filter.java

来自「CmisJavaApi」· Java 代码 · 共 99 行

/*
 * The contents of this file are subject to the Dyade Public License, 
 * as defined by the file DYADE_PUBLIC_LICENSE.TXT
 *
 * You may not use this file except in compliance with the License. You may
 * obtain a copy of the License on the Dyade web site (www.dyade.fr).
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific terms governing rights and limitations under the License.
 *
 * The Original Code is CmisJava API, including the java package 
 * fr.dyade.cmis, released September 5, 2000.
 *
 * The Initial Developer of the Original Code is Dyade. The Original Code and
 * portions created by Dyade are Copyright Bull and Copyright INRIA. 
 * All Rights Reserved.
 */

/*      Copyright 1996-2000 by Institut National de Recherche en Informatique 
 *                             et en Automatique (INRIA)
 *          All rights reserved.  See COPYRIGHT in top-level directory.
 *
 *      Authors: Laurent Andrey, Eric Dillon, Olivier Festor
 */

//---------------------------------------------------------------------------//
//  CVS Info
//---------------------------------------------------------------------------//
//
//  $Id: Filter.java,v 1.2 2000/09/05 13:30:40 festor Exp $
//  $Source: /local/resedas/CVS-Repository/CmisJavaApi/src/fr/dyade/cmis/api/types/Filter.java,v $

//---------------------------------------------------------------------------//
//  Todo
//---------------------------------------------------------------------------//
//

package fr.dyade.cmis.api.types;


import java.util.Enumeration;
import java.util.Vector;

/** 
  * Java representation for an ASN.1 Filter datatype.
  * <p>
  * The implementation provides 4 static constructors to build a CMIS Filter:
  * <menu>
  *    <li> <a href="#FILTER_ITEM">FILTER_ITEM</a>, to build the basic component of a <code>Filter</code>
  *    <li> <a href="#FILTER_AND">FILTER_AND</a>, to build a "AND" Filter out of a Java <code>Vector</code> of Filters,
  *    <li> <a href="#FILTER_AND">FILTER_OR</a>, to build a "OR" Filter out of a Java <code>Vector</code> of Filters,
  *    <li> <a href="#FILTER_AND">FILTER_NOT</a>, to build a "NOT" Filter out of a <code>Filter</code>.
  * </menu>
  *
  * As a consequence, to build a <code>Filter</code> the user may use the following kind of code:<br>
  *<code>Filter myFilter = Filter.FILTER_NOT(otherFilter);</code><br>
  *
  * @see fr.dyade.cmis.api.types.FilterItem
  * TODO: Is derived classes business is a good idea ? Would we keep some static object factory methods ?
  * as in FilterItem ? For now we provide the  both !!
  * @version cvs $Id: Filter.java,v 1.2 2000/09/05 13:30:40 festor Exp $
  */
abstract public class Filter extends CMISType {
      // the different values of the discriminant. Remark: those are NOT X711 asn1 choice cases (see X711 pg 21)
      public static final short FILTER_ITEM_CODE = 1; // 8  (X711)
      public static final short FILTER_AND_CODE  = 2; // 9  (X711)
      public static final short FILTER_OR_CODE   = 3; // 10 (X711)
      public static final short FILTER_NOT_CODE  = 4; // 11 (X711)
      
      protected Filter() {
	 super();
      }
      /** Get tag for actual class.
	* @return one of the Filter.FILTER_XXXX_CODE accordingly to
	* the actual class of this object.
	*/
      public abstract short getCode();
      public final static Filter FILTER_ITEM( FilterItem pFilterItem ) {
	 return new Filter_ITEM(pFilterItem);
      }
      public final static Filter FILTER_AND( Filter p1, Filter p2 ) {
	 return new Filter_AND(p1, p2);
      }
      public final static Filter FILTER_AND( Filter p1, Filter p2, Filter p3 ) {
	 return new Filter_AND(p1, p2, p3);
      }
      public final static Filter FILTER_OR( Filter p1, Filter p2 ) {
	 return new Filter_OR(p1, p2);
      }
      public final static Filter FILTER_OR( Filter p1, Filter p2, Filter p3 ) {
	 return new Filter_OR(p1, p2, p3);
      }
      public final static Filter FILTER_NOT( Filter pNotFilter ) {
	 return new Filter_NOT(pNotFilter);
      }
}