navlinkmanager.java

chatper4JdonCMS.rar

package com.jdon.cms.xml;

import com.jdon.cms.model.MenuModel;
import com.jdon.cms.model.NavlinkModel;

import com.jdon.cms.PageFactory;
import com.jdon.cms.Navlink;
import com.jdon.cms.NavlinkException;
import com.jdon.cms.Menu;
import com.jdon.cms.Page;

import com.jdon.util.Debug;
import com.jdon.util.PropsUtil;
import java.io.*;
import java.util.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Jdon.com Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author banq
 * @version 1.0
 */

public class NavlinkManager {



  public final static String module = NavlinkManager.class.getName();
  private static PropsUtil propsUtil = PropsUtil.getInstance();
  private final static XmlUtil xmlUtil = XmlUtil.getInstance();
  private final static PageFactory pageFactory = PageFactory.getInstance();

  private String navlink_xmlfile = null;

  private String navlink_xmlfile_template = null;

  public NavlinkManager() {
    navlink_xmlfile = XmlUtil.getConfDirStr(Navlink.NAME);
    navlink_xmlfile_template = propsUtil.getConfFile(Navlink.TEMPLATE);
  }

  /**
   *  get the NavlinkModel from xml file;
   * @return NavlinkModel
   */
  public NavlinkModel getNavlinkFromFile() {

    NavlinkModel navlink = null;
    File file = new File(navlink_xmlfile);
    if (!file.exists()) {
      navlink = initNavlink();
    } else {
      try {
        Debug.logVerbose(" .... try to get the exsited file :" +
                         navlink_xmlfile, module);
        navlink = (NavlinkModel) CastorHandler.read(
            "com.jdon.cms.model.NavlinkModel",
            navlink_xmlfile);
      } catch (Exception ex) {
        Debug.logError(navlink_xmlfile + "existes, can't read from it" + ex,
                       module);
      }
    }

    navlink.setNew(false);
    navlink.setModified(false);

    return navlink;

  }

  /**
   * init the navlink
   * @return NavlinkModel
   */
  private NavlinkModel initNavlink() {

    Debug.logVerbose(" .... enter init navlinlk", module);

    NavlinkModel navlink = new NavlinkModel();
    try {
      Debug.logVerbose(" wrtie navlink to xmfile:" + navlink_xmlfile, module);
      CastorHandler.write(navlink, navlink_xmlfile);

    } catch (Exception ex) {
      Debug.logError(" create navlink file error:" + ex, module);
    }

    return navlink;

  }

  /**
   * create new Menu object
   * @param pageEvent
   * @return Menu
   */
  public Menu createMenu(Integer Id) {

    Menu menu = new MenuModel(Id);

    return menu;
  }

  /**
   * find a Menu
   * @param Id
   * @return
   * @throws BodyException
   */
  public MenuModel findByPrimaryKey(Integer Id, Navlink navlink) {

    Debug.logVerbose(" find the menu id = " + Id, module);

    List menus = navlink.getMenus();

    Iterator iter = menus.iterator();
    while (iter.hasNext()) {
      MenuModel menu = (MenuModel) iter.next();
      if (menu.getId().intValue() == Id.intValue()) {
        Debug.logVerbose(" found the menu name is " + menu.getName(), module);
        return menu;
      }
    }
    return null;
  }

  public void deleteMenu(Menu menu, Navlink navlink) {
    List menus = navlink.getMenus();
    menus.remove(menu);
  }

  public Menu updateMenu(Menu menu, Page page) {

    menu.setName(page.getName());
//    menu.setIcon("");
    // it is jsp url
    menu.setLink(xmlUtil.getJspUrlStr(menu.getId().toString()));
    // it is the url of body's data html
    menu.setDataLink(xmlUtil.getDataUrlStr(menu.getId().toString()));

    return menu;

  }

  /**
   * write the Body object to XML File
   * @param body
   * @param bodyFile
   * @throws BodyException
   */
  public void write(NavlinkModel navlink) throws NavlinkException {

    Debug.logVerbose(" --- write navlink to file" + navlink_xmlfile, module);

    try {

      CastorHandler.write(navlink, navlink_xmlfile);

      navlink.setNew(false);
      navlink.setModified(false);

    } catch (Exception e) {
      throw new NavlinkException(" create new page error!" + e);
    }

  }

}