From 8e5ba84643c14446c4d14bb878cebdde9babbef6 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Thu, 18 Jul 2002 01:27:17 +0000
Subject: [PATCH] Make the automatic database upgrade work even if there are
 triggers.  Add tests for automatic upgrade and for failing if reading a more
 advanced version of the database.  Ticket #107. (CVS 682)

FossilOrigin-Name: 0493e39c1cbbe4a38e990a2370181a79606af222
---
 manifest          |  13 ++--
 manifest.uuid     |   2 +-
 src/main.c        |  12 +++-
 test/version.test | 169 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 187 insertions(+), 9 deletions(-)
 create mode 100644 test/version.test

diff --git a/manifest b/manifest
index 65e3a042ee..f37095bb77 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sfor\sticket\s#107:\sFix\sa\sdesign\sdefect\sin\sindices\sthat\swas\scausing\squeries\nto\sfail\swhen\susing\san\sindex\son\sa\scolumn\scontaining\san\sempty\sstring.\s\sThis\nfix\sis\san\sincompatible\sfile-format\schange.\s(CVS\s681)
-D 2002-07-18T00:34:10
+C Make\sthe\sautomatic\sdatabase\supgrade\swork\seven\sif\sthere\sare\striggers.\s\sAdd\ntests\sfor\sautomatic\supgrade\sand\sfor\sfailing\sif\sreading\sa\smore\sadvanced\sversion\nof\sthe\sdatabase.\s\sTicket\s#107.\s(CVS\s682)
+D 2002-07-18T01:27:18
 F Makefile.in 6291a33b87d2a395aafd7646ee1ed562c6f2c28c
 F Makefile.template 4e11752e0b5c7a043ca50af4296ec562857ba495
 F README a4c0ba11354ef6ba0776b400d057c59da47a4cc0
@@ -28,7 +28,7 @@ F src/func.c e45cd908b9b723d9b91473d09e12c23f786b3fc2
 F src/hash.c 6a6236b89c8c060c65dabd300a1c8ce7c10edb72
 F src/hash.h cd0433998bc1a3759d244e1637fe5a3c13b53bf8
 F src/insert.c 9bc794863ea2988a7b8667ef010b3c46b26dba38
-F src/main.c dbe691d2b6e0b2b0e0e87ca42c04506ead1c0550
+F src/main.c e22729b9780f2f3a2c69715f53d67666072a63d5
 F src/md5.c 0ae1f3e2cac92d06fc6246d1b4b8f61a2fe66d3b
 F src/os.c edb22daad525f49681f41c76683a16c1d39755c7
 F src/os.h 5b9a69875c880d1665ae040cbca1f7b9c82198ab
@@ -107,6 +107,7 @@ F test/trigger3.test 7dfe798d7e72c13720394685fe353112e3f31adf
 F test/unique.test 572aa791327c1e8d797932263e9d67f176cfdb44
 F test/update.test 7ffb062d580a972e7870d0f51d5af3ab9bfeae08
 F test/vacuum.test 059871b312eb910bbe49dafde1d01490cc2c6bbe
+F test/version.test c970e4196ac995d22ce51a9cb1f0285f8c950deb
 F test/view.test 3afca084dab44c7a5772d3c6a326adf93ad52050
 F test/where.test 1f87bec674bf85d74ac1cc5b2cd3d89be1e87b1d
 F tool/diffdb.c 7524b1b5df217c20cd0431f6789851a4e0cb191b
@@ -141,7 +142,7 @@ F www/speed.tcl da8afcc1d3ccc5696cfb388a68982bc3d9f7f00f
 F www/sqlite.tcl ae3dcfb077e53833b59d4fcc94d8a12c50a44098
 F www/tclsqlite.tcl 1db15abeb446aad0caf0b95b8b9579720e4ea331
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P bbca16f88d00cd33ac7229edf3ee4623eff6e62f
-R 3b401eb81b101736a092f34a44910d1f
+P 20d152fcddb4fa53556a9c93c7a869600a7c5183
+R 234db4e0b851adaa70ea9179904f5e16
 U drh
-Z 3a1e3e849570ce46d4051f5d0915780a
+Z 8a3f7ec18696f6fb7843f936645bc3ff
diff --git a/manifest.uuid b/manifest.uuid
index 7de7eb6145..549a0a047b 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-20d152fcddb4fa53556a9c93c7a869600a7c5183
\ No newline at end of file
+0493e39c1cbbe4a38e990a2370181a79606af222
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 6db127f83f..5012dafc76 100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,7 +14,7 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.87 2002/07/18 00:34:12 drh Exp $
+** $Id: main.c,v 1.88 2002/07/18 01:27:18 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -102,13 +102,21 @@ static int
 upgrade_3_callback(void *pDb, int argc, char **argv, char **NotUsed){
   sqlite *db = (sqlite*)pDb;
   int rc;
+  Table *pTab;
+  Trigger *pTrig;
 
