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Jadex bridge is a base package for kernels and platforms, i.e., it is used by both and provides commonly used interfaces and classes for active components and their management.

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package jadex.bridge.service.search;

import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;

import jadex.bridge.IComponentIdentifier;
import jadex.bridge.service.IService;
import jadex.bridge.service.IServiceIdentifier;
import jadex.commons.future.ISubscriptionIntermediateFuture;

/**
 *  Interface for a service registry.
 *  
 *  todo: further cleanup the interface
 */
public interface IServiceRegistry
{
	/**
	 *  Search for a service.
	 */
	public IServiceIdentifier searchService(ServiceQuery query);
	
	/**
	 *  Search for services.
	 */
	public Set searchServices(ServiceQuery query);
	
	/**
	 *  Add a service to the registry.
	 *  @param service The service.
	 */
	// write
	public void addService(IServiceIdentifier service);
	
	/**
	 *  Add a local service to the registry.
	 *  @param service The local service.
	 */
	// write
	public void addLocalService(IService service);
	
	/**
	 *  Updates a service if the service meta-information
	 *  has changes.
	 *  
	 *  @param service The service.
	 */
	public void updateService(IServiceIdentifier service);
	
	/**
	 *  Remove a service from the registry.
	 *  @param service The service.
	 */
	// write
	public void removeService(IServiceIdentifier service);
	
	/**
	 *  Remove services of a platform from the registry.
	 *  @param platform The platform, null for everything.
	 */
	// write
	public void removeServices(IComponentIdentifier platform);
	
	/**
	 *  Remove services except from a platform from the registry.
	 *  @param platform The platform.
	 */
	// write
	//public void removeServicesExcept(IComponentIdentifier platform);
	
	/**
	 *  Add a service query to the registry.
	 *  @param query ServiceQuery.
	 */
	// write
	public  ISubscriptionIntermediateFuture addQuery(ServiceQuery query);
	
	/**
	 *  Remove a service query from the registry.
	 *  @param query ServiceQuery.
	 */
	// write
	public void removeQuery(final ServiceQuery query);
	
	/**
	 *  Remove all service queries of a specific component from the registry.
	 *  @param owner The query owner.
	 */
	// write
	public void removeQueries(IComponentIdentifier owner);
	
	/**
	 *  Remove all service queries of a specific platform from the registry.
	 *  @param platform The platform from which the query owner comes.
	 */
	// write
	public void removeQueriesOfPlatform(IComponentIdentifier platform);
	
	/**
	 *  Add an excluded component. 
	 *  @param The component identifier.
	 */
	// write
	public void addExcludedComponent(IComponentIdentifier cid);
	
	/**
	 *  Remove an excluded component. 
	 *  @param The component identifier.
	 */
	// write
	public void removeExcludedComponent(IComponentIdentifier cid);
	
	/**
	 *  Test if a service is included.
	 *  @param ser The service.
	 *  @return True if is included.
	 */
	// read
	//public boolean isIncluded(IComponentIdentifier cid, IServiceIdentifier ser);
	
	/** 
	 *  Returns the service proxy of a local service identified by service ID.
	 *  
	 *  @param serviceid The service ID.
	 *  @return The service proxy.
	 */
	public IService getLocalService(IServiceIdentifier serviceid);
	
	/**
	 *  Get all services.
	 *  @return All services (copy).
	 */
	public Set getAllServices();
	
	/**
	 *  Get all queries.
	 *  @return All queries (copy).
	 */
	public Set> getAllQueries();
	
	/**
	 *  Subscribe for query events.
	 */
	public ISubscriptionIntermediateFuture subscribeToQueries();
	
	/**
	 *  Returns the lock on the registry.
	 *  Care must be taken to perform proper unlocking
	 *  to avoid permanently blocking the registry.
	 *  Note that the lock is reentrant, so operations
	 *  can be performed while the lock is held.
	 *  
	 *  @return The registry lock.
	 */
	public ReadWriteLock getLock();
}