Java tutorial
/** * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package org.liferay.jukebox.portlet; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.servlet.SessionMessages; import com.liferay.portal.kernel.upload.UploadPortletRequest; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.security.auth.PrincipalException; import com.liferay.portal.service.ServiceContext; import com.liferay.portal.service.ServiceContextFactory; import com.liferay.portal.util.PortalUtil; import com.liferay.portlet.trash.util.TrashUtil; import com.liferay.util.bridges.mvc.MVCPortlet; import java.io.InputStream; import java.util.HashMap; import java.util.Map; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import org.liferay.jukebox.AlbumNameException; import org.liferay.jukebox.ArtistNameException; import org.liferay.jukebox.DuplicatedSongException; import org.liferay.jukebox.SongNameException; import org.liferay.jukebox.model.Album; import org.liferay.jukebox.model.Artist; import org.liferay.jukebox.model.Song; import org.liferay.jukebox.service.AlbumServiceUtil; import org.liferay.jukebox.service.ArtistServiceUtil; import org.liferay.jukebox.service.SongServiceUtil; /** * @author Julio Camarero * @author Sergio Gonzlez * @author Eudaldo Alonso */ public class JukeboxPortlet extends MVCPortlet { public void addAlbum(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); long artistId = ParamUtil.getLong(uploadPortletRequest, "artistId"); String name = ParamUtil.getString(uploadPortletRequest, "name"); int year = ParamUtil.getInteger(uploadPortletRequest, "year"); InputStream inputStream = uploadPortletRequest.getFileAsStream("file"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Album.class.getName(), uploadPortletRequest); try { AlbumServiceUtil.addAlbum(artistId, name, year, inputStream, serviceContext); SessionMessages.add(request, "albumAdded"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof AlbumNameException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/albums/edit_album.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } public void addArtist(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); String name = ParamUtil.getString(uploadPortletRequest, "name"); String bio = ParamUtil.getString(uploadPortletRequest, "bio"); InputStream inputStream = uploadPortletRequest.getFileAsStream("file"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Artist.class.getName(), uploadPortletRequest); try { ArtistServiceUtil.addArtist(name, bio, inputStream, serviceContext); SessionMessages.add(request, "artistAdded"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof ArtistNameException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/artists/edit_artist.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } public void deleteArtist(ActionRequest request, ActionResponse response) throws Exception { long artistId = ParamUtil.getLong(request, "artistId"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Artist.class.getName(), request); try { ArtistServiceUtil.deleteArtist(artistId, serviceContext); SessionMessages.add(request, "artistDeleted"); sendRedirect(request, response); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); response.setRenderParameter("jspPage", "/html/error.jsp"); } } public void updateArtist(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); long artistId = ParamUtil.getLong(uploadPortletRequest, "artistId"); String name = ParamUtil.getString(uploadPortletRequest, "name"); String bio = ParamUtil.getString(uploadPortletRequest, "bio"); InputStream inputStream = uploadPortletRequest.getFileAsStream("file"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Artist.class.getName(), uploadPortletRequest); try { ArtistServiceUtil.updateArtist(artistId, name, bio, inputStream, serviceContext); SessionMessages.add(request, "artistUpdated"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof ArtistNameException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/artists/edit_artist.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } public void addSong(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); long albumId = ParamUtil.getLong(uploadPortletRequest, "albumId"); String name = ParamUtil.getString(uploadPortletRequest, "name"); InputStream songInputStream = uploadPortletRequest.getFileAsStream("songFile"); String songFileName = uploadPortletRequest.getFileName("songFile"); InputStream lyricsInputStream = uploadPortletRequest.getFileAsStream("lyricsFile"); String lyricsFileName = uploadPortletRequest.getFileName("lyricsFile"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Song.class.getName(), uploadPortletRequest); try { SongServiceUtil.addSong(albumId, name, songFileName, songInputStream, lyricsFileName, lyricsInputStream, serviceContext); SessionMessages.add(request, "songAdded"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof SongNameException || e instanceof DuplicatedSongException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/songs/edit_song.