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check if a table exists before making it instead of catching the sqlite

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exception
This commit is contained in:
jesopo 2018-08-18 21:53:50 +01:00
parent 33b48f5ea3
commit 8386e45343
1 changed files with 23 additions and 29 deletions
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42
Database.py
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@ -265,65 +265,59 @@ class Database(object):
def execute(self, query, params=[]):
return self._execute_fetch(query, lambda cursor: None, params)
def has_table(self, table_name):
result = self.execute_fetchone("""SELECT COUNT(*) FROM
sqlite_master WHERE type='table' AND name=?""",
[table_name])
return result[0] == 1
def make_servers_table(self):
try:
if not self.has_table("servers"):
self.execute("""CREATE TABLE servers
(server_id INTEGER PRIMARY KEY,
hostname TEXT, port INTEGER, password TEXT,
ipv4 BOOLEAN, tls BOOLEAN, nickname TEXT,
username TEXT, realname TEXT)""")
except sqlite3.Error as e:
pass
def make_bot_settings_table(self):
try:
if not self.has_table("bot_settings"):
self.execute("""CREATE TABLE bot_settings
(setting TEXT PRIMARY KEY, value TEXT)""")
except sqlite3.Error as e:
return
self.execute("""CREATE INDEX bot_settings_index ON
bot_settings (setting)""")
self.execute("""CREATE INDEX bot_settings_index
ON bot_settings (setting)""")
def make_server_settings_table(self):
try:
if not self.has_table("server_settings"):
self.execute("""CREATE TABLE server_settings
(server_id INTEGER, setting TEXT, value TEXT,
FOREIGN KEY(server_id) REFERENCES
servers(server_id) ON DELETE CASCADE,
PRIMARY KEY (server_id, setting))""")
except sqlite3.Error as e:
return
self.execute("""CREATE INDEX server_settings_index ON
server_settings (server_id, setting)""")
self.execute("""CREATE INDEX server_settings_index
ON server_settings (server_id, setting)""")
def make_channel_settings_table(self):
try:
if not self.has_table("channel_settings"):
self.execute("""CREATE TABLE channel_settings
(server_id INTEGER, channel TEXT, setting TEXT,
value TEXT, FOREIGN KEY (server_id) REFERENCES
servers(server_id) ON DELETE CASCADE,
PRIMARY KEY (server_id, channel, setting))""")
except sqlite3.Error as e:
return
self.execute("""CREATE INDEX channel_settings_index ON
channel_settings (server_id, channel, setting)""")
self.execute("""CREATE INDEX channel_settings_index
ON channel_settings (server_id, channel, setting)""")
def make_user_settings_table(self):
try:
if not self.has_table("user_settings"):
self.execute("""CREATE TABLE user_settings
(server_id INTEGER, nickname TEXT, setting TEXT,
value TEXT, FOREIGN KEY (server_id) REFERENCES
servers(server_id) ON DELETE CASCADE,
PRIMARY KEY (server_id, nickname, setting))""")
except sqlite3.Error as e:
return
self.execute("""CREATE INDEX user_settings_index ON
user_settings (server_id, nickname, setting)""")
def make_user_channel_settings_table(self):
try:
if not self.has_table("user_channel_settings"):
self.execute("""CREATE TABLE user_channel_settings
(server_id INTEGER, channel TEXT, nickname TEXT,
setting TEXT, value TEXT, FOREIGN KEY (server_id)
REFERENCES servers(server_id) ON DELETE CASCADE,
PRIMARY KEY (server_id, nickname, channel, setting))""")
except sqlite3.Error as e:
return
self.execute("""CREATE INDEX user_channel_settings_index
ON user_channel_settings (server_id, nickname, channel,
setting)""")