/*
    * 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.slc.core.execution;
  
  import java.util.List;
  
  /** A spec attribute whose value is a reference to a full fledged object. */
  public class RefSpecAttribute extends AbstractSpecAttribute implements
  		Cloneable {
  	private static final long serialVersionUID = -3427797452955753574L;
  	private transient Class<?> targetClass = String.class;
  	/** Read only. */
  	private String targetClassName;
  	private transient Object value = null;
  
  	/** List to be chosen from */
  	private List<RefValueChoice> choices = null;
  
  	public Object getValue() {
  		return value;
  	}
  
  	public void setValue(Object value) {
  		this.value = value;
  	}
  
  	/** Default is {@link String} */
  	public Class<?> getTargetClass() {
  		return targetClass;
  	}
  
  	public void setTargetClass(Class<?> targetClass) {
  		this.targetClass = targetClass;
  		this.targetClassName = targetClass.getName();
  	}
  
  	public String getTargetClassName() {
  		return targetClassName;
  	}
  
  	/** @return can be null */
  	public List<RefValueChoice> getChoices() {
  		return choices;
  	}
  
  	public void setChoices(List<RefValueChoice> choices) {
  		this.choices = choices;
  	}
  
  	@Override
  	protected Object clone() throws CloneNotSupportedException {
  		RefSpecAttribute rsa = new RefSpecAttribute();
  		rsa.setTargetClass(targetClass);
  		rsa.setChoices(choices);
  		return rsa;
  	}
  
  	@Override
  	public String toString() {
  		return "Ref spec attribute [" + targetClass + "]"
  				+ (value != null ? "=" + value : "");
  	}
  
  }