Db_conn_bldr_wkr.java

/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012-2017 gnosygnu@gmail.com

XOWA is licensed under the terms of the General Public License (GPL) Version 3,
or alternatively under the terms of the Apache License Version 2.0.

You may use XOWA according to either of these licenses as is most appropriate
for your project on a case-by-case basis.

The terms of each license can be found in the source code repository:

GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
*/
package gplx.dbs; import gplx.*;
import gplx.dbs.engines.sqlite.*; import gplx.dbs.qrys.bats.*;
public interface Db_conn_bldr_wkr {
	void Clear_for_tests();
	boolean Exists(Io_url url);
	Db_conn Get(Io_url url);
	Db_conn New(Io_url url);
}
class Db_conn_bldr_wkr__sqlite implements Db_conn_bldr_wkr {
	public void Clear_for_tests() {}
//		public Db_batch_mgr Batch_mgr() {return batch_mgr;} private final    Db_batch_mgr batch_mgr = new Db_batch_mgr();
	public boolean Exists(Io_url url) {return Io_mgr.Instance.ExistsFil(url);}
	public Db_conn Get(Io_url url) {
		if (!Io_mgr.Instance.ExistsFil(url)) return null;
		Db_conn_info db_url = Db_conn_info_.sqlite_(url);
		return Db_conn_pool.Instance.Get_or_new(db_url);
	}
	public Db_conn New(Io_url url) {
		Io_mgr.Instance.CreateDirIfAbsent(url.OwnerDir());	// must assert that dir exists
		Db_conn_info db_url = Sqlite_conn_info.make_(url);
		Db_conn conn = Db_conn_pool.Instance.Get_or_new(db_url);
		conn.Exec_qry(Sqlite_pragma.New__page_size(4096));
		return conn;
	}
        public static final    Db_conn_bldr_wkr__sqlite Instance = new Db_conn_bldr_wkr__sqlite(); Db_conn_bldr_wkr__sqlite() {}
}
class Db_conn_bldr_wkr__mem implements Db_conn_bldr_wkr {
	private final    Hash_adp hash = Hash_adp_.New();
	public void Clear_for_tests() {hash.Clear(); Db_conn_pool.Instance.Rls_all();}
	public boolean Exists(Io_url url) {
		String io_url_str = url.Xto_api();
		return hash.Has(io_url_str);
	}
	public Db_conn Get(Io_url url) {
		String io_url_str = url.Xto_api();
		if (!hash.Has(io_url_str)) return null;
		return Get_or_new(url);
	}
	public Db_conn New(Io_url url) {
		String io_url_str = url.Xto_api();
		hash.Add_if_dupe_use_nth(io_url_str, io_url_str);	// NOTE: tests can call New multiple times; don't fail if exists; just overwrite existing entry; DATE:2016-04-21
		return Get_or_new(url);
	}
	private Db_conn Get_or_new(Io_url url) {
		return Db_conn_pool.Instance.Get_or_new(gplx.dbs.engines.mems.Mem_conn_info.new_(url.Xto_api()));
	}
        public static final    Db_conn_bldr_wkr__mem Instance = new Db_conn_bldr_wkr__mem(); Db_conn_bldr_wkr__mem() {}
}