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49 lines
2.0 KiB
Java
49 lines
2.0 KiB
Java
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/*
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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.mems.*;
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public class Db_conn_pool {
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private final HashAdp dbm_hash = HashAdp_.new_(); private final HashAdp engine_hash = HashAdp_.new_();
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Db_conn_pool() {this.Init();}
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public Db_conn Get_or_new__sqlite(Io_url url) {return Get_or_new(Db_url_.sqlite_(url));}
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public Db_conn Get_or_new(Db_url url) {
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Db_conn rv = (Db_conn)dbm_hash.Fetch(url.Xto_api());
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if (rv == null) {
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Db_engine prime = (Db_engine)engine_hash.Fetch(url.Tid()); if (prime == null) throw Err_.new_("db engine prototype not found; tid={0}", url.Tid());
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Db_engine clone = prime.New_clone(url);
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rv = new Db_conn(clone);
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dbm_hash.Add(url.Xto_api(), rv);
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}
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return rv;
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}
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public void Set_mem(String db, Db_meta_tbl... tbls) {
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Db_url url = Db_url__mem.new_(db);
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Db_engine__mem engine = new Db_engine__mem(url, tbls);
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Db_conn dbm = new Db_conn(engine);
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dbm_hash.AddReplace(url.Xto_api(), dbm);
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}
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private void Init() {
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this.Engines__add(Db_engine_null._, TdbEngine._, Mysql_engine._, Postgres_engine._, Sqlite_engine._, Db_engine__mem._);
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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 I = new Db_conn_pool();
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}
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