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Add API function sqlite3_preupdate_depth(), for determining the depth of the trigger stack from within a pre-update callback.

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FossilOrigin-Name: bdea70895c2c686a4dd3f4bf0a475fd1501d9551
This commit is contained in:
dan
2011-03-22 18:45:29 +00:00
parent 245b49b203
commit 1e7a2d4315
6 changed files with 152 additions and 12 deletions
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112
test/hook.test
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@ -651,6 +651,118 @@ do_preupdate_test 7.6.2 {
DELETE main t9 3 3 1 3 4
}
#--------------------------------------------------------------------------
# Test that the sqlite3_preupdate_depth() API seems to work.
#
proc preupdate_hook {args} {
set type [lindex $args 0]
eval lappend ::preupdate $args
eval lappend ::preupdate [db preupdate depth]
if {$type != "INSERT"} {
for {set i 0} {$i < [db preupdate count]} {incr i} {
lappend ::preupdate [db preupdate old $i]
}
}
if {$type != "DELETE"} {
for {set i 0} {$i < [db preupdate count]} {incr i} {
set rc [catch { db preupdate new $i } v]
lappend ::preupdate $v
}
}
}
db close
forcedelete test.db
sqlite3 db test.db
db preupdate hook preupdate_hook
do_execsql_test 7.6.1 {
CREATE TABLE t1(x PRIMARY KEY);
CREATE TABLE t2(x PRIMARY KEY);
CREATE TABLE t3(x PRIMARY KEY);
CREATE TABLE t4(x PRIMARY KEY);
CREATE TRIGGER a AFTER INSERT ON t1 BEGIN INSERT INTO t2 VALUES(new.x); END;
CREATE TRIGGER b AFTER INSERT ON t2 BEGIN INSERT INTO t3 VALUES(new.x); END;
CREATE TRIGGER c AFTER INSERT ON t3 BEGIN INSERT INTO t4 VALUES(new.x); END;
CREATE TRIGGER d AFTER UPDATE ON t1 BEGIN UPDATE t2 SET x = new.x; END;
CREATE TRIGGER e AFTER UPDATE ON t2 BEGIN UPDATE t3 SET x = new.x; END;
CREATE TRIGGER f AFTER UPDATE ON t3 BEGIN UPDATE t4 SET x = new.x; END;
CREATE TRIGGER g AFTER DELETE ON t1 BEGIN DELETE FROM t2 WHERE 1; END;
CREATE TRIGGER h AFTER DELETE ON t2 BEGIN DELETE FROM t3 WHERE 1; END;
CREATE TRIGGER i AFTER DELETE ON t3 BEGIN DELETE FROM t4 WHERE 1; END;
}
do_preupdate_test 7.6.2 {
INSERT INTO t1 VALUES('xyz');
} {
INSERT main t1 1 1 0 xyz
INSERT main t2 1 1 1 xyz
INSERT main t3 1 1 2 xyz
INSERT main t4 1 1 3 xyz
}
do_preupdate_test 7.6.3 {
UPDATE t1 SET x = 'abc';
} {
UPDATE main t1 1 1 0 xyz abc
UPDATE main t2 1 1 1 xyz abc
UPDATE main t3 1 1 2 xyz abc
UPDATE main t4 1 1 3 xyz abc
}
do_preupdate_test 7.6.4 {
DELETE FROM t1 WHERE 1;
} {
DELETE main t1 1 1 0 abc
DELETE main t2 1 1 1 abc
DELETE main t3 1 1 2 abc
DELETE main t4 1 1 3 abc
}
do_execsql_test 7.6.5 {
DROP TRIGGER a; DROP TRIGGER b; DROP TRIGGER c;
DROP TRIGGER d; DROP TRIGGER e; DROP TRIGGER f;
DROP TRIGGER g; DROP TRIGGER h; DROP TRIGGER i;
CREATE TRIGGER a BEFORE INSERT ON t1 BEGIN INSERT INTO t2 VALUES(new.x); END;
CREATE TRIGGER b BEFORE INSERT ON t2 BEGIN INSERT INTO t3 VALUES(new.x); END;
CREATE TRIGGER c BEFORE INSERT ON t3 BEGIN INSERT INTO t4 VALUES(new.x); END;
CREATE TRIGGER d BEFORE UPDATE ON t1 BEGIN UPDATE t2 SET x = new.x; END;
CREATE TRIGGER e BEFORE UPDATE ON t2 BEGIN UPDATE t3 SET x = new.x; END;
CREATE TRIGGER f BEFORE UPDATE ON t3 BEGIN UPDATE t4 SET x = new.x; END;
CREATE TRIGGER g BEFORE DELETE ON t1 BEGIN DELETE FROM t2 WHERE 1; END;
CREATE TRIGGER h BEFORE DELETE ON t2 BEGIN DELETE FROM t3 WHERE 1; END;
CREATE TRIGGER i BEFORE DELETE ON t3 BEGIN DELETE FROM t4 WHERE 1; END;
}
do_preupdate_test 7.6.6 {
INSERT INTO t1 VALUES('xyz');
} {
INSERT main t4 1 1 3 xyz
INSERT main t3 1 1 2 xyz
INSERT main t2 1 1 1 xyz
INSERT main t1 1 1 0 xyz
}
do_preupdate_test 7.6.3 {
UPDATE t1 SET x = 'abc';
} {
UPDATE main t4 1 1 3 xyz abc
UPDATE main t3 1 1 2 xyz abc
UPDATE main t2 1 1 1 xyz abc
UPDATE main t1 1 1 0 xyz abc
}
do_preupdate_test 7.6.4 {
DELETE FROM t1 WHERE 1;
} {
DELETE main t4 1 1 3 abc
DELETE main t3 1 1 2 abc
DELETE main t2 1 1 1 abc
DELETE main t1 1 1 0 abc
}
finish_test