зеркало из https://github.com/mozilla/gecko-dev.git
63 строки
2.7 KiB
Java
63 строки
2.7 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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/*| nsIMdbCursor: base cursor class for iterating row cells and table rows
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**|
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**|| count: the number of elements in the collection (table or row)
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**|
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**|| seed: the change count in the underlying collection, which is synced
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**| with the collection when the iteration position is set, and henceforth
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**| acts to show whether the iter has lost collection synchronization, in
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**| case it matters to clients whether any change happens during iteration.
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**|
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**|| pos: the position of the current element in the collection. Negative
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**| means a position logically before the first element. A positive value
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**| equal to count (or larger) implies a position after the last element.
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**| To iterate over all elements, set the position to negative, so subsequent
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**| calls to any 'next' method will access the first collection element.
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**|
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**|| doFailOnSeedOutOfSync: whether a cursor should return an error if the
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**| cursor's snapshot of a table's seed becomes stale with respect the table's
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**| current seed value (which implies the iteration is less than total) in
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**| between to cursor calls that actually access collection content. By
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**| default, a cursor should assume this attribute is false until specified,
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**| so that iterations quietly try to re-sync when they loose coherence.
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|*/
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public interface nsIMdbCursor extends nsIMdbObject { // collection iterator
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// { ===== begin nsIMdbCursor methods =====
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// { ----- begin attribute methods -----
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public int GetCount(nsIMdbEnv ev); // readonly
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public int GetSeed(nsIMdbEnv ev); // readonly
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public void SetPos(nsIMdbEnv ev, int inPos); // mutable
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public int GetPos(nsIMdbEnv ev);
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public void SetDoFailOnSeedOutOfSync(nsIMdbEnv ev, boolean inFail);
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public boolean GetDoFailOnSeedOutOfSync(nsIMdbEnv ev);
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// } ----- end attribute methods -----
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// } ===== end nsIMdbCursor methods =====
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};
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