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package com.sun.grizzly.cometd;

import com.sun.grizzly.cometd.bayeux.Data;
import java.util.Set;

/**
 * Context, passed to a {@link PublishInterceptor}.
 * 
 * @author Alexey Stashok
 */
public interface PublishContext {
    /**
     * Get publish channel
     *
     * @return channel id (String)
     */
    String getChannel();

    /**
     * Get {@link DataHandler} of the client, who published the message
     *
     * @return {@link DataHandler} of the client, who published the message.
     */
    DataHandler getSenderClient();

    /**
     * Lookup {@link DataHandler} of the client.
     *
     * @param clientId
     * @return client's associated {@link DataHandler}
     */
    DataHandler lookupClientHandler(String clientId);

    /**
     * Lookup {@link DataHandler}s of clients, which are registered on the channel
     *
     * @param channelId
     * @return {@link DataHandler}s of clients, which are registered on the channel
     */
    Set lookupClientHandlers(String channelId);

    /**
     * Get the published data.
     * 
     * @return the published data.
     */
    Data getData();
}