/*
* Copyright (C) 2012 Red Hat, Inc. and/or its affiliates.
*
* 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 org.jboss.errai.security.shared.api;
import java.io.Serializable;
import java.util.HashSet;
import org.jboss.errai.common.client.api.annotations.Portable;
import org.jboss.errai.security.shared.api.identity.User;
/**
* Represents a group a {@link User} can be part of for the purpose of access control.
*
* <p>
* The default implementation of this group in Errai is {@link GroupImpl}, but a different
* implementation may be used so long as:
* <ul>
* <li>It is {@link Portable}.
* <li>It overrides the {@link Object#equals(Object)} method (used to compare groups between
* {@link User} and a secured resource).
* <li>It overrides the {@link Object#hashCode()} method so that equal groups have the same hash.
* (This is important if you use the default {@link User} implementation, which stores groups in a
* {@link HashSet}.)
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
public interface Group extends Serializable {
/**
* @return The name of this group. This should <b>not</b> be used for comparing instances.
*/
String getName();
}