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.comment.internal.jsonws; 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.DiscussionCommentIterator; import com.liferay.portal.kernel.comment.DiscussionPermission; import com.liferay.portal.kernel.dao.orm.QueryUtil; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.jsonwebservice.JSONWebService; import com.liferay.portal.kernel.model.Group; import com.liferay.portal.kernel.model.User; import com.liferay.portal.kernel.security.access.control.AccessControlled; import com.liferay.portal.kernel.security.permission.ActionKeys; import com.liferay.portal.kernel.security.permission.BaseModelPermissionCheckerUtil; import com.liferay.portal.kernel.service.BaseServiceImpl; import com.liferay.portal.kernel.service.GroupLocalService; import com.liferay.portal.kernel.service.ServiceContext; import com.liferay.portal.kernel.util.Function; import com.liferay.portal.kernel.workflow.WorkflowConstants; 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 Adolfo Prez */ @AccessControlled @Component(immediate = true, property = { "json.web.service.context.name=comment", "json.web.service.context.path=Comment" }, service = CommentManagerJSONWS.class) @JSONWebService public class CommentManagerJSONWS extends BaseServiceImpl { public long addComment(long groupId, String className, long classPK, String body) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); long companyId = getCompanyId(groupId); discussionPermission.checkAddPermission(companyId, groupId, className, classPK); return _commentManager.addComment(getUserId(), groupId, className, classPK, body, createServiceContextFunction(companyId)); } public void deleteComment(long commentId) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkDeletePermission(commentId); _commentManager.deleteComment(commentId); } public List<CommentJSONWS> getComments(long commentId, int start, int end) throws PortalException { DiscussionComment discussionComment = _commentManager.fetchDiscussionComment(getUserId(), commentId); DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkViewPermission(getCompanyId(discussionComment.getGroupId()), discussionComment.getGroupId(), discussionComment.getClassName(), discussionComment.getClassPK()); return getComments(discussionComment, start, end); } public List<CommentJSONWS> getComments(long groupId, String className, long classPK, int start, int end) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkViewPermission(getCompanyId(groupId), groupId, className, classPK); Discussion discussion = _commentManager.getDiscussion(getUserId(), groupId, className, classPK, createServiceContextFunction()); DiscussionComment rootDiscussionComment = discussion.getRootDiscussionComment(); return getComments(rootDiscussionComment, start, end); } public int getCommentsCount(long groupId, String className, long classPK) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkViewPermission(getCompanyId(groupId), groupId, className, classPK); return _commentManager.getCommentsCount(className, classPK); } public boolean hasDiscussion(long groupId, String className, long classPK) throws PortalException { BaseModelPermissionCheckerUtil.containsBaseModelPermission(getPermissionChecker(), groupId, className, classPK, ActionKeys.VIEW); return _commentManager.hasDiscussion(className, classPK); } public void subscribeDiscussion(long groupId, String className, long classPK) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkSubscribePermission(getCompanyId(groupId), groupId, className, classPK); _commentManager.subscribeDiscussion(getUserId(), groupId, className, classPK); } public void unsubscribeDiscussion(long groupId, String className, long classPK) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkSubscribePermission(getCompanyId(groupId), groupId, className, classPK); _commentManager.unsubscribeDiscussion(getUserId(), className, classPK); } public long updateComment(String className, long classPK, long commentId, String subject, String body) throws PortalException { DiscussionPermission discussionPermission = _commentManager.getDiscussionPermission(getPermissionChecker()); discussionPermission.checkUpdatePermission(commentId); return _commentManager.updateComment(getUserId(), className, classPK, commentId, subject, body, createServiceContextFunction(WorkflowConstants.ACTION_PUBLISH)); } protected Function<String, ServiceContext> createServiceContextFunction() { return new Function<String, ServiceContext>() { @Override public ServiceContext apply(String className) { return new ServiceContext(); } }; } protected Function<String, ServiceContext> createServiceContextFunction(final int workflowAction) { return new Function<String, ServiceContext>() { @Override public ServiceContext apply(String className) { ServiceContext serviceContext = new ServiceContext(); serviceContext.setWorkflowAction(workflowAction); return serviceContext; } }; } protected Function<String, ServiceContext> createServiceContextFunction(final long companyId) { return new Function<String, ServiceContext>() { @Override public ServiceContext apply(String className) { ServiceContext serviceContext = new ServiceContext(); serviceContext.setCompanyId(companyId); return serviceContext; } }; } protected List<CommentJSONWS> getAllComments(DiscussionCommentIterator threadDiscussionCommentIterator) { List<CommentJSONWS> commentJSONWSs = new ArrayList<>(); while (threadDiscussionCommentIterator.hasNext()) { CommentJSONWS commentJSONWS = new CommentJSONWS(threadDiscussionCommentIterator.next()); commentJSONWSs.add(commentJSONWS); } return commentJSONWSs; } protected List<CommentJSONWS> getComments(DiscussionComment discussionComment, int start, int end) { if (start == QueryUtil.ALL_POS) { start = 0; } DiscussionCommentIterator threadDiscussionCommentIterator = discussionComment .getThreadDiscussionCommentIterator(start); if (end == QueryUtil.ALL_POS) { return getAllComments(threadDiscussionCommentIterator); } int commentsCount = end - start; if (commentsCount <= 0) { return Collections.emptyList(); } List<CommentJSONWS> commentJSONWSs = new ArrayList<>(commentsCount); while (threadDiscussionCommentIterator.hasNext() && (commentsCount > 0)) { CommentJSONWS commentJSONWS = new CommentJSONWS(threadDiscussionCommentIterator.next()); commentJSONWSs.add(commentJSONWS); commentsCount--; } return commentJSONWSs; } protected long getCompanyId(long groupId) throws PortalException { Group group = _groupLocalService.getGroup(groupId); return group.getCompanyId(); } protected String getUserName() throws PortalException { User user = getUser(); return user.getFullName(); } @Reference(unbind = "-") protected void setCommentManager(CommentManager commentManager) { _commentManager = commentManager; } @Reference(unbind = "-") protected void setGroupLocalService(GroupLocalService groupLocalService) { _groupLocalService = groupLocalService; } private CommentManager _commentManager; private GroupLocalService _groupLocalService; }