From: Mike Rylander <mrylander@gmail.com>
Date: Wed, 18 May 2011 15:33:07 +0000 (-0400)
Subject: Fix the definition of some of the tracking functions
X-Git-Url: http://git.equinoxoli.org/?p=evergreen-equinox.git;a=commitdiff_plain;h=60c996b358cc3fbcb184c6f045109b40e8f36d3f

Fix the definition of some of the tracking functions

Signed-off-by: Mike Rylander <mrylander@gmail.com>
---

diff --git a/Open-ILS/src/sql/Pg/upgrade/0537.schema.upgrade-dep-tracking-fix.sql b/Open-ILS/src/sql/Pg/upgrade/0537.schema.upgrade-dep-tracking-fix.sql
new file mode 100644
index 0000000..529993c
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/0537.schema.upgrade-dep-tracking-fix.sql
@@ -0,0 +1,58 @@
+BEGIN;
+
+INSERT INTO config.upgrade_log (version) VALUES ('0537'); --miker
+
+DROP FUNCTION evergreen.upgrade_deps_block_check(text,text);
+DROP FUNCTION evergreen.upgrade_verify_no_dep_conflicts(text);
+DROP FUNCTION evergreen.upgrade_list_applied_deprecated(text);
+DROP FUNCTION evergreen.upgrade_list_applied_superseded(text);
+
+-- List applied db patches that deprecates (and block the application of) my_db_patch
+CREATE FUNCTION evergreen.upgrade_list_applied_deprecated ( my_db_patch TEXT ) RETURNS SETOF TEXT AS $$
+    SELECT  db_patch
+      FROM  config.db_patch_dependencies
+      WHERE ARRAY[$1]::TEXT[] && deprecates
+$$ LANGUAGE SQL;
+
+-- List applied db patches that supersedes (and block the application of) my_db_patch
+CREATE FUNCTION evergreen.upgrade_list_applied_superseded ( my_db_patch TEXT ) RETURNS SETOF TEXT AS $$
+    SELECT  db_patch
+      FROM  config.db_patch_dependencies
+      WHERE ARRAY[$1]::TEXT[] && supersedes
+$$ LANGUAGE SQL;
+
+-- Make sure that no deprecated or superseded db patches are currently applied
+CREATE FUNCTION evergreen.upgrade_verify_no_dep_conflicts ( my_db_patch TEXT ) RETURNS BOOL AS $$
+    SELECT  COUNT(*) = 0
+      FROM  (SELECT * FROM evergreen.upgrade_list_applied_deprecates( $1 )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_supersedes( $1 )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_deprecated( $1 )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_superseded( $1 ))x
+$$ LANGUAGE SQL;
+
+-- Raise an exception if there are, in fact, dep/sup confilct
+CREATE FUNCTION evergreen.upgrade_deps_block_check ( my_db_patch TEXT, my_applied_to TEXT ) RETURNS BOOL AS $$
+BEGIN
+    IF NOT evergreen.upgrade_verify_no_dep_conflicts( my_db_patch ) THEN
+        RAISE EXCEPTION '
+Upgrade script % can not be applied:
+  applied deprecated scripts %
+  applied superseded scripts %
+  deprecated by %
+  superseded by %',
+            my_db_patch,
+            ARRAY_ACCUM(evergreen.upgrade_list_applied_deprecates(my_db_patch)),
+            ARRAY_ACCUM(evergreen.upgrade_list_applied_supersedes(my_db_patch)),
+            evergreen.upgrade_list_applied_deprecated(my_db_patch),
+            evergreen.upgrade_list_applied_superseded(my_db_patch);
+    END IF;
+
+    INSERT INTO config.upgrade_log (version, applied_to) VALUES (my_db_patch, my_applied_to);
+    RETURN TRUE;
+END;
+$$ LANGUAGE PLPGSQL;
+
+COMMIT;