package net.ktnx.mobileledger.utils;
import android.annotation.TargetApi;
-import android.app.Application;
import android.content.Context;
-import android.content.res.Resources;
import android.database.Cursor;
-import android.database.MatrixCursor;
-import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
+import android.os.AsyncTask;
import android.os.Build;
-import android.provider.FontsContract;
-import android.util.Log;
-import android.view.View;
import android.widget.AutoCompleteTextView;
import android.widget.FilterQueryProvider;
import android.widget.SimpleCursorAdapter;
+import androidx.annotation.NonNull;
+
+import net.ktnx.mobileledger.App;
+import net.ktnx.mobileledger.async.DbOpQueue;
import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
import net.ktnx.mobileledger.model.Data;
+import net.ktnx.mobileledger.model.MobileLedgerProfile;
import org.jetbrains.annotations.NonNls;
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.Locale;
+import static net.ktnx.mobileledger.utils.Logger.debug;
public final class MLDB {
public static final String ACCOUNTS_TABLE = "accounts";
@NonNls
public static final String OPT_PROFILE_UUID = "profile_uuid";
private static final String NO_PROFILE = "-";
- private static MobileLedgerDatabase dbHelper;
- private static Application context;
- private static void checkState() {
- if (context == null)
- throw new IllegalStateException("First call init with a valid context");
- }
- public static SQLiteDatabase getDatabase() {
- checkState();
-
- SQLiteDatabase db;
-
- db = dbHelper.getWritableDatabase();
-
- db.execSQL("pragma case_sensitive_like=ON;");
- return db;
- }
+ @SuppressWarnings("unused")
static public int getIntOption(String name, int default_value) {
String s = getOption(name, String.valueOf(default_value));
try {
return Integer.parseInt(s);
}
catch (Exception e) {
- Log.d("db", "returning default int value of " + name, e);
+ debug("db", "returning default int value of " + name, e);
return default_value;
}
}
+ @SuppressWarnings("unused")
static public long getLongOption(String name, long default_value) {
String s = getOption(name, String.valueOf(default_value));
try {
return Long.parseLong(s);
}
catch (Exception e) {
- Log.d("db", "returning default long value of " + name, e);
+ debug("db", "returning default long value of " + name, e);
return default_value;
}
}
+ static public void getOption(String name, String defaultValue, GetOptCallback cb) {
+ AsyncTask<Void, Void, String> t = new AsyncTask<Void, Void, String>() {
+ @Override
+ protected String doInBackground(Void... params) {
+ SQLiteDatabase db = App.getDatabase();
+ try (Cursor cursor = db.rawQuery(
+ "select value from options where profile=? and name=?",
+ new String[]{NO_PROFILE, name}))
+ {
+ if (cursor.moveToFirst()) {
+ String result = cursor.getString(0);
+
+ if (result == null)
+ result = defaultValue;
+
+ debug("async-db", "option " + name + "=" + result);
+ return result;
+ }
+ else
+ return defaultValue;
+ }
+ catch (Exception e) {
+ debug("db", "returning default value for " + name, e);
+ return defaultValue;
+ }
+ }
+ @Override
+ protected void onPostExecute(String result) {
+ cb.onResult(result);
+ }
+ };
+
+ t.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
+ }
static public String getOption(String name, String default_value) {
- Log.d("db", "about to fetch option " + name);
- SQLiteDatabase db = getDatabase();
- try (Cursor cursor = db.rawQuery("select value from options where profile = ? and name=?",
+ debug("db", "about to fetch option " + name);
+ SQLiteDatabase db = App.getDatabase();
+ try (Cursor cursor = db.rawQuery("select value from options where profile=? and name=?",
new String[]{NO_PROFILE, name}))
{
if (cursor.moveToFirst()) {
String result = cursor.getString(0);
- if (result == null) result = default_value;
+ if (result == null)
+ result = default_value;
- Log.d("db", "option " + name + "=" + result);
+ debug("db", "option " + name + "=" + result);
return result;
}
- else return default_value;
+ else
+ return default_value;
}
catch (Exception e) {
