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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 1651815b8008de170e8e600dcacc17521d765482ea8f074ae82cfa870d8bb7fb:


# 2014 Dec 20
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# Tests focusing on custom tokenizers that support synonyms.
#

source [file join [file dirname [info script]] fts5_common.tcl]
set testprefix fts5synonym

# If SQLITE_ENABLE_FTS5 is defined, omit this file.
ifcapable !fts5 {
  finish_test
  return
}

proc tcl_create {args} { return "tcl_tokenize" }

foreach_detail_mode $testprefix {

#-------------------------------------------------------------------------
# Warm body test for the code in fts5_tcl.c.
#
fts5_tclnum_register db
do_execsql_test 1.0 {
  CREATE VIRTUAL TABLE ft USING fts5(x, tokenize = "tclnum document", detail=%DETAIL%);
  INSERT INTO ft VALUES('abc def ghi');
  INSERT INTO ft VALUES('jkl mno pqr');
  SELECT rowid, x FROM ft WHERE ft MATCH 'def';
  SELECT x, rowid FROM ft WHERE ft MATCH 'pqr';
} {1 {abc def ghi} {jkl mno pqr} 2}

#-------------------------------------------------------------------------
# Test a tokenizer that supports synonyms by adding extra entries to the
# FTS index.
#
reset_db
fts5_tclnum_register db

do_execsql_test 2.0 {
  CREATE VIRTUAL TABLE ft USING fts5(
      x, tokenize = "tclnum document", detail=%DETAIL%
  );
  INSERT INTO ft VALUES('one two three');
  INSERT INTO ft VALUES('four five six');
  INSERT INTO ft VALUES('eight nine ten');
} {}

foreach {tn expr res} {
  1 "3" 1
  2 "eight OR 8 OR 5" {2 3}
  3 "10" {}
  4 "1*" {1}
  5 "1 + 2" {1}
} {
  if {![fts5_expr_ok $expr ft]} continue
  do_execsql_test 2.1.$tn {
    SELECT rowid FROM ft WHERE ft MATCH $expr
  } $res
}

#-------------------------------------------------------------------------
# Test some broken tokenizers:
#
#   3.1.*: A tokenizer that declares the very first token to be colocated.
#
#   3.2.*: A tokenizer that reports two identical tokens at the same position.
#          This is allowed.
#
reset_db
sqlite3_fts5_create_tokenizer db tcl tcl_create
proc tcl_tokenize {tflags text} {
  set bColo 1
  foreach {w iStart iEnd} [fts5_tokenize_split $text] {
    if {$bColo} {
      sqlite3_fts5_token -colo $w $iStart $iEnd
      set bColo 0
    } {
      sqlite3_fts5_token $w $iStart $iEnd
    }
  }
}
do_execsql_test 3.1.0 {
  CREATE VIRTUAL TABLE ft USING fts5(x, tokenize = tcl);
  INSERT INTO ft VALUES('one two three');
  CREATE VIRTUAL TABLE vv USING fts5vocab(ft, row);
  SELECT * FROM vv;
} {
  one 1 1   three 1 1   two 1 1
}

do_execsql_test 3.1.1 {
  INSERT INTO ft(ft) VALUES('integrity-check');
} {}

proc tcl_tokenize {tflags text} {
  foreach {w iStart iEnd} [fts5_tokenize_split $text] {
    sqlite3_fts5_token $w $iStart $iEnd
  }
}

do_execsql_test 3.1.2 {
  SELECT rowid FROM ft WHERE ft MATCH 'one two three'
} {1}

reset_db
sqlite3_fts5_create_tokenizer db tcl tcl_create
proc tcl_tokenize {tflags text} {
  foreach {w iStart iEnd} [fts5_tokenize_split $text] {
    sqlite3_fts5_token $w $iStart $iEnd
    sqlite3_fts5_token -colo $w $iStart $iEnd
  }
}
do_execsql_test 3.2.0 {
  CREATE VIRTUAL TABLE ft USING fts5(x, tokenize = tcl);
  INSERT INTO ft VALUES('one one two three');
  CREATE VIRTUAL TABLE vv USING fts5vocab(ft, row);
  SELECT * FROM vv;
} {
  one 1 4   three 1 2   two 1 2
}
do_execsql_test 3.2.1 {
  SELECT rowid FROM ft WHERE ft MATCH 'one';
} {1}
do_execsql_test 3.2.2 {
  SELECT rowid FROM ft WHERE ft MATCH 'one two three';
} {1}
do_execsql_test 3.2.3 {
  SELECT rowid FROM ft WHERE ft MATCH 'one + one + two + three';
} {1}
do_execsql_test 3.2.4 {
  SELECT rowid FROM ft WHERE ft MATCH 'one two two three';
} {1}
do_execsql_test 3.2.5 {
  SELECT rowid FROM ft WHERE ft MATCH 'one + two + two + three';
} {}

