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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * 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.
 * ====================================================================
 */

package org.jclouds.vcloud.xml;

import static org.jclouds.vcloud.util.Utils.cleanseAttributes;

import java.util.Map;

import org.jclouds.http.functions.ParseSax;
import org.jclouds.vcloud.domain.NetworkConnection;
import org.jclouds.vcloud.domain.network.IpAddressAllocationMode;
import org.xml.sax.Attributes;

/**
 * @author Adrian Cole
 */
public class NetworkConnectionHandler extends ParseSax.HandlerWithResult {
   protected StringBuilder currentText = new StringBuilder();

   protected String network;
   protected int networkConnectionIndex;
   protected String ipAddress;
   protected String externalIpAddress;
   protected boolean connected;
   protected String MACAddress;
   protected IpAddressAllocationMode ipAddressAllocationMode;

   public NetworkConnection getResult() {
      NetworkConnection connection = new NetworkConnection(network, networkConnectionIndex, ipAddress,
               externalIpAddress, connected, MACAddress, ipAddressAllocationMode);
      this.network = null;
      this.networkConnectionIndex = -1;
      this.ipAddress = null;
      this.externalIpAddress = null;
      this.connected = false;
      this.MACAddress = null;
      this.ipAddressAllocationMode = null;
      return connection;
   }

   public void startElement(String uri, String localName, String qName, Attributes attrs) {
      Map attributes = cleanseAttributes(attrs);
      if (qName.endsWith("NetworkConnection")) {
         network = attributes.get("network");
      }
   }

   @Override
   public void endElement(String uri, String localName, String qName) {
      if (qName.endsWith("NetworkConnectionIndex")) {
         this.networkConnectionIndex = Integer.parseInt(currentOrNull());
      } else if (qName.endsWith("IpAddress")) {
         this.ipAddress = currentOrNull();
      } else if (qName.endsWith("ExternalIpAddress")) {
         this.externalIpAddress = currentOrNull();
      } else if (qName.endsWith("IsConnected")) {
         this.connected = Boolean.parseBoolean(currentOrNull());
      } else if (qName.endsWith("MACAddress")) {
         this.MACAddress = currentOrNull();
      } else if (qName.endsWith("IpAddressAllocationMode")) {
         this.ipAddressAllocationMode = IpAddressAllocationMode.valueOf(currentOrNull());
      }
      currentText = new StringBuilder();
   }

   public void characters(char ch[], int start, int length) {
      currentText.append(ch, start, length);
   }

   protected String currentOrNull() {
      String returnVal = currentText.toString().trim();
      return returnVal.equals("") ? null : returnVal;
   }
}