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.knowledgebase.service.impl; import aQute.bnd.annotation.ProviderType; import com.liferay.knowledgebase.DuplicateKBFolderNameException; import com.liferay.knowledgebase.InvalidKBFolderNameException; import com.liferay.knowledgebase.NoSuchFolderException; import com.liferay.knowledgebase.model.KBFolder; import com.liferay.knowledgebase.model.KBFolderConstants; import com.liferay.knowledgebase.service.base.KBFolderLocalServiceBaseImpl; import com.liferay.knowledgebase.util.KnowledgeBaseUtil; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.model.User; import com.liferay.portal.service.ServiceContext; import java.util.Collection; import java.util.Date; import java.util.HashSet; import java.util.List; import java.util.Set; /** * @author Brian Wing Shun Chan */ @ProviderType public class KBFolderLocalServiceImpl extends KBFolderLocalServiceBaseImpl { @Override public KBFolder addKBFolder(long userId, long groupId, long parentResourceClassNameId, long parentResourcePrimKey, String name, String description, ServiceContext serviceContext) throws PortalException { // KB folder User user = userPersistence.findByPrimaryKey(userId); Date now = new Date(); validateName(groupId, parentResourcePrimKey, name); validateParent(parentResourceClassNameId, parentResourcePrimKey); long kbFolderId = counterLocalService.increment(); KBFolder kbFolder = kbFolderPersistence.create(kbFolderId); kbFolder.setUuid(serviceContext.getUuid()); kbFolder.setGroupId(groupId); kbFolder.setCompanyId(user.getCompanyId()); kbFolder.setUserId(userId); kbFolder.setUserName(user.getFullName()); kbFolder.setCreateDate(now); kbFolder.setModifiedDate(now); kbFolder.setParentKBFolderId(parentResourcePrimKey); kbFolder.setName(name); kbFolder.setUrlTitle(getUniqueUrlTitle(groupId, parentResourcePrimKey, kbFolderId, name)); kbFolder.setDescription(description); kbFolderPersistence.update(kbFolder); // Resources if (serviceContext.isAddGroupPermissions() || serviceContext.isAddGuestPermissions()) { addKBFolderResources(kbFolder, serviceContext.isAddGroupPermissions(), serviceContext.isAddGuestPermissions()); } else { addKBFolderResources(kbFolder, serviceContext.getGroupPermissions(), serviceContext.getGuestPermissions()); } return kbFolder; } @Override public KBFolder deleteKBFolder(long kbFolderId) throws PortalException { KBFolder kbFolder = kbFolderPersistence.findByPrimaryKey(kbFolderId); kbArticleLocalService.deleteKBArticles(kbFolder.getGroupId(), kbFolder.getKbFolderId()); List<KBFolder> childKBFolders = kbFolderPersistence.findByG_P(kbFolder.getGroupId(), kbFolder.getKbFolderId()); for (KBFolder childKBFolder : childKBFolders) { deleteKBFolder(childKBFolder.getKbFolderId()); } return kbFolderPersistence.remove(kbFolder); } @Override public KBFolder fetchKBFolderByUrlTitle(long groupId, long parentKbFolderId, String urlTitle) throws PortalException { return kbFolderPersistence.fetchByG_P_UT(groupId, parentKbFolderId, urlTitle); } @Override public KBFolder getKBFolderByUrlTitle(long groupId, long parentKbFolderId, String urlTitle) throws PortalException { return kbFolderPersistence.findByG_P_UT(groupId, parentKbFolderId, urlTitle); } @Override public List<KBFolder> getKBFolders(long groupId, long parentKBFolderId, int start, int end) throws PortalException { return kbFolderPersistence.findByG_P(groupId, parentKBFolderId, start, end); } @Override public int getKBFoldersCount(long groupId, long parentKBFolderId) throws PortalException { return kbFolderPersistence.countByG_P(groupId, parentKBFolderId); } @Override public void moveKBFolder(long kbFolderId, long parentKBFolderId) throws PortalException { KBFolder kbFolder = kbFolderPersistence.findByPrimaryKey(kbFolderId); if (parentKBFolderId != KBFolderConstants.DEFAULT_PARENT_FOLDER_ID) { KBFolder parentKBFolder = kbFolderPersistence.findByPrimaryKey(parentKBFolderId); validateParent(kbFolder, parentKBFolder); parentKBFolderId = parentKBFolder.getKbFolderId(); } kbFolder.setParentKBFolderId(parentKBFolderId); kbFolderPersistence.update(kbFolder); } @Override public KBFolder updateKBFolder(long parentResourceClassNameId, long parentResourcePrimKey, long kbFolderId, String name, String description) throws PortalException { validateParent(parentResourceClassNameId, parentResourcePrimKey); KBFolder kbFolder = kbFolderPersistence.findByPrimaryKey(kbFolderId); kbFolder.setModifiedDate(new Date()); kbFolder.setParentKBFolderId(parentResourcePrimKey); kbFolder.setName(name); kbFolder.setDescription(description); return kbFolderPersistence.update(kbFolder); } protected void addKBFolderResources(KBFolder kbFolder, boolean addGroupPermissions, boolean addGuestPermissions) throws PortalException { resourceLocalService.addResources(kbFolder.getCompanyId(), kbFolder.getGroupId(), kbFolder.getUserId(), KBFolder.class.getName(), kbFolder.getKbFolderId(), false, addGroupPermissions, addGuestPermissions); } protected void addKBFolderResources(KBFolder kbFolder, String[] groupPermissions, String[] guestPermissions) throws PortalException { resourceLocalService.addModelResources(kbFolder.getCompanyId(), kbFolder.getGroupId(), kbFolder.getUserId(), KBFolder.class.getName(), kbFolder.getKbFolderId(), groupPermissions, guestPermissions); } protected void getSubfolderIds(KBFolder parentKBFolder, Collection<Long> kbFolderIds) { Collection<KBFolder> kbFolders = kbFolderPersistence.findByG_P(parentKBFolder.getGroupId(), parentKBFolder.getKbFolderId()); for (KBFolder kbFolder : kbFolders) { getSubfolderIds(kbFolder, kbFolderIds); } kbFolderIds.add(parentKBFolder.getKbFolderId()); } protected String getUniqueUrlTitle(long groupId, long parentKbFolderId, long kbFolderId, String name) { String urlTitle = KnowledgeBaseUtil.getUrlTitle(kbFolderId, name); String uniqueUrlTitle = urlTitle; KBFolder kbFolder = null; for (int i = 1; kbFolder != null; i++) { uniqueUrlTitle = urlTitle + StringPool.DASH + i; kbFolder = kbFolderPersistence.fetchByG_P_UT(groupId, parentKbFolderId, uniqueUrlTitle); } return uniqueUrlTitle; } protected void validateName(long groupId, long parentKBFolderId, String name) throws PortalException { if (Validator.isNull(name)) { throw new InvalidKBFolderNameException("KB folder name is null"); } KBFolder kbFolder = kbFolderPersistence.fetchByG_P_N(groupId, parentKBFolderId, name); if (kbFolder != null) { throw new DuplicateKBFolderNameException( String.format("A KB folder with name %s already exists", name)); } } protected void validateParent(KBFolder kbFolder, KBFolder parentKBFolder) throws PortalException { if (kbFolder.getGroupId() != parentKBFolder.getGroupId()) { throw new NoSuchFolderException(String.format("No KB folder with KB folder ID %s found in group %s", parentKBFolder.getKbFolderId(), kbFolder.getGroupId())); } Set<Long> subfolderIds = new HashSet<Long>(); getSubfolderIds(kbFolder, subfolderIds); if (subfolderIds.contains(parentKBFolder.getKbFolderId())) { throw new InvalidKBFolderNameException( String.format("Cannot move KBFolder %s inside its descendant KBFolder %s", kbFolder.getKbFolderId(), parentKBFolder.getKbFolderId())); } } protected void validateParent(long parentResourceClassNameId, long parentResourcePrimKey) throws PortalException { long kbFolderClassNameId = classNameLocalService.getClassNameId(KBFolderConstants.getClassName()); KBFolder parentKBFolder = null; if (parentResourceClassNameId == kbFolderClassNameId) { if (parentResourcePrimKey == KBFolderConstants.DEFAULT_PARENT_FOLDER_ID) { return; } parentKBFolder = kbFolderPersistence.fetchByPrimaryKey(parentResourcePrimKey); } if (parentKBFolder == null) { throw new NoSuchFolderException( String.format("No KB folder found with KB folder ID %", parentResourcePrimKey)); } } }