jahiacontainerslogic.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 . . .
//

/***
    * JahiaContainersLogic
    * @author Eric Vassalli
    *
    * Holds all the methods to build a container logical tree structure
    *
    */

//
//  logic_build_container_tree( int pageID, ParamBean jParams )
//


package org.jahia.services.containers;

import java.sql.*;                      // ResultSet
import java.util.*;                     // Vector

import org.jahia.params.*;          // ParamBean
import org.jahia.data.*;            // JahiaData
import org.jahia.utils.*;           // JahiaConsole
import org.jahia.data.fields.*;     // JahiaField
import org.jahia.data.containers.*; // JahiaContainers
import org.jahia.registries.*;      // ServiceRegistry
import org.jahia.exceptions.JahiaException;


public class JahiaContainersLogic
{


    /***
        * constructor
        *
        */
    public JahiaContainersLogic()
    {
    } // end constructor






    /***
        * sorts the container tree
        *
        * @param        theTree             the actual tree, unsorted
        * @return       a Vector of filled container lists
        * @see          org.jahia.data.containers.JahiaContainerList
        *
        */
    public void logic_sort_container_tree( Vector theTree )
    throws JahiaException
    {
        // build dependencies between container lists
        for (int i=0; i < theTree.size(); i++) {
            JahiaContainerList theList = (JahiaContainerList) theTree.elementAt(i);
            if (theList.getParentEntryID() != 0) {
                if (logic_add_container_list_to_container( theList, theList.getParentEntryID(), theTree )) {
                    theTree.removeElementAt(i);
                    i--;
                }
            }
        }
    } // end logic_build_container_tree



    /***
        * adds a container list to a container in the tree
        *
        * @param        theContainerList    the container list to add
        * @param        thectnid      the container id to add the container list to
        * @param        theTree             the Tree Vector
        * @return       true if succeeded, false if failed
        *
        */
    private boolean logic_add_container_list_to_container(  JahiaContainerList  theContainerList,
                                                            int                 thectnid,
                                                            Vector              theTree )
    throws JahiaException
    {
        JahiaContainer theContainer = logic_find_container_in_list( thectnid, theTree.elements() );
        if (theContainer != null) {
            if (theContainerList == null) {
                JahiaConsole.println("JahiaContainersLogic.logic_add_container_list_to_container",
                                     "Hey, the container list is null !!" );
            }
            theContainer.addContainerList( theContainerList );
            return true;
        } else {
            String errorMsg = "Error in container structure : container " + thectnid + " is referrenced";
            errorMsg += " by list " + theContainerList.getID() + ", but does not exist.";
            JahiaException je = new JahiaException( errorMsg, errorMsg,
                                JahiaException.DATABASE_ERROR, JahiaException.WARNING );
            return false;
        }
    } // end logic_add_container_list_to_container



    /***
        * finds a container object by its id in the tree structure
        *
        * @param        thectnid      the container id
        *
        */
    private JahiaContainer logic_find_container_in_list(    int             thectnid,
                                                            Enumeration     containerLists )
    {
        while (containerLists.hasMoreElements()) {
            JahiaContainerList theContainerList = (JahiaContainerList) containerLists.nextElement();
            Enumeration containers = theContainerList.getContainers();
            while (containers.hasMoreElements()) {
                JahiaContainer theContainer = (JahiaContainer) containers.nextElement();
                if (theContainer.getID() != thectnid) {
                    Enumeration listInContainer = theContainer.getContainerLists();
                    while (listInContainer.hasMoreElements()) {
                        JahiaContainer tmpContainer = logic_find_container_in_list( thectnid,
                                                                    listInContainer );
                        if (tmpContainer != null) {
                            return tmpContainer;
                        }
                    }
                } else {
                    return theContainer;
                }
            }
        }
        return null;
    } // end logic_find_container_in_list



} // end JahiaContainersLogic