separate packages for the different aspects of the application

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / MobileLedgerDatabase.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDatabase.java b/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDatabase.java
deleted file mode 100644 (file)
index c7f4c5e..0000000
--- a/app/src/main/java/net/ktnx/mobileledger/MobileLedgerDatabase.java
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * Copyright © 2018 Damyan Ivanov.
- * This file is part of Mobile-Ledger.
- * Mobile-Ledger is free software: you can distribute it and/or modify it
- * under the term of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your opinion), any later version.
- *
- * Mobile-Ledger 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 terms for details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
- */
-
-package net.ktnx.mobileledger;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.database.Cursor;
-import android.database.SQLException;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-import android.util.Log;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.Locale;
-
-class MobileLedgerDatabase extends SQLiteOpenHelper implements AutoCloseable {
-    static final String DB_NAME = "mobile-ledger.db";
-    static final String ACCOUNTS_TABLE = "accounts";
-    static final String DESCRIPTION_HISTORY_TABLE = "description_history";
-    static final int LATEST_REVISION = 7;
-
-    final Context mContext;
-
-    public
-    MobileLedgerDatabase(Context context) {
-        super(context, DB_NAME, null, LATEST_REVISION);
-        Log.d("db", "creating helper instance");
-        mContext = context;
-    }
-
-    @Override
-    public
-    void onCreate(SQLiteDatabase db) {
-        Log.d("db", "onCreate called");
-        onUpgrade(db, -1, LATEST_REVISION);
-    }
-
-    @Override
-    public
-    void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-        Log.d("db", "onUpgrade called");
-        for(int i = oldVersion+1; i <= newVersion; i++) applyRevision(db, i);
-    }
-
-    private void applyRevision(SQLiteDatabase db, int
-            rev_no) {
-        final Resources rm = mContext.getResources();
-        String rev_file = String.format(Locale.US, "sql_%d", rev_no);
-
-        int res_id = rm.getIdentifier(rev_file, "raw", mContext.getPackageName());
-        if (res_id == 0)
-            throw new SQLException(String.format(Locale.US, "No resource for revision %d", rev_no));
-        db.beginTransaction();
-        try (InputStream res = rm.openRawResource(res_id)) {
-            Log.d("db", "Applying revision " + String.valueOf(rev_no));
-            InputStreamReader isr = new InputStreamReader(res);
-            BufferedReader reader = new BufferedReader(isr);
-
-            String line;
-            while ((line = reader.readLine()) != null) {
-                db.execSQL(line);
-            }
-
-            db.setTransactionSuccessful();
-        }
-        catch (IOException e) {
-            Log.e("db", String.format("Error opening raw resource for revision %d", rev_no));
-            e.printStackTrace();
-        }
-        finally {
-            db.endTransaction();
-        }
-    }
-    int get_option_value(String name, int default_value) {
-        String s = get_option_value(name, String.valueOf(default_value));
-        try {
-            return Integer.parseInt(s);
-        }
-        catch (Exception e) {
-            return default_value;
-        }
-    }
-
-    long get_option_value(String name, long default_value) {
-        String s = get_option_value(name, String.valueOf(default_value));
-        try {
-            return Long.parseLong(s);
-        }
-        catch (Exception e) {
-            Log.d("db", "returning default long value of "+name, e);
-            return default_value;
-        }
-    }
-
-    String get_option_value(String name, String default_value) {
-        Log.d("db", "about to fetch option "+name);
-        try(SQLiteDatabase db = getReadableDatabase()) {
-            try (Cursor cursor = db
-                    .rawQuery("select value from options where name=?", new String[]{name}))
-            {
-                if (cursor.moveToFirst()) {
-                    String result = cursor.getString(0);
-
-                    if (result == null) result = default_value;
-
-                    Log.d("db", "option " + name + "=" + result);
-                    return result;
-                }
-                else return default_value;
-            }
-            catch (Exception e) {
-                Log.d("db", "returning default value for " + name, e);
-                return default_value;
-            }
-        }
-    }
-
-     void set_option_value(String name, String value) {
-        Log.d("db", "setting option "+name+"="+value);
-        try(SQLiteDatabase db = getWritableDatabase()) {
-            db.execSQL("insert or replace into options(name, value) values(?, ?);",
-                    new String[]{name, value});
-        }
-    }
-
-    void set_option_value(String name, long value) {
-        set_option_value(name, String.valueOf(value));
-    }
-    static long get_option_value(Context context, String name, long default_value) {
-        try(MobileLedgerDatabase db = new MobileLedgerDatabase(context)) {
-            return db.get_option_value(name, default_value);
-        }
-    }
-    static void set_option_value(Context context, String name, String value) {
-        try(MobileLedgerDatabase db = new MobileLedgerDatabase(context)) {
-            db.set_option_value(name, value);
-        }
-    }
-}