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# See the file LICENSE for redistribution information.
#
# Copyright (c) 1999-2002
# Sleepycat Software. All rights reserved.
#
# $Id: test053.tcl,v 11.18 2002/05/24 15:24:55 sue Exp $
#
# TEST test053
# TEST Test of the DB_REVSPLITOFF flag in the Btree and Btree-w-recnum
# TEST methods.
proc test053 { method args } {
global alphabet
global errorCode
source ./include.tcl
set args [convert_args $method $args]
set omethod [convert_method $method]
puts "\tTest053: Test of cursor stability across btree splits."
if { [is_btree $method] != 1 && [is_rbtree $method] != 1 } {
puts "Test053: skipping for method $method."
return
}
set pgindex [lsearch -exact $args "-pagesize"]
if { $pgindex != -1 } {
puts "Test053: skipping for specific pagesizes"
return
}
set txn ""
set flags ""
puts "\tTest053.a: Create $omethod $args database."
set txnenv 0
set eindex [lsearch -exact $args "-env"]
#
# If we are using an env, then testfile should just be the db name.
# Otherwise it is the test directory and the name.
if { $eindex == -1 } {
set testfile $testdir/test053.db
set env NULL
} else {
set testfile test053.db
incr eindex
set env [lindex $args $eindex]
set txnenv [is_txnenv $env]
if { $txnenv == 1 } {
append args " -auto_commit "
}
set testdir [get_home $env]
}
set t1 $testdir/t1
cleanup $testdir $env
set oflags \
"-create -revsplitoff -pagesize 1024 $args $omethod"
set db [eval {berkdb_open} $oflags $testfile]
error_check_good dbopen [is_valid_db $db] TRUE
set nkeys 8
set npages 15
# We want to create a db with npages leaf pages, and have each page
# be near full with keys that we can predict. We set pagesize above
# to 1024 bytes, it should breakdown as follows (per page):
#
# ~20 bytes overhead
# key: ~4 bytes overhead, XXX0N where X is a letter, N is 0-9
# data: ~4 bytes overhead, + 100 bytes
#
# then, with 8 keys/page we should be just under 1024 bytes
puts "\tTest053.b: Create $npages pages with $nkeys pairs on each."
set keystring [string range $alphabet 0 [expr $npages -1]]
set data [repeat DATA 22]
for { set i 0 } { $i < $npages } {incr i } {
set key ""
set keyroot \
[repeat [string toupper [string range $keystring $i $i]] 3]
set key_set($i) $keyroot
for {set j 0} { $j < $nkeys} {incr j} {
if { $j < 10 } {
set key [set keyroot]0$j
} else {
set key $keyroot$j
}
if { $txnenv == 1 } {
set t [$env txn]
error_check_good txn [is_valid_txn $t $env] TRUE
set txn "-txn $t"
}
set ret [eval {$db put} $txn {$key $data}]
error_check_good dbput $ret 0
if { $txnenv == 1 } {
error_check_good txn [$t commit] 0
}
}
}
puts "\tTest053.c: Check page count."
error_check_good page_count:check \
[is_substr [$db stat] "{Leaf pages} $npages"] 1
puts "\tTest053.d: Delete all but one key per page."
for {set i 0} { $i < $npages } {incr i } {
for {set j 1} { $j < $nkeys } {incr j } {
if { $txnenv == 1 } {
set t [$env txn]
error_check_good txn [is_valid_txn $t $env] TRUE
set txn "-txn $t"
}
set ret [eval {$db del} $txn {$key_set($i)0$j}]
error_check_good dbdel $ret 0
if { $txnenv == 1 } {
error_check_good txn [$t commit] 0
}
}
}
puts "\tTest053.e: Check to make sure all pages are still there."
error_check_good page_count:check \
[is_substr [$db stat] "{Leaf pages} $npages"] 1
if { $txnenv == 1 } {
set t [$env txn]
error_check_good txn [is_valid_txn $t $env] TRUE
set txn "-txn $t"
}
set dbc [eval {$db cursor} $txn]
error_check_good db:cursor [is_valid_cursor $dbc $db] TRUE
# walk cursor through tree forward, backward.
# delete one key, repeat
for {set i 0} { $i < $npages} {incr i} {
puts -nonewline \
"\tTest053.f.$i: Walk curs through tree: forward..."
for { set j $i; set curr [$dbc get -first]} { $j < $npages} { \
incr j; set curr [$dbc get -next]} {
error_check_bad dbc:get:next [llength $curr] 0
error_check_good dbc:get:keys \
[lindex [lindex $curr 0] 0] $key_set($j)00
}
puts -nonewline "backward..."
for { set j [expr $npages - 1]; set curr [$dbc get -last]} { \
$j >= $i } { \
set j [incr j -1]; set curr [$dbc get -prev]} {
error_check_bad dbc:get:prev [llength $curr] 0
error_check_good dbc:get:keys \
[lindex [lindex $curr 0] 0] $key_set($j)00
}
puts "complete."
if { [is_rbtree $method] == 1} {
puts "\t\tTest053.f.$i:\
Walk through tree with record numbers."
for {set j 1} {$j <= [expr $npages - $i]} {incr j} {
set curr [eval {$db get} $txn {-recno $j}]
error_check_bad \
db_get:recno:$j [llength $curr] 0
error_check_good db_get:recno:keys:$j \
[lindex [lindex $curr 0] 0] \
$key_set([expr $j + $i - 1])00
}
}
puts "\tTest053.g.$i:\
Delete single key ([expr $npages - $i] keys left)."
set ret [eval {$db del} $txn {$key_set($i)00}]
error_check_good dbdel $ret 0
error_check_good del:check \
[llength [eval {$db get} $txn {$key_set($i)00}]] 0
}
# end for loop, verify db_notfound
set ret [$dbc get -first]
error_check_good dbc:get:verify [llength $ret] 0
# loop: until single key restored on each page
for {set i 0} { $i < $npages} {incr i} {
puts "\tTest053.i.$i:\
Restore single key ([expr $i + 1] keys in tree)."
set ret [eval {$db put} $txn {$key_set($i)00 $data}]
error_check_good dbput $ret 0
puts -nonewline \
"\tTest053.j: Walk cursor through tree: forward..."
for { set j 0; set curr [$dbc get -first]} { $j <= $i} {\
incr j; set curr [$dbc get -next]} {
error_check_bad dbc:get:next [llength $curr] 0
error_check_good dbc:get:keys \
[lindex [lindex $curr 0] 0] $key_set($j)00
}
error_check_good dbc:get:next [llength $curr] 0
puts -nonewline "backward..."
for { set j $i; set curr [$dbc get -last]} { \
$j >= 0 } { \
set j [incr j -1]; set curr [$dbc get -prev]} {
error_check_bad dbc:get:prev [llength $curr] 0
error_check_good dbc:get:keys \
[lindex [lindex $curr 0] 0] $key_set($j)00
}
puts "complete."
error_check_good dbc:get:prev [llength $curr] 0
if { [is_rbtree $method] == 1} {
puts "\t\tTest053.k.$i:\
Walk through tree with record numbers."
for {set j 1} {$j <= [expr $i + 1]} {incr j} {
set curr [eval {$db get} $txn {-recno $j}]
error_check_bad \
db_get:recno:$j [llength $curr] 0
error_check_good db_get:recno:keys:$j \
[lindex [lindex $curr 0] 0] \
$key_set([expr $j - 1])00
}
}
}
error_check_good dbc_close [$dbc close] 0
if { $txnenv == 1 } {
error_check_good txn [$t commit] 0
}
error_check_good db_close [$db close] 0
puts "Test053 complete."
}
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