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OldDB.java
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OldDB.java
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/*
BusTO ("backend" components)
Copyright (C) 2016 Ludovico Pavesi
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package it.reyboz.bustorino.data;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class OldDB extends SQLiteOpenHelper {
private static final String DATABASE_NAME_OLD = "bustorino.db";
private int oldVersion = -1;
public OldDB(Context c) {
super(c, DATABASE_NAME_OLD, null, 1337);
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
throw new IllegalStateException("Don't create this database!");
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int oldV, int newV) {
// needed to determine what version this database was. Probably 8.
this.oldVersion = oldV;
}
public int getOldVersion() {
if(this.oldVersion == -1) {
int newVersion = getReadableDatabase().getVersion();
// getReadableDatabase might call onUpgrade
if(this.oldVersion != -1) {
return this.oldVersion;
} else {
return newVersion;
}
} else {
return this.oldVersion;
}
}
public static boolean doesItExist(Context context) {
return context.getDatabasePath(DATABASE_NAME_OLD).exists();
}
public static boolean destroy(Context context) {
return context.getDatabasePath(DATABASE_NAME_OLD).delete();
}
}

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OldDB.java (2 KB)

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