ColumnIOData));
        my_extra = (RecordIOData *) fcinfo->flinfo->fn_extra;
        my_extra->record_type = InvalidOid;
        my_extra->record_typmod = 0;
        my_extra->domain_info = NULL;
    }
 
    if (my_extra->record_type != tupType ||
        my_extra->record_typmod != tupTypmod)
    {
        MemSet(my_extra, 0,
               offsetof(RecordIOData, columns) +
               ncolumns * sizeof(ColumnIOData));
        my_extra->record_type = tupType;
        my_extra->record_typmod = tupTypmod;
        my_extra->ncolumns = ncolumns;
    }
 
    values = (Datum *) palloc(ncolumns * sizeof(Datum));
    nulls = (bool *) palloc(ncolumns * sizeof(bool));
 
    if (rec)
    {
        /* Break down the tuple into fields */
        heap_deform_tuple(&tuple, tupdesc, values, nulls);
    }
    else
    {
        for (i = 0; i < ncolumns; ++i)
        {
            values[i] = (Datum) 0;
            nulls[i] = true;
        }
    }
 
    for (i = 0; i < ncolumns; ++i)
    {
        ColumnIOData *column_info = &my_extra->columns[i];
        Form_pg_attribute att = TupleDescAttr(tupdesc, i);
        Oid         column_type = att->atttypid;
        char       *value;
        int         idx;
        int         vallen;
 
        /* Ignore dropped columns in datatype */
        if (att->attisdropped)
        {
            nulls[i] = true;
            continue;
        }
 
        idx = hstoreFindKey(hs, 0,
                            NameStr(att->attname),
                            strlen(NameStr(att->attname)));
 
        /*
         * we can't just skip here if the key wasn't found since we might have
         * a domain to deal with. If we were passed in a non-null record
         * datum, we assume that the existing values are valid (if they're
         * not, then it's not our fault), but if we were passed in a null,
         * then every field which we don't populate needs to be run through
         * the input function just in case it's a domain type.
         */
        if (idx < 0 && rec)
            continue;
 
        /*
         * Prepare to convert the column value from text
         */
        if (column_info->column_type != column_type)
        {
            getTypeInputInfo(column_type,
                             &column_info->typiofunc,
                             &column_info->typioparam);
            fmgr_info_cxt(column_info->typiofunc, &column_info->proc,
                          fcinfo->flinfo->fn_mcxt);
            column_info->column_type = column_type;
        }
 
        if (idx < 0 || HSTORE_VALISNULL(entries, idx))
        {
            /*
             * need InputFunctionCall to happen even for nulls, so that domain
             * checks are done
             */
            values[i] = InputFunctionCall(&column_info->proc, NULL,
                                          column_info->typioparam,
                                          att->atttypmod);
            nulls[i] = true;
        }
        else
        {
            vallen = HSTORE_VALLEN(entries, idx);
            value = palloc(1 + vallen);
            memcpy(value, HSTORE_VAL(entries, ptr, idx), vallen);
            value[vallen] = 0;
 
            values[i] = InputFunctionCall(&column_info->proc, value,
                                          column_info->typioparam,
                                          att->atttypmod);
            nulls[i] = false;
        }
    }
 
    rettuple = heap_form_tuple(tupdesc, values, nulls);
 
    /*
     * If the target type is domain over composite, all we know at this point
     * is that we've made a valid value of the base composite type.  Must
     * check domain constraints before deciding we're done.
     */
    if (argtype != tupdesc->tdtypeid)
        domain_check(HeapTupleGetDatum(rettuple), false,
                     argtype,
                     &my_extra->domain_info,
                     fcinfo->flinfo->fn_mcxt);
 
    ReleaseTupleDesc(tupdesc);
 
