From 9eff9a28b617f77b7cf488319b2f6e1399a8143e Mon Sep 17 00:00:00 2001
From: Dan Scott <dscott@laurentian.ca>
Date: Thu, 13 Oct 2011 11:49:45 -0400
Subject: [PATCH] Fix located URI merging in action.merge_record_assets()
Perhaps due to the unexpected results of the XPath expression, which
returns a count of nodes for subfields, etc, rather than just a count of
the number of 856 datafields, NULL was being concatenated onto a string
- which of course made the string NULL.
Use COALESCE() to prevent the NULLness from spreading and enable
action.merge_record_assets() to do the right thing.
Signed-off-by: Dan Scott <dscott@laurentian.ca>
Signed-off-by: Mike Rylander <mrylander@gmail.com>
---
Open-ILS/src/sql/Pg/999.functions.global.sql | 6 +-
.../XXXX.schema.asset_merge_record_assets.sql | 168 +++++++++++++++++++++
2 files changed, 173 insertions(+), 1 deletion(-)
create mode 100644 Open-ILS/src/sql/Pg/upgrade/XXXX.schema.asset_merge_record_assets.sql
diff --git a/Open-ILS/src/sql/Pg/999.functions.global.sql b/Open-ILS/src/sql/Pg/999.functions.global.sql
index 25dfb6aeac..ca108f1008 100644
--- a/Open-ILS/src/sql/Pg/999.functions.global.sql
+++ b/Open-ILS/src/sql/Pg/999.functions.global.sql
@@ -980,6 +980,8 @@ BEGIN
IF uri_count > 0 THEN
+ -- This returns more nodes than you might expect:
+ -- 7 instead of 1 for an 856 with $u $y $9
SELECT COUNT(*) INTO counter
FROM oils_xpath_table(
'id',
@@ -1017,7 +1019,9 @@ BEGIN
'id=' || source_record
) as t(id int,ind1 text, ind2 text,subfield text,data text);
- uri_text := uri_text || uri_datafield;
+ -- As most of the results will be NULL, protect against NULLifying
+ -- the valid content that we do generate
+ uri_text := uri_text || COALESCE(uri_datafield, '');
END LOOP;
IF uri_text <> '' THEN
diff --git a/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.asset_merge_record_assets.sql b/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.asset_merge_record_assets.sql
new file mode 100644
index 0000000000..619adc925f
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.asset_merge_record_assets.sql
@@ -0,0 +1,168 @@
+-- Evergreen DB patch XXXX.schema.asset_merge_record_assets.sql
+--
+-- FIXME: insert description of change, if needed
+--
+BEGIN;
+
+
+-- check whether patch can be applied
+SELECT evergreen.upgrade_deps_block_check('XXXX', :eg_version);
+
+-- FIXME: add/check SQL statements to perform the upgrade
+
+CREATE OR REPLACE FUNCTION asset.merge_record_assets( target_record BIGINT, source_record BIGINT ) RETURNS INT AS $func$
+DECLARE
+ moved_objects INT := 0;
+ source_cn asset.call_number%ROWTYPE;
+ target_cn asset.call_number%ROWTYPE;
+ metarec metabib.metarecord%ROWTYPE;
+ hold action.hold_request%ROWTYPE;
+ ser_rec serial.record_entry%ROWTYPE;
+ uri_count INT := 0;
+ counter INT := 0;
+ uri_datafield TEXT;
+ uri_text TEXT := '';
+BEGIN
+
+ -- move any 856 entries on records that have at least one MARC-mapped URI entry
+ SELECT INTO uri_count COUNT(*)
+ FROM asset.uri_call_number_map m
+ JOIN asset.call_number cn ON (m.call_number = cn.id)
+ WHERE cn.record = source_record;
+
+ IF uri_count > 0 THEN
+
+ -- This returns more nodes than you might expect:
+ -- 7 instead of 1 for an 856 with $u $y $9
+ SELECT COUNT(*) INTO counter
+ FROM oils_xpath_table(
+ 'id',
+ 'marc',
+ 'biblio.record_entry',
+ '//*[@tag="856"]',
+ 'id=' || source_record
+ ) as t(i int,c text);
