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Sqlite: Add option for read-only detection [#509]

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gnosygnu
2019-07-19 07:14:24 -04:00
parent 7f76d8128d
commit 989ccde83a
28 changed files with 669 additions and 168 deletions
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12
140_dbs/src/gplx/dbs/engines/sqlite/Sqlite_engine.java
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@@ -16,8 +16,11 @@ Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
package gplx.dbs.engines.sqlite; import gplx.*; import gplx.dbs.*; import gplx.dbs.engines.*;
import java.sql.*;
import gplx.core.stores.*; import gplx.dbs.engines.*; import gplx.dbs.engines.sqlite.*; import gplx.dbs.metas.*; import gplx.dbs.sqls.*;
import gplx.dbs.qrys.*;
import gplx.dbs.qrys.*;
import gplx.core.consoles.Console_adp_;
import gplx.core.consoles.Console_adp__sys;
import gplx.core.ios.IoItmFil;
import org.sqlite.SQLiteConnection;
public class Sqlite_engine extends Db_engine_sql_base {
private final Sqlite_txn_mgr txn_mgr; private final Sqlite_schema_mgr schema_mgr;
@@ -68,9 +71,14 @@ public class Sqlite_engine extends Db_engine_sql_base {
// set open_mode flag if conn is read-only; needed else all SELECT queries will be very slow; DATE:2016-09-03
IoItmFil sqlite_fs_itm = Io_mgr.Instance.QueryFil(sqlite_fs_url);
Keyval[] props = sqlite_fs_itm.Exists() && sqlite_fs_itm.ReadOnly() // NOTE: must check if it exists; else missing-file will be marked as readonly connection, and missing-file will sometimes be dynamically created as read-write; DATE:2016-09-04
boolean read_only = sqlite_fs_itm.Exists() // NOTE: must check if it exists; else missing-file will be marked as readonly connection, and missing-file will sometimes be dynamically created as read-write; DATE:2016-09-04
&& Io_mgr.Instance.Query_read_only(sqlite_fs_url.OwnerDir(), Sqlite_engine_.Read_only_detection);
Keyval[] props = read_only
? Keyval_.Ary(Keyval_.new_("open_mode", "1"))
: Keyval_.Ary_empty;
if (read_only) {
Gfo_usr_dlg_.Instance.Note_many("", "", "Sqlite db opened as read-only: url=~{0}", sqlite_fs_url.Xto_api());
}
// open connection
Connection rv = Conn__new_by_url_and_props(sqlite_db_url, props);

1
140_dbs/src/gplx/dbs/engines/sqlite/Sqlite_engine_.java
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@@ -74,4 +74,5 @@ public class Sqlite_engine_ {
public static String X_date_to_str(DateAdp v) {return v == Date_null ? "" : v.XtoStr_fmt_iso_8561();}
public static final DateAdp Date_null = null;
public static final byte Wildcard_byte = Byte_ascii.Hash;
public static int Read_only_detection = Io_mgr.Read_only__basic__file;
}