RoleComparator.java

/**
 * Copyright (c) 2008-2011 Sonatype, Inc.
 * All rights reserved. Includes the third-party code listed at http://www.sonatype.com/products/nexus/attributions.
 *
 * This program is free software: you can redistribute it and/or modify it only under the terms of the GNU Affero General
 * Public License Version 3 as published by the Free Software Foundation.
 *
 * This program 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 Affero General Public License Version 3
 * for more details.
 *
 * You should have received a copy of the GNU Affero General Public License Version 3 along with this program.  If not, see
 * http://www.gnu.org/licenses.
 *
 * Sonatype Nexus (TM) Open Source Version is available from Sonatype, Inc. Sonatype and Sonatype Nexus are trademarks of
 * Sonatype, Inc. Apache Maven is a trademark of the Apache Foundation. M2Eclipse is a trademark of the Eclipse Foundation.
 * All other trademarks are the property of their respective owners.
 */
package org.sonatype.nexus.test.utils;

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

import org.sonatype.security.model.CRole;

/**
 * This only works for equals...
 */
public class RoleComparator
    implements Comparator<CRole>
{

    public int compare( CRole role1, CRole role2 )
    {

        // quick outs
        if ( role1 == null || role2 == null )
        {
            return -1;
        }

        if ( role1 == role2 || role1.equals( role2 ) )
        {
            return 0;
        }

        if ( role1.getDescription() == null )
        {
            if ( role2.getDescription() != null )
            {
                return -1;
            }
        }
        else if ( !role1.getDescription().equals( role2.getDescription() ) )
        {
            return -1;
        }
        if ( role1.getId() == null )
        {
            if ( role2.getId() != null )
            {
                return -1;
            }
        }
        else if ( !role1.getId().equals( role2.getId() ) )
        {
            return -1;
        }
        /*
         * if ( role1.getModelEncoding() == null ) { if ( role2.getModelEncoding() != null ) return -1; } else if (
         * !role1.getModelEncoding().equals( role2.getModelEncoding() ) ) return -1;
         */
        if ( role1.getName() == null )
        {
            if ( role2.getName() != null )
            {
                return -1;
            }
        }
        else if ( !role1.getName().equals( role2.getName() ) )
        {
            return -1;
        }
        if ( role1.getPrivileges() == null )
        {
            if ( role2.getPrivileges() != null )
            {
                return -1;
            }
        }

        Set<String> role1Privileges = new HashSet<String>( role1.getPrivileges() );
        Set<String> role2Privileges = new HashSet<String>( role2.getPrivileges() );

        if ( !( role1Privileges.size() == role2Privileges.size() && role1Privileges.containsAll( role2Privileges ) ) )
        {
            return -1;
        }
        if ( role1.getRoles() == null || role1.getRoles().isEmpty() )
        {
            if ( role2.getRoles() == null || role2.getRoles().isEmpty() )
            {
                return 0;
            }
            else
            {
                return -1;
            }
        }

        Set<String> role1Roles = new HashSet<String>( role1.getRoles() );
        Set<String> role2Roles = new HashSet<String>( role2.getRoles() );

        if ( !( role1Roles.size() == role2Roles.size() && role1Roles.containsAll( role2Roles ) ) )
        {
            return -1;
        }
        return 0;
    }
}