content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt;
  
  import java.util.Set;
  
  import com.google.gwt.user.server.rpc.SerializationPolicy;
  import com.google.gwt.user.server.rpc.impl.LegacySerializationPolicy;
  
  /**
   * A GWT serialization policy for pre-fetching.<p>
   *
   * @since 8.0.0
   */
  public final class CmsPrefetchSerializationPolicy extends SerializationPolicy {
  
      /** The singleton instance of this serialization policy. */
      private static CmsPrefetchSerializationPolicy m_instance;
  
      /** An instance of the legacy serialization policy. */
      private LegacySerializationPolicy m_legacyPolicy = LegacySerializationPolicy.getInstance();
  
      /**
       * Hidden default constructor.<p>
       */
      private CmsPrefetchSerializationPolicy() {
  
          // do nothing
      }
  
      /**
       * Returns the singleton instance of this class.<p>
       *
       * @return the singleton instance of this class
       */
      public static CmsPrefetchSerializationPolicy instance() {
  
          if (m_instance == null) {
              m_instance = new CmsPrefetchSerializationPolicy();
          }
          return m_instance;
      }
  
      /**
       * @see com.google.gwt.user.server.rpc.SerializationPolicy#getClientFieldNamesForEnhancedClass(java.lang.Class)
       */
      @Override
      public Set<String> getClientFieldNamesForEnhancedClass(Class<?> clazz) {
  
          return null;
      }
  
      /**
       * @see com.google.gwt.user.server.rpc.SerializationPolicy#shouldDeserializeFields(java.lang.Class)
       */
      @Override
      public boolean shouldDeserializeFields(Class<?> clazz) {
  
          return m_legacyPolicy.shouldDeserializeFields(clazz);
      }
  
      /**
       * @see com.google.gwt.user.server.rpc.SerializationPolicy#shouldSerializeFields(java.lang.Class)
       */
      @Override
      public boolean shouldSerializeFields(Class<?> clazz) {
  
          return m_legacyPolicy.shouldDeserializeFields(clazz);
      }
  
      /**
       * @see com.google.gwt.user.server.rpc.SerializationPolicy#validateDeserialize(java.lang.Class)
       */
      @Override
      public void validateDeserialize(Class<?> clazz) {
  
          // all are valid
      }
  
      /**
       * @see com.google.gwt.user.server.rpc.SerializationPolicy#validateSerialize(java.lang.Class)
       */
      @Override
      public void validateSerialize(Class<?> clazz) {
  
          // all are valid
      }
  }
  