servicesregistry.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 . . .
//
//
//  ServicesRegistry
//  EV      19.12.2000
//  SB      23.07.2001

package org.jahia.registries;


import java.util.*;                          	// HashTable, Vector
import org.jahia.utils.*;                	// JahiaConsole
import org.jahia.services.*;             	// Jahia Services
import org.jahia.services.sites.*;			// Jahia Sites Services
import org.jahia.services.files.*;       	// Jahia Files Services
import org.jahia.services.pages.*;        	// Jahia Pages Services
import org.jahia.services.database.*;    	// Jahia Database Services


import org.jahia.services.fields.*;      	// Jahia Fields Services
import org.jahia.services.applications.*;	// Jahia Applications Services
import org.jahia.services.filemanager.*; 	// Jahia Filemanager Services
import org.jahia.services.audit.*;       	// Jahia Audit Log Services

import org.jahia.services.search.*;      	// JahiaSearch

import org.jahia.settings.*;             	// JahiaPrivateSettings
import org.jahia.exceptions.*;           	// JahiaExceptions

import org.jahia.services.fetchers.*;    	// Jahia Fetcher Services
import org.jahia.services.events.*;      	// Jahia Events Services

import org.jahia.services.usermanager.JahiaUserManagerService;
import org.jahia.services.usermanager.JahiaGroupManagerService;
import org.jahia.services.usermanager.JahiaSiteUserManagerService;
import org.jahia.services.usermanager.JahiaSiteGroupManagerService;
import org.jahia.services.acl.JahiaACLManagerService;

import org.jahia.services.containers.*;     // Jahia Containers Services

import org.jahia.services.templates_deployer.*;                        // JahiaTemplatesDeployerService
import org.jahia.services.webapps_deployer.*;                          // JahiaWebAppsDeployerService
import org.jahia.services.deamons.filewatcher.*;                       // JahiaFileWatcherService
import org.jahia.services.shares.AppsShareService;

import org.jahia.services.htmlcache.CacheServerService;

import org.jahia.services.homepages.JahiaHomepagesService;

import org.jahia.exceptions.services.ServiceNotFoundException;

/**
 * The ServicesRegistry class that give a unique access point to Jahia Services.
 * Services are instanciated and put in an Hashtable.<br>
 * Services are loaded from properties file.<br>
 *
 *
 * @author EV
 * @author NK
 */
public class ServicesRegistry
{
    /** It's a Singleton **/
    private static ServicesRegistry theObject = null;

    /** The single point access to services refered by their names *
     * @associates JahiaService*/
    private static Hashtable theRegistry;

    /** Setting used to initialize services **/
    private JahiaPrivateSettings jSettings;


    /** Jahia DBPooling Service Name **/
    private final String JAHIA_DB_POOL_SERVICE                        	= "JahiaDBPoolService";

    // Jahia Files Services
    private final String FILE_TRANSFER_SERVICE                        	= "JahiaFileTransferService";
    private final String TEXT_FILE_SERVICE                            	= "JahiaTextFileService";

    /** Jahia Page Services Name **/
    private final String JAHIA_PAGE_SERVICE                           	= "JahiaPageService";

    /** Jahia Tree View Service Name **/
    private final String JAHIA_TREE_VIEW_SERVICE                        = "JahiaTreeViewService";

    /** Jahia Page Template Service name */
    private final String JAHIA_PAGE_TEMPLATE_SERVICE                  	= "JahiaPageTemplateService";

    /** Jahia Fields Service Name **/
    private final String JAHIA_FIELD_SERVICE                          	= "JahiaFieldService";

    /** Jahia Application Dispatching Service Name **/
    private final String JAHIA_APPLICATIONS_DISPATCHING_SERVICE       	= "JahiaApplicationsDispatchingService";

    /** Jahia Application Persistance Storage Service **/
    private final String JAHIA_APPLICATIONS_PERSISTANCE_SERVICE       	= "JahiaApplicationsPersistanceService";

    private final String JAHIA_INCREMENTORS_DB_SERVICE                	= "JahiaIncrementorsDBService";

    // Jahia Containers Services
    private final String JAHIA_CONTAINERS_SERVICE                     	= "JahiaContainersService";

