content: /*
   * Copyright (C) 2013 4th Line GmbH, Switzerland
   *
   * The contents of this file are subject to the terms of either the GNU
   * Lesser General Public License Version 2 or later ("LGPL") or the
   * Common Development and Distribution License Version 1 or later
   * ("CDDL") (collectively, the "License"). You may not use this file
   * except in compliance with the License. See LICENSE.txt for more
   * information.
   *
   * 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.
   */
  
  package org.fourthline.cling.model.meta;
  
  import org.fourthline.cling.model.ValidationError;
  
  import java.util.List;
  import java.util.Collections;
  
  
  /**
   * Describes a single action, the deprecated "query any state variable" action.
   *
   * Note: This is already deprecated in UDA 1.0!
   *
   * @author Christian Bauer
   */
  public class QueryStateVariableAction<S extends Service> extends Action<S> {
  
      public static final String INPUT_ARG_VAR_NAME = "varName";
      public static final String OUTPUT_ARG_RETURN = "return";
  
      public static final String ACTION_NAME = "QueryStateVariable";
      public static final String VIRTUAL_STATEVARIABLE_INPUT = "VirtualQueryActionInput";
      public static final String VIRTUAL_STATEVARIABLE_OUTPUT = "VirtualQueryActionOutput";
  
      public QueryStateVariableAction() {
          this(null);
      }
  
      public QueryStateVariableAction(S service) {
          super(ACTION_NAME,
                  new ActionArgument[]{
                          new ActionArgument(INPUT_ARG_VAR_NAME, VIRTUAL_STATEVARIABLE_INPUT, ActionArgument.Direction.IN),
                          new ActionArgument(OUTPUT_ARG_RETURN, VIRTUAL_STATEVARIABLE_OUTPUT, ActionArgument.Direction.OUT),
                  }
          );
          setService(service);
      }
  
      @Override
      public String getName() {
          return ACTION_NAME;
      }
  
      @Override
      public List<ValidationError> validate() {
          return Collections.EMPTY_LIST;
      }
  }