[open-ils-commits] r7761 - trunk/Open-ILS/src/sql/Pg

[svn at svn.open-ils.org]

Author: miker
Date: 2007-09-05 11:32:51 -0400 (Wed, 05 Sep 2007)
New Revision: 7761

Modified:
   trunk/Open-ILS/src/sql/Pg/020.schema.functions.sql
Log:
stored procedures providing NACO normalization for controlled headings, esp authority records

Modified: trunk/Open-ILS/src/sql/Pg/020.schema.functions.sql
===================================================================
--- trunk/Open-ILS/src/sql/Pg/020.schema.functions.sql	2007-09-05 15:29:24 UTC (rev 7760)
+++ trunk/Open-ILS/src/sql/Pg/020.schema.functions.sql	2007-09-05 15:32:51 UTC (rev 7761)
@@ -16,6 +16,49 @@
 		);
 $$ LANGUAGE SQL STRICT IMMUTABLE;
 
+CREATE OR REPLACE FUNCTION public.naco_normalize( TEXT, TEXT ) RETURNS TEXT AS $func$
+	my $txt = lc(shift);
+	my $sf = shift;
+
+	$txt =~ s/\pM+//go;	# Remove diacritics
+
+	$txt =~ s/\xE6/AE/go;	# Convert ae digraph
+	$txt =~ s/\x{153}/OE/go;# Convert oe digraph
+	$txt =~ s/\xFE/TH/go;	# Convert Icelandic thorn
+
+	$txt =~ tr/\x{2070}\x{2071}\x{2072}\x{2073}\x{2074}\x{2075}\x{2076}\x{2077}\x{2078}\x{2079}\x{207A}\x{207B}/0123456789+-/;# Convert superscript numbers
+	$txt =~ tr/\x{2080}\x{2081}\x{2082}\x{2083}\x{2084}\x{2085}\x{2086}\x{2087}\x{2088}\x{2089}\x{208A}\x{208B}/0123456889+-/;# Convert subscript numbers
+
+	$txt =~ tr/\x{0251}\x{03B1}\x{03B2}\x{0262}\x{03B3}/AABGG/;	 	# Convert Latin and Greek
+	$txt =~ tr/\x{2113}\xF0\!\"\(\)\-\{\}\<\>\;\:\.\?\xA1\xBF\/\\\@\*\%\=\xB1\+\xAE\xA9\x{2117}\$\xA3\x{FFE1}\xB0\^\_\~\`/LD /;	# Convert Misc
+	$txt =~ tr/\'\[\]\|//d;							# Remove Misc
+
+	if ($sf =~ /^a/o) {
+		my $commapos = index($txt,',');
+		if ($commapos > -1) {
+			if ($commapos != length($txt) - 1) {
+				my @list = split /,/, $txt;
+				my $first = shift @list;
+				$txt = $first . ',' . join(' ', @list);
+			} else {
+				$txt =~ s/,/ /go;
+			}
+		}
+	} else {
+		$txt =~ s/,/ /go;
+	}
+
+	$txt =~ s/\s+/ /go;	# Compress multiple spaces
+	$txt =~ s/^\s+//o;	# Remove leading space
+	$txt =~ s/\s+$//o;	# Remove trailing space
+
+	return $txt;
+$func$ LANGUAGE 'plperlu' STRICT IMMUTABLE;
+
+CREATE OR REPLACE FUNCTION public.naco_normalize( TEXT ) RETURNS TEXT AS $func$
+	SELECT public.naco_normalize($1,'');
+$func$ LANGUAGE 'sql' STRICT IMMUTABLE;
+
 CREATE OR REPLACE FUNCTION public.call_number_dewey( TEXT ) RETURNS TEXT AS $$
 	my $txt = shift;
 	$txt =~ s/^\s+//o;