Examples of org.conserve.PersistenceManager.deleteObjects()

org.conserve.PersistenceManager.deleteObjects()
Delete all objects that share properties with pattern. Convenience method that does not require the user to supply a ConnectionWrapper. @param pattern @return the number of deleted objects.

  }


  protected void deleteAll() throws SQLException
  {
    PersistenceManager persist = new PersistenceManager(driver, database, login, password);
    persist.deleteObjects(new Object());// clear everything
    persist.close();
  }


  /**
   * Test method for

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    // try deleting one object
    List<Object> allObjects = persist.getObjectsMatching(new Object());
    assertEquals(2, allObjects.size());
    // delete one LessSimpleObject
    SimpleObject pattern = new LessSimpleObject();
    persist.deleteObjects(LessSimpleObject.class, new GreaterOrEqual(pattern));
    allObjects = persist.getObjectsMatching(new Object());
    assertEquals(1, allObjects.size());
    // delete all objects
    persist.deleteObjects(new Object());
    allObjects = persist.getObjectsMatching(new Object());

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    SimpleObject pattern = new LessSimpleObject();
    persist.deleteObjects(LessSimpleObject.class, new GreaterOrEqual(pattern));
    allObjects = persist.getObjectsMatching(new Object());
    assertEquals(1, allObjects.size());
    // delete all objects
    persist.deleteObjects(new Object());
    allObjects = persist.getObjectsMatching(new Object());
    assertTrue(allObjects.isEmpty());
    persist.close();
  }

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    // check that the ComplexArrayObject contains 3 ComplexObjects
    assertEquals(3, ob1.getData().length);
    persist.close();


    persist = new PersistenceManager(driver, database, login, password);
    persist.deleteObjects(new ComplexArrayObject());
    List<ComplexObject> tmp = persist.getObjectsMatching(new ComplexObject());
    assertEquals(1, tmp.size());
    persist.close();
  }

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    persist = new PersistenceManager(driver, database, login, password);


    // it should not be possible to delete l2, since it is part of l1.
    List<Layer2> l2s = persist.getObjects(Layer2.class, new All());
    assertEquals(1, l2s.size());
    persist.deleteObjects(Layer2.class, new All());
    l2s = persist.getObjects(Layer2.class, new All());
    assertEquals(1, l2s.size());
    // it should not be possible to delete l3, since it is part of l2.
    List<Layer3> l3s = persist.getObjects(Layer3.class, new All());
    assertEquals(1, l3s.size());

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    l2s = persist.getObjects(Layer2.class, new All());
    assertEquals(1, l2s.size());
    // it should not be possible to delete l3, since it is part of l2.
    List<Layer3> l3s = persist.getObjects(Layer3.class, new All());
    assertEquals(1, l3s.size());
    persist.deleteObjects(Layer3.class, new All());
    l3s = persist.getObjects(Layer3.class, new All());
    assertEquals(1, l3s.size());
    // it should be possible to delete l1.
    List<Layer1> l1s = persist.getObjects(Layer1.class, new All());
    assertEquals(1, l1s.size());

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    l3s = persist.getObjects(Layer3.class, new All());
    assertEquals(1, l3s.size());
    // it should be possible to delete l1.
    List<Layer1> l1s = persist.getObjects(Layer1.class, new All());
    assertEquals(1, l1s.size());
    persist.deleteObjects(Layer1.class, new All());
    l1s = persist.getObjects(Layer1.class, new All());
    assertEquals(0, l1s.size());
    // deleting l1 should remove l2 and l3.
    l3s = persist.getObjects(Layer3.class, new All());
    assertEquals(0, l3s.size());

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    persist.saveObject(l1.getLayer2());
    persist.close();


    persist = new PersistenceManager(driver, database, login, password);
    // delete all self-containing objects
    persist.deleteObjects(Layer1.class, new All());
    persist.deleteObjects(Layer2.class, new All());
    List<Layer2> objects = persist.getObjects(Layer2.class, new All());


    // make sure no Layer2 objects remain
    assertEquals(0, objects.size());

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    persist.close();


    persist = new PersistenceManager(driver, database, login, password);
    // delete all self-containing objects
    persist.deleteObjects(Layer1.class, new All());
    persist.deleteObjects(Layer2.class, new All());
    List<Layer2> objects = persist.getObjects(Layer2.class, new All());


    // make sure no Layer2 objects remain
    assertEquals(0, objects.size());
  }

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