67 lines
2 KiB
PHP
67 lines
2 KiB
PHP
<?php
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/**
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* Efficient concatenated text storage.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Base class for general text storage via the "object" flag in old_flags, or
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* two-part external storage URLs. Used for represent efficient concatenated
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* storage, and migration-related pointer objects.
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*/
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interface HistoryBlob {
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/**
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* Adds an item of text, returns a stub object which points to the item.
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* You must call setLocation() on the stub object before storing it to the
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* database
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*
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* @param string $text
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*
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* @return string The key for getItem()
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*/
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public function addItem( $text );
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/**
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* Get item by key, or false if the key is not present
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*
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* @param string $key
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*
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* @return string|bool
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*/
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public function getItem( $key );
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/**
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* Set the "default text"
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* This concept is an odd property of the current DB schema, whereby each text item has a revision
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* associated with it. The default text is the text of the associated revision. There may, however,
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* be other revisions in the same object.
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*
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* Default text is not required for two-part external storage URLs.
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*
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* @param string $text
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*/
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public function setText( $text );
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/**
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* Get default text.
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*
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* @return string|false
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*/
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public function getText();
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}
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