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products/Sources/formale Sprachen/Java/Tomcat/java/org/apache/catalina/users/ (Apache Software Stiftung Version 2.4.65^©) Datei vom 10.10.2023 mit Größe 5 kB

Quelle GenericGroup.java Sprache: JAVA

/*
* 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
*
* @author Craig R. McClanahan
*/
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

    /**
     * Return the set of {@link Role}s assigned specifically to this group.
     */
    @Override
    public Iterator<Role> getRoles() {
        return roles.iterator();
    }

    /**
     * Return the {@link UserDatabase} within which this Group is defined.
     */
    @Override
    public UserDatabase getUserDatabase() {
        return this.database;
    }

    /**
     * Return the set of {@link org.apache.catalina.User}s that are members of this group.
     */
    @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

    /**
     * Add a new {@link Role} to those assigned specifically to this group.
     *
     * @param role The new role
     */
    @Override
    public void addRole(Role role) {
        if (roles.addIfAbsent(role)) {
            database.modifiedGroup(this);
        }
    }

    /**
     * Is this group specifically assigned the specified {@link Role}?
     *
     * @param role The role to check
     */
    @Override
    public boolean isInRole(Role role) {
        return roles.contains(role);
    }

    /**
     * Remove a {@link Role} from those assigned to this group.
     *
     * @param role The old role
     */
    @Override
    public void removeRole(Role role) {
        if (roles.remove(role)) {
            database.modifiedGroup(this);
        }
    }

    /**
     * Remove all {@link Role}s from those assigned to this group.
     */
    @Override
    public void removeRoles() {
        if (!roles.isEmpty()) {
            roles.clear();
            database.modifiedGroup(this);
        }
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof GenericGroup) {
            GenericGroup<?> group = (GenericGroup<?>) obj;
            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;
    }
}

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