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This commit is contained in:
Lars Mueller 2021-07-20 21:56:38 +02:00
parent 26de548e32
commit a2a6cdd64d
2 changed files with 43 additions and 43 deletions
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80
persistence/sqlite3.lua
View File

@ -41,9 +41,9 @@ end
function new(file_path, root) function new(file_path, root)
return setmetatable({ return setmetatable({
database = sqlite3.open(file_path), database = sqlite3.open(file_path),
root = root root = root
}, metatable) }, metatable)
end end
function _ENV.setmetatable(self) function _ENV.setmetatable(self)
@ -54,16 +54,16 @@ end
local set local set
local function add_table(self, table) local function add_table(self, table)
if type(table) ~= "table" then return end if type(table) ~= "table" then return end
if self.counts[table] then if self.counts[table] then
self.counts[table] = self.counts[table] + 1 self.counts[table] = self.counts[table] + 1
return return
end end
self.table_ids[table] = increment_highest_table_id(self) self.table_ids[table] = increment_highest_table_id(self)
self.counts[table] = 1 self.counts[table] = 1
for k, v in pairs(table) do for k, v in pairs(table) do
set(self, table, k, v) set(self, table, k, v)
end end
end end
local decrement_reference_count local decrement_reference_count
@ -136,13 +136,13 @@ function set(self, table, key, value)
end end
local function exec(self, sql) local function exec(self, sql)
if self.database:exec(sql) ~= sqlite3.OK then if self.database:exec(sql) ~= sqlite3.OK then
error(self.database:errmsg()) error(self.database:errmsg())
end end
end end
function init(self) function init(self)
local database = self.database local database = self.database
local function prepare(sql) local function prepare(sql)
local stmt = database:prepare(sql) local stmt = database:prepare(sql)
if not stmt then error(database:errmsg()) end if not stmt then error(database:errmsg()) end
@ -167,8 +167,8 @@ CREATE TABLE IF NOT EXISTS table_entries (
value BLOB NOT NULL, value BLOB NOT NULL,
PRIMARY KEY (table_id, key_type, key) PRIMARY KEY (table_id, key_type, key)
)]]) )]])
-- Default value -- Default value
self.highest_table_id = 0 self.highest_table_id = 0
for id in self.database:urows"SELECT MAX(table_id) FROM table_entries" do for id in self.database:urows"SELECT MAX(table_id) FROM table_entries" do
-- Gets a single value -- Gets a single value
self.highest_table_id = id self.highest_table_id = id
@ -176,7 +176,7 @@ CREATE TABLE IF NOT EXISTS table_entries (
increment_highest_table_id(self) increment_highest_table_id(self)
local tables = {} local tables = {}
local counts = {} local counts = {}
self.counts = counts self.counts = counts
local function get_value(type_, content) local function get_value(type_, content)
if type_ == types.boolean then if type_ == types.boolean then
if content == 0 then return false end if content == 0 then return false end
@ -216,25 +216,25 @@ CREATE TABLE IF NOT EXISTS table_entries (
table[get_value(key_type, key)] = get_value(value_type, value) table[get_value(key_type, key)] = get_value(value_type, value)
tables[table_id] = table tables[table_id] = table
end end
if tables[1] then if tables[1] then
self.root = tables[1] self.root = tables[1]
counts[self.root] = counts[self.root] + 1 counts[self.root] = counts[self.root] + 1
self.table_ids = modlib.table.flip(tables) self.table_ids = modlib.table.flip(tables)
self:collectgarbage() self:collectgarbage()
else else
self.highest_table_id = 0 self.highest_table_id = 0
self.table_ids = {} self.table_ids = {}
add_table(self, self.root) add_table(self, self.root)
end end
databases[self] = true databases[self] = true
end end
function rewrite(self) function rewrite(self)
exec(self, "DELETE FROM table_entries") exec(self, "DELETE FROM table_entries")
self.highest_table_id = 0 self.highest_table_id = 0
self.table_ids = {} self.table_ids = {}
self.counts = {} self.counts = {}
add_table(self, self.root) add_table(self, self.root)
end end
function _ENV.set(self, table, key, value) function _ENV.set(self, table, key, value)
@ -248,7 +248,7 @@ function _ENV.set(self, table, key, value)
end end
function set_root(self, key, value) function set_root(self, key, value)
return _ENV.set(self, self.root, key, value) return _ENV.set(self, self.root, key, value)
end end
function collectgarbage(self) function collectgarbage(self)
@ -292,10 +292,10 @@ local function finalize_statements(table)
for _, stmt in pairs(table) do for _, stmt in pairs(table) do
if type(stmt) == "table" then if type(stmt) == "table" then
finalize_statements(stmt) finalize_statements(stmt)
else else
local errcode = stmt:finalize() local errcode = stmt:finalize()
assert(errcode == sqlite3.OK, errcode) assert(errcode == sqlite3.OK, errcode)
end end
end end
end end

6
test.lua
View File

@ -310,10 +310,10 @@ test_logfile(false)
do do
local sqlite3 = persistence.sqlite3(require"lsqlite3") local sqlite3 = persistence.sqlite3(require"lsqlite3")
local p = sqlite3.new("database.test.sqlite3", {}) local p = sqlite3.new("database.test.sqlite3", {})
p:init() p:init()
p:rewrite() p:rewrite()
p:set_root("key", "value") p:set_root("key", "value")
assert(p.root.key == "value") assert(p.root.key == "value")
p:set_root("other key", "other value") p:set_root("other key", "other value")
p:set_root("key", "other value") p:set_root("key", "other value")
p:set_root("key", nil) p:set_root("key", nil)