Java tutorial
/** * Copyright (c) 2000-present 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 com.liferay.announcements.uad.exporter; import com.liferay.announcements.constants.AnnouncementsPortletKeys; import com.liferay.announcements.kernel.model.AnnouncementsFlag; import com.liferay.announcements.uad.constants.AnnouncementsUADConstants; import com.liferay.announcements.uad.entity.AnnouncementsFlagUADEntity; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream; import com.liferay.portal.kernel.model.Group; import com.liferay.portal.kernel.portletfilerepository.PortletFileRepositoryUtil; import com.liferay.portal.kernel.repository.model.Folder; import com.liferay.portal.kernel.util.ContentTypes; import com.liferay.portal.kernel.util.StringPool; import com.liferay.user.associated.data.aggregator.UADEntityAggregator; import com.liferay.user.associated.data.entity.UADEntity; import com.liferay.user.associated.data.exception.UADEntityException; import com.liferay.user.associated.data.exception.UADEntityExporterException; import com.liferay.user.associated.data.exporter.BaseUADEntityExporter; import com.liferay.user.associated.data.exporter.UADEntityExporter; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.util.List; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; /** * @author Noah Sherrill */ @Component(immediate = true, property = { "model.class.name=" + AnnouncementsUADConstants.CLASS_NAME_ANNOUNCEMENTS_FLAG }, service = UADEntityExporter.class) public class AnnouncementsFlagUADEntityExporter extends BaseUADEntityExporter { @Override public void export(UADEntity uadEntity) throws PortalException { AnnouncementsFlag announcementsFlag = _getAnnouncementsFlag(uadEntity); String json = getJSON(announcementsFlag); Folder folder = getFolder(announcementsFlag.getCompanyId(), AnnouncementsPortletKeys.ANNOUNCEMENTS, _FOLDER_NAME); try { InputStream is = new UnsyncByteArrayInputStream(json.getBytes(StringPool.UTF8)); PortletFileRepositoryUtil.addPortletFileEntry(folder.getGroupId(), announcementsFlag.getUserId(), Group.class.getName(), folder.getGroupId(), AnnouncementsPortletKeys.ANNOUNCEMENTS, folder.getFolderId(), is, uadEntity.getUADEntityId() + ".json", ContentTypes.APPLICATION_JSON, false); } catch (UnsupportedEncodingException uee) { throw new UADEntityExporterException(uee); } } @Override protected List<UADEntity> getUADEntities(long userId) { return _uadEntityAggregator.getUADEntities(userId); } private AnnouncementsFlag _getAnnouncementsFlag(UADEntity uadEntity) throws PortalException { _validate(uadEntity); AnnouncementsFlagUADEntity announcementsFlagUADEntity = (AnnouncementsFlagUADEntity) uadEntity; return announcementsFlagUADEntity.getAnnouncementsFlag(); } private void _validate(UADEntity uadEntity) throws PortalException { if (!(uadEntity instanceof AnnouncementsFlagUADEntity)) { throw new UADEntityException(); } } private static final String _FOLDER_NAME = "UADExport"; @Reference(target = "(model.class.name=" + AnnouncementsUADConstants.CLASS_NAME_ANNOUNCEMENTS_FLAG + ")") private UADEntityAggregator _uadEntityAggregator; }