Java tutorial
/* * Copyright 2004, 2005, 2006 Acegi Technology Pty Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package sample.contact.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.support.ApplicationObjectSupport; import org.springframework.security.acls.domain.BasePermission; import org.springframework.security.acls.domain.ObjectIdentityImpl; import org.springframework.security.acls.domain.PrincipalSid; import org.springframework.security.acls.model.*; import org.springframework.transaction.annotation.Transactional; import sample.contact.dao.ContactDao; import sample.contact.model.Contact; import sample.contact.service.ContactService; import java.util.List; import java.util.Random; import static sample.contact.Utils.getUsername; /** * Concrete implementation of {@link ContactService}. * * @author Ben Alex */ @Transactional public class ContactServiceImpl extends ApplicationObjectSupport implements ContactService { // ~ Instance fields // ================================================================================================ @Autowired private ContactDao contactDao; @Autowired private MutableAclService mutableAclService; private int counter = 1000; public void addPermission(Contact contact, Sid recipient, Permission permission) { MutableAcl acl; ObjectIdentity oid = new ObjectIdentityImpl(Contact.class, contact.getId()); try { acl = (MutableAcl) mutableAclService.readAclById(oid); } catch (NotFoundException nfe) { acl = mutableAclService.createAcl(oid); } acl.insertAce(acl.getEntries().size(), permission, recipient, true); mutableAclService.updateAcl(acl); logger.debug("Added permission " + permission + " for Sid " + recipient + " contact " + contact); } public void create(Contact contact) { // Create the Contact itself contact.setId(new Long(counter++)); contactDao.create(contact); // Grant the current principal administrative permission to the contact addPermission(contact, new PrincipalSid(getUsername()), BasePermission.ADMINISTRATION); if (logger.isDebugEnabled()) { logger.debug( "Created contact " + contact + " and granted admin permission to recipient " + getUsername()); } } public void delete(Contact contact) { contactDao.delete(contact.getId()); // Delete the ACL information as well ObjectIdentity oid = new ObjectIdentityImpl(Contact.class, contact.getId()); mutableAclService.deleteAcl(oid, false); if (logger.isDebugEnabled()) { logger.debug("Deleted contact " + contact + " including ACL permissions"); } } public void deletePermission(Contact contact, Sid recipient, Permission permission) { ObjectIdentity oid = new ObjectIdentityImpl(Contact.class, contact.getId()); MutableAcl acl = (MutableAcl) mutableAclService.readAclById(oid); // Remove all permissions associated with this particular recipient (string // equality to KISS) List<AccessControlEntry> entries = acl.getEntries(); for (int i = 0; i < entries.size(); i++) { if (entries.get(i).getSid().equals(recipient) && entries.get(i).getPermission().equals(permission)) { acl.deleteAce(i); } } mutableAclService.updateAcl(acl); if (logger.isDebugEnabled()) { logger.debug("Deleted contact " + contact + " ACL permissions for recipient " + recipient); } } @Transactional(readOnly = true) public List<Contact> getAll() { logger.debug("Returning all contacts"); return contactDao.findAll(); } @Transactional(readOnly = true) public Contact getById(Long id) { if (logger.isDebugEnabled()) { logger.debug("Returning contact with id: " + id); } return contactDao.getById(id); } /** * This is a public method. */ @Transactional(readOnly = true) public Contact getRandomContact() { logger.debug("Returning random contact"); Random rnd = new Random(); List<Contact> contacts = contactDao.findAll(); int getNumber = rnd.nextInt(contacts.size()); return contacts.get(getNumber); } public void setMutableAclService(MutableAclService mutableAclService) { this.mutableAclService = mutableAclService; } public void update(Contact contact) { contactDao.update(contact); logger.debug("Updated contact " + contact); } }