本文整理了Java中com.vaadin.data.provider.Query.<init>方法的一些代码示例，展示了Query.<init>的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query.<init>方法的具体详情如下：
包路径：com.vaadin.data.provider.Query
类名称：Query
方法名：<init>

Query.<init>介绍

[英]Constructs a Query for all rows from 0 to Integer#MAX_VALUEwithout sorting and filtering.
[中]为从0到整数#MAX_值的所有行构造一个查询，无需排序和筛选。

代码示例

代码示例来源：origin: com.vaadin/vaadin-server

/**
 * Fetch all items from the given data provider.
 *
 * @since 8.1
 * @param dataProvider
 *            the data provider to fetch from
 * @return all items in this data provider
 */
private Stream<T> fetchAll(DataProvider<T, ?> dataProvider) {
  return dataProvider.fetch(new Query<>());
}

代码示例来源：origin: com.vaadin/vaadin-server

/**
 * Fetches a list of items from the DataProvider.
 *
 * @param offset
 *            the starting index of the range
 * @param limit
 *            the max number of results
 * @return the list of items in given range
 *
 * @since 8.1
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public List<T> fetchItemsWithRange(int offset, int limit) {
  return (List<T>) getDataProvider().fetch(new Query(offset, limit,
      backEndSorting, inMemorySorting, filter))
      .collect(Collectors.toList());
}

代码示例来源：origin: com.vaadin/vaadin-server

private Query<T, F> mixInSortOrders(Query<T, F> query) {
  if (sortOrders.isEmpty()) {
    return query;
  }
  Set<String> sortedPropertyNames = query.getSortOrders().stream()
      .map(SortOrder::getSorted).collect(Collectors.toSet());
  List<QuerySortOrder> combinedSortOrders = Stream
      .concat(query.getSortOrders().stream(),
          sortOrders.stream()
              .filter(order -> !sortedPropertyNames
                  .contains(order.getSorted())))
      .collect(Collectors.toList());
  return new Query<>(query.getOffset(), query.getLimit(),
      combinedSortOrders, query.getInMemorySorting(),
      query.getFilter().orElse(null));
}

代码示例来源：origin: com.vaadin/vaadin-server

/**
 * Writes the data source items to a design. Hierarchical select components
 * should override this method to only write the root items.
 *
 * @param design
 *            the element into which to insert the items
 * @param context
 *            the DesignContext instance used in writing
 */
protected void writeItems(Element design, DesignContext context) {
  internalGetDataProvider().fetch(new Query<>())
      .forEach(item -> writeItem(design, item, context));
}

代码示例来源：origin: com.vaadin/vaadin-server

/**
 * Writes the data contained in this grid. Used when serializing a grid to
 * its declarative representation, if
 * {@link DesignContext#shouldWriteData(Component)} returns {@code true} for
 * the grid that is being written.
 *
 * @since 8.1
 *
 * @param body
 *            the body element to write the declarative representation of
 *            data to
 * @param designContext
 *            the design context
 *
 * @since 8.1
 */
protected void writeData(Element body, DesignContext designContext) {
  getDataProvider().fetch(new Query<>())
      .forEach(item -> writeRow(body, item, designContext));
}

代码示例来源：origin: com.vaadin/vaadin-server

/**
 * Getter method for finding the size of DataProvider. Can be overridden by
 * a subclass that uses a specific type of DataProvider and/or query.
 *
 * @return the size of data provider with current filter
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public int getDataProviderSize() {
  return getDataProvider().size(new Query(getFilter()));
}

代码示例来源：origin: com.vaadin/vaadin-server

@Override
public Stream<T> fetch(Query<T, F> t) {
  return dataProvider.fetch(new Query<>(t.getOffset(), t.getLimit(),
      t.getSortOrders(), t.getInMemorySorting(), getFilter(t)));
}

代码示例来源：origin: com.vaadin/vaadin-server

@Override
public int size(Query<T, F> t) {
  return dataProvider.size(new Query<>(t.getOffset(), t.getLimit(),
      t.getSortOrders(), t.getInMemorySorting(), getFilter(t)));
}

代码示例来源：origin: com.holon-platform.vaadin/holon-vaadin

@Override
public void selectAll() {
  getDataProvider().ifPresent(dp -> {
    Stream<ITEM> allItemsStream = dp.fetch(new Query<>());
    LinkedHashSet<ITEM> allItems = new LinkedHashSet<>();
    allItemsStream.forEach(allItems::add);
    getInternalField().setValue(allItems);
  });
}

