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/*
 * Copyright (c) 2014, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.jvnet.hk2.internal;

/**
 * A closeable object is one that can be closed once, and
 * can not be opened again
 * 
 * @author jwells
 *
 */
public interface Closeable {
    /**
     * Idempotent close method.  Returns true if
     * the instance had already been closed
     * 
     * @return true if the object had already
     * been closed, false otherwise
     */
    public boolean close();
    
    /**
     * Returns true if the instance has been
     * closed
     * 
     * @return true if the object is closed
     */
    public boolean isClosed();

}