folder.java

java 写的一个新闻发布系统

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

package org.jahia.services.filemanager;


import java.io.*;
import java.util.*;
import java.sql.*;

import org.jahia.tools.files.*;
import org.jahia.utils.*;           // JahiaConsole
import org.jahia.exceptions.*;      // JahiaInitializationException
import org.jahia.services.*;
import org.jahia.registries.*;
import org.jahia.data.files.*;




import java.io.*;
import java.util.*;

/**
 * Class Folder.
 * A folder item
 *
 * @author Khue ng
 * @version 1.0
 */
public class Folder {

    /** the folder identifier **/
    private int m_FolderID = -1;
    /** the filemanager id **/
    private int m_FilemanagerID = -1;
    /** the parent folder id **/
    private int m_ParentID = -1;
    /** the depth , used for quick search purpose **/
    private int m_Depth = -1;
    /** the folder name **/
    private String m_FolderName = "";

    /** a reference to an instance of FolderDB class **/
    private FolderDB m_FolderDB;



    /**
      * Constructor
      */
    protected Folder()
    {
    }

    /**
     * Constructor
     *
     * @param the filemanager id
     * @param the parent folder id
     * @param the folder name
     */
    public Folder(
                    int filemanagerID,
                    int parentID,
                    String folderName ){

        m_FilemanagerID = filemanagerID;
        m_ParentID = parentID;
        m_FolderName = folderName;
    }

    public int getFolderID(){
        return m_FolderID;
    }

    protected void setFolderID(int id){
        m_FolderID = id;
    }

    public int getFilemanagerID(){
        return m_FilemanagerID;
    }

    protected void setFilemanager(int id){
        m_FilemanagerID = id;
    }


    public int getParentID(){
        return m_ParentID;
    }

    public void setParentID(int id){
        m_ParentID = id;
        this.setDepth( this.getParent().getDepth()+1 );
    }

    public int getDepth(){
        return m_Depth;
    }

    protected void setDepth(int depth){
        m_Depth = depth;
    }

    public String getFolderName(){
        return m_FolderName;
    }

    public void setFolderName(String folderName){
        m_FolderName = folderName;
    }


    /**
     * Method getParent<br>
     * @Return parent folder
     */
    public Folder getParent(){
        return m_FolderDB.getInstance().getFolder(this.getParentID());
    }


    /**
     * Method getParents<br>
     * get all parent of this folder branch
     *
     * @parent an Hastable where to store parents id
     */
    public void getParents(Hashtable parents){

        parents.put( new Integer(this.getFolderID()), new Integer(this.getFolderID()) );
        Folder parent = m_FolderDB.getInstance().getFolder(this.getParentID());
        if ( parent != null ){
            toConsole("getParents():" + parent.getFolderID());
            //parents.put( new Integer(parent.getFolderID()), new Integer(parent.getFolderID()) );
            parent.getParents(parents);
        }
    }

    /**
     * Method getFiles<br>
     * Return files contained in this folder
     */
    public Vector getFiles() {

        Vector files = null;

        // get Files
        String orderSql = " order by title_jahia_file";
        files = ServicesRegistry.getInstance().getJahiaFilemanagerService().getFilesByFolderDB(this.getFolderID(),orderSql);
        return files;
    }


    /**
     * Method deleteFiles<br>
     * Delete files from folder.
     *
     * @param fileIDs String array of file id to delete
     * @return false on error
     */
    public boolean deleteFiles(String[] fileIDs) {

      boolean success = true;

        // get active folder's files
        Vector files = this.getFiles();
        if ( files != null ) {
            JahiaFile aFile = null;
            int nbFile = files.size();

            for ( int i=0; i<nbFile ; i++ ) {

                aFile = (JahiaFile)files.get(i);
                if ( inValues( new String().valueOf(aFile.getFileID()),fileIDs) ){
                    if ( !ServicesRegistry.getInstance().getJahiaFilemanagerService().deleteFileDB(aFile.getFileID()) ){
                        success = false;
                        break;
                    }
                }
            }
        }
        return success;
    }


    /**
     * Method addFolder<br>
     *
     * @param folderName
     * @return false on any error
     */
    public boolean addFolder(String folderName){

        if (folderName.length()>0)	{

            // create new folder
            Folder folder = new Folder (	this.getFilemanagerID(),
                                                        this.getFolderID(),			// parent folder
                                                        folderName
                                                     );

            if (!m_FolderDB.getInstance().insert(folder)){
                toConsole("addFolder, error create new Folder in db");
                return false;
            }
        }
        return true;
    }

    /**
     * Method moveFiles<br>
     * Move some files in this folder to another destination folder
     *
     * @param destFolder the destination folder
     * @param fileIDs a string array of file ids
     * @return false on error
     */
    public boolean moveFiles(Folder destFolder, String[] fileIDs ){

            toConsole(" moveFiles started ");

        boolean success = true;

        if ( fileIDs != null && destFolder != null ){

            // get folder's files
            Vector files = this.getFiles();
                JahiaFile aFile = null;

            if ( files != null ){

                    int nbFile = files.size();

                for ( int i=0; i<nbFile ; i++ ) {

                        aFile = (JahiaFile)files.get(i);
                      if ( inValues( new String().valueOf(aFile.getFileID()),fileIDs) ){
                            aFile.setFolderID(destFolder.getFolderID());
                            if ( !(ServicesRegistry.getInstance().getJahiaFilemanagerService().updateFileDB(aFile)) ) {
                                // error moving files
                           toConsole("moveFiles, error updating files info");
                                success=false;
                                break;
                            }
                       }
                   }
                }
            } else {
               success = false;
           }

          return success;

    }


    /**
     * Method renameFolder<br>
     * Rename the folder name
     *
     * @param folderName the new folder name
     * @return false on any error
     */
    public boolean renameFolder(String folderName){

        toConsole(" renameFolder started ");

        if (folderName.length()>0)	{

            this.setFolderName(folderName);
            if (!m_FolderDB.getInstance().update(this)){
                    return false ;
            }
        }
        return true;
    }


    /**
     * Method inValues<br>
     * Check if a string value is in an array of string
     *
     * @param aValue a string value
     * @param values an array of String
     * @return true if value found in array
     */
     protected boolean inValues(String aValue, String[] values){
        if ( values != null ){
            for (int i=0 ; i<values.length ; i++){
                if (aValue.equals(values[i])){
                    return true;
                }
            }
        }
        return false;
     }


   /**
     * Method toConsole
     * For debugging purpose
     *
     * @param msg any String message to write to the console
     */
    public void toConsole(String msg) {
        JahiaConsole.println("Folder.toConsole", msg);
    }


}