#-------------------------------------------------------------------------
# Check that expressions with synonyms can be parsed and executed.
#
reset_db
fts5_tclnum_register db

foreach {tn expr res} {
  1  {abc}                           {"abc"}
  2  {one}                           {"one"|"i"|"1"}
  3  {3}                             {"3"|"iii"|"three"}
  4  {3*}                            {"3" *}
} {
  do_execsql_test 4.1.$tn {
    SELECT fts5_expr($expr, 'tokenize=tclnum')
  } [list $res]
}

do_execsql_test 4.2.1 {
  CREATE VIRTUAL TABLE xx USING fts5(x, tokenize=tclnum, detail=%DETAIL%);
  INSERT INTO xx VALUES('one two');
  INSERT INTO xx VALUES('three four');
}

do_execsql_test 4.2.2 {
  SELECT rowid FROM xx WHERE xx MATCH '2'
} {1}

do_execsql_test 4.2.3 {
  SELECT rowid FROM xx WHERE xx MATCH '3'
} {2}

do_test 5.0 {
  execsql { 
    CREATE VIRTUAL TABLE t1 USING fts5(a, b, tokenize=tclnum, detail=%DETAIL%)
  }
  foreach {rowid a b} {
    1 {four v 4 i three} {1 3 five five 4 one}
    2 {5 1 3 4 i} {2 2 v two 4}
    3 {5 i 5 2 four 4 1} {iii ii five two 1}
    4 {ii four 4 one 5 three five} {one 5 1 iii 4 3}
    5 {three i v i four 4 1} {ii five five five iii}
    6 {4 2 ii two 2 iii} {three 1 four 4 iv 1 iv}
    7 {ii ii two three 2 5} {iii i ii iii iii one one}
    8 {2 ii i two 3 three 2} {two iv v iii 3 five}
    9 {i 2 iv 3 five four v} {iii 4 three i three ii 1}
  } {
    execsql { INSERT INTO t1(rowid, a, b) VALUES($rowid, $a, $b) }
  }
} {}


foreach {tn q res} {
  1 {one} {
    1 {four v 4 [i] three} {[1] 3 five five 4 [one]}
    2 {5 [1] 3 4 [i]} {2 2 v two 4}
    3 {5 [i] 5 2 four 4 [1]} {iii ii five two [1]}
    4 {ii four 4 [one] 5 three five} {[one] 5 [1] iii 4 3}
    5 {three [i] v [i] four 4 [1]} {ii five five five iii}
    6 {4 2 ii two 2 iii} {three [1] four 4 iv [1] iv}
    7 {ii ii two three 2 5} {iii [i] ii iii iii [one] [one]}
    8 {2 ii [i] two 3 three 2} {two iv v iii 3 five}
    9 {[i] 2 iv 3 five four v} {iii 4 three [i] three ii [1]}
  }
  2 {five four} {
    1 {[four] [v] [4] i three} {1 3 [five] [five] [4] one}
    2 {[5] 1 3 [4] i} {2 2 [v] two [4]}
    3 {[5] i [5] 2 [four] [4] 1} {iii ii [five] two 1}
    4 {ii [four] [4] one [5] three [five]} {one [5] 1 iii [4] 3}
    5 {three i [v] i [four] [4] 1} {ii [five] [five] [five] iii}
    8 {2 ii i two 3 three 2} {two [iv] [v] iii 3 [five]}
    9 {i 2 [iv] 3 [five] [four] [v]} {iii [4] three i three ii 1}
  }
  3 {one OR two OR iii OR 4 OR v} {
    1 {[four] [v] [4] [i] [three]} {[1] [3] [five] [five] [4] [one]}
    2 {[5] [1] [3] [4] [i]} {[2] [2] [v] [two] [4]}
    3 {[5] [i] [5] [2] [four] [4] [1]} {[iii] [ii] [five] [two] [1]}
    4 {[ii] [four] [4] [one] [5] [three] [five]} {[one] [5] [1] [iii] [4] [3]}
    5 {[three] [i] [v] [i] [four] [4] [1]} {[ii] [five] [five] [five] [iii]}
    6 {[4] [2] [ii] [two] [2] [iii]} {[three] [1] [four] [4] [iv] [1] [iv]}
    7 {[ii] [ii] [two] [three] [2] [5]} {[iii] [i] [ii] [iii] [iii] [one] [one]}
    8 {[2] [ii] [i] [two] [3] [three] [2]} {[two] [iv] [v] [iii] [3] [five]}
    9 {[i] [2] [iv] [3] [five] [four] [v]} {[iii] [4] [three] [i] [three] [ii] [1]}
  }

