mirror of https://github.com/NekoX-Dev/NekoX.git
101 lines
2.6 KiB
Java
Executable File
101 lines
2.6 KiB
Java
Executable File
/*
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* This is the source code of Telegram for Android v. 3.x.x.
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Nikolai Kudashov, 2013-2016.
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*/
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package org.telegram.SQLite;
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import org.telegram.messenger.FileLog;
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import org.telegram.messenger.ApplicationLoader;
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public class SQLiteDatabase {
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private final int sqliteHandle;
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private boolean isOpen = false;
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private boolean inTransaction = false;
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public int getSQLiteHandle() {
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return sqliteHandle;
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}
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public SQLiteDatabase(String fileName) throws SQLiteException {
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sqliteHandle = opendb(fileName, ApplicationLoader.getFilesDirFixed().getPath());
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isOpen = true;
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}
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public boolean tableExists(String tableName) throws SQLiteException {
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checkOpened();
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String s = "SELECT rowid FROM sqlite_master WHERE type='table' AND name=?;";
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return executeInt(s, tableName) != null;
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}
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public SQLitePreparedStatement executeFast(String sql) throws SQLiteException {
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return new SQLitePreparedStatement(this, sql, true);
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}
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public Integer executeInt(String sql, Object... args) throws SQLiteException {
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checkOpened();
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SQLiteCursor cursor = queryFinalized(sql, args);
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try {
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if (!cursor.next()) {
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return null;
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}
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return cursor.intValue(0);
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} finally {
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cursor.dispose();
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}
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}
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public SQLiteCursor queryFinalized(String sql, Object... args) throws SQLiteException {
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checkOpened();
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return new SQLitePreparedStatement(this, sql, true).query(args);
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}
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public void close() {
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if (isOpen) {
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try {
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commitTransaction();
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closedb(sqliteHandle);
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} catch (SQLiteException e) {
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FileLog.e("tmessages", e.getMessage(), e);
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}
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isOpen = false;
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}
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}
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void checkOpened() throws SQLiteException {
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if (!isOpen) {
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throw new SQLiteException("Database closed");
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}
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}
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public void finalize() throws Throwable {
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super.finalize();
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close();
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}
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public void beginTransaction() throws SQLiteException {
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if (inTransaction) {
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throw new SQLiteException("database already in transaction");
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}
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inTransaction = true;
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beginTransaction(sqliteHandle);
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}
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public void commitTransaction() {
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if (!inTransaction) {
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return;
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}
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inTransaction = false;
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commitTransaction(sqliteHandle);
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}
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native int opendb(String fileName, String tempDir) throws SQLiteException;
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native void closedb(int sqliteHandle) throws SQLiteException;
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native void beginTransaction(int sqliteHandle);
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native void commitTransaction(int sqliteHandle);
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}
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