Example #1
0
  @Test
  public void shouldPersistToFile() throws IOException {

    /** * WRITE DB 1 ** */
    Db db = Ohm.db(DB_FILE);
    Table<Person> table = db.table(Person.class);

    assert 0 == table.insert(person("a", 100));
    assert 1 == table.insert(person("b", 200));

    for (int i = 0; i < 3; i++) {
      table.set(0, "name", "x" + i);
      table.set(0, "age", i);
    }

    table.print();

    db.shutdown();

    /** * READ DB 2 ** */
    Db db2 = Ohm.db(DB_FILE);
    Table<Person> table2 = db2.table(Person.class);

    eq(table2.size(), 2);
    table2.print();

    /** * WRITE DB 2 ** */
    long id2 = table2.insert(person("c", 300));
    eq(id2, 2L);

    eq(table2.size(), 3);

    table2.set(0, "name", "x");
    table2.set(1, "name", "y");

    table2.delete(1);
    eq(table2.size(), 2);

    table2.set(2, "name", "z");

    table2.print();

    db2.shutdown();

    /** * READ DB 3 ** */
    Db db3 = Ohm.db(DB_FILE);
    Table<Person> table3 = db3.table(Person.class);

    eq(table3.size(), 2);
    table3.print();

    db3.shutdown();
  }
Example #2
0
  @Test
  public void shouldPersistToFileMini() throws IOException, TransactionException {
    Db db = Ohm.db(DB_FILE);
    Table<Person> table = db.table(Person.class);

    assert 0 == table.insert(person("a", 100));
    assert 1 == table.insert(person("b", 200));

    db.shutdown();

    /** * READ DB 2 ** */
    Db db2 = Ohm.db(DB_FILE);
    Table<Person> table2 = db2.table(Person.class);

    Transaction txx = db2.startTransaction();

    eq(table2.size(), 2);

    System.out.println("now delete...");
    table2.delete(1);

    eq(table2.size(), 1);

    txx.commit();

    Transaction txx2 = db2.startTransaction();

    System.out.println("now set name");
    table2.set(0, "name", "z");

    txx2.commit();

    db2.shutdown();

    /** * READ DB 3 ** */
    U.sleep(1000);
    System.out.println("=============================");

    Db db3 = Ohm.db(DB_FILE);

    Table<Person> table3 = db3.table(Person.class);
    eq(table3.size(), 1);
  }