Examples of com.db4o.ObjectContainer.query()

com.db4o.ObjectContainer.query()
creates a new S.O.D.A. {@link Query Query}.

Use {@link #queryByExample(Object)} for simple Query-By-Example.

{@link #query(Predicate) Native queries } are the recommended main db4o queryinterface.

@return a new Query object @throws DatabaseClosedException db4o database file was closed or failed to open.

      assertTrue(sm.getSearchConditions().size() == otherSM.getSearchConditions().size());
    }


    /* Assert Preference */
    List<IPreference> preferences = db.query(IPreference.class);
    assertEquals(preferences.size(), defragmentedDb.query(IPreference.class).size());
    for (IPreference preference : preferences) {
      Query query = defragmentedDb.query();
      query.constrain(preference.getClass());
      query.descend("fId").constrain(Long.valueOf(preference.getId())); //$NON-NLS-1$

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    /* Assert Preference */
    List<IPreference> preferences = db.query(IPreference.class);
    assertEquals(preferences.size(), defragmentedDb.query(IPreference.class).size());
    for (IPreference preference : preferences) {
      Query query = defragmentedDb.query();
      query.constrain(preference.getClass());
      query.descend("fId").constrain(Long.valueOf(preference.getId())); //$NON-NLS-1$


      List<IPreference> result = query.execute();
      assertEquals(1, result.size());

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        assertTrue(Arrays.equals(preference.getLongs(), otherPreference.getLongs()));
    }


    /* Assert Label */
    List<ILabel> labels = db.query(ILabel.class);
    assertEquals(labels.size(), defragmentedDb.query(ILabel.class).size());
    for (ILabel label : labels) {
      Query query = defragmentedDb.query();
      query.constrain(label.getClass());
      query.descend("fId").constrain(Long.valueOf(label.getId())); //$NON-NLS-1$

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    /* Assert Label */
    List<ILabel> labels = db.query(ILabel.class);
    assertEquals(labels.size(), defragmentedDb.query(ILabel.class).size());
    for (ILabel label : labels) {
      Query query = defragmentedDb.query();
      query.constrain(label.getClass());
      query.descend("fId").constrain(Long.valueOf(label.getId())); //$NON-NLS-1$


      List<INewsBin> result = query.execute();
      assertEquals(1, result.size());

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      assertEquals(1, result.size());
      assertTrue(((Label) label).isIdentical((ILabel) result.get(0)));
    }


    /* Assert Counter */
    assertEquals(db.query(Counter.class).get(0).getValue(), defragmentedDb.query(Counter.class).get(0).getValue());


    /* Assert Search Filter */
    List<ISearchFilter> filters = db.query(ISearchFilter.class);
    assertEquals(filters.size(), defragmentedDb.query(ISearchFilter.class).size());
    for (ISearchFilter filter : filters) {

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    /* Assert Counter */
    assertEquals(db.query(Counter.class).get(0).getValue(), defragmentedDb.query(Counter.class).get(0).getValue());


    /* Assert Search Filter */
    List<ISearchFilter> filters = db.query(ISearchFilter.class);
    assertEquals(filters.size(), defragmentedDb.query(ISearchFilter.class).size());
    for (ISearchFilter filter : filters) {
      Query query = defragmentedDb.query();
      query.constrain(filter.getClass());
      query.descend("fId").constrain(Long.valueOf(filter.getId())); //$NON-NLS-1$

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    /* Assert Search Filter */
    List<ISearchFilter> filters = db.query(ISearchFilter.class);
    assertEquals(filters.size(), defragmentedDb.query(ISearchFilter.class).size());
    for (ISearchFilter filter : filters) {
      Query query = defragmentedDb.query();
      query.constrain(filter.getClass());
      query.descend("fId").constrain(Long.valueOf(filter.getId())); //$NON-NLS-1$


      List<INewsBin> result = query.execute();
      assertEquals(1, result.size());

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      assertEquals(search.getSearchConditions().size(), otherSearch.getSearchConditions().size());
    }


    /* Assert Conditional Get */
    List<IConditionalGet> condGets = db.query(IConditionalGet.class);
    assertEquals(condGets.size(), defragmentedDb.query(IConditionalGet.class).size());
    for (IConditionalGet condGet : condGets) {
      Query query = defragmentedDb.query();
      query.constrain(condGet.getClass());
      query.descend("fLink").constrain(condGet.getLink().toString()); //$NON-NLS-1$

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    /* Assert Conditional Get */
    List<IConditionalGet> condGets = db.query(IConditionalGet.class);
    assertEquals(condGets.size(), defragmentedDb.query(IConditionalGet.class).size());
    for (IConditionalGet condGet : condGets) {
      Query query = defragmentedDb.query();
      query.constrain(condGet.getClass());
      query.descend("fLink").constrain(condGet.getLink().toString()); //$NON-NLS-1$


      List<IConditionalGet> result = query.execute();
      assertEquals(1, result.size());

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      assertEquals(condGet.getIfNoneMatch(), otherCondGet.getIfNoneMatch());
    }


    /* Assert EntityIdsByEventType */
    EntityIdsByEventType eventType = db.query(EntityIdsByEventType.class).get(0);
    EntityIdsByEventType otherEventType = defragmentedDb.query(EntityIdsByEventType.class).get(0);
    assertNotNull(eventType);
    assertNotNull(otherEventType);
    assertEquals(eventType, otherEventType);


    /* Assert NewsCounter / NewsCounterItem */

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