net.riezebos.thoth.user.Group.java Source code

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Here is the source code for net.riezebos.thoth.user.Group.java

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/* Copyright (c) 2016 W.T.J. Riezebos
 *
 * 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 net.riezebos.thoth.user;

import java.util.HashSet;
import java.util.Set;

import com.fasterxml.jackson.annotation.JsonIgnore;

public class Group extends Identity implements Cloneable {
    private static final long serialVersionUID = 1L;
    private Set<Permission> permissions = new HashSet<>();
    @JsonIgnore
    private Set<Identity> members = new HashSet<>();
    @JsonIgnore
    private Set<Permission> cachedEffectivePermissions = null;

    public Group(String identifier) {
        super(identifier);
    }

    public Group(long id, String identifier) {
        super(id, identifier);
    }

    @Override
    public Group clone() {
        Group result = (Group) super.clone();
        result.members = new HashSet<>(members);
        result.permissions = new HashSet<>(permissions);
        return result;
    }

    public Set<Identity> getMembers() {
        return members;
    }

    public Set<Permission> getPermissions() {
        return permissions;
    }

    public void grantPermission(Permission permission) {
        permissions.add(permission);
    }

    public void revokePermission(Permission permission) {
        permissions.remove(permission);
    }

    public void addMember(Identity identity) {
        members.add(identity);
        identity.registerMembership(this);
    }

    public void removeMember(Identity identity) {
        members.remove(identity);
        identity.unregisterMembership(this);
    }

    public void clearPermissions() {
        permissions.clear();
    }

    public void addPermissions(Set<Permission> permissions) {
        this.permissions.addAll(permissions);
    }

    @JsonIgnore
    @Override
    public Set<Permission> getEffectivePermissions() {
        if (cachedEffectivePermissions == null) {
            Set<Permission> permissions = new HashSet<>(getPermissions());
            for (Group group : getMemberships())
                permissions.addAll(group.getEffectivePermissions());
            cachedEffectivePermissions = permissions;
        }
        return cachedEffectivePermissions;
    }

    @JsonIgnore
    @Override
    public String getTypeName() {
        return "group";
    }

    @Override
    public boolean isAdministrator() {
        return false;
    }

}