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108 lines
2.9 KiB
PHP
108 lines
2.9 KiB
PHP
<?php
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/*
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* This file is part of SwiftMailer.
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* (c) 2004-2009 Chris Corbyn
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Provides a mechanism for storing data using two keys.
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*
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* @package Swift
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* @subpackage KeyCache
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* @author Chris Corbyn
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*/
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interface Swift_KeyCache
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{
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/** Mode for replacing existing cached data */
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const MODE_WRITE = 1;
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/** Mode for appending data to the end of existing cached data */
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const MODE_APPEND = 2;
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/**
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* Set a string into the cache under $itemKey for the namespace $nsKey.
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*
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* @see MODE_WRITE, MODE_APPEND
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*
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* @param string $nsKey
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* @param string $itemKey
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* @param string $string
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* @param integer $mode
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*/
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public function setString($nsKey, $itemKey, $string, $mode);
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/**
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* Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
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*
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* @see MODE_WRITE, MODE_APPEND
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*
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* @param string $nsKey
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* @param string $itemKey
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* @param Swift_OutputByteStream $os
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* @param integer $mode
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*/
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public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode);
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/**
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* Provides a ByteStream which when written to, writes data to $itemKey.
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*
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* NOTE: The stream will always write in append mode.
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* If the optional third parameter is passed all writes will go through $is.
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*
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* @param string $nsKey
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* @param string $itemKey
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* @param Swift_InputByteStream $is optional input stream
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*
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* @return Swift_InputByteStream
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*/
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public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $is = null);
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/**
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* Get data back out of the cache as a string.
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*
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* @param string $nsKey
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* @param string $itemKey
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*
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* @return string
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*/
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public function getString($nsKey, $itemKey);
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/**
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* Get data back out of the cache as a ByteStream.
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*
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* @param string $nsKey
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* @param string $itemKey
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* @param Swift_InputByteStream $is stream to write the data to
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*/
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public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is);
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/**
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* Check if the given $itemKey exists in the namespace $nsKey.
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*
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* @param string $nsKey
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* @param string $itemKey
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*
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* @return boolean
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*/
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public function hasKey($nsKey, $itemKey);
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/**
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* Clear data for $itemKey in the namespace $nsKey if it exists.
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*
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* @param string $nsKey
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* @param string $itemKey
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*/
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public function clearKey($nsKey, $itemKey);
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/**
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* Clear all data in the namespace $nsKey if it exists.
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*
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* @param string $nsKey
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*/
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public function clearAll($nsKey);
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}
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