+++ /dev/null
-/*
- * Copyright (C) 2016 Roland Haeder
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.mxchange.addressbook.model.shared;
-
-import java.text.MessageFormat;
-import java.util.List;
-import java.util.Objects;
-import javax.ejb.Stateless;
-import javax.persistence.NoResultException;
-import javax.persistence.Query;
-import org.mxchange.jcoreee.database.BaseDatabaseBean;
-import org.mxchange.jjobs.exceptions.UserAlreadySharingAddressbookException;
-import org.mxchange.jjobs.model.addressbook.Addressbook;
-import org.mxchange.jjobs.model.addressbook.shared.AddressbookShare;
-import org.mxchange.jjobs.model.addressbook.shared.ShareableAddressbook;
-import org.mxchange.jjobs.model.shared.SharedAddressbooksSessionBeanRemote;
-import org.mxchange.jusercore.model.user.User;
-
-/**
- * A stateless bean for handling address book sharing
- * <p>
- * @author Roland Haeder
- */
-@Stateless (name = "share", mappedName = "ejb/stateless-share", description = "A stateless bean for handling shared addressbooks")
-public class SharedAddressbooksSessionBean extends BaseDatabaseBean implements SharedAddressbooksSessionBeanRemote {
-
- /**
- * Serial number
- */
- private static final long serialVersionUID = 136_984_697_285_694_710L;
-
- @Override
- @SuppressWarnings ("unchecked")
- public List<ShareableAddressbook> allSharedAddressbooks (final User user) {
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("allSharedAddressbooks: user={0} - CALLED!", user)); //NOI18N
-
- // Is user null?
- if (null == user) {
- // Throw NPE
- throw new NullPointerException("user is null"); //NOI18N
- } else if (user.getUserId() == null) {
- // Null userId is not allowed
- throw new NullPointerException("user.userId is null"); //NOI18N
- } else if (user.getUserId() < 1) {
- // Not allowed value
- throw new IllegalArgumentException(MessageFormat.format("user.UserId={0} is an invalid value", user.getUserId())); //NOI18N
- }
-
- // Get named query
- Query query = this.getEntityManager().createNamedQuery("SearchUserSharedAddressbooks", List.class); //NOI18N
-
- // Set parameter
- query.setParameter("user", user); //NOI18N
-
- // Return full list
- List<ShareableAddressbook> list = query.getResultList();
-
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("allSharedAddressbooks: list.size()={0} - EXIT!", list.size()));
-
- // Return list
- return list;
- }
-
- @Override
- public Boolean isUserSharingAddressbooks (final User user) {
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("isUserSharingAddressbooks: user={0} - CALLED!", user)); //NOI18N
-
- // Is user null?
- if (null == user) {
- // Throw NPE
- throw new NullPointerException("user is null"); //NOI18N
- } else if (user.getUserId() == null) {
- // Null userId is not allowed
- throw new NullPointerException("user.userId is null"); //NOI18N
- } else if (user.getUserId() < 1) {
- // Not allowed value
- throw new IllegalArgumentException(MessageFormat.format("user.UserId={0} is an invalid value", user.getUserId())); //NOI18N
- }
-
- // Get results
- List<ShareableAddressbook> list = this.allSharedAddressbooks(user);
-
- // Debug message
- this.getLoggerBeanLocal().logDebug(MessageFormat.format("isUserSharingAddressbooks: list.size()={0}", list.size())); //NOI18N
-
- // Is it not empty?
- Boolean isSharing = (!list.isEmpty());
-
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("isUserSharingAddressbooks: iSharing={0} - EXIT!", isSharing)); //NOI18N
-
- // Return it
- return isSharing;
- }
-
- @Override
- public ShareableAddressbook startSharing (final User sharee, final Addressbook addressbook) throws UserAlreadySharingAddressbookException {
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("startSharing: sharee={0},addressbook={1} - CALLED!", sharee, addressbook)); //NOI18N
-
- // Check all conditions
- if (null == sharee) {
- // Throw NPE
- throw new NullPointerException("sharee is null"); //NOI18N
- } else if (sharee.getUserId() == null) {
- // Throw NPE again
- throw new NullPointerException("sharee.userId is null"); //NOI18N
- } else if (sharee.getUserId() < 1) {
- // Invalid id number
- throw new IllegalStateException(MessageFormat.format("sharee.userId={0} is invalid", sharee.getUserId())); //NOI18N
- } else if (null == addressbook) {
- // Throw NPE again
- throw new NullPointerException("addressbook is null"); //NOI18N
- } else if (addressbook.getAddressbookId() == null) {
- // Throw NPE again
- throw new NullPointerException("addressbook.addressbookId is null"); //NOI18N
- } else if (addressbook.getAddressbookId() < 1) {
- // Invalid id number
- throw new IllegalArgumentException(MessageFormat.format("addressbook.addressbookId={0} is invalid.", addressbook.getAddressbookId())); //NOI18N
- } else if (Objects.equals(addressbook.getAddressbookUser(), sharee)) {
- // Sharing with yourself!
- throw new IllegalStateException("User tries to share with himself."); //NOI18N
- }
-
- // Is the entry already there?
- if (this.isUserAlreadySharingAddressbook(addressbook, sharee)) {
- // Abort here
- throw new UserAlreadySharingAddressbookException(addressbook, sharee);
- }
-
- // All fine so far, then create the instance
- ShareableAddressbook share = new AddressbookShare(addressbook, sharee);
-
- // Debug message
- this.getLoggerBeanLocal().logDebug(MessageFormat.format("startSharing: share={0}", share)); //NOI18N
-
- // Persist it
- this.getEntityManager().persist(share);
-
- // Flush to get id number
- this.getEntityManager().flush();
-
- // Return updated instance
- return share;
- }
-
- /**
- * Checks whether the owner of the given address book is already sharing it
- * with the sharee.
- * <p>
- * @param addressbook Address book to be shared with
- * @param sharee User sharee instance
- * <p>
- * @return Wether the address book is already shared with the sharee
- */
- private boolean isUserAlreadySharingAddressbook (final Addressbook addressbook, final User sharee) {
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("isUserAlreadySharingAddressbook: addressbook={0},sharee={1} - CALLED!", addressbook, sharee)); //NOI18N
-
- // Get named query
- Query query = this.getEntityManager().createNamedQuery("SearchShareeAddressbookShare", AddressbookShare.class); //NOI18N
-
- // Set parameter
- query.setParameter("addressbook", addressbook); //NOI18N
- query.setParameter("sharee", sharee); //NOI18N
-
- // Default is not found
- boolean isFound = false;
-
- // Try it
- try {
- // Get single instance
- ShareableAddressbook share = (ShareableAddressbook) query.getSingleResult();
-
- // Debug message
- this.getLoggerBeanLocal().logDebug(MessageFormat.format("isUserAlreadySharingAddressbook: share={0} - FOUND!", share)); //NOI18N
-
- // Set found
- isFound = true;
- } catch (final NoResultException ex) {
- // Not found, log exception
- this.getLoggerBeanLocal().logDebug(MessageFormat.format("isUserAlreadySharingAddressbook: Notfound. Exception: {0}", ex)); //NOI18N
- }
-
- // Trace message
- this.getLoggerBeanLocal().logTrace(MessageFormat.format("isUserAlreadySharingAddressbook: isFound={0} - EXIT!", isFound)); //NOI18N
-
- // Return it
- return isFound;
- }
-}
projects / jjobs-ejb.git / commitdiff