content: /*
   *  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.
   *
   *  See the NOTICE file distributed with this work for additional
   *  information regarding copyright ownership.
   */
  
  package org.seaborne.delta.server.http;
  
  import java.io.IOException;
  
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  
  import org.seaborne.delta.link.DeltaLink;
  
  /** Base class for operations working on HTTPrequest directly, unlike RPCs */ 
  public abstract class HttpOperationBase extends DeltaServlet {
  
      public HttpOperationBase(DeltaLink engine) {
          super(engine);
      }
      
      @Override
      final
      protected DeltaAction parseRequest(HttpServletRequest request, HttpServletResponse response) throws IOException {
          Args args = parseArgs(request);
          return DeltaAction.create(request, response, getLink(), args.token, getOpName(), null, args);
      }
  
      @Override
      final
      protected void validateAction(DeltaAction action) throws IOException {
          validateAction(action.httpArgs);
      }
  
      protected Args parseArgs(HttpServletRequest request) {
          // Default - parse on query string. 
          return Args.argsParams(request);
      }
      
      protected abstract void validateAction(Args httpArgs);
      
      protected abstract String getOpName();
  }
  