From 0de96f82dc9af3de8aa840fb26563481479becd6 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 20 Jul 1998 02:45:03 +0000
Subject: [PATCH] Update fti README and stopwords.
---
contrib/fulltextindex/README | 3 +++
contrib/fulltextindex/fti.c | 5 +++++
2 files changed, 8 insertions(+)
diff --git a/contrib/fulltextindex/README b/contrib/fulltextindex/README
index 06ea57f53e7..3137e932566 100644
--- a/contrib/fulltextindex/README
+++ b/contrib/fulltextindex/README
@@ -27,6 +27,9 @@ the fti-table and the orig-table, we can get the actual rows we want
(this can also be done by using subselects, and maybe there're other
ways too).
+The trigger code also allows an array called StopWords, that prevents
+certain words from being indexed.
+
As an example we take the previous query, where we assume we have all
sub-strings in the table 'cds-fti':
diff --git a/contrib/fulltextindex/fti.c b/contrib/fulltextindex/fti.c
index 1131b6078b1..8d14f8f55c9 100644
--- a/contrib/fulltextindex/fti.c
+++ b/contrib/fulltextindex/fti.c
@@ -70,9 +70,11 @@ bool new_tuple = false;
/* THIS LIST MUST BE IN SORTED ORDER, A BINARY SEARCH IS USED!!!! */
char *StopWords[] = { /* list of words to skip in indexing */
+#ifdef SAMPLE_STOP_WORDS
"no"
"the",
"yes",
+#endif
};
/* stuff for caching query-plans, stolen from contrib/spi/\*.c */
@@ -331,6 +333,9 @@ is_stopword(char *text)
StopLow = &StopWords[0]; /* initialize stuff for binary search */
StopHigh = endof(StopWords);
+ if (lengthof(StopWords) == 0)
+ return false;
+
while (StopLow <= StopHigh)
{
StopMiddle = StopLow + (StopHigh - StopLow) / 2;
--
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