com.greenpepper.samples.application.system.AccountManager Maven / Gradle / Ivy
/**
* Copyright (c) 2009 Pyxis Technologies inc.
*
* This 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 2 of the License, or
* (at your option) any later version.
*
* This software 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA,
* or see the FSF site: http://www.fsf.org.
*
* @author oaouattara
* @version $Id: $Id
*/
package com.greenpepper.samples.application.system;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class AccountManager
{
private static final String ADMINISTRATOR_GROUP_ID = "administrator";
private static final String USER_GROUP_ID = "user";
private static final String ADMIN_USER_ID = "admin";
private static List allGroups = new ArrayList();
private static List allUsers = new ArrayList();
private static Map> allAssociations = new HashMap>();
static
{
// Pre-existing data (mandatory)
allGroups.add(ADMINISTRATOR_GROUP_ID);
allGroups.add(USER_GROUP_ID);
allUsers.add(ADMIN_USER_ID);
allAssociations.put(ADMIN_USER_ID, Arrays.asList(ADMINISTRATOR_GROUP_ID));
/**
groups.add("cartoon");
users.add("bart.simpson");
users.add("homer.simpson");
associations.put("bart.simpson", Arrays.asList("cartoon"));
associations.put("homer.simpson", Arrays.asList("cartoon"));
/**/
}
/**
* insertGroup.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean insertGroup(String name)
{
if (isGroupExist(name))
{
throw new SystemException(String.format("Group '%s' already exist.", name));
}
return allGroups.add(name);
}
/**
* deleteGroup.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean deleteGroup(String name)
{
if (ADMINISTRATOR_GROUP_ID.equals(name))
{
throw new SystemException(String.format("Cannot delete '%s' group.", ADMINISTRATOR_GROUP_ID));
}
if (USER_GROUP_ID.equals(name))
{
throw new SystemException(String.format("Cannot delete '%s' group.", USER_GROUP_ID));
}
if (!isGroupExist(name))
{
throw new SystemException(String.format("Group '%s' does not exist.", name));
}
if (getGroupUserCount(name) > 0)
{
throw new SystemException("Cannot delete a group containing users.");
}
return allGroups.remove(name);
}
/**
* Getter for the field allGroups.
*
* @return an array of {@link java.lang.String} objects.
*/
public String[] getAllGroups()
{
String[] groups = new String[allGroups.size()];
allGroups.toArray(groups);
return groups;
}
/**
* insertUser.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean insertUser(String name)
{
if (isUserExist(name))
{
throw new SystemException(String.format("User '%s' already exist.", name));
}
return allUsers.add(name);
}
/**
* deleteUser.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean deleteUser(String name)
{
if (ADMIN_USER_ID.equals(name))
{
throw new SystemException(String.format("Cannot delete '%s' user.", ADMIN_USER_ID));
}
if (!isUserExist(name))
{
throw new SystemException(String.format("User '%s' does not exist.", name));
}
allAssociations.remove(name);
return allUsers.remove(name);
}
/**
* Getter for the field allUsers.
*
* @return an array of {@link java.lang.String} objects.
*/
public String[] getAllUsers()
{
String[] users = new String[allUsers.size()];
allUsers.toArray(users);
return users;
}
/**
* associateUserWithGroup.
*
* @param user a {@link java.lang.String} object.
* @param group a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean associateUserWithGroup(String user, String group)
{
if (!isUserExist(user))
{
throw new SystemException(String.format("User '%s' does not exist.", user));
}
if (!isGroupExist(group))
{
throw new SystemException(String.format("Group '%s' does not exist.", group));
}
List userGroups = allAssociations.get(user);
if (userGroups == null)
{
userGroups = new ArrayList();
}
else if (userGroups.contains(group))
{
return false;
}
userGroups.add(group);
allAssociations.put(user, userGroups);
return true;
}
/**
* isUserAssociatedToGroup.
*
* @param user a {@link java.lang.String} object.
* @param group a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean isUserAssociatedToGroup(String user, String group)
{
if (!isUserExist(user))
{
throw new SystemException(String.format("User '%s' does not exist.", user));
}
if (!isGroupExist(group))
{
throw new SystemException(String.format("Group '%s' does not exist.", group));
}
List userGroups = allAssociations.get(user);
return userGroups != null && userGroups.contains(group);
}
/**
* isGroupExist.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean isGroupExist(String name)
{
return allGroups.contains(name);
}
/**
* isUserExist.
*
* @param name a {@link java.lang.String} object.
* @return a boolean.
*/
public boolean isUserExist(String name)
{
return allUsers.contains(name);
}
private int getGroupUserCount(String name)
{
int count = 0;
for (String user : allAssociations.keySet())
{
List groups = allAssociations.get(user);
if (groups != null && groups.contains(name))
{
count++;
}
}
return count;
}
}