Java Query.setFields方法代码示例

import com.google.gdata.client.Query; //导入方法依赖的package包/类
/**
 * Demonstrates use of partial query to retrieve album title and location
 * information for user's albums.
 */
private void printAlbumLocation(String uname)
    throws IOException, ServiceException {
  String albumsUrl = API_PREFIX + uname;
  String fields = "entry(title,gphoto:id,gphoto:location)";

  Query albumQuery = new Query(new URL(albumsUrl));
  albumQuery.setFields(fields);

  AlbumFeed feed = service.query(albumQuery, AlbumFeed.class);
  for (GphotoEntry entry : feed.getEntries()) {
    if (entry instanceof AlbumEntry) {
      AlbumEntry albumEntry = (AlbumEntry) entry;
      OUT.println(albumEntry.getGphotoId() + ":"
          + albumEntry.getTitle().getPlainText()
          + " (" + albumEntry.getLocation()  + ")");
    }
  }
}
 

import com.google.gdata.client.Query; //导入方法依赖的package包/类
/**
 * Demonstrates update operation using partial patch to update location
 * string for specified album.
 */
private void updateAlbumLocation(String uname)
    throws IOException, ServiceException {
  OUT.println("Enter album id to update:");
  String albumId = IN.readLine();

  // Get the current album entry
  String albumEntryUrl = API_PREFIX + uname + "/" + albumId;
  String fields = "@gd:etag,gphoto:location";
  Query patchQuery = new Query(new URL(albumEntryUrl));
  patchQuery.setFields(fields);
  AlbumEntry entry = service.getEntry(patchQuery.getUrl(), AlbumEntry.class);
  OUT.println("Current location: " + entry.getLocation());

  // Update the location in the album entry
  OUT.println("Specify new location: ");
  String newLocation = IN.readLine();
  entry.setLocation(newLocation);
  entry.setSelectedFields("gphoto:location");
  AlbumEntry updated = service.patch(new URL(albumEntryUrl), fields, entry);
  OUT.println("Location set to: " + updated.getLocation());
}
 

import com.google.gdata.client.Query; //导入方法依赖的package包/类
/**
 * Demonstrates use of partial query to retrieve album title and location
 * information for user's albums.
 */
private void printAlbumLocation(String uname) throws IOException, ServiceException {
	String albumsUrl = API_PREFIX + uname;
	String fields = "entry(title,gphoto:id,gphoto:location)";

	Query albumQuery = new Query(new URL(albumsUrl));
	albumQuery.setFields(fields);

	AlbumFeed feed = service.query(albumQuery, AlbumFeed.class);
	for (GphotoEntry entry : feed.getEntries()) {
		if (entry instanceof AlbumEntry) {
			AlbumEntry albumEntry = (AlbumEntry) entry;
			log.info(albumEntry.getGphotoId() + ":" + albumEntry.getTitle().getPlainText() + " ("
					+ albumEntry.getLocation() + ")");
		}
	}
}
 

import com.google.gdata.client.Query; //导入方法依赖的package包/类
/**
 * Demonstrates update operation using partial patch to update location
 * string for specified album.
 */
public void updateAlbumLocation(String uname, String albumId, String newLocation) throws IOException, ServiceException {
	
	// Get the current album entry
	String albumEntryUrl = API_PREFIX + uname + "/" + albumId;
	String fields = "@gd:etag,gphoto:location";
	Query patchQuery = new Query(new URL(albumEntryUrl));
	patchQuery.setFields(fields);
	AlbumEntry entry = service.getEntry(patchQuery.getUrl(), AlbumEntry.class);
	log.info("Current location: " + entry.getLocation());

	// Update the location in the album entry
	entry.setLocation(newLocation);
	entry.setSelectedFields("gphoto:location");
	AlbumEntry updated = service.patch(new URL(albumEntryUrl), fields, entry);
	log.info("Location set to: " + updated.getLocation());
}
 

import com.google.gdata.client.Query; //导入方法依赖的package包/类
/**
 * Updates user's response for a specific event using partial patch.
 *
 * @param uname username whose attendeeStatus need to be updated.
 */
private void updateAttendeeStatus(String uname)
    throws IOException, ServiceException {
  OUT.println("Enter the id of event to update: ");
  String eventId = IN.readLine();
  OUT.println("Enter event response (1:Yes, 2:No, 3:Maybe)");
  String selection;
  switch(readInt()) {
    case 1:
      selection = Who.AttendeeStatus.EVENT_ACCEPTED;
      break;
    case 2:
      selection = Who.AttendeeStatus.EVENT_DECLINED;
      break;
    case 3:
      selection = Who.AttendeeStatus.EVENT_TENTATIVE;
      break;
    default:
      OUT.println("Invalid selection.");
      return;
  }

  // URL of calendar entry to update.
  String eventEntryUrl = CALENDAR_FEEDS_PREFIX + uname
      + "/private/full/" + eventId;
  // Selection criteria to fetch only the attendee status of specified user.
  String selectAttendee =
      "@gd:etag,title,gd:who[@email='" + uname + "']";

  Query partialQuery = new Query(new URL(eventEntryUrl));
  partialQuery.setFields(selectAttendee);

  CalendarEventEntry event = service.getEntry(partialQuery.getUrl(),
      CalendarEventEntry.class);
  // The participant list will contain exactly one attendee matching
  // above partial query selection criteria.
  event.getParticipants().get(0).setAttendeeStatus(selection);

  // Field selection to update attendeeStatus only.
  String toUpdateFields = "gd:who/gd:attendeeStatus";

  // Make patch request which returns full representation for the event.
  event = service.patch(
      new URL(eventEntryUrl), toUpdateFields, event);

  // Print the updated attendee status.
  OUT.println(event.getTitle().getPlainText() + " updated to: "
      + event.getParticipants().get(0).getAttendeeStatus());
}