    PG_RETURN_DATUM(HeapTupleGetDatum(rettuple));
}

References ARRPTR, ColumnIOData::column_type, RecordIOData::columns, domain_check(), RecordIOData::domain_info, ereport, errcode(), errmsg(), ERROR, fmgr_info_cxt(), FmgrInfo::fn_mcxt, get_fn_expr_argtype(), getTypeInputInfo(), heap_deform_tuple(), heap_form_tuple(), HeapTupleGetDatum(), HeapTupleHeaderGetDatumLength, HeapTupleHeaderGetTypeId, HeapTupleHeaderGetTypMod, HS_COUNT, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, hstoreFindKey(), i, idx(), if(), InputFunctionCall(), InvalidOid, ItemPointerSetInvalid(), lookup_rowtype_tupdesc_domain(), MemoryContextAlloc(), MemSet, NameStr, TupleDescData::natts, RecordIOData::ncolumns, palloc(), PG_ARGISNULL, PG_GETARG_HEAPTUPLEHEADER, PG_GETARG_HSTORE_P, PG_RETURN_DATUM, PG_RETURN_NULL, PG_RETURN_POINTER, ColumnIOData::proc, RecordIOData::record_type, RecordIOData::record_typmod, ReleaseTupleDesc, STRPTR, HeapTupleData::t_data, HeapTupleData::t_len, HeapTupleData::t_self, HeapTupleData::t_tableOid, TupleDescData::tdtypeid, TupleDescAttr, type_is_rowtype(), ColumnIOData::typiofunc, ColumnIOData::typioparam, value, and values.

hstore_recv()

Datum hstore_recv

(

PG_FUNCTION_ARGS

)

Definition at line 500 of file hstore_io.c.

{
    int32       buflen;
    HStore     *out;
    Pairs      *pairs;
    int32       i;
    int32       pcount;
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);
 
    pcount = pq_getmsgint(buf, 4);
 
    if (pcount == 0)
    {
        out = hstorePairs(NULL, 0, 0);
        PG_RETURN_POINTER(out);
    }
 
    if (pcount < 0 || pcount > MaxAllocSize / sizeof(Pairs))
        ereport(ERROR,
                (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
                 errmsg("number of pairs (%d) exceeds the maximum allowed (%d)",
                        pcount, (int) (MaxAllocSize / sizeof(Pairs)))));
    pairs = palloc(pcount * sizeof(Pairs));
 
    for (i = 0; i < pcount; ++i)
    {
        int         rawlen = pq_getmsgint(buf, 4);
        int         len;
 
        if (rawlen < 0)
            ereport(ERROR,
                    (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
                     errmsg("null value not allowed for hstore key")));
 
        pairs[i].key = pq_getmsgtext(buf, rawlen, &len);
        pairs[i].keylen = hstoreCheckKeyLen(len);
        pairs[i].needfree = true;
 
        rawlen = pq_getmsgint(buf, 4);
        if (rawlen < 0)
        {
            pairs[i].val = NULL;
            pairs[i].vallen = 0;
            pairs[i].isnull = true;
        }
        else
        {
            pairs[i].val = pq_getmsgtext(buf, rawlen, &len);
            pairs[i].vallen = hstoreCheckValLen(len);
            pairs[i].isnull = false;
        }
    }
 
    pcount = hstoreUniquePairs(pairs, pcount, &buflen);
 
    out = hstorePairs(pairs, pcount, buflen);
 
    PG_RETURN_POINTER(out);
}

References buf, ereport, errcode(), errmsg(), ERROR, hstoreCheckKeyLen(), hstoreCheckValLen(), hstorePairs(), hstoreUniquePairs(), i, Pairs::isnull, Pairs::key, Pairs::keylen, len, MaxAllocSize, Pairs::needfree, palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, pq_getmsgint(), pq_getmsgtext(), Pairs::val, and Pairs::vallen.

hstore_send()

Datum hstore_send

(

PG_FUNCTION_ARGS

)

Definition at line 1293 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         i;
    int         count = HS_COUNT(in);
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
    StringInfoData buf;
 
    pq_begintypsend(&buf);
 
    pq_sendint32(&buf, count);
 
    for (i = 0; i < count; i++)
    {
        int32       keylen = HSTORE_KEYLEN(entries, i);
 
        pq_sendint32(&buf, keylen);
        pq_sendtext(&buf, HSTORE_KEY(entries, base, i), keylen);
        if (HSTORE_VALISNULL(entries, i))
        {
            pq_sendint32(&buf, -1);
        }
        else
        {
            int32       vallen = HSTORE_VALLEN(entries, i);
 
            pq_sendint32(&buf, vallen);
            pq_sendtext(&buf, HSTORE_VAL(entries, base, i), vallen);
        }
    }
 
