From: teodor Date: Tue, 16 May 2006 11:38:52 +0000 (+0000) Subject: Initial revision X-Git-Tag: start~1 X-Git-Url: http://sigaev.ru/git/gitweb.cgi?a=commitdiff_plain;h=82407e8609ec9afe3e7cdeb293c4ebac42ecd133;p=hstore.git Initial revision --- 82407e8609ec9afe3e7cdeb293c4ebac42ecd133 diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..b037234 --- /dev/null +++ b/Makefile @@ -0,0 +1,17 @@ +subdir = contrib/hstore +top_builddir = ../.. +include $(top_builddir)/src/Makefile.global + + +override CPPFLAGS := -I. $(CPPFLAGS) + +MODULE_big = hstore +OBJS = hstore_io.o hstore_op.o hstore_gist.o crc32.o + +DATA_built = hstore.sql +DOCS = README.hstore +REGRESS = hstore + +include $(top_srcdir)/contrib/contrib-global.mk +# DO NOT DELETE + diff --git a/README.hstore b/README.hstore new file mode 100644 index 0000000..89c67bf --- /dev/null +++ b/README.hstore @@ -0,0 +1,175 @@ +Hstore - contrib module for storing (key,value) pairs + +[Online version] (http://www.sai.msu.su/~megera/oddmuse/index.cgi?Hstore) + +Motivation + +Many attributes rarely searched, semistructural data, lazy DBA + +Authors + + * Oleg Bartunov , Moscow, Moscow University, Russia + * Teodor Sigaev , Moscow, Delta-Soft Ltd.,Russia + +License + +Stable version, included into PostgreSQL distribution, released under BSD license. Development version, available from this site, released under the GNU General Public License, version 2 (June 1991). + +Operations + + * hstore -> text - get value , perl analogy $h{key} + +select 'a=>q, b=>g'->'a'; + ? +------ + q + + * hstore || hstore - concatenation, perl analogy %a=( %b, %c ); + +regression=# select 'a=>b'::hstore || 'c=>d'::hstore; + ?column? +-------------------- + "a"=>"b", "c"=>"d" +(1 row) + +but, notice + +regression=# select 'a=>b'::hstore || 'a=>d'::hstore; + ?column? +---------- + "a"=>"d" +(1 row) + + * text => text - creates hstore type from two text strings + +select 'a'=>'b'; + ?column? +---------- + "a"=>"b" + + * hstore @ hstore - contains operation, check if left operand contains right. + +regression=# select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>c'; + ?column? +---------- + f +(1 row) + +regression=# select 'a=>b, b=>1, c=>NULL'::hstore @ 'b=>1'; + ?column? +---------- + t +(1 row) + + * hstore ~ hstore - contained operation, check if left operand is contained in right + +Functions + + * akeys(hstore) - returns all keys from hstore as array + +regression=# select akeys('a=>1,b=>2'); + akeys +------- + {a,b} + + * skeys(hstore) - returns all keys from hstore as strings + +regression=# select skeys('a=>1,b=>2'); + skeys +------- + a + b + + * avals(hstore) - returns all values from hstore as array + +regression=# select avals('a=>1,b=>2'); + avals +------- + {1,2} + + * svals(hstore) - returns all values from hstore as strings + +regression=# select svals('a=>1,b=>2'); + svals +------- + 1 + 2 + + * delete (hstore,text) - delete (key,value) from hstore if key matches argument. + +regression=# select delete('a=>1,b=>2','b'); + delete +---------- + "a"=>"1" + + * each(hstore) return (key, value) pairs + +regression=# select * from each('a=>1,b=>2'); + key | value +-----+------- + a | 1 + b | 2 + + * isexists (hstore,text) - returns 'true if key is exists in hstore and false otherwise. + +regression=# select isexists('a=>1','a'); + isexists +---------- + t + + * isdefined (hstore,text) - returns true if key is exists in hstore and its value is not NULL. + +regression=# select isdefined('a=>NULL','a'); + isdefined +----------- + f + +Indices + +Module provides index support for '@' and '~' operations. + +create index hidx on testhstore using gist(h); + +Note + +Use parenthesis in select below, because priority of 'is' is higher than that of '->' + +select id from entrants where (info->'education_period') is not null; + +Examples + + * add key + +update tt set h=h||'c=>3'; + + * delete key + +update tt set h=delete(h,'k1'); + + * Statistics + +hstore type, because of its intrinsic liberality, could contain a lot of different keys. Checking for valid keys is the task of application. Examples below demonstrate several techniques how to check keys statistics. + + o simple example + +select * from each('aaa=>bq, b=>NULL, ""=>1 '); + + o using table + +select (each(h)).key, (each(h)).value into stat from testhstore ; + + o online stat + +select key, count(*) from (select (each(h)).key from testhstore) as stat group by key order by count desc, key; + key | count +-----------+------- + line | 883 + query | 207 + pos | 203 + node | 202 + space | 197 + status | 195 + public | 194 + title | 190 + org | 189 +................... \ No newline at end of file diff --git a/crc32.c b/crc32.c new file mode 100644 index 0000000..dc93db7 --- /dev/null +++ b/crc32.c @@ -0,0 +1,103 @@ +/* Both POSIX and CRC32 checksums */ + +#include +#include +#include + +#include "crc32.h" + +/* + * This code implements the AUTODIN II polynomial + * The variable corresponding to the macro argument "crc" should + * be an unsigned long. + * Oroginal code by Spencer Garrett + */ + +#define _CRC32_(crc, ch) (crc = (crc >> 8) ^ crc32tab[(crc ^ (ch)) & 0xff]) + +/* generated using the AUTODIN II polynomial + * x^32 + x^26 + x^23 + x^22 + x^16 + + * x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1 + */ + +static const unsigned int crc32tab[256] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, + 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, + 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, + 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, + 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, + 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, + 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, + 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, + 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, + 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, + 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, + 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, + 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, + 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, + 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, + 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, + 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, + 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, + 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, + 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, + 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, + 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, + 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, + 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, + 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, + 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, + 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, + 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, + 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, + 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, + 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, + 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, + 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, + 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, + 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, + 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, + 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, + 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, + 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, +}; + +unsigned int +crc32_sz(char *buf, int size) +{ + unsigned int crc = ~0; + char *p; + int len, + nr; + + len = 0; + nr = size; + for (len += nr, p = buf; nr--; ++p) + _CRC32_(crc, *p); + return ~crc; +} diff --git a/crc32.h b/crc32.h new file mode 100644 index 0000000..97254a4 --- /dev/null +++ b/crc32.h @@ -0,0 +1,10 @@ +#ifndef _CRC32_H +#define _CRC32_H + +/* Returns crc32 of data block */ +extern unsigned int crc32_sz(char *buf, int size); + +/* Returns crc32 of null-terminated string */ +#define crc32(buf) crc32_sz((buf),strlen(buf)) + +#endif diff --git a/data/hstore.data b/data/hstore.data new file mode 100644 index 0000000..7651a10 --- /dev/null +++ b/data/hstore.data @@ -0,0 +1,1000 @@ +line=>1, date=>CB, node=>AA +cleaned=>f, status=>59, line=>2, disabled=>f, node=>CBB +indexed=>t, status=>35, line=>3, disabled=>f, wait=>CAA, subtitle=>BA, user=>CCA +line=>4, disabled=>t, space=>BB +cleaned=>f, line=>5, wait=>BB, query=>CAC, coauthors=>ACA, node=>CBA +world=>CB, query=>CBC, indexed=>f, line=>6, pos=>92, date=>AAB, space=>CB, coauthors=>ACA, node=>CBC +state=>98, org=>43, line=>7, pos=>97 +auth=>BB, title=>CAC, query=>BA, status=>94, line=>8, coauthors=>BBB +auth=>BAC, title=>CAA, wait=>CA, bad=>t, query=>AA, indexed=>t, line=>9, pos=>56 +title=>AAC, bad=>t, user=>AAB, query=>AC, line=>10, node=>AB +world=>CAC, user=>AB, query=>ACA, indexed=>t, line=>11, space=>CB +line=>12, pos=>72, abstract=>BBA, space=>AAC + +world=>CC, query=>AA, line=>14, disabled=>f, date=>CAC, coauthors=>AB 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+auth=>AB, org=>35, bad=>f, indexed=>f, line=>877, coauthors=>BBA +line=>878, public=>f + +auth=>CB, wait=>CBC, indexed=>f, line=>880, public=>t +query=>CC, status=>4, line=>881, disabled=>t, node=>CA +title=>BB, line=>882 +state=>53, bad=>f, cleaned=>f, status=>63, line=>883, coauthors=>BAA +auth=>ACA, world=>AC, user=>CBC, line=>884, date=>BCA, node=>BBC +auth=>BAB, state=>11, world=>CB, org=>77, query=>BA, cleaned=>f, line=>885, space=>AC +world=>CA, user=>CA, line=>886, node=>CB +state=>32, org=>50, wait=>AA, line=>887, disabled=>f, space=>BBA, public=>f +cleaned=>t, line=>888, pos=>70, node=>ABC +org=>63, user=>AAB, query=>BB, line=>889, date=>BC, space=>CBB, node=>ABC +wait=>BB, user=>BB, query=>CB, line=>890, space=>BB, coauthors=>BA, node=>ABC +auth=>BC, world=>CC, subtitle=>CB, line=>891, public=>f, coauthors=>BC +state=>13, org=>38, line=>892, coauthors=>BC, node=>ABC +auth=>CC, world=>CAC, line=>893, date=>BBA, node=>CBC + +auth=>AA, line=>895, coauthors=>BB +auth=>AA, state=>76, status=>85, line=>896, date=>CCC, public=>t, coauthors=>AB +auth=>AB, indexed=>t, cleaned=>f, line=>897 +line=>898, coauthors=>CBB + +wait=>ACC, line=>900, abstract=>BBA +auth=>AA, wait=>BCB, cleaned=>f, line=>901, abstract=>AAC +state=>68, title=>AC, subtitle=>BB, line=>902 +state=>41, wait=>ABA, bad=>f, user=>BBA, status=>46, line=>903, node=>AAB + +cleaned=>f, line=>905, pos=>33 +bad=>f, query=>BA, line=>906, pos=>48, space=>CB, public=>t +query=>CB, indexed=>t, line=>907, pos=>41, abstract=>CBB, space=>BA, public=>f, node=>BC +title=>AB, line=>908 +auth=>BC, title=>CB, line=>909, disabled=>f, space=>CA, public=>t, coauthors=>BC +world=>AA, user=>ABA, indexed=>f, line=>910, abstract=>CC +auth=>CCA, indexed=>f, line=>911, date=>AC, public=>f +world=>AAB, bad=>t, line=>912 +subtitle=>CBB, line=>913, public=>t +wait=>CB, line=>914, disabled=>f, pos=>71, date=>BA, space=>CBA, public=>f, coauthors=>BB +org=>67, wait=>CA, bad=>f, line=>915, disabled=>f, public=>t + +line=>917, date=>CB +auth=>CBB, world=>AAA, status=>83, indexed=>f, line=>918, disabled=>t, date=>CBA, coauthors=>ACC +wait=>AB, title=>BA, status=>33, line=>919, disabled=>f +wait=>ACB, cleaned=>f, line=>920, abstract=>AA, coauthors=>BCB +wait=>ABB, org=>40, world=>BC, subtitle=>CA, user=>AAC, status=>14, indexed=>t, line=>921, pos=>66 +auth=>BA, org=>22, wait=>BAB, bad=>t, user=>ACC, status=>32, line=>922 +world=>BA, query=>CAB, status=>0, line=>923 +org=>84, bad=>t, line=>924, coauthors=>BAB +auth=>ACC, subtitle=>AAA, query=>CCA, cleaned=>f, line=>925, pos=>60, space=>BC +wait=>BC, subtitle=>CCC, bad=>f, cleaned=>f, indexed=>f, line=>926, public=>f, coauthors=>AC +auth=>CA, state=>91, org=>6, world=>AA, wait=>ABB, query=>AAC, line=>927, date=>CA, node=>BAC +world=>BCA, query=>AA, user=>BBC, line=>928, disabled=>f +world=>CBC, user=>CBC, line=>929, date=>CAC +world=>BCB, bad=>f, user=>BB, line=>930 +auth=>CA, world=>AA, query=>ABA, user=>AA, indexed=>t, line=>931, coauthors=>BBC +auth=>BAA, bad=>t, line=>932, disabled=>f, pos=>93, abstract=>CCA, date=>BBA, coauthors=>AA +line=>933, space=>CAB, node=>AB + +status=>60, cleaned=>t, indexed=>t, line=>935, pos=>35, space=>CAB, node=>BBB +wait=>AAA, bad=>t, status=>26, line=>936, abstract=>ACB, space=>BBA, coauthors=>CCC +title=>BA, bad=>t, line=>937, date=>BBA, public=>t + +query=>BA, user=>BA, line=>939, disabled=>t +line=>940, date=>CC +wait=>CAB, query=>BCA, user=>BC, line=>941, pos=>8, coauthors=>ACC +line=>942, space=>BA +auth=>CA, org=>11, line=>943, pos=>99 +org=>83, line=>944, disabled=>f, date=>BBA, space=>AC, node=>AC +world=>CCA, line=>945, node=>BC +org=>95, title=>CA, world=>BA, line=>946, pos=>36, coauthors=>CA +state=>93, line=>947 +cleaned=>f, status=>5, line=>948, abstract=>BB, public=>f, coauthors=>ABC +world=>CA, org=>61, bad=>f, query=>CC, cleaned=>t, line=>949, pos=>14, space=>CC +state=>91, line=>950, abstract=>BA, date=>AB +auth=>BBC, line=>951, date=>BB +auth=>BAB, line=>952, disabled=>t, node=>AAA +auth=>CAA, subtitle=>ABA, bad=>t, line=>953 +auth=>CA, wait=>BB, org=>12, user=>BCC, cleaned=>f, line=>954, public=>f, coauthors=>AA +org=>93, cleaned=>t, line=>955, disabled=>t, public=>t, node=>ACA +line=>956, pos=>10 +org=>74, world=>CCC, subtitle=>AB, user=>AAA, cleaned=>t, line=>957, pos=>70, public=>t, node=>CC +state=>51, line=>958 +world=>CCA, title=>BCB, user=>AB, indexed=>t, line=>959, disabled=>t, pos=>21, date=>CBC +org=>86, wait=>BC, query=>BB, user=>AA, indexed=>t, line=>960, pos=>58, date=>AB +line=>961, node=>CC +auth=>BCB, world=>ACC, subtitle=>CA, bad=>t, user=>BA, indexed=>f, line=>962, public=>f + +status=>37, line=>964 +state=>70, status=>76, indexed=>f, line=>965, disabled=>t, space=>BB + +state=>67, world=>CA, title=>AA, line=>967, abstract=>BA, space=>BAA +auth=>CA, world=>AA, bad=>t, query=>BC, status=>53, indexed=>f, line=>968, date=>AB, node=>BAA +query=>AC, cleaned=>t, line=>969, abstract=>BC, space=>CAB, coauthors=>BAA +wait=>BCA, world=>CB, title=>BC, indexed=>f, line=>970, disabled=>t, pos=>70, date=>AB + +subtitle=>BC, query=>AA, line=>972 +line=>973, public=>t +org=>75, world=>AAB, subtitle=>BB, user=>CC, line=>974, space=>CA +auth=>BCB, cleaned=>t, line=>975 +title=>BAC, user=>CB, line=>976, public=>f +subtitle=>BAC, indexed=>f, cleaned=>f, line=>977, disabled=>f, abstract=>ABC, space=>ABA +state=>63, bad=>f, line=>978, pos=>93, node=>AAC + +cleaned=>f, line=>980, abstract=>CCB +state=>40, title=>ABA, subtitle=>CAB, query=>BC, line=>981, date=>CA, coauthors=>AB + +auth=>ABA, subtitle=>ACC, user=>AA, query=>AC, cleaned=>t, line=>983, date=>ACB, node=>CB +state=>32, title=>ABC, org=>58, status=>95, line=>984, disabled=>t, pos=>6, space=>CBB +title=>BCC, subtitle=>CCC, user=>BBC, line=>985, public=>f, coauthors=>CCB, node=>AA +subtitle=>ACA, query=>BCC, status=>43, cleaned=>t, indexed=>t, line=>986, abstract=>CAC + +world=>CAB, org=>21, indexed=>t, line=>988, abstract=>ABC +title=>CBC, status=>66, line=>989 + +line=>991, abstract=>BA, node=>BBB +line=>992, disabled=>t, pos=>29, public=>f +state=>53, wait=>CB, subtitle=>CCC, line=>993, date=>CAC, public=>f, coauthors=>BB +wait=>CBA, title=>CA, subtitle=>BB, user=>BAA, line=>994, disabled=>t, date=>BB, coauthors=>CCC, node=>CC +title=>BB, user=>AA, query=>CAA, status=>43, line=>995, pos=>6, abstract=>CC, public=>t +wait=>AC, query=>BA, line=>996, coauthors=>BB, node=>CCC +auth=>BC, title=>CAC, subtitle=>BA, line=>997, date=>BAA +wait=>AB, user=>ABC, line=>998, pos=>41, node=>CAC +state=>4, title=>AC, bad=>t, status=>59, line=>999, disabled=>t +user=>BC, line=>1000 diff --git a/expected/hstore.out b/expected/hstore.out new file mode 100644 index 0000000..06605e1 --- /dev/null +++ b/expected/hstore.out @@ -0,0 +1,607 @@ +\set ECHO none +psql:hstore.sql:8: NOTICE: type "hstore" is not yet defined +DETAIL: Creating a shell type definition. +psql:hstore.sql:13: NOTICE: argument type hstore is only a shell +psql:hstore.sql:132: NOTICE: type "ghstore" is not yet defined +DETAIL: Creating a shell type definition. +psql:hstore.sql:137: NOTICE: argument type ghstore is only a shell +--hstore; +select ''::hstore; + hstore +-------- + +(1 row) + +select 'a=>b'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select ' a=>b'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select 'a =>b'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select 'a=>b '::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select 'a=> b'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select '"a"=>"b"'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select ' "a"=>"b"'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select '"a" =>"b"'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select '"a"=>"b" '::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select '"a"=> "b"'::hstore; + hstore +---------- + "a"=>"b" +(1 row) + +select 'aa=>bb'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select ' aa=>bb'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select 'aa =>bb'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select 'aa=>bb '::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select 'aa=> bb'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select '"aa"=>"bb"'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select ' "aa"=>"bb"'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select '"aa" =>"bb"'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select '"aa"=>"bb" '::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select '"aa"=> "bb"'::hstore; + hstore +------------ + "aa"=>"bb" +(1 row) + +select 'aa=>bb, cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>bb , cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>bb ,cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>bb, "cc"=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>bb , "cc"=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>bb ,"cc"=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>"bb", cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>"bb" , cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>"bb" ,cc=>dd'::hstore; + hstore +------------------------ + "aa"=>"bb", "cc"=>"dd" +(1 row) + +select 'aa=>null'::hstore; + hstore +------------ + "aa"=>NULL +(1 row) + +select 'aa=>NuLl'::hstore; + hstore +------------ + "aa"=>NULL +(1 row) + +select 'aa=>"NuLl"'::hstore; + hstore +-------------- + "aa"=>"NuLl" +(1 row) + +select '\\=a=>q=w'::hstore; + hstore +------------- + "=a"=>"q=w" +(1 row) + +select '"=a"=>q\\=w'::hstore; + hstore +------------- + "=a"=>"q=w" +(1 row) + +select '"\\"a"=>q>w'::hstore; + hstore +-------------- + "\"a"=>"q>w" +(1 row) + +select '\\"a=>q"w'::hstore; + hstore +--------------- + "\"a"=>"q\"w" +(1 row) + +select ''::hstore; + hstore +-------- + +(1 row) + +select ' '::hstore; + hstore +-------- + +(1 row) + +-- -> operator +select 'aa=>b, c=>d , b=>16'::hstore->'c'; + ?column? +---------- + d +(1 row) + +select 'aa=>b, c=>d , b=>16'::hstore->'b'; + ?column? +---------- + 16 +(1 row) + +select 'aa=>b, c=>d , b=>16'::hstore->'aa'; + ?column? +---------- + b +(1 row) + +select ('aa=>b, c=>d , b=>16'::hstore->'gg') is null; + ?column? +---------- + t +(1 row) + +select ('aa=>NULL, c=>d , b=>16'::hstore->'aa') is null; + ?column? +---------- + t +(1 row) + +-- exists/defined +select isexists('a=>NULL, b=>qq', 'a'); + isexists +---------- + t +(1 row) + +select isexists('a=>NULL, b=>qq', 'b'); + isexists +---------- + t +(1 row) + +select isexists('a=>NULL, b=>qq', 'c'); + isexists +---------- + f +(1 row) + +select isdefined('a=>NULL, b=>qq', 'a'); + isdefined +----------- + f +(1 row) + +select isdefined('a=>NULL, b=>qq', 'b'); + isdefined +----------- + t +(1 row) + +select isdefined('a=>NULL, b=>qq', 'c'); + isdefined +----------- + f +(1 row) + +-- delete +select delete('a=>1 , b=>2, c=>3'::hstore, 'a'); + delete +-------------------- + "b"=>"2", "c"=>"3" +(1 row) + +select delete('a=>null , b=>2, c=>3'::hstore, 'a'); + delete +-------------------- + "b"=>"2", "c"=>"3" +(1 row) + +select delete('a=>1 , b=>2, c=>3'::hstore, 'b'); + delete +-------------------- + "a"=>"1", "c"=>"3" +(1 row) + +select delete('a=>1 , b=>2, c=>3'::hstore, 'c'); + delete +-------------------- + "a"=>"1", "b"=>"2" +(1 row) + +select delete('a=>1 , b=>2, c=>3'::hstore, 'd'); + delete +------------------------------ + "a"=>"1", "b"=>"2", "c"=>"3" +(1 row) + +-- || +select 'aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'; + ?column? +------------------------------------------- + "b"=>"g", "aa"=>"1", "cq"=>"l", "fg"=>"f" +(1 row) + +select 'aa=>1 , b=>2, cq=>3'::hstore || 'aq=>l'; + ?column? +------------------------------------------- + "b"=>"2", "aa"=>"1", "aq"=>"l", "cq"=>"3" +(1 row) + +select 'aa=>1 , b=>2, cq=>3'::hstore || 'aa=>l'; + ?column? +-------------------------------- + "b"=>"2", "aa"=>"l", "cq"=>"3" +(1 row) + +select 'aa=>1 , b=>2, cq=>3'::hstore || ''; + ?column? +-------------------------------- + "b"=>"2", "aa"=>"1", "cq"=>"3" +(1 row) + +select ''::hstore || 'cq=>l, b=>g, fg=>f'; + ?column? +-------------------------------- + "b"=>"g", "cq"=>"l", "fg"=>"f" +(1 row) + +-- => +select 'a=>g, b=>c'::hstore || ( 'asd'=>'gf' ); + ?column? +--------------------------------- + "a"=>"g", "b"=>"c", "asd"=>"gf" +(1 row) + +select 'a=>g, b=>c'::hstore || ( 'b'=>'gf' ); + ?column? +--------------------- + "a"=>"g", "b"=>"gf" +(1 row) + +-- keys/values +select akeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); + akeys +-------------- + {b,aa,cq,fg} +(1 row) + +select akeys('""=>1'); + akeys +------- + {""} +(1 row) + +select akeys(''); + akeys +------- + {} +(1 row) + +select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); + avals +----------- + {g,1,l,f} +(1 row) + +select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL'); + avals +------------ + {g,1,l,""} +(1 row) + +select avals('""=>1'); + avals +------- + {1} +(1 row) + +select avals(''); + avals +------- + {} +(1 row) + +select * from skeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); + skeys +------- + b + aa + cq + fg +(4 rows) + +select * from skeys('""=>1'); + skeys +------- + +(1 row) + +select * from skeys(''); + skeys +------- +(0 rows) + +select * from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); + svals +------- + g + 1 + l + f +(4 rows) + +select *, svals is null from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL'); + svals | ?column? +-------+---------- + g | f + 1 | f + l | f + | t +(4 rows) + +select * from svals('""=>1'); + svals +------- + 1 +(1 row) + +select * from svals(''); + svals +------- +(0 rows) + +select * from each('aaa=>bq, b=>NULL, ""=>1 '); + key | value +-----+------- + | 1 + b | + aaa | bq +(3 rows) + +-- @ +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL'; + ?column? +---------- + t +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL, c=>NULL'; + ?column? +---------- + t +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL, g=>NULL'; + ?column? +---------- + f +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'g=>NULL'; + ?column? +---------- + f +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>c'; + ?column? +---------- + f +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b'; + ?column? +---------- + t +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b, c=>NULL'; + ?column? +---------- + t +(1 row) + +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b, c=>q'; + ?column? +---------- + f +(1 row) + +CREATE TABLE testhstore (h hstore); +\copy testhstore from 'data/hstore.data' +select count(*) from testhstore where h @ 'wait=>NULL'; + count +------- + 189 +(1 row) + +select count(*) from testhstore where h @ 'wait=>CC'; + count +------- + 15 +(1 row) + +select count(*) from testhstore where h @ 'wait=>CC, public=>t'; + count +------- + 2 +(1 row) + +create index hidx on testhstore using gist(h); +set enable_seqscan=off; +select count(*) from testhstore where h @ 'wait=>NULL'; + count +------- + 189 +(1 row) + +select count(*) from testhstore where h @ 'wait=>CC'; + count +------- + 15 +(1 row) + +select count(*) from testhstore where h @ 'wait=>CC, public=>t'; + count +------- + 2 +(1 row) + +select count(*) from (select (each(h)).key from testhstore) as wow ; + count +------- + 4779 +(1 row) + +select key, count(*) from (select (each(h)).key from testhstore) as wow group by key order by count desc, key; + key | count +-----------+------- + line | 883 + query | 207 + pos | 203 + node | 202 + space | 197 + status | 195 + public | 194 + title | 190 + org | 189 + user | 189 + wait | 189 + coauthors | 188 + disabled | 185 + indexed | 184 + cleaned | 180 + bad | 179 + date | 179 + world | 176 + state | 172 + subtitle | 169 + auth | 168 + abstract | 161 +(22 rows) + diff --git a/hstore.h b/hstore.h new file mode 100644 index 0000000..b6c8a81 --- /dev/null +++ b/hstore.h @@ -0,0 +1,49 @@ +#ifndef __HSTORE_H__ +#define __HSTORE_H__ + +#include "postgres.h" + +#include "access/gist.h" +#include "access/itup.h" +#include "utils/elog.h" +#include "utils/palloc.h" +#include "utils/builtins.h" +#include "storage/bufpage.h" + + +typedef struct { + uint16 keylen; + uint16 vallen; + uint32 + valisnull:1, + pos:31; +} HEntry; + + +typedef struct { + int4 len; + int4 size; + char data[1]; +} HStore; + +#define HSHRDSIZE (2*sizeof(int4)) +#define CALCDATASIZE(x, lenstr) ( (x) * sizeof(HEntry) + HSHRDSIZE + (lenstr) ) +#define ARRPTR(x) ( (HEntry*) ( (char*)(x) + HSHRDSIZE ) ) +#define STRPTR(x) ( (char*)(x) + HSHRDSIZE + ( sizeof(HEntry) * ((HStore*)x)->size ) ) + + +#define PG_GETARG_HS(x) ((HStore*)PG_DETOAST_DATUM(PG_GETARG_DATUM(x))) + +typedef struct { + char *key; + char *val; + uint16 keylen; + uint16 vallen; + bool isnull; + bool needfree; +} Pairs; + +int comparePairs(const void *a, const void *b); +int uniquePairs(Pairs * a, int4 l, int4 *buflen); + +#endif diff --git a/hstore.sql.in b/hstore.sql.in new file mode 100644 index 0000000..98ca9cf --- /dev/null +++ b/hstore.sql.in @@ -0,0 +1,195 @@ +SET search_path = public; + +BEGIN; + +CREATE FUNCTION hstore_in(cstring) +RETURNS hstore +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict); + +CREATE FUNCTION hstore_out(hstore) +RETURNS cstring +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict); + +CREATE TYPE hstore ( + INTERNALLENGTH = -1, + INPUT = hstore_in, + OUTPUT = hstore_out, + STORAGE = extended +); + +CREATE FUNCTION fetchval(hstore,text) +RETURNS text +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE OPERATOR -> ( + LEFTARG = hstore, + RIGHTARG = text, + PROCEDURE = fetchval +); + +CREATE FUNCTION isexists(hstore,text) +RETURNS bool +AS 'MODULE_PATHNAME','exists' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION isdefined(hstore,text) +RETURNS bool +AS 'MODULE_PATHNAME','defined' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION delete(hstore,text) +RETURNS hstore +AS 'MODULE_PATHNAME','delete' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION hs_concat(hstore,hstore) +RETURNS hstore +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE OPERATOR || ( + LEFTARG = hstore, + RIGHTARG = hstore, + PROCEDURE = hs_concat +); + +CREATE FUNCTION hs_contains(hstore,hstore) +RETURNS bool +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE OPERATOR @ ( + LEFTARG = hstore, + RIGHTARG = hstore, + PROCEDURE = hs_contains, + COMMUTATOR = '~', + RESTRICT = contsel, + JOIN = contjoinsel +); + +CREATE FUNCTION hs_contained(hstore,hstore) +RETURNS bool +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE OPERATOR ~ ( + LEFTARG = hstore, + RIGHTARG = hstore, + PROCEDURE = hs_contained, + COMMUTATOR = '@', + RESTRICT = contsel, + JOIN = contjoinsel +); + +CREATE FUNCTION tconvert(text,text) +RETURNS hstore +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE OPERATOR => ( + LEFTARG = text, + RIGHTARG = text, + PROCEDURE = tconvert +); + +CREATE FUNCTION akeys(hstore) +RETURNS _text +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION avals(hstore) +RETURNS _text +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION skeys(hstore) +RETURNS setof text +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +CREATE FUNCTION svals(hstore) +RETURNS setof text +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + +create type hs_each as (key text, value text); + +CREATE FUNCTION each(hstore) +RETURNS setof hs_each +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict,iscachable); + + + +-- define the GiST support methods + +CREATE FUNCTION ghstore_in(cstring) +RETURNS ghstore +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict); + +CREATE FUNCTION ghstore_out(ghstore) +RETURNS cstring +AS 'MODULE_PATHNAME' +LANGUAGE 'C' with (isstrict); + +CREATE TYPE ghstore ( + INTERNALLENGTH = -1, + INPUT = ghstore_in, + OUTPUT = ghstore_out +); + +CREATE FUNCTION ghstore_compress(internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +CREATE FUNCTION ghstore_decompress(internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +CREATE FUNCTION ghstore_penalty(internal,internal,internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C' WITH (isstrict); + +CREATE FUNCTION ghstore_picksplit(internal, internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +CREATE FUNCTION ghstore_union(internal, internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +CREATE FUNCTION ghstore_same(internal, internal, internal) +RETURNS internal +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +CREATE FUNCTION ghstore_consistent(internal,internal,int4) +RETURNS bool +AS 'MODULE_PATHNAME' +LANGUAGE 'C'; + +-- register the opclass for indexing (not as default) +CREATE OPERATOR CLASS gist_hstore_ops +DEFAULT FOR TYPE hstore USING gist +AS + OPERATOR 7 @ RECHECK, + --OPERATOR 8 ~ RECHECK, + FUNCTION 1 ghstore_consistent (internal, internal, int4), + FUNCTION 2 ghstore_union (internal, internal), + FUNCTION 3 ghstore_compress (internal), + FUNCTION 4 ghstore_decompress (internal), + FUNCTION 5 ghstore_penalty (internal, internal, internal), + FUNCTION 6 ghstore_picksplit (internal, internal), + FUNCTION 7 ghstore_same (internal, internal, internal), + STORAGE ghstore; + +END; diff --git a/hstore_gist.c b/hstore_gist.c new file mode 100644 index 0000000..f6ecc78 --- /dev/null +++ b/hstore_gist.c @@ -0,0 +1,481 @@ +#include "hstore.h" + +#include "access/gist.h" +#include "access/itup.h" +/*#include "access/rtree.h"*/ +#include "crc32.h" + +/* bigint defines */ +#define BITBYTE 8 +#define SIGLENINT 4 /* >122 => key will toast, so very slow!!! */ +#define SIGLEN ( sizeof(int)*SIGLENINT ) +#define SIGLENBIT (SIGLEN*BITBYTE) + +typedef char BITVEC[SIGLEN]; +typedef char *BITVECP; + +#define SIGPTR(x) ( (BITVECP) ARR_DATA_PTR(x) ) + + +#define LOOPBYTE(a) \ + for(i=0;i> (i)) & 0x01 ) +#define CLRBIT(x,i) GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITBYTE ) ) +#define SETBIT(x,i) GETBYTE(x,i) |= ( 0x01 << ( (i) % BITBYTE ) ) +#define GETBIT(x,i) ( (GETBYTE(x,i) >> ( (i) % BITBYTE )) & 0x01 ) +#define HASHVAL(val) (((unsigned int)(val)) % SIGLENBIT) +#define HASH(sign, val) SETBIT((sign), HASHVAL(val)) + +typedef struct { + int4 len; + int4 flag; + char data[1]; +} GISTTYPE; + +#define ALLISTRUE 0x04 + +#define ISALLTRUE(x) ( ((GISTTYPE*)x)->flag & ALLISTRUE ) + +#define GTHDRSIZE ( sizeof(int4)*2 ) +#define CALCGTSIZE(flag) ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : SIGLEN) ) + +#define GETSIGN(x) ( (BITVECP)( (char*)x+GTHDRSIZE ) ) + +#define SUMBIT(val) ( \ + GETBITBYTE((val),0) + \ + GETBITBYTE((val),1) + \ + GETBITBYTE((val),2) + \ + GETBITBYTE((val),3) + \ + GETBITBYTE((val),4) + \ + GETBITBYTE((val),5) + \ + GETBITBYTE((val),6) + \ + GETBITBYTE((val),7) \ +) + +#ifdef GEVHDRSZ +#define GETENTRY(vec,pos) ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key)) +#else +#define GETENTRY(vec,pos) ((GISTTYPE *) DatumGetPointer(((GISTENTRY *) VARDATA(vec))[(pos)].key)) +#endif + +#define WISH_F(a,b,c) (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) ) + +PG_FUNCTION_INFO_V1(ghstore_in); +Datum ghstore_in(PG_FUNCTION_ARGS); + +PG_FUNCTION_INFO_V1(ghstore_out); +Datum ghstore_out(PG_FUNCTION_ARGS); + + +Datum +ghstore_in(PG_FUNCTION_ARGS) { + elog(ERROR, "Not implemented"); + PG_RETURN_DATUM(0); +} + +Datum +ghstore_out(PG_FUNCTION_ARGS) { + elog(ERROR, "Not implemented"); + PG_RETURN_DATUM(0); +} + +PG_FUNCTION_INFO_V1(ghstore_consistent); +PG_FUNCTION_INFO_V1(ghstore_compress); +PG_FUNCTION_INFO_V1(ghstore_decompress); +PG_FUNCTION_INFO_V1(ghstore_penalty); +PG_FUNCTION_INFO_V1(ghstore_picksplit); +PG_FUNCTION_INFO_V1(ghstore_union); +PG_FUNCTION_INFO_V1(ghstore_same); + +Datum ghstore_consistent(PG_FUNCTION_ARGS); +Datum ghstore_compress(PG_FUNCTION_ARGS); +Datum ghstore_decompress(PG_FUNCTION_ARGS); +Datum ghstore_penalty(PG_FUNCTION_ARGS); +Datum