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.message.boards.comment.internal; import com.liferay.message.boards.kernel.model.MBCategoryConstants; import com.liferay.message.boards.kernel.model.MBDiscussion; import com.liferay.message.boards.kernel.model.MBMessage; import com.liferay.message.boards.kernel.model.MBMessageDisplay; import com.liferay.message.boards.kernel.model.MBThread; import com.liferay.message.boards.kernel.model.MBTreeWalker; import com.liferay.message.boards.kernel.service.MBDiscussionLocalService; import com.liferay.message.boards.kernel.service.MBMessageLocalService; import com.liferay.message.boards.kernel.service.MBThreadLocalService; import com.liferay.message.boards.kernel.util.comparator.MessageThreadComparator; import com.liferay.portal.kernel.comment.Comment; import com.liferay.portal.kernel.comment.CommentConstants; import com.liferay.portal.kernel.comment.CommentManager; import com.liferay.portal.kernel.comment.Discussion; import com.liferay.portal.kernel.comment.DiscussionComment; import com.liferay.portal.kernel.comment.DiscussionPermission; import com.liferay.portal.kernel.comment.DiscussionStagingHandler; import com.liferay.portal.kernel.comment.DuplicateCommentException; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.security.permission.PermissionChecker; import com.liferay.portal.kernel.service.ServiceContext; import com.liferay.portal.kernel.util.Function; import com.liferay.portal.kernel.util.PortalUtil; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.workflow.WorkflowConstants; import com.liferay.ratings.kernel.model.RatingsEntry; import com.liferay.ratings.kernel.model.RatingsStats; import com.liferay.ratings.kernel.service.RatingsEntryLocalService; import com.liferay.ratings.kernel.service.RatingsStatsLocalService; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; /** * @author Andr de Oliveira * @author Alexander Chow * @author Raymond Aug */ @Component(service = CommentManager.class) public class MBCommentManagerImpl implements CommentManager { @Override public long addComment(long userId, long groupId, String className, long classPK, String body, Function<String, ServiceContext> serviceContextFunction) throws PortalException { MBMessageDisplay messageDisplay = _mbMessageLocalService.getDiscussionMessageDisplay(userId, groupId, className, classPK, WorkflowConstants.STATUS_APPROVED); MBThread thread = messageDisplay.getThread(); List<MBMessage> messages = _mbMessageLocalService.getThreadMessages(thread.getThreadId(), WorkflowConstants.STATUS_APPROVED); for (MBMessage message : messages) { String messageBody = message.getBody(); if (messageBody.equals(body)) { throw new DuplicateCommentException(body); } } ServiceContext serviceContext = serviceContextFunction.apply(MBMessage.class.getName()); MBMessage mbMessage = _mbMessageLocalService.addDiscussionMessage(userId, StringPool.BLANK, groupId, className, classPK, thread.getThreadId(), thread.getRootMessageId(), StringPool.BLANK, body, serviceContext); return mbMessage.getMessageId(); } @Override public long addComment(long userId, long groupId, String className, long classPK, String userName, String subject, String body, Function<String, ServiceContext> serviceContextFunction) throws PortalException { MBMessageDisplay mbMessageDisplay = _mbMessageLocalService.getDiscussionMessageDisplay(userId, groupId, className, classPK, WorkflowConstants.STATUS_APPROVED); MBThread mbThread = mbMessageDisplay.getThread(); ServiceContext serviceContext = serviceContextFunction.apply(MBMessage.class.getName()); MBMessage mbMessage = _mbMessageLocalService.addDiscussionMessage(userId, userName, groupId, className, classPK, mbThread.getThreadId(), mbThread.getRootMessageId(), subject, body, serviceContext); return mbMessage.getMessageId(); } @Override public long addComment(long userId, String className, long classPK, String userName, long parentCommentId, String subject, String body, Function<String, ServiceContext> serviceContextFunction) throws PortalException { MBMessage parentMessage = _mbMessageLocalService.getMessage(parentCommentId); ServiceContext serviceContext = serviceContextFunction.apply(MBMessage.class.getName()); MBMessage mbMessage = _mbMessageLocalService.addDiscussionMessage(userId, userName, parentMessage.getGroupId(), className, classPK, parentMessage.getThreadId(), parentCommentId, subject, body, serviceContext); return mbMessage.getMessageId(); } @Override public void addDiscussion(long userId, long groupId, String className, long classPK, String userName) throws PortalException { _mbMessageLocalService.addDiscussionMessage(userId, userName, groupId, className, classPK, WorkflowConstants.ACTION_PUBLISH); } @Override public void deleteComment(long commentId) throws PortalException { _mbMessageLocalService.deleteDiscussionMessage(commentId); } @Override public void deleteDiscussion(String className, long classPK) throws PortalException { _mbMessageLocalService.deleteDiscussionMessages(className, classPK); } @Override public void deleteGroupComments(long groupId) throws PortalException { _mbThreadLocalService.deleteThreads(groupId, MBCategoryConstants.DISCUSSION_CATEGORY_ID); } @Override public Comment fetchComment(long commentId) { return new MBCommentImpl(_mbMessageLocalService.fetchMBMessage(commentId)); } @Override public DiscussionComment fetchDiscussionComment(long