+
+ FOR i IN 1 .. counter LOOP
+ SELECT '<datafield xmlns="http://www.loc.gov/MARC21/slim"' ||
+ ' tag="856"' ||
+ ' ind1="' || FIRST(ind1) || '"' ||
+ ' ind2="' || FIRST(ind2) || '">' ||
+ array_to_string(
+ array_accum(
+ '<subfield code="' || subfield || '">' ||
+ regexp_replace(
+ regexp_replace(
+ regexp_replace(data,'&','&','g'),
+ '>', '>', 'g'
+ ),
+ '<', '<', 'g'
+ ) || '</subfield>'
+ ), ''
+ ) || '</datafield>' INTO uri_datafield
+ FROM oils_xpath_table(
+ 'id',
+ 'marc',
+ 'biblio.record_entry',
+ '//*[@tag="856"][position()=' || i || ']/@ind1|' ||
+ '//*[@tag="856"][position()=' || i || ']/@ind2|' ||
+ '//*[@tag="856"][position()=' || i || ']/*/@code|' ||
+ '//*[@tag="856"][position()=' || i || ']/*[@code]',
+ 'id=' || source_record
+ ) as t(id int,ind1 text, ind2 text,subfield text,data text);
+
+ -- As most of the results will be NULL, protect against NULLifying
+ -- the valid content that we do generate
+ uri_text := uri_text || COALESCE(uri_datafield, '');
+ END LOOP;
+
+ IF uri_text <> '' THEN
+ UPDATE biblio.record_entry
+ SET marc = regexp_replace(marc,'(</[^>]*record>)', uri_text || E'\\1')
+ WHERE id = target_record;
+ END IF;
+
+ END IF;
+
+ -- Find and move metarecords to the target record
+ SELECT INTO metarec *
+ FROM metabib.metarecord
+ WHERE master_record = source_record;
+
+ IF FOUND THEN
+ UPDATE metabib.metarecord
+ SET master_record = target_record,
+ mods = NULL
+ WHERE id = metarec.id;
+
+ moved_objects := moved_objects + 1;
+ END IF;
+
+ -- Find call numbers attached to the source ...
+ FOR source_cn IN SELECT * FROM asset.call_number WHERE record = source_record LOOP
+
+ SELECT INTO target_cn *
+ FROM asset.call_number
+ WHERE label = source_cn.label
+ AND owning_lib = source_cn.owning_lib
+ AND record = target_record;
+
+ -- ... and if there's a conflicting one on the target ...
+ IF FOUND THEN
+
+ -- ... move the copies to that, and ...
+ UPDATE asset.copy
+ SET call_number = target_cn.id
+ WHERE call_number = source_cn.id;
+
+ -- ... move V holds to the move-target call number
+ FOR hold IN SELECT * FROM action.hold_request WHERE target = source_cn.id AND hold_type = 'V' LOOP
+
+ UPDATE action.hold_request
+ SET target = target_cn.id
+ WHERE id = hold.id;
+
+ moved_objects := moved_objects + 1;
+ END LOOP;
+
+ -- ... if not ...
+ ELSE
+ -- ... just move the call number to the target record
+ UPDATE asset.call_number
+ SET record = target_record
+ WHERE id = source_cn.id;
+ END IF;
+
+ moved_objects := moved_objects + 1;
+ END LOOP;
+
+ -- Find T holds targeting the source record ...
+ FOR hold IN SELECT * FROM action.hold_request WHERE target = source_record AND hold_type = 'T' LOOP
+
+ -- ... and move them to the target record
+ UPDATE action.hold_request
+ SET target = target_record
+ WHERE id = hold.id;
+
+ moved_objects := moved_objects + 1;
+ END LOOP;
+
+ -- Find serial records targeting the source record ...
+ FOR ser_rec IN SELECT * FROM serial.record_entry WHERE record = source_record LOOP
+ -- ... and move them to the target record
+ UPDATE serial.record_entry
+ SET record = target_record
+ WHERE id = ser_rec.id;
+
+ moved_objects := moved_objects + 1;
+ END LOOP;
+
+ -- Finally, "delete" the source record
+ DELETE FROM biblio.record_entry WHERE id = source_record;
+
+ -- That's all, folks!
+ RETURN moved_objects;
+END;
+$func$ LANGUAGE plpgsql;
+
+COMMIT;
--
2.11.0