+  pTab = sqliteFindTable(db, argv[0]);
+  if( pTab ){
+    pTrig = pTab->pTrigger;
+    pTab->pTrigger = 0;  /* Disable all triggers before rebuilding the table */
+  }
   rc = sqlite_exec_printf(db,
     "CREATE TEMP TABLE sqlite_x AS SELECT * FROM '%q'; "
     "DELETE FROM '%q'; "
     "INSERT INTO '%q' SELECT * FROM sqlite_x; "
     "DROP TABLE sqlite_x;",
     0, 0, 0, argv[0], argv[0], argv[0]);
+  if( pTab ) pTab->pTrigger = pTrig;  /* Re-enable triggers */
   return rc!=SQLITE_OK;
 }
 
@@ -241,7 +249,7 @@ int sqliteInit(sqlite *db, char **pzErrMsg){
   }else if( db->file_format>3 ){
     sqliteBtreeCloseCursor(curMain);
     sqliteSetString(pzErrMsg, "unsupported file format", 0);
-    rc = SQLITE_ERROR;
+    return SQLITE_ERROR;
   }
 
   /* Read the schema information out of the schema tables
diff --git a/test/version.test b/test/version.test
new file mode 100644
index 0000000000..f742f87f8b
--- /dev/null
+++ b/test/version.test
@@ -0,0 +1,169 @@
+# 2002 July 17
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.  The
+# focus of this file is testing the ability of the library to detect
+# past or future file format version numbers and respond appropriately.
+#
+# $Id: version.test,v 1.1 2002/07/18 01:27:19 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Current file format version
+set VX 3
+
+# Create a new database
+#
+do_test version-1.1 {
+  execsql {
+    CREATE TABLE t1(x);
+    INSERT INTO t1 VALUES(1);
+    INSERT INTO t1 SELECT x+1 FROM t1;
+    INSERT INTO t1 SELECT x+2 FROM t1;
+    INSERT INTO t1 SELECT x+4 FROM t1;
+    SELECT * FROM t1;
+  }
+} {1 2 3 4 5 6 7 8}
+
+# Make sure the version number is set correctly
+#
+do_test version-1.2 {
+  db close
+  set ::bt [btree_open test.db]
+  set ::meta [btree_get_meta $::bt]
+  lindex $::meta 2
+} $VX
+
+# Increase the file_format number by one.  Verify that the
+# file will refuse to open.
+#
+do_test version-1.3 {
+  set m2 [lreplace $::meta 2 2 [expr {$::VX+1}]]
+  btree_begin_transaction $::bt
+  eval btree_update_meta $::bt $m2
+  btree_commit $::bt
+  set rc [catch {sqlite db test.db} msg]
+  lappend rc $msg
+} {1 {unsupported file format}}
+
+# Decrease the file_format number by one.  Verify that the
+# file will open correctly.
+#
+do_test version-1.4 {
+  set m2 [lreplace $::meta 2 2 [expr {$::VX-1}]]
+  btree_begin_transaction $::bt
+  eval btree_update_meta $::bt $m2
+  btree_commit $::bt
+  sqlite db test.db
+  execsql {
+    SELECT * FROM t1;
+  }