    // Jahia User Manager Service
    private final String JAHIA_USER_MANAGER_SERVICE                   	= "JahiaUserManagerService";
    private final String JAHIA_GROUP_MANAGER_SERVICE                  	= "JahiaGroupManagerService";
    private final String JAHIA_SITE_USER_MANAGER_SERVICE                = "JahiaSiteUserManagerService";
    private final String JAHIA_SITE_GROUP_MANAGER_SERVICE               = "JahiaSiteGroupManagerService";

    // Jahia ACL Manager Service
    private final String JAHIA_ACL_MANAGER_SERVICE                    	= "JahiaACLManagerService";

    // Jahia SearchService
    private final String JAHIA_SEARCH_SERVICE                         	= "JahiaSearchService";

    // Jahia File Manager Service
    private final String jahia_filemgr_SERVICE                          = "JahiaFilemanagerService";

    // Jahia Fetcher Service
    private final String JAHIA_FETCHER_SERVICE                        	= "JahiaFetcherService";

    // Jahia Templates Deployer Service
    private final String JAHIA_TEMPLATES_DEPLOYER_SERVICE             	= "JahiaTemplatesDeployerService";

    // Jahia WebApps Deployer Service
    private final String JAHIA_WEBAPPS_DEPLOYER_SERVICE               	= "JahiaWebAppsDeployerService";

    // Jahia FileWatcher Service
    private final String JAHIA_FILE_WATCHER_SERVICE                   	= "JahiaFileWatcherService";

    // Jahia Event Service
    private final String JAHIA_EVENT_SERVICE                          	= "JahiaEventService";

    // Jahia Application Manager Service
    private final String JAHIA_APPLICATIONS_MANAGER_SERVICE           	= "JahiaApplicationsManagerService";

    // Jahia Application Context Manager Service
    private final String JAHIA_APPLICATION_CONTEXT_SERVICE           	= "JahiaApplicationContextService";

    // Jahia Audit Log Manager Service
    private final String JAHIA_AUDIT_LOG_MANAGER_SERVICE              	= "JahiaAuditLogManagerService";

        // Jahia Multi Sites Manager Service
    private final String JAHIA_SITES_SERVICE							= "JahiaSitesService";

        // Jahia Applications Share Service
    private final String JAHIA_APPS_SHARE_SERVICE						= "AppsShareService";

    // Jahia Content Cache Server Service
    private final String JAHIA_CACHE_SERVER_SERVICE                     = "CacheServerService";

    // Jahia Homepages Service
    private final String JAHIA_HOMEPAGES_SERVICE                     	= "JahiaHomepagesService";

    //-------------------------------------------------------------------------
    /***
     * getInstance
     * EV    19.12.2000
     *
     */
    public static synchronized ServicesRegistry getInstance()
    {
        if (theObject == null) {
            theObject = new ServicesRegistry();
        }
        return theObject;
    } // end getInstance


    //-------------------------------------------------------------------------
    /**
     * Method init
     */
    public void init (JahiaPrivateSettings jSettings)
        throws JahiaException
    {
        theRegistry = new Hashtable();
        this.jSettings = jSettings;
        Properties fileProperties = this.jSettings.getPropertiesFile();
        Vector classNames = new Vector();

        ////////////////////////////////////////////////////////////////////////////////////////
        // FIXME -Fulco- :  These class names should be extracted automaticaly from the
        //                  jahia.properties file. Much better -> use an XML file to store Jahia
        //                  properties.
        ////////////////////////////////////////////////////////////////////////////////////////

        classNames.add (JAHIA_DB_POOL_SERVICE);
        classNames.add (JAHIA_INCREMENTORS_DB_SERVICE);
        classNames.add (FILE_TRANSFER_SERVICE);
        classNames.add (TEXT_FILE_SERVICE);

        classNames.add (JAHIA_PAGE_TEMPLATE_SERVICE);
        classNames.add (JAHIA_PAGE_SERVICE);
        classNames.add (JAHIA_TREE_VIEW_SERVICE);

