datatodom.java

SIP（Session Initiation Protocol）是由IETF定义

/*
 * ====================================================================
 * 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
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 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * 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;

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

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

    configTree = 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 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 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;
  }


  // methods from GroupData

  public String getGroupName()
  {
    Element element = configTree.getCurrentElement();

    return element.getAttribute("value");
  }

  public void setGroupName(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 GlobalData

  public String getExpiryTimerData() throws InvalidRequestException
  {
    return getValue("expiryTimer");
  }

  public void setExpiryTimerData(String data) throws InvalidRequestException
  {
    Element rootElement = configTree.getRootElement();

    setValue("expiryTimer", data);
  }

  public String getMulticastHostData() throws InvalidRequestException
  {
    Element rootElement = configTree.getRootElement();

    return getChildAttribute(rootElement, "multicastHost", "host");
  }

  public void setMulticastHostData(String data) throws InvalidRequestException
  {
    Element rootElement = configTree.getRootElement();

    setChildAttribute(rootElement, "multicastHost", "host", data);
  }

  public String getMulticastPortData() throws InvalidRequestException
  {
    Element rootElement = configTree.getRootElement();

    return getChildAttribute(rootElement, "multicastHost", "port");
  }

  public void setMulticastPortData(String data) throws InvalidRequestException
  {
    Element rootElement = configTree.getRootElement();

    setChildAttribute(rootElement, "multicastHost", "port", data);
  }

  public String getMissedHeartbeatsData() throws InvalidRequestException
  {
    return getValue("maxMissedHeartbeats");
  }

  public void setMissedHeartbeatsData(String data)
    throws InvalidRequestException
  {
    setValue("maxMissedHeartbeats", data);
  }

  public String getHeartbeatIntervalData() throws InvalidRequestException
  {
    return getValue("heartbeatInterval");
  }

  public void setHeartbeatIntervalData(String data)
    throws InvalidRequestException
  {
    setValue("heartbeatInterval", data);
  }

  public String getProxyAuthKeyData() throws InvalidRequestException
  {
    return getValue("proxyAuthKey");
  }

  public void setProxyAuthKeyData(String data) throws InvalidRequestException
  {
    Element proxyAuthKey = getElement("proxyAuthKey");

    if (proxyAuthKey == null)
    {
      Element currentElement = configTree.getCurrentElement();
      Document doc = currentElement.getOwnerDocument();

      proxyAuthKey = doc.createElement("proxyAuthKey");

      currentElement.appendChild(proxyAuthKey);
    }

    proxyAuthKey.setAttribute("value", data);
  }

  public boolean getRedirectReasonData() throws InvalidRequestException
  {
    String data = getValue("redirectReasonInSIP");

    if (data.equals("true"))
    {
      return true;
    }

    return false;
  }

  public void setRedirectReasonData(boolean data)
    throws InvalidRequestException
  {
    Element redirectReason = getElement("redirectReasonInSIP");

    if (redirectReason == null)
    {
      Element currentElement = configTree.getCurrentElement();
      Document doc = currentElement.getOwnerDocument();

      redirectReason = doc.createElement("redirectReasonInSIP");

      currentElement.appendChild(redirectReason);
    }

    if (data)
    {
      redirectReason.setAttribute("value", "true");
    }
    else
    {
      redirectReason.setAttribute("value", "false");
    }
  }

  public String getLowestUIDData() throws InvalidRequestException
  {
    return getValue("startRange");
  }

  public void setLowestUIDData(String data) throws InvalidRequestException
  {
    Element startRange = getElement("startRange");

    if (startRange == null)
    {
      Element currentElement = configTree.getCurrentElement();
      Document doc = currentElement.getOwnerDocument();

      startRange = doc.createElement("startRange");

      currentElement.appendChild(startRange);
    }

    startRange.setAttribute("value", data);
  }

  public String getHighestUIDData() throws InvalidRequestException
  {
    return getValue("endRange");
  }

  public void setHighestUIDData(String data) throws InvalidRequestException
  {
    Element endRange = getElement("endRange");

    if (endRange == null)
    {
      Element currentElement = configTree.getCurrentElement();
      Document doc = currentElement.getOwnerDocument();

      endRange = doc.createElement("endRange");

      currentElement.appendChild(endRange);
    }

    endRange.setAttribute("value", data);
  }

  /**
   * The Dial Plan table model now stores its data in a DOM.
   */
  public Element getDialPlanData()
  {
      Element data = configTree.getCurrentElement();

      return data;
  }

  public void setDialPlanData(Element data)
  {

    // need a reference to the DOM to create elements.
    Document theDOM = configTree.getTreeDOM();
    Element currentElement = configTree.getCurrentElement();

    if (currentElement == null)
    {
      System.out.println("current element is null");

      return;
    }

    configTree.replaceSelectedNode((Node)data);

//     System.out.println("value of data is "
//                        + data.getAttribute("value"));
//     System.out.println("value of current element is "
//                        + currentElement.getAttribute("value"));

//     Node parentNode = currentElement.getParentNode();

//     if (parentNode == null)
//     {
// 	System.out.println("parent of current element is null");

// 	return;
//     }

//     parentNode.replaceChild(data, currentElement);

//     // the JTree is rebuilt in the Save step.
  }



  // protected methods

  protected void checkValidity(String methodName)
    throws InvalidRequestException
  {

    // does nothing in DataToDOM
  }

  protected Element getElement(String tagName)
  {
    Element element = configTree.getCurrentElement();

    if (element.getNodeName().equals(tagName))
    {
      return element;
    }

    NodeList nodeList = element.getElementsByTagName(tagName);

    if (nodeList.getLength() == 0)
    {
      System.out.println("Element " + element.getTagName()
                         + " has no child named " + tagName);

      return null;
    }

    Element child = (Element) (nodeList.item(0));

    return child;
  }

  protected String getValue(String tagName)
  {
    Element element = getElement(tagName);

    if (element == null)
    {
      return "";
    }

    return element.getAttribute("value");
  }

  protected void setValue(String tagName, String value)
  {
    Element element = getElement(tagName);

    if (element == null)
    {
      return;
    }

    element.setAttribute("value", value);
  }

  protected String getChildAttribute(Element element, String childName,
          String attributeName)
  {
    NodeList nodeList = element.getElementsByTagName(childName);

    if (nodeList.getLength() < 1)
    {
      return "";
    }

    Element child = (Element) (nodeList.item(0));

    return child.getAttribute(attributeName);
  }

  protected void setChildAttribute(Element element, String childName,
          String attributeName, String attributeValue)
  {
    NodeList nodeList = element.getElementsByTagName(childName);
    Element child = (Element) (nodeList.item(0));

    child.setAttribute(attributeName, attributeValue);
  }

  /**
   * This method is only intended to be used from the DataFragment side.
   */
  public DocumentFragment getFragment() throws InvalidRequestException
  {
    throw new InvalidRequestException("getFragment called on existing Node in the DOM");
  }

}