From: miker <miker@dcc99617-32d9-48b4-a31d-7c20da2025e4>
Date: Tue, 12 Apr 2011 18:16:07 +0000 (+0000)
Subject: Add a trigger function to simulate FKEY constraints on inherited tables
X-Git-Url: https://old-git.evergreen-ils.org/?a=commitdiff_plain;h=d429c2d3bcd1ab3152de1091a4e7699a4af7114a;p=contrib%2FConifer.git

Add a trigger function to simulate FKEY constraints on inherited tables

git-svn-id: svn://svn.open-ils.org/ILS/trunk@20053 dcc99617-32d9-48b4-a31d-7c20da2025e4
---

diff --git a/Open-ILS/src/sql/Pg/000.functions.general.sql b/Open-ILS/src/sql/Pg/000.functions.general.sql
index 2f09a50d95..5204ceee1e 100644
--- a/Open-ILS/src/sql/Pg/000.functions.general.sql
+++ b/Open-ILS/src/sql/Pg/000.functions.general.sql
@@ -24,6 +24,19 @@ EXECUTE 'ALTER DATABASE ' || quote_ident(current_database()) || ' SET ' || quote
 END;
 $$ LANGUAGE plpgsql;
 
+CREATE OR REPLACE FUNCTION evergreen.fake_fkey_tgr () RETURNS TRIGGER AS $F$
+DECLARE
+    copy_id BIGINT;
+BEGIN
+    EXECUTE 'SELECT ($1).' || quote_ident(TG_ARGV[0]) INTO copy_id USING NEW;
+    PERFORM * FROM asset.copy WHERE id = copy_id;
+    IF NOT FOUND THEN
+        RAISE EXCEPTION 'Key (%.%=%) does not exist in asset.copy', TG_TABLE_SCHEMA, TG_TABLE_NAME, copy_id;
+    END IF;
+    RETURN NULL;
+END;
+$F$ LANGUAGE PLPGSQL;
+
 SELECT evergreen.change_db_setting('search_path', ARRAY['evergreen','public','pg_catalog']);
 
 COMMIT;
diff --git a/Open-ILS/src/sql/Pg/002.schema.config.sql b/Open-ILS/src/sql/Pg/002.schema.config.sql
index 1e3752ef28..43390dab12 100644
--- a/Open-ILS/src/sql/Pg/002.schema.config.sql
+++ b/Open-ILS/src/sql/Pg/002.schema.config.sql
@@ -70,7 +70,7 @@ CREATE TABLE config.upgrade_log (
     install_date    TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
 );
 
-INSERT INTO config.upgrade_log (version) VALUES ('0510'); -- miker
+INSERT INTO config.upgrade_log (version) VALUES ('0511'); -- miker
 
 CREATE TABLE config.bib_source (
 	id		SERIAL	PRIMARY KEY,
diff --git a/Open-ILS/src/sql/Pg/090.schema.action.sql b/Open-ILS/src/sql/Pg/090.schema.action.sql
index 3a34659d06..12dbec0478 100644
--- a/Open-ILS/src/sql/Pg/090.schema.action.sql
+++ b/Open-ILS/src/sql/Pg/090.schema.action.sql
@@ -151,6 +151,8 @@ CREATE INDEX action_circulation_target_copy_idx ON action.circulation (target_co
 CREATE UNIQUE INDEX circ_parent_idx ON action.circulation ( parent_circ ) WHERE parent_circ IS NOT NULL;
 CREATE UNIQUE INDEX only_one_concurrent_checkout_per_copy ON action.circulation(target_copy) WHERE checkin_time IS NULL;
 
+CREATE TRIGGER action_circulation_target_copy_trig AFTER INSERT OR UPDATE ON action.circulation FOR EACH ROW EXECUTE PROCEDURE evergreen.fake_fkey_tgr('target_copy');
+
 CREATE TRIGGER mat_summary_create_tgr AFTER INSERT ON action.circulation FOR EACH ROW EXECUTE PROCEDURE money.mat_summary_create ('circulation');
 CREATE TRIGGER mat_summary_change_tgr AFTER UPDATE ON action.circulation FOR EACH ROW EXECUTE PROCEDURE money.mat_summary_update ();
 CREATE TRIGGER mat_summary_remove_tgr AFTER DELETE ON action.circulation FOR EACH ROW EXECUTE PROCEDURE money.mat_summary_delete ();
diff --git a/Open-ILS/src/sql/Pg/upgrade/0511.schema.fake_fkey_tgr-for-inherited-tables.sql b/Open-ILS/src/sql/Pg/upgrade/0511.schema.fake_fkey_tgr-for-inherited-tables.sql
new file mode 100644
index 0000000000..71e0b44886
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/0511.schema.fake_fkey_tgr-for-inherited-tables.sql
@@ -0,0 +1,21 @@
+BEGIN;
+
+INSERT INTO config.upgrade_log (version) VALUES ('0511'); -- miker
+
+CREATE OR REPLACE FUNCTION evergreen.fake_fkey_tgr () RETURNS TRIGGER AS $F$
+DECLARE
+    copy_id BIGINT;
+BEGIN
+    EXECUTE 'SELECT ($1).' || quote_ident(TG_ARGV[0]) INTO copy_id USING NEW;
+    PERFORM * FROM asset.copy WHERE id = copy_id;
+    IF NOT FOUND THEN
+        RAISE EXCEPTION 'Key (%.%=%) does not exist in asset.copy', TG_TABLE_SCHEMA, TG_TABLE_NAME, copy_id;
+    END IF;
+    RETURN NULL;
+END;
+$F$ LANGUAGE PLPGSQL;
+
+CREATE TRIGGER action_circulation_target_copy_trig AFTER INSERT OR UPDATE ON action.circulation FOR EACH ROW EXECUTE PROCEDURE evergreen.fake_fkey_tgr('target_copy');
+
+COMMIT;
+