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

References ARRPTR, buf, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, PG_GETARG_HSTORE_P, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), pq_sendint32(), pq_sendtext(), and STRPTR.

hstore_to_json()

Datum hstore_to_json

(

PG_FUNCTION_ARGS

)

Definition at line 1394 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         i;
    int         count = HS_COUNT(in);
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
    StringInfoData tmp,
                dst;
 
    if (count == 0)
        PG_RETURN_TEXT_P(cstring_to_text_with_len("{}", 2));
 
    initStringInfo(&tmp);
    initStringInfo(&dst);
 
    appendStringInfoChar(&dst, '{');
 
    for (i = 0; i < count; i++)
    {
        resetStringInfo(&tmp);
        appendBinaryStringInfo(&tmp, HSTORE_KEY(entries, base, i),
                               HSTORE_KEYLEN(entries, i));
        escape_json(&dst, tmp.data);
        appendStringInfoString(&dst, ": ");
        if (HSTORE_VALISNULL(entries, i))
            appendStringInfoString(&dst, "null");
        else
        {
            resetStringInfo(&tmp);
            appendBinaryStringInfo(&tmp, HSTORE_VAL(entries, base, i),
                                   HSTORE_VALLEN(entries, i));
            escape_json(&dst, tmp.data);
        }
 
        if (i + 1 != count)
            appendStringInfoString(&dst, ", ");
    }
    appendStringInfoChar(&dst, '}');
 
    PG_RETURN_TEXT_P(cstring_to_text_with_len(dst.data, dst.len));
}

References appendBinaryStringInfo(), appendStringInfoChar(), appendStringInfoString(), ARRPTR, cstring_to_text_with_len(), StringInfoData::data, escape_json(), HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, initStringInfo(), StringInfoData::len, PG_GETARG_HSTORE_P, PG_RETURN_TEXT_P, resetStringInfo(), and STRPTR.

hstore_to_json_loose()

Datum hstore_to_json_loose

(

PG_FUNCTION_ARGS

)

Definition at line 1339 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         i;
    int         count = HS_COUNT(in);
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
    StringInfoData tmp,
                dst;
 
    if (count == 0)
        PG_RETURN_TEXT_P(cstring_to_text_with_len("{}", 2));
 
    initStringInfo(&tmp);
    initStringInfo(&dst);
 
    appendStringInfoChar(&dst, '{');
 
    for (i = 0; i < count; i++)
    {
        resetStringInfo(&tmp);
        appendBinaryStringInfo(&tmp, HSTORE_KEY(entries, base, i),
                               HSTORE_KEYLEN(entries, i));
        escape_json(&dst, tmp.data);
        appendStringInfoString(&dst, ": ");
        if (HSTORE_VALISNULL(entries, i))
            appendStringInfoString(&dst, "null");
        /* guess that values of 't' or 'f' are booleans */
        else if (HSTORE_VALLEN(entries, i) == 1 &&
                 *(HSTORE_VAL(entries, base, i)) == 't')
            appendStringInfoString(&dst, "true");
        else if (HSTORE_VALLEN(entries, i) == 1 &&
                 *(HSTORE_VAL(entries, base, i)) == 'f')
            appendStringInfoString(&dst, "false");
        else
        {
            resetStringInfo(&tmp);
            appendBinaryStringInfo(&tmp, HSTORE_VAL(entries, base, i),
                                   HSTORE_VALLEN(entries, i));
            if (IsValidJsonNumber(tmp.data, tmp.len))
                appendBinaryStringInfo(&dst, tmp.data, tmp.len);
            else
                escape_json(&dst, tmp.data);
        }
 
        if (i + 1 != count)
            appendStringInfoString(&dst, ", ");
    }
    appendStringInfoChar(&dst, '}');
 
