From 89f8e98846f4defbde632abafdb2a019151d6088 Mon Sep 17 00:00:00 2001
From: Mike Rylander <mrylander@gmail.com>
Date: Wed, 30 Apr 2014 12:58:11 -0400
Subject: [PATCH] LP#1312945: auth-auth linking: cache less agressively and
 look for all links

There was a logic inversion that was causing miss-use of a per-
record cache mechanism.  I remove that entirely, as it's not helpful
in practice.

Also, after finding one use of a linked field we moved on to the
next, though it is possible for more than one link to exist for
different uses of a name, say.  Now we'll loop through all fields
to find all possible linkages.

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Srey Seng <sreyseng@gmail.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
---
 .../authority_authority_linker.pl.in          | 45 +++++++++----------
 1 file changed, 22 insertions(+), 23 deletions(-)

diff --git a/Open-ILS/src/support-scripts/authority_authority_linker.pl.in b/Open-ILS/src/support-scripts/authority_authority_linker.pl.in
index 5f00f2be9b..d9ba725718 100755
--- a/Open-ILS/src/support-scripts/authority_authority_linker.pl.in
+++ b/Open-ILS/src/support-scripts/authority_authority_linker.pl.in
@@ -71,9 +71,10 @@ sub marcxml_eg {
 }
 
 sub matchable_string {
-    my ($field, $sf_list) = @_;
+    my ($field, $sf_list, $joiner) = @_;
+    $joiner ||= ' ';
 
-    return join("", map { $field->subfield($_) } split "", $sf_list);
+    return join($joiner, map { $field->subfield($_) } split "", $sf_list);
 }
 
 # ########### main
@@ -148,19 +149,17 @@ my $problems = 0;
 while (my ($src, $links) = $sth->fetchrow_array) {
     print "src: $src\n" if $options{debug};
 
-    my $per_src_target_cache = {};
     try {
         my $src_rec = $e->retrieve_authority_record_entry($src) or
             die $e->die_event;
         my $src_marc = MARC::Record->new_from_xml($src_rec->marc);
 
-        LINK: for my $link (split ';', $links) {
+        for my $link (split ';', $links) {
             my ($target, $field_id) = split ',', $link;
 
             print "target: $target, field_id: $field_id\n" if $options{debug};
 
-            my $target_rec = ($per_src_target_cache->{$src} ||=
-                $e->retrieve_authority_record_entry($target)) or
+            my $target_rec = $e->retrieve_authority_record_entry($target) or
                     die $e->die_event;
             my $target_marc = MARC::Record->new_from_xml($target_rec->marc);
             my $cni = $target_marc->field('003')->data;
@@ -169,31 +168,31 @@ while (my ($src, $links) = $sth->fetchrow_array) {
 
             for my $field ($src_marc->field($acsaf->tag)) {
                 my $src_string = matchable_string(
-                    $field, $acsaf->main_entry->display_sf_list
+                    $field, $acsaf->main_entry->display_sf_list, $acsaf->main_entry->joiner
                 );
 
                 print("at field ", $acsaf->id, " (", $acsaf->tag,
                     "), trying to match '$src_string'...\n") if $options{debug};
 
-                for my $tfield ($target_marc->field($acsaf->main_entry->tag)) {
-                    my $target_string = matchable_string(
-                        $tfield, $acsaf->main_entry->display_sf_list
-                    );
-
-                    if ($target_string eq $src_string) {
-                        print "got a match ...\n" if $options{debug};
-                        $field->update('0' => "($cni)$target");
-                        $src_rec->marc(marcxml_eg($src_marc->as_xml_record));
-
-                        $e->xact_begin;
-                        $e->update_authority_record_entry($src_rec) or
-                            die $e->die_event;
-                        $e->xact_commit;
-                        next LINK;
-                    }
+                my ($tfield) = $target_marc->field($acsaf->main_entry->tag);
+                my $target_string = matchable_string(
+                    $tfield, $acsaf->main_entry->display_sf_list, $acsaf->main_entry->joiner
+                );
+
+                if ($target_string eq $src_string) {
+                    print "got a match ...\n" if $options{debug};
+                    $field->update('0' => "($cni)$target");
                 }
             }
         }
+
+        $src_rec->marc(marcxml_eg($src_marc->as_xml_record));
+
+        $e->xact_begin;
+        $e->update_authority_record_entry($src_rec) or
+            die $e->die_event;
+        $e->xact_commit;
+
     } otherwise {
         my $err = shift;
         print STDERR "\nRecord # $src : ",
-- 
2.43.2