/**
    * Copyright By Grandsoft Company Limited.  
    * 2012-4-10 下午02:30:02
    */
   package gboat2.approveflow.service;
   
   
   import java.util.LinkedList;
   import java.util.List;
  
  import org.osgi.framework.BundleContext;
  import org.osgi.framework.ServiceReference;
  import org.osgi.util.tracker.ServiceTracker;
  import org.osgi.util.tracker.ServiceTrackerCustomizer;
  
  
  /**
   * 
   * @author lysming
   * @since jdk1.6
   * @date 2012-4-10
   *  
   */
  
  public class ApproveFlowServiceFactory extends ServiceTracker {
  
  	private static List<IApproveFlowService> services = new LinkedList<IApproveFlowService>();
  
  	public ApproveFlowServiceFactory(BundleContext context, String filterName, ServiceTrackerCustomizer customizer) {
  		super(context, filterName, customizer);
  	}
  	
  	@Override
  	public Object addingService(ServiceReference reference){
  		IApproveFlowService approveFlowService = (IApproveFlowService)context.getService(reference);
  		services.add(approveFlowService);
  		return super.addingService(reference);
  	}
  	
  	@Override
  	public void remove(ServiceReference reference){
  		IApproveFlowService approveFlowService = (IApproveFlowService)context.getService(reference);
  		services.remove(approveFlowService);
  	}
  
  	
  	/** 
  	  * {@inheritDoc}}      
  	  * @see gboat2.approveflow.service.IApproveFlowServiceRegister#getApproveFlowServices()   
  	  */
  	public static List<IApproveFlowService> getApproveFlowServices() {
  		return services;
  	}
  	
  }