    PG_RETURN_TEXT_P(cstring_to_text_with_len(dst.data, dst.len));
}

References appendBinaryStringInfo(), appendStringInfoChar(), appendStringInfoString(), ARRPTR, cstring_to_text_with_len(), StringInfoData::data, escape_json(), HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, initStringInfo(), IsValidJsonNumber(), StringInfoData::len, PG_GETARG_HSTORE_P, PG_RETURN_TEXT_P, resetStringInfo(), and STRPTR.

hstore_to_jsonb()

Datum hstore_to_jsonb

(

PG_FUNCTION_ARGS

)

Definition at line 1439 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         i;
    int         count = HS_COUNT(in);
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
    JsonbParseState *state = NULL;
    JsonbValue *res;
 
    (void) pushJsonbValue(&state, WJB_BEGIN_OBJECT, NULL);
 
    for (i = 0; i < count; i++)
    {
        JsonbValue  key,
                    val;
 
        key.type = jbvString;
        key.val.string.len = HSTORE_KEYLEN(entries, i);
        key.val.string.val = HSTORE_KEY(entries, base, i);
 
        (void) pushJsonbValue(&state, WJB_KEY, &key);
 
        if (HSTORE_VALISNULL(entries, i))
        {
            val.type = jbvNull;
        }
        else
        {
            val.type = jbvString;
            val.val.string.len = HSTORE_VALLEN(entries, i);
            val.val.string.val = HSTORE_VAL(entries, base, i);
        }
        (void) pushJsonbValue(&state, WJB_VALUE, &val);
    }
 
    res = pushJsonbValue(&state, WJB_END_OBJECT, NULL);
 
    PG_RETURN_POINTER(JsonbValueToJsonb(res));
}

References ARRPTR, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, jbvNull, jbvString, JsonbValueToJsonb(), sort-test::key, PG_GETARG_HSTORE_P, PG_RETURN_POINTER, pushJsonbValue(), res, STRPTR, val, WJB_BEGIN_OBJECT, WJB_END_OBJECT, WJB_KEY, and WJB_VALUE.

hstore_to_jsonb_loose()

Datum hstore_to_jsonb_loose

(

PG_FUNCTION_ARGS

)

Definition at line 1482 of file hstore_io.c.

{
    HStore     *in = PG_GETARG_HSTORE_P(0);
    int         i;
    int         count = HS_COUNT(in);
    char       *base = STRPTR(in);
    HEntry     *entries = ARRPTR(in);
    JsonbParseState *state = NULL;
    JsonbValue *res;
    StringInfoData tmp;
 
    initStringInfo(&tmp);
 
    (void) pushJsonbValue(&state, WJB_BEGIN_OBJECT, NULL);
 
    for (i = 0; i < count; i++)
    {
        JsonbValue  key,
                    val;
 
        key.type = jbvString;
        key.val.string.len = HSTORE_KEYLEN(entries, i);
        key.val.string.val = HSTORE_KEY(entries, base, i);
 
        (void) pushJsonbValue(&state, WJB_KEY, &key);
 
        if (HSTORE_VALISNULL(entries, i))
        {
            val.type = jbvNull;
        }
        /* guess that values of 't' or 'f' are booleans */
        else if (HSTORE_VALLEN(entries, i) == 1 &&
                 *(HSTORE_VAL(entries, base, i)) == 't')
        {
            val.type = jbvBool;
            val.val.boolean = true;
        }
        else if (HSTORE_VALLEN(entries, i) == 1 &&
                 *(HSTORE_VAL(entries, base, i)) == 'f')
        {
            val.type = jbvBool;
            val.val.boolean = false;
        }
        else
        {
            resetStringInfo(&tmp);
            appendBinaryStringInfo(&tmp, HSTORE_VAL(entries, base, i),
                                   HSTORE_VALLEN(entries, i));
            if (IsValidJsonNumber(tmp.data, tmp.len))
            {
                Datum       numd;
 
                val.type = jbvNumeric;
                numd = DirectFunctionCall3(numeric_in,
                                           CStringGetDatum(tmp.data),
                                           ObjectIdGetDatum(InvalidOid),
                                           Int32GetDatum(-1));
                val.val.numeric = DatumGetNumeric(numd);
            }
            else
            {
                val.type = jbvString;
                val.val.string.len = HSTORE_VALLEN(entries, i);
                val.val.string.val = HSTORE_VAL(entries, base, i);
            }
        }
        (void) pushJsonbValue(&state, WJB_VALUE, &val);
    }
 
    res = pushJsonbValue(&state, WJB_END_OBJECT, NULL);
 
