datatodom.java

这是一个用java和xml编写的流媒体服务器管理软件

/*
 * ====================================================================
 * The Vovida Software License, Version 1.0
 *
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 *
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 * and "Vovida Open Communication Application Library (VOCAL)" must
 * not be used to endorse or promote products derived from this
 * software without prior written permission. For written
 * permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 * may "VOCAL" appear in their name, without prior written
 * permission of Vovida Networks, Inc.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * ====================================================================
 *
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

package vocal.data;

import org.w3c.dom.Element;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;

import java.util.Vector;
import java.util.StringTokenizer;

/**
 * This class takes care of saving existing GUI data to the DOM tree
 * and to file. It also takes data from the DOM tree and gives
 * it to the GUI. By "existing" I mean that the data in this node
 * has beeen written once and is now being changed.
 *
 * This class and its sublclass(es) implement the set of interfaces
 * used by the GUI to read and write data.
 */
public class DataToDOM extends DataGetSet implements DialPlanData, GlobalData
{

  protected ConfigTree configTree;
  protected AccreditConfigTree accreditconfigTree;
  // set to true when a server name has changed.
  protected boolean serverNameChanged = false;

  /**
   *
   * @param tree
   */
  public DataToDOM(ConfigTree tree)
  {
    super();

    configTree = tree;
  }

  public DataToDOM(AccreditConfigTree tree)
  {
    super();

    accreditconfigTree = tree;
  }
  // methods from HostPortData  
 
  /**
   *
   */
  public String getHostData()
  {
    Element element = configTree.getCurrentElement();

    return element.getAttribute("host");
  }

  /**
   *
   * @param data
   */
  public void setHostData(String data)
    throws InvalidRequestException
  {
    Element element = configTree.getCurrentElement();

    element.setAttribute("host", data);

    int type = configTree.getSelectedNodeType();

    {

      element.setAttribute("fileName",
              data + ":" + element.getAttribute("port"));
      System.out.println("in setHostData, set fileName of "
                         + element.getNodeName() + " to "
                         + element.getAttribute("fileName"));
    }

    serverNameChanged = true;
  }

  /**
   *
   */
  public String getPortData()
  {
    Element element = configTree.getCurrentElement();

    return element.getAttribute("port");
  }

  /**
   *
   * @param data
   */
  public void setPortData(String data)
    throws InvalidRequestException
  {
    /*
    Element duplicate = configTree.hostPortExists(getHostData(), data);
    if (duplicate != null)
    {
      throw new InvalidRequestException(getHostData() + ":" + data
      + " already exists in " + duplicate);
    }
    */

    Element element = configTree.getCurrentElement();

    element.setAttribute("port", data);

    int type = configTree.getSelectedNodeType();

    {

      // need to delete existing file
      element.setAttribute("fileName",
              element.getAttribute("host") + ":" + data);
      System.out.println("in setPortData, set fileName of "
                         + element.getNodeName() + " to "
                         + element.getAttribute("fileName"));
    }

    serverNameChanged = true;
  }
  
  
  // methods from SaveDeleteData

  /**
   * If this is a group with things in it,
   * then we cannot save a new name for it.
   */
  public void saveData()
  {
    int nodeType = configTree.getSelectedNodeType();
    Element element = configTree.getCurrentElement();

    switch (nodeType)
    {

      case FEATURE_GROUP:

      case MARSHAL_GROUP:

      case CDR_GROUP:

      case PDP_GROUP:
    	  
      case DVR_GROUP:
    	  
      case ENV_GROUP:
      {
    	  configTree.saveChildrenOfSelectedNode();
    	  break;
      }
    	  
      case REDIRECT_GROUP:

      case HEARTBEAT_GROUP:
      {
        if (element.hasChildNodes())
        {
          System.out.println("cannot change group with members");

          return;
        }

        configTree.saveSelectedNode();

        break;
      }

      case FEATURE_SERVER:

      case MARSHAL_SERVER:

      case REDIRECT_SERVER:

      case CDR_SERVER:

      case PDP_SERVER:	 

      case DVR:
    	  
      case ENV:
    	  
      case HEARTBEAT_SERVER:
      {
        configTree.saveSelectedNode();

        break;
      }

      case DIGITAL_DIAL_PLAN:

      case IP_DIAL_PLAN:
      {
        break;
      }

      case OSP_SERVER:

      case GLOBAL:
      {
        configTree.saveChildrenOfSelectedNode();

        break;
      }
      
      default:
      {
        break;
      }
    }

    // write to file
    try
    {
      if (serverNameChanged)
      {
        DOMToFile.writeAllFilesInPath(configTree.getCurrentElement());

        serverNameChanged = false;
      }
      else
      {

        DOMToFile.tryToWriteFile(configTree.getCurrentElement());
      }
    }
    catch (FailedToWriteFileException e)
    {

      // there is nothing we can do in this case.
    }

  }

  /**
   * We can only do this if the node has no children.
   * @return true if the node could be deleted, false otherwise.
   */
  public boolean deleteData()
  {
    Element element = configTree.getCurrentElement();
    int elementType = configTree.getSelectedNodeType();

    if ((elementType == FEATURE_GROUP) || (elementType == MARSHAL_GROUP) )
    {
      if (!element.hasChildNodes())
      {
        configTree.deleteSelectedNode();

        return true;
      }
    }

    return false;
  }


/*  
  public String getCameraData()
  {
	Element element = configTree.getCurrentElement();
	getValue("Preview");
	getValue("Alarm");
	getValue("Record");
	getValue("Control");
	getValue("Port");
	getValue("Address");

    return element.getAttribute("value");
  }
  
  public void setCameraData(String value)
  {
    Element element = configTree.getCurrentElement();

    if (element.hasChildNodes())
    {
      System.out.println("error: name change requested on group with members");

      return;
    }

    element.setAttribute("value", value);
  }
 */ 
  // methods from GroupData