1<?php
2
3/*
4 * This file is part of SwiftMailer.
5 * (c) 2004-2009 Chris Corbyn
6 *
7 * For the full copyright and license information, please view the LICENSE
8 * file that was distributed with this source code.
9 */
10
11/**
12 * A null KeyCache that does not cache at all.
13 *
14 * @author Chris Corbyn
15 */
16class Swift_KeyCache_NullKeyCache implements Swift_KeyCache
17{
18    /**
19     * Set a string into the cache under $itemKey for the namespace $nsKey.
20     *
21     * @see MODE_WRITE, MODE_APPEND
22     *
23     * @param string $nsKey
24     * @param string $itemKey
25     * @param string $string
26     * @param int    $mode
27     */
28    public function setString($nsKey, $itemKey, $string, $mode)
29    {
30    }
31
32    /**
33     * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
34     *
35     * @see MODE_WRITE, MODE_APPEND
36     *
37     * @param string                 $nsKey
38     * @param string                 $itemKey
39     * @param Swift_OutputByteStream $os
40     * @param int                    $mode
41     */
42    public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
43    {
44    }
45
46    /**
47     * Provides a ByteStream which when written to, writes data to $itemKey.
48     *
49     * NOTE: The stream will always write in append mode.
50     *
51     * @param string                $nsKey
52     * @param string                $itemKey
53     * @param Swift_InputByteStream $writeThrough
54     *
55     * @return Swift_InputByteStream
56     */
57    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
58    {
59    }
60
61    /**
62     * Get data back out of the cache as a string.
63     *
64     * @param string $nsKey
65     * @param string $itemKey
66     *
67     * @return string
68     */
69    public function getString($nsKey, $itemKey)
70    {
71    }
72
73    /**
74     * Get data back out of the cache as a ByteStream.
75     *
76     * @param string                $nsKey
77     * @param string                $itemKey
78     * @param Swift_InputByteStream $is      to write the data to
79     */
80    public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
81    {
82    }
83
84    /**
85     * Check if the given $itemKey exists in the namespace $nsKey.
86     *
87     * @param string $nsKey
88     * @param string $itemKey
89     *
90     * @return bool
91     */
92    public function hasKey($nsKey, $itemKey)
93    {
94        return false;
95    }
96
97    /**
98     * Clear data for $itemKey in the namespace $nsKey if it exists.
99     *
100     * @param string $nsKey
101     * @param string $itemKey
102     */
103    public function clearKey($nsKey, $itemKey)
104    {
105    }
106
107    /**
108     * Clear all data in the namespace $nsKey if it exists.
109     *
110     * @param string $nsKey
111     */
112    public function clearAll($nsKey)
113    {
114    }
115}
116