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47 lines
2.3 KiB
47 lines
2.3 KiB
/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012 gnosygnu@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gplx.dbs; import gplx.*;
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import gplx.dbs.engines.*; import gplx.dbs.engines.nulls.*; import gplx.dbs.engines.mems.*; import gplx.dbs.engines.tdbs.*;
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import gplx.dbs.engines.sqlite.*; import gplx.dbs.engines.mysql.*; import gplx.dbs.engines.postgres.*;
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public class Db_conn_pool {
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private final Hash_adp conn_hash = Hash_adp_.new_(); private final Hash_adp engine_hash = Hash_adp_.new_();
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public void Clear() {conn_hash.Clear();}
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public void Del(Db_conn_info url) {conn_hash.Del(url.Db_api());}
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public Db_conn Get_or_new__mem(String db) {return Get_or_new(Mem_conn_info.new_(db));}
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public Db_conn Get_or_new__sqlite(Io_url url) {return Get_or_new(Db_conn_info_.sqlite_(url));}
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public Db_conn Get_or_new(String s) {return Get_or_new(Db_conn_info_.parse(s));}
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public Db_conn Get_or_new(Db_conn_info url) {
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Db_conn rv = (Db_conn)conn_hash.Get_by(url.Db_api());
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if (rv == null) {
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Db_engine prime = (Db_engine)engine_hash.Get_by(url.Key()); if (prime == null) Err_.new_wo_type("db engine prototype not found", "key", url.Key());
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Db_engine clone = prime.New_clone(url);
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rv = new Db_conn(clone);
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conn_hash.Add(url.Db_api(), rv);
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}
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return rv;
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}
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public void Engines__add(Db_engine... ary) {
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for (Db_engine itm : ary)
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engine_hash.Add(itm.Tid(), itm);
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}
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public static final Db_conn_pool Instance = new Db_conn_pool(); Db_conn_pool() {this.Init();}
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private void Init() {
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this.Engines__add(Noop_engine.Instance, TdbEngine.Instance, Mysql_engine.Instance, Postgres_engine.Instance, Sqlite_engine.Instance, Mem_engine.Instance);
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}
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}
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