+} {1 2 3 4 5 6 7 8}
+
+# Set the file_format number to 2.  This should cause the automatic
+# upgrade processing to run.
+#
+do_test version-1.5 {
+  set m2 [lreplace $::meta 2 2 2]
+  btree_begin_transaction $::bt
+  eval btree_update_meta $::bt $m2
+  btree_commit $::bt
+  sqlite db test.db
+  execsql {
+    SELECT * FROM t1;
+  }
+} {1 2 3 4 5 6 7 8}
+do_test version-1.6 {
+  set ::meta [btree_get_meta $::bt]
+  lindex $::meta 2
+} $VX
+
+# Add some triggers, views, and indices to the schema and make sure the
+# automatic upgrade still works.
+#
+do_test version-1.7 {
+  execsql {
+    CREATE INDEX i1 ON t1(x);
+    DELETE FROM t1;
+    CREATE TABLE t2(a INTEGER PRIMARY KEY, b UNIQUE, c);
+    CREATE TABLE cnt(name,ins, del);
+    INSERT INTO cnt VALUES('t1',0,0);
+    INSERT INTO cnt VALUES('t2',0,0);
+    CREATE TRIGGER r1 AFTER INSERT ON t1 FOR EACH ROW BEGIN
+      UPDATE cnt SET ins=ins+1 WHERE name='t1';
+    END;
+    CREATE TRIGGER r2 AFTER DELETE ON t1 FOR EACH ROW BEGIN
+      UPDATE cnt SET del=del+1 WHERE name='t1';
+    END;
+    CREATE TRIGGER r3 AFTER INSERT ON t2 FOR EACH ROW BEGIN
+      UPDATE cnt SET ins=ins+1 WHERE name='t2';
+    END;
+    CREATE TRIGGER r4 AFTER DELETE ON t2 FOR EACH ROW BEGIN
+      UPDATE cnt SET del=del+1 WHERE name='t2';
+    END;
+    CREATE VIEW v1 AS SELECT x+100 FROM t1;
+    CREATE VIEW v2 AS SELECT sum(ins), sum(del) FROM cnt;
+    INSERT INTO t1 VALUES(1);
+    INSERT INTO t1 SELECT x+1 FROM t1;
+    INSERT INTO t1 SELECT x+2 FROM t1;
+    INSERT INTO t1 SELECT x+4 FROM t1;
+    SELECT * FROM t1;
+  }
+} {1 2 3 4 5 6 7 8}
+do_test version-1.8 {
+  execsql {
+    SELECT * FROM v2;
+  }
+} {8 0}
+do_test version-1.9 {
+  execsql {
+    SELECT * FROM cnt;
+  }
+} {t1 8 0 t2 0 0}
+do_test version-1.10 {
+  execsql {
+    INSERT INTO t2 SELECT x*3, x*2, x FROM t1;
+    SELECT * FROM t2;
+  }
+} {3 2 1 6 4 2 9 6 3 12 8 4 15 10 5 18 12 6 21 14 7 24 16 8}
+do_test version-1.11 {
+  execsql {
+    SELECT * FROM cnt;
+  }
+} {t1 8 0 t2 8 0}
+
+# Here we do the upgrade test.
+#
+do_test version-1.12 {
+  db close
+  set m2 [lreplace $::meta 2 2 2]
+  btree_begin_transaction $::bt
+  eval btree_update_meta $::bt $m2
+  btree_commit $::bt
+  sqlite db test.db
+  execsql {
+    SELECT * FROM cnt;
+  }
+} {t1 8 0 t2 8 0}
+do_test version-1.13 {
+  execsql {
+    SELECT * FROM v1;
+  }
+} {101 102 103 104 105 106 107 108}
+do_test version-1.14 {
+  execsql {
+    SELECT * FROM v2;
+  }
+} {16 0}
+
+
+
+finish_test