/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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.argeo.jcr;
  
  import java.security.Principal;
  
  /** Canonical implementation of a {@link Principal} */
  class SimplePrincipal implements Principal {
  	private final String name;
  
  	public SimplePrincipal(String name) {
  		if (name == null)
  			throw new IllegalArgumentException("Principal name cannot be null");
  		this.name = name;
  	}
  
  	public String getName() {
  		return name;
  	}
  
  	@Override
  	public int hashCode() {
  		return name.hashCode();
  	}
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj == null)
  			return false;
  		if (obj instanceof Principal)
  			return name.equals((((Principal) obj).getName()));
  		return name.equals(obj.toString());
  	}
  
  	@Override
  	protected Object clone() throws CloneNotSupportedException {
  		return new SimplePrincipal(name);
  	}
  
  	@Override
  	public String toString() {
  		return name;
  	}
  
  }