  4 {5 + 1} {
    2 {[5 1] 3 4 i} {2 2 v two 4} 
    3 {[5 i] 5 2 four 4 1} {iii ii five two 1} 
    4 {ii four 4 one 5 three five} {one [5 1] iii 4 3} 
    5 {three i [v i] four 4 1} {ii five five five iii}
  }

  5 {one + two + three} {
    7 {ii ii two three 2 5} {iii [i ii iii] iii one one}
    8 {2 ii [i two 3] three 2} {two iv v iii 3 five}
  }

  6 {"v v"} {
    1 {four v 4 i three} {1 3 [five five] 4 one}
    5 {three i v i four 4 1} {ii [five five five] iii}
  }
} {
  if {![fts5_expr_ok $q t1]} continue
  do_execsql_test 5.1.$tn {
    SELECT rowid, highlight(t1, 0, '[', ']'), highlight(t1, 1, '[', ']')
    FROM t1 WHERE t1 MATCH $q
  } $res
}

# Test that the xQueryPhrase() API works with synonyms.
#
proc mit {blob} {
  set scan(littleEndian) i*
  set scan(bigEndian) I*
  binary scan $blob $scan($::tcl_platform(byteOrder)) r
  return $r
}
db func mit mit
sqlite3_fts5_register_matchinfo db

foreach {tn q res} {
  1 {one} {
      1 {1 11 7 2 12 6}     2 {2 11 7 0 12 6} 
      3 {2 11 7 1 12 6}     4 {1 11 7 2 12 6} 
      5 {3 11 7 0 12 6}     6 {0 11 7 2 12 6} 
      7 {0 11 7 3 12 6}     8 {1 11 7 0 12 6} 
      9 {1 11 7 2 12 6}
  }
} {
  do_execsql_test 5.2.$tn {
    SELECT rowid, mit(matchinfo(t1, 'x')) FROM t1 WHERE t1 MATCH $q
  } $res
}

#-------------------------------------------------------------------------
# Test terms with more than 4 synonyms.
#
reset_db
sqlite3_fts5_create_tokenizer db tcl tcl_create
proc tcl_tokenize {tflags text} {
  foreach {w iStart iEnd} [fts5_tokenize_split $text] {
    sqlite3_fts5_token $w $iStart $iEnd
    if {$tflags=="query" && [string length $w]==1} {
      for {set i 2} {$i<=10} {incr i} {
        sqlite3_fts5_token -colo [string repeat $w $i] $iStart $iEnd
      }
    }
  }
}

do_execsql_test 6.0.1 {
  CREATE VIRTUAL TABLE t1 USING fts5(x, tokenize=tcl, detail=%DETAIL%);
  INSERT INTO t1 VALUES('yy xx qq');
  INSERT INTO t1 VALUES('yy xx xx');
}
if {[fts5_expr_ok "NEAR(y q)" t1]} {
  do_execsql_test 6.0.2 {
    SELECT * FROM t1 WHERE t1 MATCH 'NEAR(y q)';
  } {{yy xx qq}}
}

do_test 6.0.3 {
  execsql { 
    CREATE VIRTUAL TABLE t2 USING fts5(a, b, tokenize=tcl, detail=%DETAIL%)
  }
  foreach {rowid a b} {
    1 {yyyy vvvvv qq oo yyyyyy vvvv eee} {ffff uu r qq aaaa}
    2 {ww oooooo bbbbb ssssss mm} {ffffff yy iiii rr s ccc qqqqq}
    3 {zzzz llll gggggg cccc uu} {hhhhhh aaaa ppppp rr ee jjjj}
    4 {r f i rrrrrr ww hhh} {aa yyy t x aaaaa ii}
    5 {fffff mm vvvv ooo ffffff kkkk tttt} {cccccc bb e zzz d n}
    6 {iii dddd hh qqqq ddd ooo} {ttt d c b aaaaaa qqqq}
    7 {jjjj rrrr v zzzzz u tt t} {ppppp pp dddd mm hhh uuu}
    8 {gggg rrrrrr kkkk vvvv gggg jjjjjj b} {dddddd jj r w cccc wwwwww ss}
    9 {kkkkk qqq oooo e tttttt mmm} {e ss qqqqqq hhhh llllll gg}
  } {
    execsql { INSERT INTO t2(rowid, a, b) VALUES($rowid, $a, $b) }
  }
} {}

foreach {tn q res} {
  1 {a} {
    1 {yyyy vvvvv qq oo yyyyyy vvvv eee} {ffff uu r qq [aaaa]}
    3 {zzzz llll gggggg cccc uu} {hhhhhh [aaaa] ppppp rr ee jjjj}
    4 {r f i rrrrrr ww hhh} {[aa] yyy t x [aaaaa] ii}
    6 {iii dddd hh qqqq ddd ooo} {ttt d c b [aaaaaa] qqqq}
  }