ghstore_picksplit(PG_FUNCTION_ARGS); +Datum ghstore_union(PG_FUNCTION_ARGS); +Datum ghstore_same(PG_FUNCTION_ARGS); + +Datum +ghstore_compress(PG_FUNCTION_ARGS) { + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + GISTENTRY *retval = entry; + + if (entry->leafkey) { + GISTTYPE *res = (GISTTYPE*)palloc(CALCGTSIZE(0)); + HStore *toastedval = (HStore *) DatumGetPointer(entry->key); + HStore *val = (HStore *) DatumGetPointer(PG_DETOAST_DATUM(entry->key)); + HEntry *ptr = ARRPTR(val); + char *words = STRPTR(val); + + memset(res,0,CALCGTSIZE(0)); + res->len=CALCGTSIZE(0); + + while(ptr-ARRPTR(val) < val->size) { + int h; + h = crc32_sz((char*)(words+ptr->pos), ptr->keylen); + HASH( GETSIGN(res), h); + if ( !ptr->valisnull ) { + h = crc32_sz((char *)(words+ptr->pos+ptr->keylen), ptr->vallen); + HASH( GETSIGN(res), h); + } + ptr++; + } + + if (val != toastedval) + pfree(val); + + retval = (GISTENTRY *) palloc(sizeof(GISTENTRY)); + gistentryinit(*retval, PointerGetDatum(res), + entry->rel, entry->page, + entry->offset, res->len, FALSE); + } else if ( !ISALLTRUE(DatumGetPointer(entry->key)) ) { + int4 i; + GISTTYPE *res; + BITVECP sign = GETSIGN(DatumGetPointer(entry->key)); + + LOOPBYTE( + if ((sign[i] & 0xff) != 0xff) + PG_RETURN_POINTER(retval); + ); + + res = (GISTTYPE *) palloc(CALCGTSIZE(ALLISTRUE)); + res->len = CALCGTSIZE(ALLISTRUE); + res->flag = ALLISTRUE; + + retval = (GISTENTRY *) palloc(sizeof(GISTENTRY)); + gistentryinit(*retval, PointerGetDatum(res), + entry->rel, entry->page, + entry->offset, res->len, FALSE); + } + + PG_RETURN_POINTER(retval); +} + +Datum +ghstore_decompress(PG_FUNCTION_ARGS) { + PG_RETURN_DATUM(PG_GETARG_DATUM(0)); +} + +Datum +ghstore_same(PG_FUNCTION_ARGS) { + GISTTYPE *a = (GISTTYPE *) PG_GETARG_POINTER(0); + GISTTYPE *b = (GISTTYPE *) PG_GETARG_POINTER(1); + bool *result = (bool *) PG_GETARG_POINTER(2); + + if (ISALLTRUE(a) && ISALLTRUE(b)) + *result = true; + else if (ISALLTRUE(a)) + *result = false; + else if (ISALLTRUE(b)) + *result = false; + else { + int4 i; + BITVECP sa = GETSIGN(a), + sb = GETSIGN(b); + *result = true; + LOOPBYTE( + if (sa[i] != sb[i]) { + *result = false; + break; + } + ); + } + PG_RETURN_POINTER(result); +} + +static int4 +sizebitvec(BITVECP sign) { + int4 size = 0, i; + LOOPBYTE( + size += SUMBIT(sign); + sign = (BITVECP) (((char *) sign) + 1); + ); + return size; +} + +static int +hemdistsign(BITVECP a, BITVECP b) { + int i,dist=0; + + LOOPBIT( + if ( GETBIT(a,i) != GETBIT(b,i) ) + dist++; + ); + return dist; +} + +static int +hemdist(GISTTYPE *a, GISTTYPE *b) { + if ( ISALLTRUE(a) ) { + if (ISALLTRUE(b)) + return 0; + else + return SIGLENBIT-sizebitvec(GETSIGN(b)); + } else if (ISALLTRUE(b)) + return SIGLENBIT-sizebitvec(GETSIGN(a)); + + return hemdistsign( GETSIGN(a), GETSIGN(b) ); +} + +static int4 +unionkey(BITVECP sbase, GISTTYPE * add) +{ + int4 i; + BITVECP sadd = GETSIGN(add); + + if (ISALLTRUE(add)) + return 1; + LOOPBYTE( + sbase[i] |= sadd[i]; + ); + return 0; +} + +Datum +ghstore_union(PG_FUNCTION_ARGS) { +#ifdef GEVHDRSZ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + int4 len = entryvec->n; +#else + bytea *entryvec = (bytea *) PG_GETARG_POINTER(0); + int4 len = (VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY); +#endif + int *size = (int *) PG_GETARG_POINTER(1); + BITVEC base; + int4 i; + int4 flag = 0; + GISTTYPE *result; + + MemSet((void *) base, 0, sizeof(BITVEC)); + for (i = 0; i < len; i++) { + if (unionkey(base, GETENTRY(entryvec, i))) { + flag = ALLISTRUE; + break; + } + } + + len = CALCGTSIZE(flag); + result = (GISTTYPE *) palloc(len); + *size = result->len = len; + result->flag = flag; + if (!ISALLTRUE(result)) + memcpy((void *) GETSIGN(result), (void *) base, sizeof(BITVEC)); + + PG_RETURN_POINTER(result); +} + +Datum +ghstore_penalty(PG_FUNCTION_ARGS) { + GISTENTRY *origentry = (GISTENTRY *) PG_GETARG_POINTER(0); /* always ISSIGNKEY */ + GISTENTRY *newentry = (GISTENTRY *) PG_GETARG_POINTER(1); + float *penalty = (float *) PG_GETARG_POINTER(2); + GISTTYPE *origval = (GISTTYPE *) DatumGetPointer(origentry->key); + GISTTYPE *newval = (GISTTYPE *) DatumGetPointer(newentry->key); + + *penalty=hemdist(origval,newval); + PG_RETURN_POINTER(penalty); +} + + +typedef struct { + OffsetNumber pos; + int4 cost; +} SPLITCOST; + +static int +comparecost(const void *a, const void *b) { + return ((SPLITCOST *) a)->cost - ((SPLITCOST *) b)->cost; +} + + +Datum +ghstore_picksplit(PG_FUNCTION_ARGS) { +#ifdef GEVHDRSZ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + OffsetNumber maxoff = entryvec->n - 2; +#else + bytea *entryvec = (bytea *) PG_GETARG_POINTER(0); + OffsetNumber maxoff = ((VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY)) - 2; +#endif + GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1); + OffsetNumber k, + j; + GISTTYPE *datum_l, + *datum_r; + BITVECP union_l, + union_r; + int4 size_alpha, size_beta; + int4 size_waste, + waste = -1; + int4 nbytes; + OffsetNumber seed_1 = 0, + seed_2 = 0; + OffsetNumber *left, + *right; + BITVECP ptr; + int i; + SPLITCOST *costvector; + GISTTYPE *_k, + *_j; + + nbytes = (maxoff + 2) * sizeof(OffsetNumber); + v->spl_left = (OffsetNumber *) palloc(nbytes); + v->spl_right = (OffsetNumber *) palloc(nbytes); + + for (k = FirstOffsetNumber; k < maxoff; k = OffsetNumberNext(k)) { + _k = GETENTRY(entryvec, k); + for (j = OffsetNumberNext(k); j <= maxoff; j = OffsetNumberNext(j)) { + size_waste=hemdist(_k, GETENTRY(entryvec, j)); + if (size_waste > waste ) { + waste = size_waste; + seed_1 = k; + seed_2 = j; + } + } + } + + left = v->spl_left; + v->spl_nleft = 0; + right = v->spl_right; + v->spl_nright = 0; + + if (seed_1 == 0 || seed_2 == 0) + { + seed_1 = 1; + seed_2 = 2; + } + + /* form initial .. */ + if (ISALLTRUE(GETENTRY(entryvec, seed_1))) { + datum_l = (GISTTYPE *) palloc(GTHDRSIZE); + datum_l->len = GTHDRSIZE; + datum_l->flag = ALLISTRUE; + } else { + datum_l = (GISTTYPE *) palloc(GTHDRSIZE + SIGLEN); + datum_l->len = GTHDRSIZE + SIGLEN; + datum_l->flag = 0; + memcpy((void *) GETSIGN(datum_l), (void *) GETSIGN(GETENTRY(entryvec, seed_1)), sizeof(BITVEC)) +; + } + if (ISALLTRUE(GETENTRY(entryvec, seed_2))) { + datum_r = (GISTTYPE *) palloc(GTHDRSIZE); + datum_r->len = GTHDRSIZE; + datum_r->flag = ALLISTRUE; + } else { + datum_r = (GISTTYPE *) palloc(GTHDRSIZE + SIGLEN); + datum_r->len = GTHDRSIZE + SIGLEN; + datum_r->flag = 0; + memcpy((void *) GETSIGN(datum_r), (void *) GETSIGN(GETENTRY(entryvec, seed_2)), sizeof(BITVEC)) ; + } + + maxoff = OffsetNumberNext(maxoff); + /* sort before ... */ + costvector = (SPLITCOST *) palloc(sizeof(SPLITCOST) * maxoff); + for (j = FirstOffsetNumber; j <= maxoff; j = OffsetNumberNext(j)) + { + costvector[j - 1].pos = j; + _j = GETENTRY(entryvec, j); + size_alpha = hemdist(datum_l,_j); + size_beta = hemdist(datum_r,_j); + costvector[j - 1].cost = abs(size_alpha - size_beta); + } + qsort((void *) costvector, maxoff, sizeof(SPLITCOST), comparecost); + + union_l=GETSIGN(datum_l); + union_r=GETSIGN(datum_r); + + for (k = 0; k < maxoff; k++) { + j = costvector[k].pos; + if (j == seed_1) { + *left++ = j; + v->spl_nleft++; + continue; + } else if (j == seed_2) { + *right++ = j; + v->spl_nright++; + continue; + } + _j = GETENTRY(entryvec, j); + size_alpha = hemdist(datum_l,_j); + size_beta = hemdist(datum_r,_j); + + if (size_alpha < size_beta + WISH_F(v->spl_nleft, v->spl_nright, 0.0001)) { + if (ISALLTRUE(datum_l) || ISALLTRUE(_j) ) { + if (!ISALLTRUE(datum_l)) + MemSet((void *) union_l, 0xff, sizeof(BITVEC)); + } else { + ptr=GETSIGN(_j); + LOOPBYTE( + union_l[i] |= ptr[i]; + ); + } + *left++ = j; + v->spl_nleft++; + } else { + if (ISALLTRUE(datum_r) || ISALLTRUE(_j) ) { + if (!ISALLTRUE(datum_r)) + MemSet((void *) union_r, 0xff, sizeof(BITVEC)); + } else { + ptr=GETSIGN(_j); + LOOPBYTE( + union_r[i] |= ptr[i]; + ); + } + *right++ = j; + v->spl_nright++; + } + } + + *right = *left = FirstOffsetNumber; + pfree(costvector); + + v->spl_ldatum = PointerGetDatum(datum_l); + v->spl_rdatum = PointerGetDatum(datum_r); + + PG_RETURN_POINTER(v); +} + + +Datum +ghstore_consistent(PG_FUNCTION_ARGS) { + GISTTYPE *entry = (GISTTYPE*) DatumGetPointer( ((GISTENTRY *) PG_GETARG_POINTER(0))->key ); + HStore *query=PG_GETARG_HS(1); + bool res=true; + HEntry *qe = ARRPTR(query); + char *qv = STRPTR(query); + BITVECP sign; + + if ( ISALLTRUE(entry) ) { + PG_FREE_IF_COPY(query,1); + PG_RETURN_BOOL(true); + } + + sign=GETSIGN(entry); + while(res && qe-ARRPTR(query) < query->size) { + int crc = crc32_sz((char *)(qv + qe->pos), qe->keylen); + if (GETBIT(sign,HASHVAL(crc))) { + if ( !qe->valisnull ) { + crc = crc32_sz((char *)(qv + qe->pos + qe->keylen), qe->vallen); + if ( !GETBIT(sign,HASHVAL(crc)) ) + res=false; + } + } else + res=false; + qe++; + } + + PG_FREE_IF_COPY(query,1); + PG_RETURN_BOOL(res); +} + + diff --git a/hstore_io.c b/hstore_io.c new file mode 100644 index 0000000..c372a64 --- /dev/null +++ b/hstore_io.c @@ -0,0 +1,368 @@ +#include "hstore.h" +#include + +typedef struct { + char *begin; + char *ptr; + char *cur; + char *word; + int wordlen; + + Pairs *pairs; + int pcur; + int plen; +} HSParser; + +#define RESIZEPRSBUF \ +do { \ + if ( state->cur - state->word + 1 >= state->wordlen ) \ + { \ + int4 clen = state->cur - state->word; \ + state->wordlen *= 2; \ + state->word = (char*)repalloc( (void*)state->word, state->wordlen ); \ + state->cur = state->word + clen; \ + } \ +} while (0) + + +#define GV_WAITVAL 0 +#define GV_INVAL 1 +#define GV_INESCVAL 2 +#define GV_WAITESCIN 3 +#define GV_WAITESCESCIN 4 + +static bool +get_val( HSParser *state, bool ignoreeq, bool *escaped ) { + 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 ) { + elog(ERROR,"Syntax error near '%c' at postion %d", *(state->ptr), state->ptr-state->begin); + } else if ( *(state->ptr) == '\\' ) { + st = GV_WAITESCIN; + } else if ( !isspace(*(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 ( isspace(*(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' ) { + elog(ERROR,"Unexpected end of string"); + } else { + RESIZEPRSBUF; + *(state->cur) = *(state->ptr); + state->cur++; + } + } else if ( st == GV_WAITESCIN ) { + if ( *(state->ptr) == '\0' ) + elog(ERROR,"Unexpected end of string"); + RESIZEPRSBUF; + *(state->cur) = *(state->ptr); + state->cur++; + st = GV_INVAL; + } else if ( st == GV_WAITESCESCIN ) { + if ( *(state->ptr) == '\0' ) + elog(ERROR,"Unexpected end of string"); + RESIZEPRSBUF; + *(state->cur) = *(state->ptr); + state->cur++; + st = GV_INESCVAL; + } else + elog(ERROR,"Unknown state %d at postion line %d in file '%s'", st, __LINE__, __FILE__); + + state->ptr++; + } + + return false; +} + +#define WKEY 0 +#define WVAL 1 +#define WEQ 2 +#define WGT 3 +#define WDEL 4 + + +static void +parse_hstore( HSParser *state ) { + 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) ) + return; + if ( state->pcur >= state->plen ) { + state->plen *= 2; + state->pairs = (Pairs*)repalloc( state->pairs, sizeof(Pairs) * state->plen ); + } + 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' ) { + elog(ERROR,"Unexpectd end of string"); + } else if (!isspace(*(state->ptr))) { + elog(ERROR,"Syntax error near '%c' at postion %d", *(state->ptr), state->ptr-state->begin); + } + } else if ( st == WGT ) { + if ( *(state->ptr) == '>' ) { + st = WVAL; + } else if ( *(state->ptr) == '\0' ) { + elog(ERROR,"Unexpectd end of string"); + } else { + elog(ERROR,"Syntax error near '%c' at postion %d", *(state->ptr), state->ptr-state->begin); + } + } else if ( st == WVAL ) { + if ( !get_val(state, true, &escaped) ) + elog(ERROR,"Unexpected end of string"); + 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 ( 0==strcasecmp(state->word, "null") ) + 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; + } else if (!isspace(*(state->ptr))) { + elog(ERROR,"Syntax error near '%c' at postion %d", *(state->ptr), state->ptr-state->begin); + } + } else + elog(ERROR,"Unknown state %d at line %d in file '%s'", st, __LINE__, __FILE__); + + state->ptr++; + } +} + +int +comparePairs(const void *a, const void *b) { + if ( ((Pairs*)a)->keylen == ((Pairs*)b)->keylen ) { + int res = strncmp( + ((Pairs*)a)->key, + ((Pairs*)b)->key, + ((Pairs*)a)->keylen + ); + if ( res ) + return res; + + /* guarantee that neddfree willl be later */ + if ( ((Pairs*)b)->needfree == ((Pairs*)a)->needfree ) + return 0; + else if ( ((Pairs*)a)->needfree ) + return 1; + else + return -1; + } + return ( ((Pairs*)a)->keylen > ((Pairs*)b)->keylen ) ? 1 : -1; +} + +int +uniquePairs(Pairs * a, int4 l, int4 *buflen) { + Pairs *ptr, *res; + + *buflen=0; + if ( l < 2 ) { + if ( l==1 ) + *buflen = a->keylen + ((a->isnull) ? 0 : a->vallen) ; + return l; + } + + qsort((void *) a, l, sizeof(Pairs), comparePairs); + ptr=a+1; + res=a; + while( ptr - a < l ) { + if ( ptr->keylen == res->keylen && strncmp( 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++; + memcpy(res,ptr,sizeof(Pairs)); + } + + ptr++; + } + + *buflen += res->keylen + (( res->isnull ) ? 0 : res->vallen); + return res + 1 - a; +} + +static void +freeHSParse(HSParser *state) { + int i; + + if ( state->word ) pfree( state->word ); + for (i=0;ipcur;i++) + if ( state->pairs[i].needfree ) { + if (state->pairs[i].key) pfree(state->pairs[i].key); + if (state->pairs[i].val) pfree(state->pairs[i].val); + } + pfree( state->pairs ); +} + +PG_FUNCTION_INFO_V1(hstore_in); +Datum hstore_in(PG_FUNCTION_ARGS); +Datum +hstore_in(PG_FUNCTION_ARGS) { + HSParser state; + int4 len,buflen,i; + HStore *out; + HEntry *entries; + char *ptr; + + state.begin = PG_GETARG_CSTRING(0); + + parse_hstore(&state); + + if ( state.pcur == 0 ) { + freeHSParse(&state); + len = CALCDATASIZE(0,0); + out = palloc(len); + out->len=len; + out->size=0; + PG_RETURN_POINTER(out); + } + + state.pcur = uniquePairs(state.pairs, state.pcur, &buflen); + + len=CALCDATASIZE(state.pcur, buflen); + out = palloc(len); + out->len=len; + out->size=state.pcur; + + entries=ARRPTR(out); + ptr = STRPTR(out); + + for(i=0;isize;i++) { + entries[i].keylen = state.pairs[i].keylen; + entries[i].pos = ptr - STRPTR(out); + memcpy(ptr, state.pairs[i].key, state.pairs[i].keylen); + ptr+=entries[i].keylen; + + entries[i].valisnull = state.pairs[i].isnull; + if ( entries[i].valisnull ) + entries[i].vallen=4; /* null */ + else { + entries[i].vallen = state.pairs[i].vallen; + memcpy(ptr, state.pairs[i].val,state.pairs[i].vallen); + ptr+=entries[i].vallen; + } + } + + freeHSParse(&state); + PG_RETURN_POINTER(out); +} + +static char* +cpw(char *dst, char *src, int len) { + char *ptr = src; + + while(ptr-srcsize==0 ) { + out=palloc(1); + *out='\0'; + PG_FREE_IF_COPY(in,0); + PG_RETURN_CSTRING(out); + } + + buflen = ( 4 /* " */ + 2 /* => */ + 2 /*, */ )*in->size + + 2 /* esc */ * ( in->len - CALCDATASIZE(in->size,0) ); + + out=ptr=palloc(buflen); + for(i=0;isize;i++) { + *ptr++='"'; + ptr = cpw( ptr, base + entries[i].pos, entries[i].keylen ); + *ptr++='"'; + *ptr++='='; + *ptr++='>'; + if ( entries[i].valisnull ) { + *ptr++='N'; + *ptr++='U'; + *ptr++='L'; + *ptr++='L'; + } else { + *ptr++='"'; + ptr = cpw( ptr, base + entries[i].pos + entries[i].keylen, entries[i].vallen ); + *ptr++='"'; + } + + if ( i+1 != in->size ) { + *ptr++=','; + *ptr++=' '; + } + } + *ptr='\0'; + + PG_FREE_IF_COPY(in,0); + PG_RETURN_CSTRING(out); +} diff --git a/hstore_op.c b/hstore_op.c new file mode 100644 index 0000000..12f783c --- /dev/null +++ b/hstore_op.c @@ -0,0 +1,567 @@ +#include "hstore.h" +#include "utils/array.h" +#include "catalog/pg_type.h" +#include "funcapi.h" +#include +#include + + +static HEntry * +findkey(HStore *hs, char *key, int keylen) { + HEntry *StopLow = ARRPTR(hs); + HEntry *StopHigh = StopLow + hs->size; + HEntry *StopMiddle; + int difference; + char *base = STRPTR(hs); + + while (StopLow < StopHigh) { + StopMiddle = StopLow + (StopHigh - StopLow) / 2; + + if ( StopMiddle->keylen == keylen ) + difference=strncmp(base+StopMiddle->pos, key, StopMiddle->keylen); + else + difference=(StopMiddle->keylen > keylen) ? 