Watchable.java

/*
 * Copyright to the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.rioproject.watch;


import java.rmi.Remote;
import java.rmi.RemoteException;

/**
 * This interface is used to fetch WatchDataSource instances that have been
 * created and registered
 */
public interface Watchable extends Remote {
    /**
     * Returns an array of all WatchDataSource instances
     *
     * @return An array of WatchDataSource objects
     *
     * @throws RemoteException If communication errors happen
     */
    public WatchDataSource[] fetch() throws RemoteException;

    /**
     * Returns an array of WatchDataSource instances that match the input
     * <tt>id</tt>.
     *
     * @param id The identifier to fetch
     *
     * @return An array of WatchDataSource objects
     *
     * @throws RemoteException If communication errors happen
     */
    public WatchDataSource fetch(String id) throws RemoteException;

}