- Log.d("db", "returning default value for " + name, e);
+ debug("db", "returning default value for " + name, e);
return default_value;
}
}
static public void setOption(String name, String value) {
- Log.d("option", String.format("%s := %s", name, value));
- SQLiteDatabase db = MLDB.getDatabase();
- db.execSQL("insert or replace into options(profile, name, value) values(?, ?, ?);",
+ debug("option", String.format("%s := %s", name, value));
+ DbOpQueue.add("insert or replace into options(profile, name, value) values(?, ?, ?);",
new String[]{NO_PROFILE, name, value});
}
+ @SuppressWarnings("unused")
static public void setLongOption(String name, long value) {
setOption(name, String.valueOf(value));
}
@TargetApi(Build.VERSION_CODES.N)
public static void hookAutocompletionAdapter(final Context context,
final AutoCompleteTextView view,
- final String table, final String field,
- final boolean profileSpecific) {
- hookAutocompletionAdapter(context, view, table, field, profileSpecific, null, null);
+ final String table, final String field) {
+ hookAutocompletionAdapter(context, view, table, field, true, null, null);
}
@TargetApi(Build.VERSION_CODES.N)
public static void hookAutocompletionAdapter(final Context context,
final AutoCompleteTextView view,
final String table, final String field,
- final boolean profileSpecific, final View nextView,
- final DescriptionSelectedCallback callback) {
+ final boolean profileSpecific,
+ final DescriptionSelectedCallback callback,
+ final MobileLedgerProfile profile) {
String[] from = {field};
int[] to = {android.R.id.text1};
SimpleCursorAdapter adapter =
adapter.setStringConversionColumn(1);
FilterQueryProvider provider = constraint -> {
- if (constraint == null) return null;
+ if (constraint == null)
+ return null;
- String str = constraint.toString().toUpperCase();
- Log.d("autocompletion", "Looking for " + str);
- String[] col_names = {FontsContract.Columns._ID, field};
- MatrixCursor c = new MatrixCursor(col_names);
+ String str = constraint.toString()
+ .toUpperCase();
+ debug("autocompletion", "Looking for " + str);
String sql;
String[] params;
if (profileSpecific) {
- sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
- "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
- "WHEN %s_upper LIKE '%% '||?||'%%' then 3 else 9 end " +
- "FROM %s " +
- "WHERE profile=? AND %s_upper LIKE '%%'||?||'%%' " +
- "ORDER BY 2, 1;", field, field, field, field, table, field);
- params = new String[]{str, str, str, Data.profile.get().getUuid(), str};
+ MobileLedgerProfile p = (profile == null) ? Data.profile.getValue() : profile;
+ if (p == null)
+ throw new AssertionError();
+ sql = String.format(
+ "SELECT rowid as _id, %s, CASE WHEN %s_upper LIKE ?||'%%' THEN 1 " +
+ "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
+ "WHEN %s_upper LIKE '%% '||?||'%%' THEN 3 " + "ELSE 9 END " + "FROM %s " +
+ "WHERE profile=? AND %s_upper LIKE '%%'||?||'%%' " +
+ "ORDER BY 3, %s_upper, 1;", field, field, field, field, table, field,
+ field);
+ params = new String[]{str, str, str, p.getUuid(), str};
}
else {
- sql = String.format("SELECT %s as a, case when %s_upper LIKE ?||'%%' then 1 " +
- "WHEN %s_upper LIKE '%%:'||?||'%%' then 2 " +
- "WHEN %s_upper LIKE '%% '||?||'%%' then 3 " + "else 9 end " +
- "FROM %s " + "WHERE %s_upper LIKE '%%'||?||'%%' " +
- "ORDER BY 2, 1;", field, field, field, field, table, field);
+ sql = String.format(
+ "SELECT rowid as _id, %s, CASE WHEN %s_upper LIKE ?||'%%' THEN 1 " +
+ "WHEN %s_upper LIKE '%%:'||?||'%%' THEN 2 " +
+ "WHEN %s_upper LIKE '%% '||?||'%%' THEN 3 " + "ELSE 9 END " + "FROM %s " +
+ "WHERE %s_upper LIKE '%%'||?||'%%' " + "ORDER BY 3, %s_upper, 1;", field,
+ field, field, field, table, field, field);
params = new String[]{str, str, str, str};
}
- Log.d("autocompletion", sql);
- SQLiteDatabase db = MLDB.getDatabase();
-
- try (Cursor matches = db.rawQuery(sql, params)) {
- int i = 0;
- while (matches.moveToNext()) {
- String match = matches.getString(0);
- int order = matches.getInt(1);
- Log.d("autocompletion", String.format("match: %s |%d", match, order));