    PG_RETURN_POINTER(JsonbValueToJsonb(res));
}

References appendBinaryStringInfo(), ARRPTR, CStringGetDatum(), StringInfoData::data, DatumGetNumeric(), DirectFunctionCall3, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, initStringInfo(), Int32GetDatum(), InvalidOid, IsValidJsonNumber(), jbvBool, jbvNull, jbvNumeric, jbvString, JsonbValueToJsonb(), sort-test::key, StringInfoData::len, numeric_in(), ObjectIdGetDatum(), PG_GETARG_HSTORE_P, PG_RETURN_POINTER, pushJsonbValue(), res, resetStringInfo(), STRPTR, val, WJB_BEGIN_OBJECT, WJB_END_OBJECT, WJB_KEY, and WJB_VALUE.

hstoreCheckKeyLen()

size_t hstoreCheckKeyLen

(

size_t

len

)

Definition at line 404 of file hstore_io.c.

{
    if (len > HSTORE_MAX_KEY_LEN)
        ereport(ERROR,
                (errcode(ERRCODE_STRING_DATA_RIGHT_TRUNCATION),
                 errmsg("string too long for hstore key")));
    return len;
}

References ereport, errcode(), errmsg(), ERROR, HSTORE_MAX_KEY_LEN, and len.

Referenced by hstore_from_array(), hstore_from_arrays(), hstore_from_record(), hstore_from_text(), and hstore_recv().

hstoreCheckKeyLength()

static bool hstoreCheckKeyLength ( size_t  len, HSParser *  state  )

static

Definition at line 414 of file hstore_io.c.

{
    if (len > HSTORE_MAX_KEY_LEN)
        ereturn(state->escontext, false,
                (errcode(ERRCODE_STRING_DATA_RIGHT_TRUNCATION),
                 errmsg("string too long for hstore key")));
    return true;
}

References ereturn, errcode(), errmsg(), HSTORE_MAX_KEY_LEN, and len.

Referenced by parse_hstore().

hstoreCheckValLen()

size_t hstoreCheckValLen

(

size_t

len

)

Definition at line 424 of file hstore_io.c.

{
    if (len > HSTORE_MAX_VALUE_LEN)
        ereport(ERROR,
                (errcode(ERRCODE_STRING_DATA_RIGHT_TRUNCATION),
                 errmsg("string too long for hstore value")));
    return len;
}

References ereport, errcode(), errmsg(), ERROR, HSTORE_MAX_VALUE_LEN, and len.

Referenced by hstore_from_array(), hstore_from_arrays(), hstore_from_record(), hstore_from_text(), and hstore_recv().

hstoreCheckValLength()

static bool hstoreCheckValLength ( size_t  len, HSParser *  state  )

static

Definition at line 434 of file hstore_io.c.

{
    if (len > HSTORE_MAX_VALUE_LEN)
        ereturn(state->escontext, false,
                (errcode(ERRCODE_STRING_DATA_RIGHT_TRUNCATION),
                 errmsg("string too long for hstore value")));
    return true;
}

References ereturn, errcode(), errmsg(), HSTORE_MAX_VALUE_LEN, and len.

Referenced by parse_hstore().

hstorePairs()

HStore* hstorePairs	(	Pairs *	pairs,
		int32	pcount,
		int32	buflen
	)

Definition at line 445 of file hstore_io.c.