  2 {a AND q} {
    1 {yyyy vvvvv [qq] oo yyyyyy vvvv eee} {ffff uu r [qq] [aaaa]}
    6 {iii dddd hh [qqqq] ddd ooo} {ttt d c b [aaaaaa] [qqqq]}
  }

  3 {o OR (q AND a)} {
    1 {yyyy vvvvv [qq] [oo] yyyyyy vvvv eee} {ffff uu r [qq] [aaaa]}
    2 {ww [oooooo] bbbbb ssssss mm} {ffffff yy iiii rr s ccc qqqqq}
    5 {fffff mm vvvv [ooo] ffffff kkkk tttt} {cccccc bb e zzz d n}
    6 {iii dddd hh [qqqq] ddd [ooo]} {ttt d c b [aaaaaa] [qqqq]}
    9 {kkkkk qqq [oooo] e tttttt mmm} {e ss qqqqqq hhhh llllll gg}
  }

  4 {NEAR(q y, 20)} {
    1 {[yyyy] vvvvv [qq] oo [yyyyyy] vvvv eee} {ffff uu r qq aaaa}
    2 {ww oooooo bbbbb ssssss mm} {ffffff [yy] iiii rr s ccc [qqqqq]}
  }
} {
  if {![fts5_expr_ok $q t2]} continue

  do_execsql_test 6.1.$tn.asc {
    SELECT rowid, highlight(t2, 0, '[', ']'), highlight(t2, 1, '[', ']')
    FROM t2 WHERE t2 MATCH $q
  } $res

  set res2 [list]
  foreach {rowid a b} $res {
    set res2 [concat [list $rowid $a $b] $res2]
  }

  do_execsql_test 6.1.$tn.desc {
    SELECT rowid, highlight(t2, 0, '[', ']'), highlight(t2, 1, '[', ']')
    FROM t2 WHERE t2 MATCH $q ORDER BY rowid DESC
  } $res2
}

do_execsql_test 6.2.1 {
  INSERT INTO t2(rowid, a, b) VALUES(13,
      'x xx xxx xxxx xxxxx xxxxxx xxxxxxx', 'y yy yyy yyyy yyyyy yyyyyy yyyyyyy'
  );
  SELECT rowid, highlight(t2, 0, '<', '>'), highlight(t2, 1, '(', ')')
  FROM t2 WHERE t2 MATCH 'x OR y'
} {
  1 {<yyyy> vvvvv qq oo <yyyyyy> vvvv eee} {ffff uu r qq aaaa}
  2 {ww oooooo bbbbb ssssss mm} {ffffff (yy) iiii rr s ccc qqqqq}
  4 {r f i rrrrrr ww hhh} {aa (yyy) t (x) aaaaa ii}
  13 {<x> <xx> <xxx> <xxxx> <xxxxx> <xxxxxx> <xxxxxxx>}
     {(y) (yy) (yyy) (yyyy) (yyyyy) (yyyyyy) (yyyyyyy)}
}

#-------------------------------------------------------------------------
# Test that the xColumnSize() API is not confused by colocated tokens.
#
reset_db
sqlite3_fts5_create_tokenizer db tcl tcl_create
fts5_aux_test_functions db
proc tcl_tokenize {tflags text} {
  foreach {w iStart iEnd} [fts5_tokenize_split $text] {
    sqlite3_fts5_token $w $iStart $iEnd
    if {[string length $w]==1} {
      for {set i 2} {$i<=10} {incr i} {
        sqlite3_fts5_token -colo [string repeat $w $i] $iStart $iEnd
      }
    }
  }
}

do_execsql_test 7.0.1 {
  CREATE VIRTUAL TABLE t1 USING fts5(a, b, columnsize=1, tokenize=tcl, detail=%DETAIL%);
  INSERT INTO t1 VALUES('0 2 3', '4 5 6 7');
  INSERT INTO t1 VALUES('8 9', '0 0 0 0 0 0 0 0 0 0');
  SELECT fts5_test_columnsize(t1) FROM t1 WHERE t1 MATCH '000 AND 00 AND 0';
} {{3 4} {2 10}}

do_execsql_test 7.0.2 {
  INSERT INTO t1(t1) VALUES('integrity-check');
}

do_execsql_test 7.1.1 {
  CREATE VIRTUAL TABLE t2 USING fts5(a, b, columnsize=0, tokenize=tcl, detail=%DETAIL%);
  INSERT INTO t2 VALUES('0 2 3', '4 5 6 7');
  INSERT INTO t2 VALUES('8 9', '0 0 0 0 0 0 0 0 0 0');
  SELECT fts5_test_columnsize(t2) FROM t2 WHERE t2 MATCH '000 AND 00 AND 0';
} {{3 4} {2 10}}

do_execsql_test 7.1.2 {
  INSERT INTO t2(t2) VALUES('integrity-check');
}

} ;# foreach_detail_mode

finish_test