/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.catalina.users;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.apache.catalina.Role;
import org.apache.catalina.User;
import org.apache.catalina.UserDatabase;
/**
* <p>
* Concrete implementation of {@link org.apache.catalina.Group} for a {@link UserDatabase}.
* </p>
*
* @param <UD> The specific type of UserDase with which this group is associated
*/
public class GenericGroup<UD extends UserDatabase> extends AbstractGroup {
// ----------------------------------------------------------- Constructors
/**
* Package-private constructor used by the factory method in {@link UserDatabase}.
*
* @param database The {@link UserDatabase} that owns this group
* @param groupname Group name of this group
* @param description Description of this group
* @param roles The roles of this group
*/
GenericGroup(UD database, String groupname, String description, List<Role> roles) {
super();
this.database = database;
this.groupname = groupname;
this.description = description;
if (roles != null) {
this.roles.addAll(roles);
}
}
// ----------------------------------------------------- Instance Variables
/**
* The {@link UserDatabase} that owns this group.
*/
protected final UD database;
/**
* The set of {@link Role}s associated with this group.
*/
protected final CopyOnWriteArrayList<Role> roles = new CopyOnWriteArrayList<>();
// ------------------------------------------------------------- Properties
@Override
public Iterator<Role> getRoles() {
return roles.iterator();
}
@Override
public UserDatabase getUserDatabase() {
return this.database;
}
@Override
public Iterator<User> getUsers() {
List<User> results = new ArrayList<>();
Iterator<User> users = database.getUsers();
while (users.hasNext()) {
User user = users.next();
if (user.isInGroup(this)) {
results.add(user);
}
}
return results.iterator();
}
// --------------------------------------------------------- Public Methods
@Override
public void addRole(Role role) {
if (roles.addIfAbsent(role)) {
database.modifiedGroup(this);
}
}
@Override
public boolean isInRole(Role role) {
return roles.contains(role);
}
@Override
public void removeRole(Role role) {
if (roles.remove(role)) {
database.modifiedGroup(this);
}
}
@Override
public void removeRoles() {
if (!roles.isEmpty()) {
roles.clear();
database.modifiedGroup(this);
}
}
@Override
public boolean equals(Object obj) {
if (obj instanceof GenericGroup<?> group) {
return group.database == database && groupname.equals(group.getGroupname());
}
return super.equals(obj);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((database == null) ? 0 : database.hashCode());
result = prime * result + ((groupname == null) ? 0 : groupname.hashCode());
return result;
}
}