From: miker <miker@dcc99617-32d9-48b4-a31d-7c20da2025e4>
Date: Wed, 27 Apr 2011 15:51:40 +0000 (+0000)
Subject: stock schema version of 0526
X-Git-Url: http://git.equinoxoli.org/?p=evergreen-equinox.git;a=commitdiff_plain;h=07bc6361c35d21f533b319bd9b771d3875c1308d

stock schema version of 0526

git-svn-id: svn://svn.open-ils.org/ILS/trunk@20343 dcc99617-32d9-48b4-a31d-7c20da2025e4
---

diff --git a/Open-ILS/src/sql/Pg/002.schema.config.sql b/Open-ILS/src/sql/Pg/002.schema.config.sql
index 20045c2..3dd2fbd 100644
--- a/Open-ILS/src/sql/Pg/002.schema.config.sql
+++ b/Open-ILS/src/sql/Pg/002.schema.config.sql
@@ -54,10 +54,18 @@ ALTER TABLE config.global_flag ADD PRIMARY KEY (name);
 
 CREATE TABLE config.upgrade_log (
     version         TEXT    PRIMARY KEY,
-    install_date    TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+    install_date    TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    applied_to      TEXT
 );
 
-INSERT INTO config.upgrade_log (version) VALUES ('0526'); -- phasefx
+CREATE TABLE config.db_patch_dependencies (
+  db_patch      TEXT PRIMARY KEY,
+  supersedes    TEXT[],
+  deprecates    TEXT[],
+  EXCLUDE ( supersedes WITH &&, deprecates WITH && )
+);
+
+INSERT INTO config.upgrade_log (version, applied_to) VALUES ('0526', :eg_version); -- miker
 
 CREATE TABLE config.bib_source (
 	id		SERIAL	PRIMARY KEY,
@@ -794,4 +802,68 @@ BEGIN
 END;
 $$ LANGUAGE PLPGSQL;
 
+-- List applied db patches that are deprecated by (and block the application of) my_db_patch
+CREATE OR REPLACE FUNCTION evergreen.upgrade_list_applied_deprecates ( my_db_patch TEXT ) RETURNS SETOF TEXT AS $$
+    SELECT  DISTINCT l.version
+      FROM  config.upgrade_log l
+            JOIN config.db_patch_dependencies d ON (l.version::TEXT[] && d.deprecates)
+      WHERE d.db_patch = my_db_patch 
+$$ LANGUAGE SQL;
+
+-- List applied db patches that are superseded by (and block the application of) my_db_patch
+CREATE OR REPLACE FUNCTION evergreen.upgrade_list_applied_supersedes ( my_db_patch TEXT ) RETURNS SETOF TEXT AS $$
+    SELECT  DISTINCT l.version
+      FROM  config.upgrade_log l
+            JOIN config.db_patch_dependencies d ON (l.version::TEXT[] && d.supersedes)
+      WHERE d.db_patch = my_db_patch 
+$$ LANGUAGE SQL;
+
+-- List applied db patches that deprecates (and block the application of) my_db_patch
+CREATE OR REPLACE FUNCTION evergreen.upgrade_list_applied_superseded ( my_db_patch TEXT ) RETURNS TEXT AS $$
+    SELECT  db_patch
+      FROM  config.db_patch_dependencies
+      WHERE my_db_patch::TEXT[] && deprecates 
+$$ LANGUAGE SQL;
+
+-- List applied db patches that supersedes (and block the application of) my_db_patch
+CREATE OR REPLACE FUNCTION evergreen.upgrade_list_applied_superseded ( my_db_patch TEXT ) RETURNS TEXT AS $$
+    SELECT  db_patch
+      FROM  config.db_patch_dependencies
+      WHERE my_db_patch::TEXT[] && supersedes 
+$$ LANGUAGE SQL;
+
+-- Make sure that no deprecated or superseded db patches are currently applied
+CREATE OR REPLACE FUNCTION evergreen.upgrade_verify_no_dep_conflicts ( my_db_patch TEXT ) RETURNS BOOL AS $$
+    SELECT  COUNT(*) = 0
+      FROM  (SELECT * FROM evergreen.upgrade_list_applied_deprecates( my_db_patch )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_supersedes( my_db_patch )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_deprecated( my_db_patch )
+                UNION
+             SELECT * FROM evergreen.upgrade_list_applied_superseded( my_db_patch ))x
+$$ LANGUAGE SQL;
+
+-- Raise an exception if there are, in fact, dep/sup confilct
+CREATE OR REPLACE FUNCTION evergreen.upgrade_deps_block_check ( my_db_patch TEXT, my_applied_to TEXT ) RETURNS BOOL AS $$
+BEGIN
+    IF NOT evergreen.upgrade_verify_no_dep_conflicts( my_db_patch ) THEN
+        RAISE EXCEPTION '
+Upgrade script % can not be applied:
+  applied deprecated scripts %
+  applied superseded scripts %
+  deprecated by %
+  superseded by %',
+            my_db_patch,
+            ARRAY_ACUM(evergreen.upgrade_list_applied_deprecates(my_db_patch)),
+            ARRAY_ACUM(evergreen.upgrade_list_applied_supersedes(my_db_patch)),
+            evergreen.upgrade_list_applied_deprecated(my_db_patch),
+            evergreen.upgrade_list_applied_superseded(my_db_patch);
+    END IF;
+
+    INSERT INTO config.upgrade_log (version, applied_to) VALUES (my_db_patch, my_applied_to);
+    RETURN TRUE;
+END;
+$$ LANGUAGE SQL;
+
 COMMIT;