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } public void deleteSong(ActionRequest request, ActionResponse response) throws Exception { long songId = ParamUtil.getLong(request, "songId"); boolean moveToTrash = ParamUtil.getBoolean(request, "moveToTrash"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Song.class.getName(), request); try { if (moveToTrash) { Song song = SongServiceUtil.moveSongToTrash(songId); Map<String, String[]> data = new HashMap<String, String[]>(); data.put("deleteEntryClassName", new String[] { Song.class.getName() }); data.put("deleteEntryTitle", new String[] { TrashUtil.getOriginalTitle(song.getName()) }); data.put("restoreEntryIds", new String[] { String.valueOf(songId) }); SessionMessages.add(request, PortalUtil.getPortletId(request) + SessionMessages.KEY_SUFFIX_DELETE_SUCCESS_DATA, data); SessionMessages.add(request, PortalUtil.getPortletId(request) + SessionMessages.KEY_SUFFIX_HIDE_DEFAULT_SUCCESS_MESSAGE); } else { SongServiceUtil.deleteSong(songId, serviceContext); SessionMessages.add(request, "songDeleted"); } sendRedirect(request, response); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); response.setRenderParameter("jspPage", "/html/error.jsp"); } } public void restoreSong(ActionRequest request, ActionResponse response) throws Exception { long[] restoreEntryIds = StringUtil.split(ParamUtil.getString(request, "restoreEntryIds"), 0L); for (long restoreEntryId : restoreEntryIds) { SongServiceUtil.restoreSongFromTrash(restoreEntryId); } } public void updateSong(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); long albumId = ParamUtil.getLong(uploadPortletRequest, "albumId"); long songId = ParamUtil.getLong(uploadPortletRequest, "songId"); String name = ParamUtil.getString(uploadPortletRequest, "name"); InputStream songInputStream = uploadPortletRequest.getFileAsStream("songFile"); String songFileName = uploadPortletRequest.getFileName("songFile"); InputStream lyricsInputStream = uploadPortletRequest.getFileAsStream("lyricsFile"); String lyricsFileName = uploadPortletRequest.getFileName("lyricsFile"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Song.class.getName(), uploadPortletRequest); try { SongServiceUtil.updateSong(songId, albumId, name, songFileName, songInputStream, lyricsFileName, lyricsInputStream, serviceContext); SessionMessages.add(request, "songUpdated"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof SongNameException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/songs/edit_song.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } public void deleteAlbum(ActionRequest request, ActionResponse response) throws Exception { long albumId = ParamUtil.getLong(request, "albumId"); boolean moveToTrash = ParamUtil.getBoolean(request, "moveToTrash"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Album.class.getName(), request); try { if (moveToTrash) { Album album = AlbumServiceUtil.moveAlbumToTrash(albumId); Map<String, String[]> data = new HashMap<String, String[]>(); data.put("deleteEntryClassName", new String[] { Album.class.getName() }); data.put("deleteEntryTitle", new String[] { album.getName() }); data.put("restoreEntryIds", new String[] { String.valueOf(albumId) }); SessionMessages.add(request, PortalUtil.getPortletId(request) + SessionMessages.KEY_SUFFIX_DELETE_SUCCESS_DATA, data); SessionMessages.add(request, PortalUtil.getPortletId(request) + SessionMessages.KEY_SUFFIX_HIDE_DEFAULT_SUCCESS_MESSAGE); } else { AlbumServiceUtil.deleteAlbum(albumId, serviceContext); SessionMessages.add(request, "albumDeleted"); } sendRedirect(request, response); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); response.setRenderParameter("jspPage", "/html/error.jsp"); } } public void restoreAlbum(ActionRequest request, ActionResponse response) throws Exception { long[] restoreEntryIds = StringUtil.split(ParamUtil.getString(request, "restoreEntryIds"), 0L); for (long restoreEntryId : restoreEntryIds) { AlbumServiceUtil.restoreAlbumFromTrash(restoreEntryId); } } public void updateAlbum(ActionRequest request, ActionResponse response) throws Exception { UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request); long albumId = ParamUtil.getLong(uploadPortletRequest, "albumId"); long artistId = ParamUtil.getLong(uploadPortletRequest, "artistId"); String name = ParamUtil.getString(uploadPortletRequest, "name"); int year = ParamUtil.getInteger(uploadPortletRequest, "year"); InputStream inputStream = uploadPortletRequest.getFileAsStream("file"); ServiceContext serviceContext = ServiceContextFactory.getInstance(Album.class.getName(), uploadPortletRequest); try { AlbumServiceUtil.updateAlbum(albumId, artistId, name, year, inputStream, serviceContext); SessionMessages.add(request, "albumUpdated"); String redirect = ParamUtil.getString(uploadPortletRequest, "redirect"); response.sendRedirect(redirect); } catch (Exception e) { SessionErrors.add(request, e.getClass().getName()); if (e instanceof AlbumNameException || e instanceof PrincipalException) { response.setRenderParameter("jspPage", "/html/albums/edit_album.jsp"); } else { response.setRenderParameter("jspPage", "/html/error.jsp"); } } } }