{
    HStore     *out;
    HEntry     *entry;
    char       *ptr;
    char       *buf;
    int32       len;
    int32       i;
 
    len = CALCDATASIZE(pcount, buflen);
    out = palloc(len);
    SET_VARSIZE(out, len);
    HS_SETCOUNT(out, pcount);
 
    if (pcount == 0)
        return out;
 
    entry = ARRPTR(out);
    buf = ptr = STRPTR(out);
 
    for (i = 0; i < pcount; i++)
        HS_ADDITEM(entry, buf, ptr, pairs[i]);
 
    HS_FINALIZE(out, pcount, buf, ptr);
 
    return out;
}

References ARRPTR, buf, CALCDATASIZE, HS_ADDITEM, HS_FINALIZE, HS_SETCOUNT, i, len, palloc(), SET_VARSIZE, and STRPTR.

Referenced by hstore_from_array(), hstore_from_arrays(), hstore_from_record(), hstore_from_text(), hstore_in(), and hstore_recv().

hstoreUniquePairs()

int hstoreUniquePairs	(	Pairs *	a,
		int32	l,
		int32 *	buflen
	)

Definition at line 356 of file hstore_io.c.

{
    Pairs      *ptr,
               *res;
 
    *buflen = 0;
    if (l < 2)
    {
        if (l == 1)
            *buflen = a->keylen + ((a->isnull) ? 0 : a->vallen);
        return l;
    }
 
    qsort(a, l, sizeof(Pairs), comparePairs);
 
    /*
     * We can't use qunique here because we have some clean-up code to run on
     * removed elements.
     */
    ptr = a + 1;
    res = a;
    while (ptr - a < l)
    {
        if (ptr->keylen == res->keylen &&
            memcmp(ptr->key, res->key, res->keylen) == 0)
        {
            if (ptr->needfree)
            {
                pfree(ptr->key);
                pfree(ptr->val);
            }
        }
        else
        {
            *buflen += res->keylen + ((res->isnull) ? 0 : res->vallen);
            res++;
            if (res != ptr)
                memcpy(res, ptr, sizeof(Pairs));
        }
 
        ptr++;
    }
 
    *buflen += res->keylen + ((res->isnull) ? 0 : res->vallen);
    return res + 1 - a;
}

References a, comparePairs(), Pairs::key, Pairs::keylen, Pairs::needfree, pfree(), qsort, res, and Pairs::val.

Referenced by hstore_from_array(), hstore_from_arrays(), hstore_from_record(), hstore_in(), and hstore_recv().

parse_hstore()

static bool parse_hstore ( HSParser *  state )

static

Definition at line 215 of file hstore_io.c.

{
    int         st = WKEY;
    bool        escaped = false;
 
    state->plen = 16;
    state->pairs = (Pairs *) palloc(sizeof(Pairs) * state->plen);
    state->pcur = 0;
    state->ptr = state->begin;
    state->word = NULL;
 
    while (1)
    {
        if (st == WKEY)
        {
            if (!get_val(state, false, &escaped))
            {
                if (SOFT_ERROR_OCCURRED(state->escontext))
                    return false;
                return true;    /* EOF, all okay */
            }
            if (state->pcur >= state->plen)
            {
                state->plen *= 2;
                state->pairs = (Pairs *) repalloc(state->pairs, sizeof(Pairs) * state->plen);
            }
            if (!hstoreCheckKeyLength(state->cur - state->word, state))
                return false;
            state->pairs[state->pcur].key = state->word;
            state->pairs[state->pcur].keylen = state->cur - state->word;
            state->pairs[state->pcur].val = NULL;
            state->word = NULL;
            st = WEQ;
        }
        else if (st == WEQ)
        {
            if (*(state->ptr) == '=')
            {
                st = WGT;
            }
            else if (*(state->ptr) == '\0')
            {
                PRSEOF;
            }
            else if (!scanner_isspace((unsigned char) *(state->ptr)))
            {
                PRSSYNTAXERROR;
            }
        }
        else if (st == WGT)
        {
            if (*(state->ptr) == '>')
            {
                st = WVAL;
            }
            else if (*(state->ptr) == '\0')
            {
                PRSEOF;
            }
            else
            {
                PRSSYNTAXERROR;
            }
        }
        else if (st == WVAL)
        {
            if (!get_val(state, true, &escaped))
            {
                if (SOFT_ERROR_OCCURRED(state->escontext))
                    return false;
                PRSEOF;
            }
            if (!hstoreCheckValLength(state->cur - state->word, state))
                return false;
            state->pairs[state->pcur].val = state->word;
            state->pairs[state->pcur].vallen = state->cur - state->word;
            state->pairs[state->pcur].isnull = false;
            state->pairs[state->pcur].needfree = true;
            if (state->cur - state->word == 4 && !escaped)
            {
                state->word[4] = '\0';
                if (pg_strcasecmp(state->word, "null") == 0)
                    state->pairs[state->pcur].isnull = true;
            }
            state->word = NULL;
            state->pcur++;
            st = WDEL;
        }
        else if (st == WDEL)
        {
            if (*(state->ptr) == ',')
            {
                st = WKEY;
            }
            else if (*(state->ptr) == '\0')
            {
                return true;
            }
            else if (!scanner_isspace((unsigned char) *(state->ptr)))
            {
                PRSSYNTAXERROR;
            }
        }
        else
            elog(ERROR, "unrecognized parse_hstore state: %d", st);
 
