Examples of java.sql.Connection.commit()

java.sql.Connection.commit()
Commit makes all changes made since the previous commit/rollback permanent and releases any database locks currently held by the Connection. This method should only be used when auto commit has been disabled. @exception SQLException if a database-access error occurs. @see #setAutoCommit


        conn.setAutoCommit(false);
        stat.execute("delete from test");
        conn.rollback();
        stat.execute("update test set name = 'Hallo'");
        conn.commit();
        rs = stat.executeQuery("select * from test order by id");
        rs.next();
        assertEquals(1, rs.getInt(1));
        assertEquals("Hallo", rs.getString(2));
        assertFalse(rs.next());

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        s3.execute("SET LOCK_TIMEOUT 1000");
        Thread t1 = new Thread(new Runnable() {
            public void run() {
                try {
                    s3.execute("INSERT INTO TEST2 VALUES(4)");
                    conn3.commit();
                } catch (SQLException e) {
                    TestBase.logError("insert", e);
                }
            }
        });

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        c1.commit();
        c2.rollback();
        s1.execute("INSERT INTO MULTI_A VALUES(1, '0-insert-C')");
        s2.execute("INSERT INTO MULTI_B VALUES(1, '1-insert-D')");
        c1.rollback();
        c2.commit();
        c1.close();
        c2.close();


        if (!config.memory) {
            Connection conn = getConnection("multiConn");

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        Connection conn = getConnection("transaction");
        conn.setAutoCommit(false);
        Statement stat = conn.createStatement();
        stat.execute("create table test(id int primary key, name varchar)");
        stat.execute("insert into test values(1, 'Hello'), (2, 'World')");
        conn.commit();
        PreparedStatement prep = conn.prepareStatement("select * from test for update");
        prep.execute();
        Connection conn2 = getConnection("transaction");
        conn2.setAutoCommit(false);
        assertThrows(ErrorCode.LOCK_TIMEOUT_1, conn2.createStatement()).

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        Connection conn = getConnection("transaction");
        conn.setAutoCommit(false);
        Statement stat = conn.createStatement();
        stat.execute("create table test(id int primary key, name varchar)");
        stat.execute("insert into test values(1, 'Hello'), (2, 'World')");
        conn.commit();
        PreparedStatement prep = conn.prepareStatement("select * from test where id = 1 for update");
        prep.execute();
        // releases the lock
        conn.commit();
        prep.execute();

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        stat.execute("insert into test values(1, 'Hello'), (2, 'World')");
        conn.commit();
        PreparedStatement prep = conn.prepareStatement("select * from test where id = 1 for update");
        prep.execute();
        // releases the lock
        conn.commit();
        prep.execute();
        Connection conn2 = getConnection("transaction");
        conn2.setAutoCommit(false);
        Statement stat2 = conn2.createStatement();
        if (config.mvcc && Constants.VERSION_MINOR >= 3) {

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        conn.setAutoCommit(false);
        Statement stat = conn.createStatement();
        stat.execute("create table test(id int)");
        stat.execute("insert into test values(1)");
        stat.execute("set @x = 1");
        conn.commit();
        assertSingleValue(stat, "select id from test", 1);
        assertSingleValue(stat, "call @x", 1);


        stat.execute("update test set id=2");
        stat.execute("set @x = 2");

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                    executeUpdate("insert into B values('two', 1)");
        } else {
            assertThrows(ErrorCode.LOCK_TIMEOUT_1, s2).
                    executeUpdate("insert into B values('two', 1)");
        }
        c2.commit();
        c1.rollback();
        c1.close();
        c2.close();
    }

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                    count[0] = countSave[0];
                    count[1] = countSave[1];
                }
                break;
            case 4:
                conn.commit();
                sp = null;
                countCommitted[0] = count[0];
                countCommitted[1] = count[1];
                break;
            case 5:

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        conn.setAutoCommit(false);
        assertFalse(conn.getAutoCommit());
        conn.setAutoCommit(true);
        assertTrue(conn.getAutoCommit());
        test(stat, "CREATE TABLE TEST(ID INT PRIMARY KEY)");
        conn.commit();
        test(stat, "INSERT INTO TEST VALUES(0)");
        conn.rollback();
        testValue(stat, "SELECT COUNT(*) FROM TEST", "1");
        conn.setAutoCommit(false);
        test(stat, "DELETE FROM TEST");

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