/*
* The MIT License (MIT)
*
* Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.brienwheeler.svc.usergroups.impl;
import java.util.ArrayList;
import java.util.List;
import com.brienwheeler.lib.monitor.work.MonitoredWork;
import com.brienwheeler.lib.svc.GracefulShutdown;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.brienwheeler.lib.db.DbValidationUtils;
import com.brienwheeler.lib.svc.impl.SpringStoppableServiceBase;
import com.brienwheeler.lib.util.ValidationUtils;
import com.brienwheeler.svc.usergroups.DuplicateUserGroupException;
import com.brienwheeler.svc.usergroups.IUserGroupService;
import com.brienwheeler.svc.usergroups.domain.UserGroup;
import com.brienwheeler.svc.usergroups.domain.UserGroupMember;
import com.brienwheeler.svc.users.domain.User;
public class UserGroupService extends SpringStoppableServiceBase
implements IUserGroupService
{
private IUserGroupDao userGroupDao;
private IUserGroupMemberDao userGroupMemberDao;
@Required
public void setUserGroupDao(IUserGroupDao userGroupDao)
{
this.userGroupDao = userGroupDao;
}
@Required
public void setUserGroupMemberDao(IUserGroupMemberDao userGroupMemberDao)
{
this.userGroupMemberDao = userGroupMemberDao;
}
@Override
@Transactional
@MonitoredWork
@GracefulShutdown
public UserGroup createUserGroup(String groupName, String groupType)
{
groupName = ValidationUtils.assertNotEmpty(groupName, "groupName cannot be empty");
groupType = ValidationUtils.assertNotEmpty(groupType, "groupType cannot be empty");
if (findByNameAndType(groupName, groupType) != null)
throw new DuplicateUserGroupException("group already exists: " + groupName + "/" + groupType);
UserGroup userGroup = new UserGroup(groupName, groupType);
return userGroupDao.save(userGroup);
}
@Override
@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
@MonitoredWork
@GracefulShutdown
public UserGroup findByNameAndType(String groupName, String groupType)
{
groupName = ValidationUtils.assertNotEmpty(groupName, "groupName cannot be empty");
groupType = ValidationUtils.assertNotEmpty(groupType, "groupType cannot be empty");
return userGroupDao.findByNameAndType(groupName, groupType);
}
@Override
@Transactional
@MonitoredWork
@GracefulShutdown
public void addUserToGroup(UserGroup userGroup, User user)
{
DbValidationUtils.assertPersisted(userGroup);
DbValidationUtils.assertPersisted(user);
UserGroupMember existing = userGroupMemberDao.findForGroupAndUser(userGroup, user);
if (existing != null)
return;
UserGroupMember groupMember = new UserGroupMember(userGroup, user);
userGroupMemberDao.save(groupMember);
}
@Override
@Transactional
@MonitoredWork
@GracefulShutdown
public void removeUserFromGroup(UserGroup userGroup, User user)
{
DbValidationUtils.assertPersisted(userGroup);
DbValidationUtils.assertPersisted(user);
UserGroupMember existing = userGroupMemberDao.findForGroupAndUser(userGroup, user);
if (existing != null)
userGroupMemberDao.delete(existing);
}
@Override
@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
@MonitoredWork
@GracefulShutdown
public List<UserGroup> getGroupsForUser(User user)
{
DbValidationUtils.assertPersisted(user);
List<UserGroupMember> groupMemberList = userGroupMemberDao.findForUser(user);
ArrayList<UserGroup> groupList = new ArrayList<UserGroup>(groupMemberList.size());
for (UserGroupMember groupMember : groupMemberList)
groupList.add(groupMember.getUserGroup());
return groupList;
}
@Override
@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
@MonitoredWork
@GracefulShutdown
public List<UserGroup> getGroupsForUserAndType(User user, String groupType)
{
DbValidationUtils.assertPersisted(user);
ValidationUtils.assertNotEmpty(groupType, "groupType cannot be empty");
List<UserGroupMember> groupMemberList = userGroupMemberDao.findForUserAndType(user, groupType);
ArrayList<UserGroup> groupList = new ArrayList<UserGroup>(groupMemberList.size());
for (UserGroupMember groupMember : groupMemberList)
groupList.add(groupMember.getUserGroup());
return groupList;
}
@Override
public UserGroup getSingleGroupOfTypeForUser(User user, String groupType)
{
// validation done in getGroupsForUserAndType
List<UserGroup> userGroups = getGroupsForUserAndType(user, groupType);
if (userGroups.size() != 1)
throw new IllegalStateException("user " + user.getId() + " does not have exactly one UserGroup of type " +
groupType + " (" + userGroups.size() + ")");
return userGroups.get(0);
}
@Override
@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
@MonitoredWork
@GracefulShutdown
public List<User> getUsersForGroup(UserGroup userGroup)
{
DbValidationUtils.assertPersisted(userGroup);
List<UserGroupMember> groupMemberList = userGroupMemberDao.findForGroup(userGroup);
ArrayList<User> userList = new ArrayList<User>(groupMemberList.size());
for (UserGroupMember groupMember : groupMemberList)
userList.add(groupMember.getUser());
return userList;
}
}