/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the fields enclosed
 * by brackets "[]" replaced with your own identifying information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2008 Sun Microsystems, Inc.
 */

package org.opends.server.authorization.dseecompat;

/**
 * This class provides an enumeration of the two access
 * types (allow, deny).
 */
public enum EnumAccessType {

    /**
     * Allow access type.
     */
    ALLOW   ("allow"),
    /**
     *  Deny access type.
     */
    DENY    ("deny");

    /*
     * The access type string.
     */
    private final String accessType;

    /**
     * Constructor that sets the accessType string.
     * @param accessType The access type string to set.
     */
    EnumAccessType (String accessType){
        this.accessType = accessType ;
    }

    /**
     * Checks if the access type is equal to the string
     * representation passed in.
     * @param type The string representation of the access type.
     * @return True if the access types are equal.
     */
    public boolean isAccessType(String type){
        return type.equalsIgnoreCase(accessType);
    }

    /*
     * TODO Make this method and all other Enum decode methods more efficient.
     *
     * Using the Enum.values() method is documented to be potentially slow.
     * If we ever expect to use the decode() method in a performance-critical
     * manner, then we should make it more efficient.  The same thing applies
     * to all of the other enumeration types defined in the package.
     */
    /**
     * Decodes an access type enumeration from a string passed into the method.
     * @param type The string representation of the access type.
     * @return   Return an EnumAccessType matching the string representation,
     * or null if the string is not valid.
     */
    public static EnumAccessType decode(String type){
        if (type != null){
            for (EnumAccessType t : EnumAccessType.values()) {
                if (t.isAccessType(type)){
                    return t;
                }
            }
        }
        return null;
    }
}