        state->ptr++;
    }
}

References elog(), ERROR, get_val(), hstoreCheckKeyLength(), hstoreCheckValLength(), palloc(), pg_strcasecmp(), PRSEOF, PRSSYNTAXERROR, repalloc(), scanner_isspace(), SOFT_ERROR_OCCURRED, WDEL, WEQ, WGT, WKEY, and WVAL.

Referenced by hstore_in().

PG_FUNCTION_INFO_V1() [1/13]

PG_FUNCTION_INFO_V1

(

hstore_from_array

)

PG_FUNCTION_INFO_V1() [2/13]

PG_FUNCTION_INFO_V1

(

hstore_from_arrays

)

PG_FUNCTION_INFO_V1() [3/13]

PG_FUNCTION_INFO_V1

(

hstore_from_record

)

PG_FUNCTION_INFO_V1() [4/13]

PG_FUNCTION_INFO_V1

(

hstore_from_text

)

PG_FUNCTION_INFO_V1() [5/13]

PG_FUNCTION_INFO_V1

(

hstore_in

)

PG_FUNCTION_INFO_V1() [6/13]

PG_FUNCTION_INFO_V1

(

hstore_out

)

PG_FUNCTION_INFO_V1() [7/13]

PG_FUNCTION_INFO_V1

(

hstore_populate_record

)

PG_FUNCTION_INFO_V1() [8/13]

PG_FUNCTION_INFO_V1

(

hstore_recv

)

PG_FUNCTION_INFO_V1() [9/13]

PG_FUNCTION_INFO_V1

(

hstore_send

)

PG_FUNCTION_INFO_V1() [10/13]

PG_FUNCTION_INFO_V1

(

hstore_to_json

)

PG_FUNCTION_INFO_V1() [11/13]

PG_FUNCTION_INFO_V1

(

hstore_to_json_loose

)

PG_FUNCTION_INFO_V1() [12/13]

PG_FUNCTION_INFO_V1

(

hstore_to_jsonb

)

PG_FUNCTION_INFO_V1() [13/13]

PG_FUNCTION_INFO_V1

(

hstore_to_jsonb_loose

)

prseof()

static bool prseof ( HSParser *  state )

static

Definition at line 76 of file hstore_io.c.

{
    errsave(state->escontext,
            (errcode(ERRCODE_SYNTAX_ERROR),
             errmsg("syntax error in hstore: unexpected end of string")));
    /* In soft error situation, return false as convenience for caller */
    return false;
}

References errcode(), errmsg(), and errsave.

prssyntaxerror()

static bool prssyntaxerror ( HSParser *  state )

static

Definition at line 62 of file hstore_io.c.

{
    errsave(state->escontext,
            (errcode(ERRCODE_SYNTAX_ERROR),
             errmsg("syntax error in hstore, near \"%.*s\" at position %d",
                    pg_mblen(state->ptr), state->ptr,
                    (int) (state->ptr - state->begin))));
    /* In soft error situation, return false as convenience for caller */
    return false;
}

References errcode(), errmsg(), errsave, and pg_mblen().

Variable Documentation

PG_MODULE_MAGIC

PG_MODULE_MAGIC

Definition at line 24 of file hstore_io.c.