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expanded database env connect

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Remy Marquis 2019-01-02 22:32:28 +01:00
parent 0e25f4751f
commit 848c97d279
1 changed files with 13 additions and 11 deletions
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24
database.rst
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@ -6,17 +6,6 @@ Both the Legacy mod and the ET:Legacy engine are built-in with `SQLite3 <https:/
.. tip:: See the `Database <sample.html#database>`__ sample code for an example of basic database usage. .. tip:: See the `Database <sample.html#database>`__ sample code for an example of basic database usage.
If desired, Lua scripts can also connect to the engine memory database by the following Lua command::
--[[
Lua Example connecting to engine database
--]]
con = assert (env:connect( "file::memory:?cache=shared"))
.. Note:: The database is only active when the `db_mode <https://dev.etlegacy.com/projects/etlegacy/wiki/List_of_Cvars#db_-Additional>`_ cvar is set.
To save this in memory database to disk use the **saveDB** console command. See also the `db_url <https://dev.etlegacy.com/projects/etlegacy/wiki/List_of_Cvars#db_-Additional>`_ cvar to specify the database path.
Error handling Error handling
============== ==============
@ -73,8 +62,21 @@ The sourcename may vary according to each driver. SQLite3 uses a simple database
.. Some use a simple database name, like PostgreSQL, MySQL and SQLite; the ODBC driver expects the name of the DSN; the Oracle driver expects the service name; See also: PostgreSQL, and MySQL extensions. .. Some use a simple database name, like PostgreSQL, MySQL and SQLite; the ODBC driver expects the name of the DSN; the Oracle driver expects the service name; See also: PostgreSQL, and MySQL extensions.
-- database path
local dbpath = string.gsub(et.trap_Cvar_Get("fs_homepath"), "\\", "/").."/"..et.trap_Cvar_Get("fs_game").."/"
-- connection
conn = assert(env:connect(dbpath .. "etl.db"))
Returns a `connection object <database.html#connection-objects>`__. Returns a `connection object <database.html#connection-objects>`__.
If desired, Lua scripts can also connect to the engine memory database by the following Lua command::
conn = assert(env:connect("file::memory:?cache=shared"))
.. Note:: The database is only active when the `db_mode <https://dev.etlegacy.com/projects/etlegacy/wiki/List_of_Cvars#db_-Additional>`_ cvar is set.
To save this in memory database to disk use the **saveDB** console command. See also the `db_url <https://dev.etlegacy.com/projects/etlegacy/wiki/List_of_Cvars#db_-Additional>`_ cvar to specify the database path.
Connection objects Connection objects
================== ==================