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Commitdbaec70

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Rename and slightly redefine the default text search parser's "word"
categories, as per discussion. asciiword (formerly lword) is stillASCII-letters-only, and numword (formerly word) is still the most generalmixed-alpha-and-digits case. But word (formerly nlword) is nowany-group-of-letters-with-at-least-one-non-ASCII, rather than all-non-ASCII asbefore. This is no worse than before for parsing mixed Russian/English text,which seems to have been the design center for the original coding; and itshould simplify matters for parsing most European languages. In particularit will not be necessary for any language to accept strings containing digitsas being regular "words". The hyphenated-word categories are adjustedsimilarly.
1 parent344d0ca commitdbaec70

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10 files changed

+466
-449
lines changed

10 files changed

+466
-449
lines changed

‎doc/src/sgml/func.sgml‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.403 2007/10/22 20:13:37 tgl Exp $ -->
1+
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.404 2007/10/23 20:46:11 tgl Exp $ -->
22

33
<chapter id="functions">
44
<title>Functions and Operators</title>
@@ -7861,7 +7861,7 @@ CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple
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<entry><type>setof record</type></entry>
78627862
<entry>test a configuration</entry>
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<entry><literal>ts_debug('english', 'The Brightest supernovaes')</literal></entry>
7864-
<entry><literal>(lword,"Latin word",The,{english_stem},english_stem,{}) ...</literal></entry>
7864+
<entry><literal>(asciiword,"Word, all ASCII",The,{english_stem},english_stem,{}) ...</literal></entry>
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</row>
78667866
<row>
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<entry><literal><function>ts_lexize</function>(<replaceable class="PARAMETER">dict</replaceable> <type>regdictionary</>, <replaceable class="PARAMETER">token</replaceable> <type>text</>)</literal></entry>
@@ -7889,14 +7889,14 @@ CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple
78897889
<entry><type>setof record</type></entry>
78907890
<entry>get token types defined by parser</entry>
78917891
<entry><literal>ts_token_type('default')</literal></entry>
7892-
<entry><literal>(1,lword,"Latin word") ...</literal></entry>
7892+
<entry><literal>(1,asciiword,"Word, all ASCII") ...</literal></entry>
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</row>
78947894
<row>
78957895
<entry><literal><function>ts_token_type</function>(<replaceable class="PARAMETER">parser_oid</> <type>oid</>, OUT <replaceable class="PARAMETER">tokid</> <type>integer</>, OUT <replaceable class="PARAMETER">alias</> <type>text</>, OUT <replaceable class="PARAMETER">description</> <type>text</>)</literal></entry>
78967896
<entry><type>setof record</type></entry>
78977897
<entry>get token types defined by parser</entry>
78987898
<entry><literal>ts_token_type(3722)</literal></entry>
7899-
<entry><literal>(1,lword,"Latin word") ...</literal></entry>
7899+
<entry><literal>(1,asciiword,"Word, all ASCII") ...</literal></entry>
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</row>
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<row>
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<entry><literal><function>ts_stat</function>(<replaceable class="PARAMETER">sqlquery</replaceable> <type>text</>, <optional> <replaceable class="PARAMETER">weights</replaceable> <type>text</>, </optional> OUT <replaceable class="PARAMETER">word</replaceable> <type>text</>, OUT <replaceable class="PARAMETER">ndoc</replaceable> <type>integer</>, OUT <replaceable class="PARAMETER">nentry</replaceable> <type>integer</>)</literal></entry>

‎doc/src/sgml/textsearch.sgml‎

Lines changed: 189 additions & 176 deletions
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‎src/backend/snowball/Makefile‎

Lines changed: 8 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -2,7 +2,7 @@
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#
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# Makefile for src/backend/snowball
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#
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# $PostgreSQL: pgsql/src/backend/snowball/Makefile,v 1.3 2007/08/27 10:29:49 mha Exp $
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# $PostgreSQL: pgsql/src/backend/snowball/Makefile,v 1.4 2007/10/23 20:46:12 tgl Exp $
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#
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#-------------------------------------------------------------------------
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@@ -46,8 +46,9 @@ OBJS= dict_snowball.o api.o utilities.o \
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stem_UTF_8_swedish.o\
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stem_UTF_8_turkish.o
4848

49-
# second column is name of latin dictionary, if different
50-
# Note order dependency: use of some other language as latin dictionary
49+
# first column is language name and also name of dictionary for not-all-ASCII
50+
# words, second is name of dictionary for all-ASCII words
51+
# Note order dependency: use of some other language as ASCII dictionary
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# must come after creation of that language
5253
LANGUAGES=\
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danishdanish\
@@ -95,8 +96,8 @@ ifeq ($(enable_shared), yes)
9596
while [ "$$#" -gt 0 ] ;\
9697
do\
9798
lang=$$1; shift;\
98-
nonlatdictname=$$lang;\
99-
latdictname=$$1; shift;\
99+
nonascdictname=$$lang;\
100+
ascdictname=$$1; shift;\
100101
if [ -s $(srcdir)/stopwords/$${lang}.stop ] ; then\
101102
stop=", StopWords=$${lang}" ;\
102103
else\
@@ -106,8 +107,8 @@ ifeq ($(enable_shared), yes)
106107
sed -e "s#_LANGNAME_#$$lang#g" |\
107108
sed -e "s#_DICTNAME_#$${lang}_stem#g" |\
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sed -e "s#_CFGNAME_#$$lang#g" |\
109-
sed -e "s#_LATDICTNAME_#$${latdictname}_stem#g" |\
110-
sed -e "s#_NONLATDICTNAME_#$${nonlatdictname}_stem#g" |\
110+
sed -e "s#_ASCDICTNAME_#$${ascdictname}_stem#g" |\
111+
sed -e "s#_NONASCDICTNAME_#$${nonascdictname}_stem#g" |\
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sed -e "s#_STOPWORDS_#$$stop#g" ;\
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done >> $@
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else
Lines changed: 7 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
-- $PostgreSQL: pgsql/src/backend/snowball/snowball.sql.in,v 1.4 2007/09/03 02:30:43 tgl Exp $$
1+
-- $PostgreSQL: pgsql/src/backend/snowball/snowball.sql.in,v 1.5 2007/10/23 20:46:12 tgl Exp $$
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-- text search configuration for _LANGNAME_ language
44
CREATE TEXT SEARCH DICTIONARY _DICTNAME_
@@ -12,14 +12,15 @@ CREATE TEXT SEARCH CONFIGURATION _CFGNAME_
1212
COMMENT ON TEXT SEARCH CONFIGURATION _CFGNAME_ IS 'configuration for _LANGNAME_ language';
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1414
ALTER TEXT SEARCH CONFIGURATION _CFGNAME_ ADD MAPPING
15-
FOR email, url, host, sfloat, version, uri, file, float, int, uint
15+
FOR email, url, host, sfloat, version, uri, file, float, int, uint,
16+
numword, hword_numpart, numhword
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WITH simple;
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1819
ALTER TEXT SEARCH CONFIGURATION _CFGNAME_ ADD MAPPING
19-
FORlhword, lpart_hword, lword
20-
WITH_LATDICTNAME_;
20+
FORasciiword, hword_asciipart, asciihword
21+
WITH_ASCDICTNAME_;
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2223
ALTER TEXT SEARCH CONFIGURATION _CFGNAME_ ADD MAPPING
23-
FORhword, nlhword, nlpart_hword, nlword, word, part_hword
24-
WITH_NONLATDICTNAME_;
24+
FORword, hword_part, hword
25+
WITH_NONASCDICTNAME_;
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