userId, long commentId) throws PortalException { MBMessage mbMessage = _mbMessageLocalService.fetchMBMessage(commentId); if (mbMessage == null) { return null; } MBMessageDisplay messageDisplay = _mbMessageLocalService.getDiscussionMessageDisplay(userId, mbMessage.getGroupId(), mbMessage.getClassName(), mbMessage.getClassPK(), WorkflowConstants.STATUS_ANY, new MessageThreadComparator()); return getDiscussionComment(userId, messageDisplay); } @Override public int getCommentsCount(String className, long classPK) { long classNameId = PortalUtil.getClassNameId(className); return _mbMessageLocalService.getDiscussionMessagesCount(classNameId, classPK, WorkflowConstants.STATUS_APPROVED); } @Override public Discussion getDiscussion(long userId, long groupId, String className, long classPK, Function<String, ServiceContext> serviceContextFunction) throws PortalException { MBMessageDisplay messageDisplay = _mbMessageLocalService.getDiscussionMessageDisplay(userId, groupId, className, classPK, WorkflowConstants.STATUS_ANY, new MessageThreadComparator()); DiscussionComment rootDiscussionComment = getDiscussionComment(userId, messageDisplay); MBTreeWalker treeWalker = messageDisplay.getTreeWalker(); List<MBMessage> messages = treeWalker.getMessages(); return new MBDiscussionImpl(rootDiscussionComment, messageDisplay.isDiscussionMaxComments(), messages.size() - 1); } @Override public DiscussionPermission getDiscussionPermission(PermissionChecker permissionChecker) { return new MBDiscussionPermissionImpl(permissionChecker); } @Override public DiscussionStagingHandler getDiscussionStagingHandler() { return new MBDiscussionStagingHandler(); } @Override public boolean hasDiscussion(String className, long classPK) { MBDiscussion discussion = _mbDiscussionLocalService.fetchDiscussion(className, classPK); if (discussion == null) { return false; } return true; } @Override public void moveDiscussionToTrash(String className, long classPK) { List<MBMessage> messages = _mbMessageLocalService.getMessages(className, classPK, WorkflowConstants.STATUS_APPROVED); for (MBMessage message : messages) { message.setStatus(WorkflowConstants.STATUS_IN_TRASH); _mbMessageLocalService.updateMBMessage(message); } } @Override public void restoreDiscussionFromTrash(String className, long classPK) { List<MBMessage> messages = _mbMessageLocalService.getMessages(className, classPK, WorkflowConstants.STATUS_IN_TRASH); for (MBMessage message : messages) { message.setStatus(WorkflowConstants.STATUS_APPROVED); _mbMessageLocalService.updateMBMessage(message); } } @Reference(unbind = "-") public void setMBDiscussionLocalService(MBDiscussionLocalService mbDiscussionLocalService) { _mbDiscussionLocalService = mbDiscussionLocalService; } @Reference(unbind = "-") public void setMBMessageLocalService(MBMessageLocalService mbMessageLocalService) { _mbMessageLocalService = mbMessageLocalService; } @Reference(unbind = "-") public void setRatingsEntryLocalService(RatingsEntryLocalService ratingsEntryLocalService) { _ratingsEntryLocalService = ratingsEntryLocalService; } @Reference(unbind = "-") public void setRatingsStatsLocalService(RatingsStatsLocalService ratingsStatsLocalService) { _ratingsStatsLocalService = ratingsStatsLocalService; } @Override public void subscribeDiscussion(long userId, long groupId, String className, long classPK) throws PortalException { _mbDiscussionLocalService.subscribeDiscussion(userId, groupId, className, classPK); } @Override public void unsubscribeDiscussion(long userId, String className, long classPK) throws PortalException { _mbDiscussionLocalService.unsubscribeDiscussion(userId, className, classPK); } @Override public long updateComment(long userId, String className, long classPK, long commentId, String subject, String body, Function<String, ServiceContext> serviceContextFunction) throws PortalException { ServiceContext serviceContext = serviceContextFunction.apply(MBMessage.class.getName()); MBMessage message = _mbMessageLocalService.updateDiscussionMessage(userId, commentId, className, classPK, subject, body, serviceContext); return message.getMessageId(); } protected DiscussionComment getDiscussionComment(long userId, MBMessageDisplay messageDisplay) { MBTreeWalker treeWalker = messageDisplay.getTreeWalker(); List<MBMessage> messages = treeWalker.getMessages(); List<RatingsEntry> ratingsEntries = Collections.emptyList(); List<RatingsStats> ratingsStats = Collections.emptyList(); if (messages.size() > 1) { List<Long> classPKs = new ArrayList<>(); for (MBMessage curMessage : messages) { if (!curMessage.isRoot()) { classPKs.add(curMessage.getMessageId()); } } ratingsEntries = _ratingsEntryLocalService.getEntries(userId, CommentConstants.getDiscussionClassName(), classPKs); ratingsStats = _ratingsStatsLocalService.getStats(CommentConstants.getDiscussionClassName(), classPKs); } return new MBDiscussionCommentImpl(treeWalker.getRoot(), treeWalker, ratingsEntries, ratingsStats); } @Reference(unbind = "-") protected void setMBThreadLocalService(MBThreadLocalService mbThreadLocalService) { _mbThreadLocalService = mbThreadLocalService; } private MBDiscussionLocalService _mbDiscussionLocalService; private MBMessageLocalService _mbMessageLocalService; private MBThreadLocalService _mbThreadLocalService; private RatingsEntryLocalService _ratingsEntryLocalService; private RatingsStatsLocalService _ratingsStatsLocalService; }