IOperationProvider.java

/* See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * Esri Inc. licenses this file to You 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 com.esri.gpt.server.csw.provider.components;
import javax.servlet.http.HttpServletRequest;
import javax.xml.xpath.XPath;
import org.w3c.dom.Node;

/**
 * Interface for an operation provider.
 */
public interface IOperationProvider {
  
  /** methods ================================================================= */
  
  /**
   * Handles a URL based request (HTTP GET).
   * @param context the operation context
   * @param request the HTTP request
   * @throws Exception if a processing exception occurs
   */
  public void handleGet(OperationContext context, HttpServletRequest request) 
    throws Exception;  
  
  /**
   * Handles an XML based request (normally HTTP POST).
   * @param context the operation context
   * @param root the root node
   * @param xpath an XPath to enable queries (properly configured with name spaces)
   * @throws Exception if a processing exception occurs
   */
  public void handleXML(OperationContext context, Node root, XPath xpath)
    throws Exception;

}