        classNames.add (JAHIA_FIELD_SERVICE);
        classNames.add (JAHIA_APPLICATIONS_DISPATCHING_SERVICE);
        classNames.add (JAHIA_APPLICATIONS_PERSISTANCE_SERVICE);
        classNames.add (JAHIA_APPLICATIONS_MANAGER_SERVICE);
        classNames.add (JAHIA_APPLICATION_CONTEXT_SERVICE);
        classNames.add (JAHIA_CONTAINERS_SERVICE);
        classNames.add (JAHIA_SEARCH_SERVICE);
        classNames.add (jahia_filemgr_SERVICE);
        classNames.add (JAHIA_FETCHER_SERVICE);
        classNames.add (JAHIA_ACL_MANAGER_SERVICE);
        classNames.add (JAHIA_GROUP_MANAGER_SERVICE);
        classNames.add (JAHIA_USER_MANAGER_SERVICE);
        classNames.add (JAHIA_TEMPLATES_DEPLOYER_SERVICE);
        classNames.add (JAHIA_WEBAPPS_DEPLOYER_SERVICE);
        classNames.add (JAHIA_FILE_WATCHER_SERVICE);
        classNames.add (JAHIA_EVENT_SERVICE);
        classNames.add (JAHIA_AUDIT_LOG_MANAGER_SERVICE);
        classNames.add (JAHIA_SITES_SERVICE);
        classNames.add (JAHIA_SITE_GROUP_MANAGER_SERVICE);
        classNames.add (JAHIA_SITE_USER_MANAGER_SERVICE);
        classNames.add (JAHIA_APPS_SHARE_SERVICE);
        classNames.add (JAHIA_CACHE_SERVER_SERVICE);
        classNames.add (JAHIA_HOMEPAGES_SERVICE);
        // ... add new services here

        int i;
        String propClassName, className;
        for (i=0; i < classNames.size(); i++)
        {
            className = (String)classNames.get(i);
            propClassName = fileProperties.getProperty (className);
            if (propClassName != null)
            {
                if ("".equals(propClassName)) {
                    JahiaConsole.println("ServiceRegistry.init", "Server [" + className + "] deactivated.");
                } else {
                    propClassName.trim();

                    loadService (className, propClassName);
                    JahiaConsole.println ("ServicesRegistry.init", "Loaded Service ["+className+"] "+
                            "class ["+propClassName+"]");
                }
            }
            else
            {
                JahiaConsole.println ("ServicesRegistry.init", "Service ["+className+
                        "] could not be found in the property file ->"+
                        " STOP JAHIA !");

                throw new JahiaException ("Services Registry Initialization",
                        "Could not load the service ["+className+"]",
                        JahiaException.SERVICE_ERROR,
                        JahiaException.KISS_YOUR_ASS_GOODBYE);
            }
        }
    } // end init



   /**
    * method getService
    *
    * @author NK 21.12.2000
    */
    public JahiaService getService (String serviceName)
    {
        return (JahiaService)theRegistry.get(serviceName) ;
    } // end getService


   /**
    * method getDBPoolService
    *
    * @author NK 21.12.2000
    */

    public JahiaDBPoolService getDBPoolService()
    {
        return (JahiaDBPoolService)theRegistry.get(JAHIA_DB_POOL_SERVICE) ;
    } // end getDBPoolService


   /**
    * method getJahiaFileTransFerService
    *
    * @author NK 21.12.2000
    */
    public JahiaFileTransferService getJahiaFileTransferService()
    {
        return (JahiaFileTransferService)theRegistry.get(FILE_TRANSFER_SERVICE);
    }

   /**
    * method getJahiaFileTransFerService
    *
    * @author NK 21.12.2000
    */
    public JahiaTextFileService getJahiaTextFileService()
    {
        return (JahiaTextFileService)theRegistry.get(TEXT_FILE_SERVICE) ;
    }

   /**
    * method getJahiaPageService
    *
    * @author NK 21.12.2000
    */
    public JahiaPageService getJahiaPageService()
    {
        return (JahiaPageService)theRegistry.get(JAHIA_PAGE_SERVICE) ;
    }


   /**
    * method getJahiaTreeViewService
    *
    * @author MJ 21.07.2000
    */
    public JahiaTreeViewService getJahiaTreeViewService()
    {
        return (JahiaTreeViewService)theRegistry.get(JAHIA_TREE_VIEW_SERVICE) ;
    }


   /**
    * method getJahiaPageTemplateService
    *
    * @author Fulco Houkes
    */
    public JahiaPageTemplateService getJahiaPageTemplateService()
    {
        return (JahiaPageTemplateService)theRegistry.
                get(JAHIA_PAGE_TEMPLATE_SERVICE);
    }



   /**
    * method getJahiaFieldService
    *
    * @author NK 21.12.2000
    */
    public JahiaFieldService getJahiaFieldService()
    {
        return (JahiaFieldService)theRegistry.get(JAHIA_FIELD_SERVICE) ;