- c.newRow().add(i++).add(match);
- }
- }
-
- return c;
+ debug("autocompletion", sql);
+ SQLiteDatabase db = App.getDatabase();
+ return db.rawQuery(sql, params);
};
adapter.setFilterQueryProvider(provider);
view.setAdapter(adapter);
- if (nextView != null) {
- view.setOnItemClickListener((parent, itemView, position, id) -> {
- nextView.requestFocus(View.FOCUS_FORWARD);
- if (callback != null) {
- callback.descriptionSelected(String.valueOf(view.getText()));
- }
- });
- }
- }
- public static synchronized void init(Application context) {
- MLDB.context = context;
- if (dbHelper != null)
- throw new IllegalStateException("It appears init() was already called");
- dbHelper = new MobileLedgerDatabase(context);
- }
- public static synchronized void done() {
- if (dbHelper != null) {
- Log.d("db", "Closing DB helper");
- dbHelper.close();
- dbHelper = null;
- }
- }
-}
-
-class MobileLedgerDatabase extends SQLiteOpenHelper implements AutoCloseable {
- private static final String DB_NAME = "MoLe.db";
- private static final int LATEST_REVISION = 21;
- private static final String CREATE_DB_SQL = "create_db";
-
- private final Application mContext;
-
- public MobileLedgerDatabase(Application context) {
- super(context, DB_NAME, null, LATEST_REVISION);
- Log.d("db", "creating helper instance");
- mContext = context;
- super.setWriteAheadLoggingEnabled(true);
- }
-
- @Override
- public void onCreate(SQLiteDatabase db) {
- Log.d("db", "onCreate called");
- applyRevisionFile(db, CREATE_DB_SQL);
- }
-
- @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) {
- String rev_file = String.format(Locale.US, "sql_%d", rev_no);
-
- applyRevisionFile(db, rev_file);
- }
- private void applyRevisionFile(SQLiteDatabase db, String rev_file) {
- final Resources rm = mContext.getResources();
- int res_id = rm.getIdentifier(rev_file, "raw", mContext.getPackageName());
- if (res_id == 0)
- throw new SQLException(String.format(Locale.US, "No resource for %s", rev_file));
- db.beginTransaction();
- try (InputStream res = rm.openRawResource(res_id)) {
- Log.d("db", "Applying " + rev_file);
- InputStreamReader isr = new InputStreamReader(res);
- BufferedReader reader = new BufferedReader(isr);
-
- String line;
- int line_no = 1;
- while ((line = reader.readLine()) != null) {
- if (line.startsWith("--")) {
- line_no++;
- continue;
- }
- if (line.isEmpty()) {
- line_no++;
- continue;
- }
- try {
- db.execSQL(line);
- }
- catch (Exception e) {
- throw new RuntimeException(
- String.format("Error applying %s, line %d", rev_file, line_no), e);
+ if (callback != null)
+ view.setOnItemClickListener(
+ (parent, itemView, position, id) -> callback.descriptionSelected(
+ String.valueOf(view.getText())));
+ }
+ public static void queryInBackground(@NonNull String statement, @NonNull String[] params,
+ @NonNull CallbackHelper callbackHelper) {
+ /* All callbacks are called in the new (asynchronous) thread! */
+ Thread t = new Thread(() -> {
+ callbackHelper.onStart();
+ try {
+ SQLiteDatabase db = App.getDatabase();
+
+ try (Cursor cursor = db.rawQuery(statement, params)) {
+ boolean gotRow = false;
+ while (cursor.moveToNext()) {
+ gotRow = true;
+ if (!callbackHelper.onRow(cursor))
+ break;
+ }
+ if (!gotRow) {
+ callbackHelper.onNoRows();
+ }
}
- line_no++;
}
-
- db.setTransactionSuccessful();
- }
- catch (IOException e) {
- Log.e("db", String.format("Error opening raw resource for %s", rev_file));
- e.printStackTrace();
- }
- finally {
- db.endTransaction();
+ catch (Exception e) {
+ callbackHelper.onException(e);
+ }
+ finally {
+ callbackHelper.onDone();
+ }
+ });
+
+ t.start();
+ }
+ /* MLDB.CallbackHelper -- Abstract class for asynchronous SQL query callbacks */
+ @SuppressWarnings("WeakerAccess")
+ abstract public static class CallbackHelper {
+ public void onStart() {}
+ public abstract boolean onRow(@NonNull Cursor cursor);
+ public void onNoRows() {}
+ public void onException(Exception exception) {
+ Logger.debug("MLDB", "Exception in asynchronous SQL", exception);
}
+ public void onDone() {}
}
}
+