1 : -1; + + if (difference == 0) + return StopMiddle; + else if (difference < 0) + StopLow = StopMiddle + 1; + else + StopHigh = StopMiddle; + } + + return NULL; +} + +PG_FUNCTION_INFO_V1(fetchval); +Datum fetchval(PG_FUNCTION_ARGS); +Datum +fetchval(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + text *key = PG_GETARG_TEXT_P(1); + HEntry *entry; + text *out; + + if ((entry=findkey(hs,VARDATA(key), VARSIZE(key)-VARHDRSZ))==NULL || entry->valisnull) { + PG_FREE_IF_COPY(hs,0); + PG_FREE_IF_COPY(key,1); + PG_RETURN_NULL(); + } + + out=palloc(VARHDRSZ+entry->vallen); + memcpy(VARDATA(out),STRPTR(hs) + entry->pos + entry->keylen, entry->vallen); + VARATT_SIZEP(out) = VARHDRSZ+entry->vallen; + + PG_FREE_IF_COPY(hs,0); + PG_FREE_IF_COPY(key,1); + PG_RETURN_POINTER(out); +} + +PG_FUNCTION_INFO_V1(exists); +Datum exists(PG_FUNCTION_ARGS); +Datum +exists(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + text *key = PG_GETARG_TEXT_P(1); + HEntry *entry; + + entry=findkey(hs,VARDATA(key), VARSIZE(key)-VARHDRSZ); + + PG_FREE_IF_COPY(hs,0); + PG_FREE_IF_COPY(key,1); + + PG_RETURN_BOOL(entry); +} + +PG_FUNCTION_INFO_V1(defined); +Datum defined(PG_FUNCTION_ARGS); +Datum +defined(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + text *key = PG_GETARG_TEXT_P(1); + HEntry *entry; + bool res; + + entry=findkey(hs,VARDATA(key), VARSIZE(key)-VARHDRSZ); + + res = ( entry && !entry->valisnull ) ? true : false; + + PG_FREE_IF_COPY(hs,0); + PG_FREE_IF_COPY(key,1); + + PG_RETURN_BOOL(res); +} + +PG_FUNCTION_INFO_V1(delete); +Datum delete(PG_FUNCTION_ARGS); +Datum +delete(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + text *key = PG_GETARG_TEXT_P(1); + HStore *out = palloc(hs->len); + char *ptrs, *ptrd; + HEntry *es, *ed; + + out->len=hs->len; + out->size=hs->size; /* temprorary! */ + + ptrs=STRPTR(hs); + es =ARRPTR(hs); + ptrd=STRPTR(out); + ed =ARRPTR(out); + + while( es - ARRPTR(hs) < hs->size ) { + if ( !(es->keylen == VARSIZE(key) - VARHDRSZ && strncmp(ptrs, VARDATA(key), es->keylen)==0) ) { + memcpy( ed, es, sizeof(HEntry) ); + memcpy( ptrd, ptrs, es->keylen + ( (es->valisnull) ? 0 : es->vallen ) ); + ed->pos = ptrd - STRPTR(out); + ptrd += es->keylen + ( (es->valisnull) ? 0 : es->vallen ); + ed++; + } + ptrs += es->keylen + ( (es->valisnull) ? 0 : es->vallen ); + es++; + } + + if ( ed - ARRPTR(out) != out->size ) { + int buflen=ptrd-STRPTR(out); + ptrd = STRPTR(out); + + out->size = ed - ARRPTR(out); + + memmove( STRPTR(out), ptrd, buflen); + out->len = CALCDATASIZE(out->size, buflen); + } + + + PG_FREE_IF_COPY(hs,0); + PG_FREE_IF_COPY(key,1); + + PG_RETURN_POINTER(out); +} + +PG_FUNCTION_INFO_V1(hs_concat); +Datum hs_concat(PG_FUNCTION_ARGS); +Datum +hs_concat(PG_FUNCTION_ARGS) { + HStore *s1 = PG_GETARG_HS(0); + HStore *s2 = PG_GETARG_HS(1); + HStore *out = palloc( s1->len + s2->len ); + char *ps1, *ps2, *pd; + HEntry *es1, *es2, *ed; + + out->len = s1->len + s2->len; + out->size = s1->size + s2->size; + + ps1=STRPTR(s1); + ps2=STRPTR(s2); + pd=STRPTR(out); + es1=ARRPTR(s1); + es2=ARRPTR(s2); + ed=ARRPTR(out); + + while( es1 - ARRPTR(s1) < s1->size && es2 - ARRPTR(s2) < s2->size ) { + int difference; + if ( es1->keylen == es2->keylen ) + difference=strncmp(ps1, ps2, es1->keylen); + else + difference=(es1->keylen > es2->keylen) ? 1 : -1; + + if ( difference == 0 ) { + memcpy( ed, es2, sizeof(HEntry) ); + memcpy( pd, ps2, es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ) ); + ed->pos = pd - STRPTR(out); + pd += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + ed++; + + ps1 += es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ); + es1++; + ps2 += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + es2++; + } else if ( difference > 0 ) { + memcpy( ed, es2, sizeof(HEntry) ); + memcpy( pd, ps2, es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ) ); + ed->pos = pd - STRPTR(out); + pd += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + ed++; + + ps2 += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + es2++; + } else { + memcpy( ed, es1, sizeof(HEntry) ); + memcpy( pd, ps1, es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ) ); + ed->pos = pd - STRPTR(out); + pd += es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ); + ed++; + + ps1 += es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ); + es1++; + } + } + + while( es1 - ARRPTR(s1) < s1->size ) { + memcpy( ed, es1, sizeof(HEntry) ); + memcpy( pd, ps1, es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ) ); + ed->pos = pd - STRPTR(out); + pd += es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ); + ed++; + + ps1 += es1->keylen + ( (es1->valisnull) ? 0 : es1->vallen ); + es1++; + } + + while( es2 - ARRPTR(s2) < s2->size ) { + memcpy( ed, es2, sizeof(HEntry) ); + memcpy( pd, ps2, es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ) ); + ed->pos = pd - STRPTR(out); + pd += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + ed++; + + ps2 += es2->keylen + ( (es2->valisnull) ? 0 : es2->vallen ); + es2++; + } + + if ( ed - ARRPTR(out) != out->size ) { + int buflen=pd-STRPTR(out); + pd = STRPTR(out); + + out->size = ed - ARRPTR(out); + + memmove( STRPTR(out), pd, buflen); + out->len = CALCDATASIZE(out->size, buflen); + } + + PG_FREE_IF_COPY(s1,0); + PG_FREE_IF_COPY(s2,1); + + PG_RETURN_POINTER(out); +} + +PG_FUNCTION_INFO_V1(tconvert); +Datum tconvert(PG_FUNCTION_ARGS); +Datum +tconvert(PG_FUNCTION_ARGS) { + text *key = PG_GETARG_TEXT_P(0); + text *val = PG_GETARG_TEXT_P(1); + int len; + HStore *out; + + len=CALCDATASIZE(1, VARSIZE(key) + VARSIZE(val) - 2*VARHDRSZ); + out = palloc(len); + out->len=len; + out->size=1; + + ARRPTR(out)->keylen = VARSIZE(key) - VARHDRSZ; + ARRPTR(out)->vallen = VARSIZE(val) - VARHDRSZ; + ARRPTR(out)->valisnull = false; + ARRPTR(out)->pos=0; + + memcpy( STRPTR(out), VARDATA(key), ARRPTR(out)->keylen ); + memcpy( STRPTR(out) + ARRPTR(out)->keylen, VARDATA(val), ARRPTR(out)->vallen ); + + PG_FREE_IF_COPY(key,0); + PG_FREE_IF_COPY(val,1); + + PG_RETURN_POINTER(out); +} + +PG_FUNCTION_INFO_V1(akeys); +Datum akeys(PG_FUNCTION_ARGS); +Datum +akeys(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + Datum *d; + ArrayType *a; + HEntry *ptr=ARRPTR(hs); + char *base=STRPTR(hs); + + d=(Datum*)palloc(sizeof(Datum)*(hs->size+1)); + while( ptr-ARRPTR(hs) < hs->size ) { + text *item=(text*)palloc(VARHDRSZ + ptr->keylen); + VARATT_SIZEP(item) = VARHDRSZ+ptr->keylen; + memcpy(VARDATA(item), base + ptr->pos, ptr->keylen); + d[ ptr-ARRPTR(hs) ] = PointerGetDatum(item); + ptr++; + } + + a = construct_array( + d, + hs->size, + TEXTOID, + -1, + false, + 'i' + ); + + ptr=ARRPTR(hs); + while( ptr-ARRPTR(hs) < hs->size ) { + pfree(DatumGetPointer(d[ ptr-ARRPTR(hs) ])); + ptr++; + } + + pfree(d); + PG_FREE_IF_COPY(hs,0); + + PG_RETURN_POINTER(a); +} + +PG_FUNCTION_INFO_V1(avals); +Datum avals(PG_FUNCTION_ARGS); +Datum +avals(PG_FUNCTION_ARGS) { + HStore *hs = PG_GETARG_HS(0); + Datum *d; + ArrayType *a; + HEntry *ptr=ARRPTR(hs); + char *base=STRPTR(hs); + + d=(Datum*)palloc(sizeof(Datum)*(hs->size+1)); + while( ptr-ARRPTR(hs) < hs->size ) { + int vallen = (ptr->valisnull) ? 0 : ptr->vallen; + text *item=(text*)palloc(VARHDRSZ + vallen); + VARATT_SIZEP(item) = VARHDRSZ+vallen; + memcpy(VARDATA(item), base + ptr->pos + ptr->keylen, vallen); + d[ ptr-ARRPTR(hs) ] = PointerGetDatum(item); + ptr++; + } + + a = construct_array( + d, + hs->size, + TEXTOID, + -1, + false, + 'i' + ); + + ptr=ARRPTR(hs); + while( ptr-ARRPTR(hs) < hs->size ) { + pfree(DatumGetPointer(d[ ptr-ARRPTR(hs) ])); + ptr++; + } + + pfree(d); + PG_FREE_IF_COPY(hs,0); + + PG_RETURN_POINTER(a); +} + +typedef struct { + HStore *hs; + int i; +} AKStore; + +static void +setup_firstcall(FuncCallContext *funcctx, HStore *hs) { + MemoryContext oldcontext; + AKStore *st; + + oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx); + + st=(AKStore*)palloc( sizeof(AKStore) ); + st->i=0; + st->hs = (HStore*)palloc(hs->len); + memcpy( st->hs, hs, hs->len ); + + funcctx->user_fctx = (void*)st; + MemoryContextSwitchTo(oldcontext); +} + +PG_FUNCTION_INFO_V1(skeys); +Datum skeys(PG_FUNCTION_ARGS); +Datum +skeys(PG_FUNCTION_ARGS) { + FuncCallContext *funcctx; + AKStore *st; + + if (SRF_IS_FIRSTCALL()) { + HStore *hs = PG_GETARG_HS(0); + funcctx = SRF_FIRSTCALL_INIT(); + setup_firstcall(funcctx, hs); + PG_FREE_IF_COPY(hs,0); + } + + funcctx = SRF_PERCALL_SETUP(); + st = (AKStore*)funcctx->user_fctx; + + if ( st->i < st->hs->size ) { + HEntry *ptr = &(ARRPTR(st->hs)[st->i]); + text *item=(text*)palloc(VARHDRSZ + ptr->keylen); + + VARATT_SIZEP(item) = VARHDRSZ+ptr->keylen; + memcpy(VARDATA(item), STRPTR(st->hs) + ptr->pos, ptr->keylen); + st->i++; + + SRF_RETURN_NEXT(funcctx, PointerGetDatum(item)); + } + + pfree( st->hs ); + pfree( st ); + + SRF_RETURN_DONE(funcctx); +} + +PG_FUNCTION_INFO_V1(svals); +Datum svals(PG_FUNCTION_ARGS); +Datum +svals(PG_FUNCTION_ARGS) { + FuncCallContext *funcctx; + AKStore *st; + + if (SRF_IS_FIRSTCALL()) { + HStore *hs = PG_GETARG_HS(0); + funcctx = SRF_FIRSTCALL_INIT(); + setup_firstcall(funcctx, hs); + PG_FREE_IF_COPY(hs,0); + } + + funcctx = SRF_PERCALL_SETUP(); + st = (AKStore*)funcctx->user_fctx; + + if ( st->i < st->hs->size ) { + HEntry *ptr = &(ARRPTR(st->hs)[st->i]); + + if ( ptr->valisnull ) { + ReturnSetInfo *rsi; + + st->i++; + (funcctx)->call_cntr++; + rsi = (ReturnSetInfo *) fcinfo->resultinfo; + rsi->isDone = ExprMultipleResult; + PG_RETURN_NULL(); + } else { + int vallen = ptr->vallen; + text *item=(text*)palloc(VARHDRSZ + vallen); + + VARATT_SIZEP(item) = VARHDRSZ+vallen; + memcpy(VARDATA(item), STRPTR(st->hs) + ptr->pos + ptr->keylen, vallen); + st->i++; + + SRF_RETURN_NEXT(funcctx, PointerGetDatum(item)); + } + } + + pfree( st->hs ); + pfree( st ); + + SRF_RETURN_DONE(funcctx); +} + +PG_FUNCTION_INFO_V1(hs_contains); +Datum hs_contains(PG_FUNCTION_ARGS); +Datum +hs_contains(PG_FUNCTION_ARGS) { + HStore *val = PG_GETARG_HS(0); + HStore *tmpl = PG_GETARG_HS(1); + bool res = true; + HEntry *te = ARRPTR(tmpl); + char *vv = STRPTR(val); + char *tv = STRPTR(tmpl); + + while(res && te-ARRPTR(tmpl) < tmpl->size) { + HEntry *entry = findkey(val, tv + te->pos, te->keylen); + if ( entry ) { + if ( ! te->valisnull ) { + if ( entry->valisnull || !( + te->vallen==entry->vallen && + strncmp( + vv + entry->pos + entry->keylen, + tv + te->pos + te->keylen, + te->vallen ) == 0 + ) ) + res=false; + } + } else + res = false; + te++; + } + + PG_FREE_IF_COPY(val,0); + PG_FREE_IF_COPY(tmpl,1); + + PG_RETURN_BOOL(res); +} + +PG_FUNCTION_INFO_V1(hs_contained); +Datum hs_contained(PG_FUNCTION_ARGS); +Datum +hs_contained(PG_FUNCTION_ARGS) { + PG_RETURN_DATUM( DirectFunctionCall2( + hs_contains, + PG_GETARG_DATUM(1), + PG_GETARG_DATUM(0) + )); +} + +PG_FUNCTION_INFO_V1(each); +Datum each(PG_FUNCTION_ARGS); +Datum +each(PG_FUNCTION_ARGS) { + FuncCallContext *funcctx; + AKStore *st; + + if (SRF_IS_FIRSTCALL()) { + TupleDesc tupdesc; + MemoryContext oldcontext; + HStore *hs = PG_GETARG_HS(0); + + funcctx = SRF_FIRSTCALL_INIT(); + oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx); + st=(AKStore*)palloc( sizeof(AKStore) ); + st->i=0; + st->hs = (HStore*)palloc(hs->len); + memcpy( st->hs, hs, hs->len ); + funcctx->user_fctx = (void*)st; + + tupdesc = RelationNameGetTupleDesc("hs_each"); + funcctx->slot = TupleDescGetSlot(tupdesc); + funcctx->attinmeta = TupleDescGetAttInMetadata(tupdesc); + + MemoryContextSwitchTo(oldcontext); + PG_FREE_IF_COPY(hs,0); + } + + funcctx = SRF_PERCALL_SETUP(); + st = (AKStore*)funcctx->user_fctx; + + if ( st->i < st->hs->size ) { + HEntry *ptr = &(ARRPTR(st->hs)[st->i]); + Datum res, dvalues[2]; + char nulls[] = {' ', ' '}; + text *item; + HeapTuple tuple; + + item=(text*)palloc(VARHDRSZ + ptr->keylen); + VARATT_SIZEP(item) = VARHDRSZ+ptr->keylen; + memcpy(VARDATA(item), STRPTR(st->hs) + ptr->pos, ptr->keylen); + dvalues[0] = PointerGetDatum(item); + + if ( ptr->valisnull ) { + dvalues[1]=(Datum)0; + nulls[1]='n'; + } else { + int vallen = ptr->vallen; + + item=(text*)palloc(VARHDRSZ + vallen); + VARATT_SIZEP(item) = VARHDRSZ+vallen; + memcpy(VARDATA(item), STRPTR(st->hs) + ptr->pos + ptr->keylen, vallen); + dvalues[1] = PointerGetDatum(item); + } + st->i++; + + tuple = heap_formtuple(funcctx->attinmeta->tupdesc, dvalues, nulls); + res = TupleGetDatum(funcctx->slot, tuple); + + pfree( DatumGetPointer(dvalues[0]) ); + if ( nulls[1] != 'n' ) + pfree( DatumGetPointer(dvalues[1]) ); + + SRF_RETURN_NEXT(funcctx, PointerGetDatum(res)); + } + + pfree( st->hs ); + pfree( st ); + + SRF_RETURN_DONE(funcctx); +} + + diff --git a/sql/hstore.sql b/sql/hstore.sql new file mode 100644 index 0000000..298ffb0 --- /dev/null +++ b/sql/hstore.sql @@ -0,0 +1,131 @@ +\set ECHO none +\i hstore.sql +set escape_string_warning=off; +\set ECHO all +--hstore; + +select ''::hstore; +select 'a=>b'::hstore; +select ' a=>b'::hstore; +select 'a =>b'::hstore; +select 'a=>b '::hstore; +select 'a=> b'::hstore; +select '"a"=>"b"'::hstore; +select ' "a"=>"b"'::hstore; +select '"a" =>"b"'::hstore; +select '"a"=>"b" '::hstore; +select '"a"=> "b"'::hstore; +select 'aa=>bb'::hstore; +select ' aa=>bb'::hstore; +select 'aa =>bb'::hstore; +select 'aa=>bb '::hstore; +select 'aa=> bb'::hstore; +select '"aa"=>"bb"'::hstore; +select ' "aa"=>"bb"'::hstore; +select '"aa" =>"bb"'::hstore; +select '"aa"=>"bb" '::hstore; +select '"aa"=> "bb"'::hstore; + +select 'aa=>bb, cc=>dd'::hstore; +select 'aa=>bb , cc=>dd'::hstore; +select 'aa=>bb ,cc=>dd'::hstore; +select 'aa=>bb, "cc"=>dd'::hstore; +select 'aa=>bb , "cc"=>dd'::hstore; +select 'aa=>bb ,"cc"=>dd'::hstore; +select 'aa=>"bb", cc=>dd'::hstore; +select 'aa=>"bb" , cc=>dd'::hstore; +select 'aa=>"bb" ,cc=>dd'::hstore; + +select 'aa=>null'::hstore; +select 'aa=>NuLl'::hstore; +select 'aa=>"NuLl"'::hstore; + +select '\\=a=>q=w'::hstore; +select '"=a"=>q\\=w'::hstore; +select '"\\"a"=>q>w'::hstore; +select '\\"a=>q"w'::hstore; + +select ''::hstore; +select ' '::hstore; + +-- -> operator + +select 'aa=>b, c=>d , b=>16'::hstore->'c'; +select 'aa=>b, c=>d , b=>16'::hstore->'b'; +select 'aa=>b, c=>d , b=>16'::hstore->'aa'; +select ('aa=>b, c=>d , b=>16'::hstore->'gg') is null; +select ('aa=>NULL, c=>d , b=>16'::hstore->'aa') is null; + +-- exists/defined + +select isexists('a=>NULL, b=>qq', 'a'); +select isexists('a=>NULL, b=>qq', 'b'); +select isexists('a=>NULL, b=>qq', 'c'); +select isdefined('a=>NULL, b=>qq', 'a'); +select isdefined('a=>NULL, b=>qq', 'b'); +select isdefined('a=>NULL, b=>qq', 'c'); + +-- delete + +select delete('a=>1 , b=>2, c=>3'::hstore, 'a'); +select delete('a=>null , b=>2, c=>3'::hstore, 'a'); +select delete('a=>1 , b=>2, c=>3'::hstore, 'b'); +select delete('a=>1 , b=>2, c=>3'::hstore, 'c'); +select delete('a=>1 , b=>2, c=>3'::hstore, 'd'); + +-- || +select 'aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'; +select 'aa=>1 , b=>2, cq=>3'::hstore || 'aq=>l'; +select 'aa=>1 , b=>2, cq=>3'::hstore || 'aa=>l'; +select 'aa=>1 , b=>2, cq=>3'::hstore || ''; +select ''::hstore || 'cq=>l, b=>g, fg=>f'; + +-- => +select 'a=>g, b=>c'::hstore || ( 'asd'=>'gf' ); +select 'a=>g, b=>c'::hstore || ( 'b'=>'gf' ); + +-- keys/values +select akeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); +select akeys('""=>1'); +select akeys(''); +select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); +select avals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL'); +select avals('""=>1'); +select avals(''); + +select * from skeys('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); +select * from skeys('""=>1'); +select * from skeys(''); +select * from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>f'); +select *, svals is null from svals('aa=>1 , b=>2, cq=>3'::hstore || 'cq=>l, b=>g, fg=>NULL'); +select * from svals('""=>1'); +select * from svals(''); + +select * from each('aaa=>bq, b=>NULL, ""=>1 '); + +-- @ +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL, c=>NULL'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>NULL, g=>NULL'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'g=>NULL'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>c'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b, c=>NULL'; +select 'a=>b, b=>1, c=>NULL'::hstore @ 'a=>b, c=>q'; + +CREATE TABLE testhstore (h hstore); +\copy testhstore from 'data/hstore.data' + +select count(*) from testhstore where h @ 'wait=>NULL'; +select count(*) from testhstore where h @ 'wait=>CC'; +select count(*) from testhstore where h @ 'wait=>CC, public=>t'; + +create index hidx on testhstore using gist(h); +set enable_seqscan=off; + +select count(*) from testhstore where h @ 'wait=>NULL'; +select count(*) from testhstore where h @ 'wait=>CC'; +select count(*) from testhstore where h @ 'wait=>CC, public=>t'; + +select count(*) from (select (each(h)).key from testhstore) as wow ; +select key, count(*) from (select (each(h)).key from testhstore) as wow group by key order by count desc, key;