зеркало из https://github.com/mozilla/gecko-dev.git
54 строки
2.2 KiB
Java
54 строки
2.2 KiB
Java
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/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1997
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* Netscape Communications Corporation. All Rights Reserved.
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*
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* Created: Mauro Botelho <mabotelh@email.com>, 20 Mar 1999.
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*/
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package grendel.storage.mdb;
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/** nsIMdbObject: base class for all message db class interfaces
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**
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** factory: all nsIMdbObjects from the same code suite have the same factory
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**
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** refcounting: both strong and weak references, to ensure strong refs are
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** acyclic, while weak refs can cause cycles. CloseMdbObject() is
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** called when (strong) use counts hit zero, but clients can call this close
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** method early for some reason, if absolutely necessary even though it will
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** thwart the other uses of the same object. Note that implementations must
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** cope with close methods being called arbitrary numbers of times. The COM
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** calls to AddRef() and release ref map directly to strong use ref calls,
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** but the total ref count for COM objects is the sum of weak & strong refs.
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*/
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public interface nsIMdbObject { // msg db base class
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// { ===== begin nsIMdbObject methods =====
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// { ----- begin attribute methods -----
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public boolean IsFrozenMdbObject(nsIMdbEnv ev);
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// same as nsIMdbPort::GetIsPortReadonly() when this object is inside a port.
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// } ----- end attribute methods -----
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// { ----- begin factory methods -----
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public nsIMdbFactory GetMdbFactory(nsIMdbEnv ev);
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// } ----- end factory methods -----
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public int CloseMdbObject(nsIMdbEnv ev); // called at strong refs zero
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public boolean IsOpenMdbObject(nsIMdbEnv ev);
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// } ----- end ref counting -----
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}
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