From d6c0bc0e4af0483608bc5e86806d7b48c3b8ced2 Mon Sep 17 00:00:00 2001
From: Jason Etheridge <jason@esilibrary.com>
Date: Mon, 20 Apr 2015 12:10:02 -0400
Subject: [PATCH] tweak migration_tools.insert_856_9

rename original to migration_tools.insert_856_9_conditional, since it has
behavior based on 856$u content.  New version simply adds a $9 if one does
not already exist (regardless of org unit referenced)

Signed-off-by: Jason Etheridge <jason@esilibrary.com>
---
 sql/base/base.sql |   33 ++++++++++++++++++++++++++++++++-
 1 files changed, 32 insertions(+), 1 deletions(-)

diff --git a/sql/base/base.sql b/sql/base/base.sql
index a724832..49d79db 100644
--- a/sql/base/base.sql
+++ b/sql/base/base.sql
@@ -1437,7 +1437,7 @@ END;
 $$ LANGUAGE plpgsql;
 
 
-CREATE OR REPLACE FUNCTION migration_tools.insert_856_9 (TEXT, TEXT) RETURNS TEXT AS $$
+CREATE OR REPLACE FUNCTION migration_tools.insert_856_9_conditional (TEXT, TEXT) RETURNS TEXT AS $$
 
   ## USAGE: UPDATE biblio.record_entry SET marc = migration_tools.insert_856_9(marc, 'ABC') WHERE [...];
 
@@ -1469,6 +1469,37 @@ CREATE OR REPLACE FUNCTION migration_tools.insert_856_9 (TEXT, TEXT) RETURNS TEX
 
 $$ LANGUAGE PLPERLU STABLE;
 
+CREATE OR REPLACE FUNCTION migration_tools.insert_856_9 (TEXT, TEXT) RETURNS TEXT AS $$
+
+  ## USAGE: UPDATE biblio.record_entry SET marc = migration_tools.insert_856_9(marc, 'ABC') WHERE [...];
+
+  my ($marcxml, $shortname) = @_;
+
+  use MARC::Record;
+  use MARC::File::XML;
+
+  my $xml = $marcxml;
+
+  eval {
+    my $marc = MARC::Record->new_from_xml($marcxml, 'UTF-8');
+
+    foreach my $field ( $marc->field('856') ) {
+      if ( ! $field->as_string('9') ) {
+        $field->add_subfields( '9' => $shortname );
+      }
+    }
+
+    $xml = $marc->as_xml_record;
+    $xml =~ s/^<\?.+?\?>$//mo;
+    $xml =~ s/\n//sgo;
+    $xml =~ s/>\s+</></sgo;
+  };
+
+  return $xml;
+
+$$ LANGUAGE PLPERLU STABLE;
+
+
 CREATE OR REPLACE FUNCTION migration_tools.change_call_number(copy_id BIGINT, new_label TEXT, cn_class BIGINT) RETURNS VOID AS $$
 
 DECLARE
-- 
1.7.2.5