Address LP#837522, bib-killing authority overlay generation bug

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>

diff --git a/Open-ILS/src/sql/Pg/011.schema.authority.sql b/Open-ILS/src/sql/Pg/011.schema.authority.sql
index e0c715a..329f356 100644 (file)
--- a/Open-ILS/src/sql/Pg/011.schema.authority.sql
+++ b/Open-ILS/src/sql/Pg/011.schema.authority.sql
@@ -255,7 +255,37 @@ BEGIN
     END IF;
 
     -- Default to the LoC controll set
-    SELECT COALESCE(control_set,1) INTO cset FROM authority.record_entry WHERE id = auth_id;
+    SELECT control_set INTO cset FROM authority.record_entry WHERE id = auth_id;
+
+    -- if none, make a best guess
+    IF cset IS NULL THEN
+        SELECT  control_set INTO cset
+          FROM  authority.control_set_authority_field
+          WHERE tag IN (
+                    SELECT  UNNEST(XPATH('//*[starts-with(@tag,"1")]/@tag',marc::XML)::TEXT[])
+                      FROM  authority.record_entry
+                      WHERE id = auth_id
+                )
+          LIMIT 1;
+    END IF;
+
+    -- if STILL none, no-op change
+    IF cset IS NULL THEN
+        RETURN XMLELEMENT(
+            name record,
+            XMLATTRIBUTES('http://www.loc.gov/MARC21/slim' AS xmlns),
+            XMLELEMENT( name leader, '00881nam a2200193   4500'),
+            XMLELEMENT(
+                name datafield,
+                XMLATTRIBUTES( '905' AS tag, ' ' AS ind1, ' ' AS ind2),
+                XMLELEMENT(
+                    name subfield,
+                    XMLATTRIBUTES('d' AS code),
+                    '901c'
+                )
+            )
+        )::TEXT;
+    END IF;
 
     FOR main_entry IN SELECT * FROM authority.control_set_authority_field WHERE control_set = cset LOOP
         auth_field := XPATH('//*[@tag="'||main_entry.tag||'"][1]',source_xml::XML);

diff --git a/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.authority_overlay_protection.sql b/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.authority_overlay_protection.sql
new file mode 100644 (file)
index 0000000..9273b80
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/XXXX.schema.authority_overlay_protection.sql
@@ -0,0 +1,92 @@
+-- Evergreen DB patch XXXX.schema.authority_overlay_protection.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
+
+-- Function to generate an ephemeral overlay template from an authority record
+CREATE OR REPLACE FUNCTION authority.generate_overlay_template (source_xml TEXT) RETURNS TEXT AS $f$
+DECLARE
+    cset                INT;
+    main_entry          authority.control_set_authority_field%ROWTYPE;
+    bib_field           authority.control_set_bib_field%ROWTYPE;
+    auth_id             INT DEFAULT oils_xpath_string('//*[@tag="901"]/*[local-name()="subfield" and @code="c"]', source_xml)::INT;
+    replace_data        XML[] DEFAULT '{}'::XML[];
+    replace_rules       TEXT[] DEFAULT '{}'::TEXT[];
+    auth_field          XML[];
+BEGIN
+    IF auth_id IS NULL THEN
+        RETURN NULL;
+    END IF;
+
+    -- Default to the LoC controll set
+    SELECT control_set INTO cset FROM authority.record_entry WHERE id = auth_id;
+
+    -- if none, make a best guess
+    IF cset IS NULL THEN
+        SELECT  control_set INTO cset
+          FROM  authority.control_set_authority_field
+          WHERE tag IN (
+                    SELECT  UNNEST(XPATH('//*[starts-with(@tag,"1")]/@tag',marc::XML)::TEXT[])
+                      FROM  authority.record_entry
+                      WHERE id = auth_id
+                )
+          LIMIT 1;
+    END IF;
+
+    -- if STILL none, no-op change
+    IF cset IS NULL THEN
+        RETURN XMLELEMENT(
+            name record,
+            XMLATTRIBUTES('http://www.loc.gov/MARC21/slim' AS xmlns),
+            XMLELEMENT( name leader, '00881nam a2200193   4500'),
+            XMLELEMENT(
+                name datafield,
+                XMLATTRIBUTES( '905' AS tag, ' ' AS ind1, ' ' AS ind2),
+                XMLELEMENT(
+                    name subfield,
+                    XMLATTRIBUTES('d' AS code),
+                    '901c'
+                )
+            )
+        )::TEXT;
+    END IF;
+
+    FOR main_entry IN SELECT * FROM authority.control_set_authority_field WHERE control_set = cset LOOP
+        auth_field := XPATH('//*[@tag="'||main_entry.tag||'"][1]',source_xml::XML);
+        IF ARRAY_LENGTH(auth_field,1) > 0 THEN
+            FOR bib_field IN SELECT * FROM authority.control_set_bib_field WHERE authority_field = main_entry.id LOOP
+                replace_data := replace_data || XMLELEMENT( name datafield, XMLATTRIBUTES(bib_field.tag AS tag), XPATH('//*[local-name()="subfield"]',auth_field[1])::XML[]);
+                replace_rules := replace_rules || ( bib_field.tag || main_entry.sf_list || E'[0~\\)' || auth_id || '$]' );
+            END LOOP;
+            EXIT;
+        END IF;
+    END LOOP;
+
+    RETURN XMLELEMENT(
+        name record,
+        XMLATTRIBUTES('http://www.loc.gov/MARC21/slim' AS xmlns),
+        XMLELEMENT( name leader, '00881nam a2200193   4500'),
+        replace_data,
+        XMLELEMENT(
+            name datafield,
+            XMLATTRIBUTES( '905' AS tag, ' ' AS ind1, ' ' AS ind2),
+            XMLELEMENT(
+                name subfield,
+                XMLATTRIBUTES('r' AS code),
+                ARRAY_TO_STRING(replace_rules,',')
+            )
+        )
+    )::TEXT;
+END;
+$f$ STABLE LANGUAGE PLPGSQL;
+
+
+
+COMMIT;