jahiaearfilehandler.java

java 写的一个新闻发布系统

//
//                                   ____.
//                       __/\ ______|    |__/\.     _______
//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
//                                      /_____|
//
//                 . . . i n   j a h i a   w e   t r u s t . . .
//
//
//
//  JahiaEarFileHandler
//
//  NK      13.01.2001
//
//

package org.jahia.data.webapps;

import java.io.*;
import java.util.*;
import java.util.jar.*;
import java.util.zip.*;
//import com.sun.xml.tree.*;
import org.w3c.dom.*;
//import org.xml.sax.*;
import org.jahia.exceptions.*;
import org.jahia.utils.zip.*;               // JahiaarHandler
import org.jahia.utils.*;                   // JahiaCmdExec
import org.jahia.utils.xml.*;               // XMLParser
import org.jahia.registries.ServicesRegistry;

/**
 * This class is responsible for loading data from a .Ear File
 * The Information are loaded from the META-INF/application.xml file :
 *
 * -----------------------------------------------------------------
 * IMPORTANT !!!!! Must call the method closeArchiveFile()
 * to be able to delete the file later !!!
 * -----------------------------------------------------------------
 *
 * @author Khue ng
 * @version 1.0
 *
 */
public class JahiaEarFileHandler {

   /** The web.xml file **/
   private static final String APPLICATION_XML_FILE = "META-INF/application.xml";
   /** The Full path to the Ear File **/
   private String m_FilePath;
   /** The Archive File **/
   private JahiaArchiveFileHandler m_ArchFile;
   /** The List of Web Compomnents Definition **/
   private Vector m_WebComponents = new Vector();
   /** The Application_Xml to store data extracted from application.xml file **/
   private Application_Xml m_AppXmlDoc ;

   /**
    * Constructor is initialized with the Ear File full path
    *
    */
   public JahiaEarFileHandler (String filePath)
   throws JahiaException {

      m_FilePath = filePath;
      File f = new File(filePath);
      try {

         m_ArchFile = new JahiaArchiveFileHandler( f.getAbsolutePath() );

      } catch (IOException e ) {

         String errMsg = "Failed creating an Archive File Handler "  ;
         JahiaConsole.println("JahiaEarFileHandler::Constructor", errMsg + "\n" + e.toString());
         throw new JahiaException ("JahiaEarFileHandler", errMsg ,
                                    JahiaException.SERVICE_ERROR, JahiaException.ERROR);

      }
		
	  	
      try {
         buildWebComponents();
      }  catch ( JahiaException je ) {

         if ( m_ArchFile != null ){
            m_ArchFile.closeArchiveFile();
         }

         JahiaConsole.println("JahiaEarFileHandler:: Constructor", "error building the WebApssWarPackage" + je.toString());
         throw new JahiaException ("JahiaEarFileHandler", "error building the JahiaWebAppsWar Package" ,
                                    JahiaException.SERVICE_ERROR, JahiaException.ERROR);

      }


   }


   /**
    * Extract data from the application.xml file and build the list
    * of WebComponents Definition
    *
    */
   protected void buildWebComponents() throws JahiaException {

      // extract data from the application.xml file
      try {
         File tmpFile = m_ArchFile.extractFile(APPLICATION_XML_FILE);

		 //System.out.println(" tmpxmlfile is " + tmpFile.getAbsolutePath() );
		 
         m_AppXmlDoc = new Application_Xml(tmpFile.getAbsolutePath());
         m_AppXmlDoc.extractDocumentData();
         m_WebComponents = m_AppXmlDoc.getWebComponents();
         tmpFile.deleteOnExit();
         tmpFile.delete();
      } catch (IOException ioe){

         String errMsg = "Failed extracting application.xml file data "  ;
         JahiaConsole.println("JahiaEarFileHandler:: buildWebComponents", errMsg + "\n" + ioe.toString());
         throw new JahiaException ("JahiaEarFileHandler", errMsg ,
                                    JahiaException.SERVICE_ERROR, JahiaException.ERROR);

      }

   }


   /**
    * Returns the WebComponents list
    *
    * @return (Vector) the list of Web Component Definitions
    */
   public Vector getWebComponents(){

      return m_WebComponents;

   }


   /**
    * Unzip the contents of the jar file in it's current folder
    *
    */
   public void unzip() throws JahiaException {

      // Unzip the file
      m_ArchFile.unzip();

   }


   /**
    * Unzip the contents of the jar file in a gived folder
    *
    * @param (String) path , the path where to extract file
    */
   public void unzip(String path) throws JahiaException {

      // Unzip the file
      m_ArchFile.unzip(path);

   }


   /**
    * Unzip an entry in a gived folder
    *
    * @param (String) entryName , the name of the entry
    * @param (String) path , the path where to extract file
    */
   public void extractEntry( String entryName,
                             String path) throws JahiaException {

      // Unzip the entry
      m_ArchFile.extractEntry(entryName, path);

   }


   /**
    * Close the Jar file
    *
    */
   public void closeArchiveFile(){

      if ( m_ArchFile != null ) {
         m_ArchFile.closeArchiveFile();
      }
   }


} // End Class JahiaEarFileHandler