代码示例来源：origin: info.magnolia.ui/magnolia-ui-admincentral

@Test
  public void getItems() throws Exception {
    // GIVEN WHEN
    dataProvider.filterByCategory(PulseItemCategory.ALL_TASKS);

    Query query = new Query<Task, Void>(0, 9, Collections.emptyList(), null, null);
    List<Task> items = (List<Task>) dataProvider.fetchFromBackEnd(query).collect(Collectors.toList());

    dataProvider.filterByCategory(PulseItemCategory.UNCLAIMED);
    query = new Query<Task, Void>(0, 3, ImmutableList.of(new QuerySortOrder(TaskConstants.ID, SortDirection.DESCENDING)), null, null);
    List<Task> itemsSorted = (List<Task>) dataProvider.fetchFromBackEnd(query).collect(Collectors.toList());

    // THEN
    assertThat(items.size(), is(9));
    assertThat(items, containsIdsInOrder(1, 2, 3, 4, 5, 6, 7, 8, 9));

    assertThat(itemsSorted.size(), is(3));
    assertThat(itemsSorted, containsIdsInOrder(3, 2, 1));
  }
}

代码示例来源：origin: info.magnolia.ui/magnolia-ui-admincentral

@Test
public void getItems() throws Exception {
  // GIVEN WHEN
  dataProvider.filterByCategory(PulseItemCategory.ALL_MESSAGES);
  Query query = new Query<Message, Void>(0, 9, Collections.emptyList(), null, null);
  List<Message> items = (List<Message>) dataProvider.fetchFromBackEnd(query).collect(Collectors.toList());
  dataProvider.filterByCategory(PulseItemCategory.PROBLEM);
  query = new Query<Message, Void>(0, 6, ImmutableList.of(new QuerySortOrder(MessageConstants.ID, SortDirection.DESCENDING)), null, null);
  List<Message> itemsSorted = (List<Message>) dataProvider.fetchFromBackEnd(query).collect(Collectors.toList());
  // THEN
  assertThat(items.size(), is(9));
  assertThat(items, containsIdsInOrder(1, 2, 3, 4, 5, 6, 7, 8, 9));
  assertThat(itemsSorted.size(), is(6));
  assertThat(itemsSorted, containsIdsInOrder(6, 5, 4, 3, 2, 1));
}

代码示例来源：origin: info.magnolia.ui/magnolia-ui-admincentral

@Test
  public void getItemsWithGrouping() throws Exception {
    // GIVEN
    dataProvider.filterByCategory(PulseItemCategory.INFO);
    dataProvider.setGrouping(true);

    Query query = new Query<Message, Void>(0, 3, ImmutableList.of(new QuerySortOrder(MessageConstants.ID, SortDirection.ASCENDING)), null, null);

    // WHEN
    List<Message> items = (List<Message>) dataProvider.fetchFromBackEnd(query).collect(Collectors.toList());

    // THEN no additional data for grouping
    assertThat(items.size(), is(3));
    assertThat(items, containsIdsInOrder(7, 8, 9));
  }
}

代码示例来源：origin: jpos/jPOS-EE

private HorizontalLayout createFilters() {
  HorizontalLayout controls = new HorizontalLayout();
  controls.setWidth("100%");
  journals = new JournalsCombo(true);
  journals.setValue(journals.getDataProvider().fetch(new Query<>()).findFirst().orElse(null));
  controls.addComponents(journals, dateRangeComponent);
  controls.setComponentAlignment(dateRangeComponent, Alignment.MIDDLE_LEFT);
  controls.setComponentAlignment(journals, Alignment.MIDDLE_RIGHT);
  controls.setExpandRatio(journals, 0f);
  controls.setExpandRatio(dateRangeComponent, 1f);
  controls.setMargin(new MarginInfo(false,true,true,true));
  controls.setSpacing(true);
  return controls;
}

代码示例来源：origin: jpos/jPOS-EE

@Override
public void setGridGetters() {
  Grid<Consumer> g = getGrid();
  g.addColumn(Consumer::getId).setId("id");
  g.addColumn(consumer -> consumer.getRolesAsString()).setId("roles");
  g.addColumn(Consumer::getStartDate).setId("startDate");
  g.addColumn(Consumer::getEndDate).setId("endDate");
  g.addColumn(consumer -> consumer.getUser().getNickAndId()).setId("user");
  g.addColumn(Consumer::isActive).setId("active");
  g.addColumn(Consumer::isDeleted).setId("deleted");
  //select first item on user combobox
  userComboBox.setValue(userComboBox.getDataProvider().fetch(new Query<>()).findFirst().orElse(null));
}