+/*
+ * Copyright © 2019 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.async;
+
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import net.ktnx.mobileledger.model.Data;
+import net.ktnx.mobileledger.utils.MLDB;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class RefreshDescriptionsTask extends AsyncTask<Void, Void, Void> {
+ @Override
+ protected Void doInBackground(Void... voids) {
+ Map<String, Boolean> unique = new HashMap<>();
+
+ Log.d("descriptions", "Starting refresh");
+ SQLiteDatabase db = MLDB.getWritableDatabase();
+
+ Data.backgroundTaskCount.incrementAndGet();
+ try {
+ db.beginTransaction();
+ try {
+ db.execSQL("UPDATE description_history set keep=0");
+ try (Cursor c = db
+ .rawQuery("SELECT distinct description from transactions", null))
+ {
+ while (c.moveToNext()) {
+ String description = c.getString(0);
+ String descriptionUpper = description.toUpperCase();
+ if (unique.containsKey(descriptionUpper)) continue;
+
+ db.execSQL(
+ "replace into description_history(description, description_upper, " +
+ "keep) values(?, ?, 1)", new String[]{description, descriptionUpper});
+ unique.put(descriptionUpper, true);
+ }
+ }
+ db.execSQL("DELETE from description_history where keep=0");
+ db.setTransactionSuccessful();
+ Log.d("descriptions", "Refresh successful");
+ }
+ finally {
+ db.endTransaction();
+ }
+ }
+ finally {
+ Data.backgroundTaskCount.decrementAndGet();
+ Log.d("descriptions", "Refresh done");
+ }
+
+ return null;
+ }
+}