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package net.sf.flock;
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import java.net.URL;
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import java.util.Collection;
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/**
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* Service interface for managing subscriptions.
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*
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* @version $Revision$
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* @author $Author$
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*/
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public interface SubscriptionManagerI {
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/**
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* Short version of subscribe.
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*
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* @param url
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* @param metaData
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* @return SubscriptionI[]
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* @throws FlockResourceException
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*/
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public SubscriptionI[] subscribe(URL url, MetaData metaData) throws FlockResourceException;
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public SubscriptionI[] subscribe(SubscriptionInfoI subscriptionInfo, boolean load) throws FlockResourceException;
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/**
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* Remove a subscription.
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*
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* @param url subscription location
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* @throws FlockResourceException
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*/
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public void unsubscribe(URL url) throws FlockResourceException;
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/**
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* Get a given a subscription.
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*
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* @param url subscription location
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* @return SubscriptionI
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* @throws FlockResourceException
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*/
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public SubscriptionI getSubscription(URL url) throws FlockResourceException;
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/**
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* Get lightweight information about all subscriptions.
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*
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* @return Collection of SubscriptionInfoI objects
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* @throws FlockResourceException
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*/
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public Collection getSubscriptionInfos() throws FlockResourceException;
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/**
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* Refresh a subscription (synchronously).
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*
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* @param url subscription location
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* @throws FlockResourceException
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*/
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public void refresh(URL url) throws FlockResourceException;
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/**
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* Initiate asynchronous refresh cycle.
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*
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* @return boolean false if refresh cycle is already in progress
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*/
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public boolean refreshAll();
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/**
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*
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* @param filters
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* @return Collection
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* @throws FlockResourceException
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*/
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public Collection findItems(FilterI[] filters) throws FlockResourceException;
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}
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