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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="vala-remove-example"></a>Vala example: Remove a password</h2></div></div></div>
<p>Here's how to remove a password from the running secret service,
like gnome-keyring or ksecretservice.</p>
<p>Each stored password has a set of attributes which are
used to find which password to remove. If multiple passwords match the
attributes, then the one stored most recently is removed.</p>
<p>These examples use <a class="link" href="vala-examples.html#vala-schema-example" title="Vala example: Define a password schema">the example
schema</a>.</p>
<p>This first example removes a password asynchronously, and is
appropriate for GUI applications so that the UI does not block.</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
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<td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="usertype">var</span><span class="normal"> attributes </span><span class="symbol">=</span><span class="normal"> </span><span class="usertype">new</span><span class="normal"> GLib</span><span class="symbol">.</span><span class="normal">HashTable</span><span class="symbol"><</span><span class="normal">string</span><span class="symbol">,</span><span class="normal">string</span><span class="symbol">></span><span class="normal"> </span><span class="symbol">();</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"number"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"8"</span><span class="symbol">;</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"string"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"eight"</span><span class="symbol">;</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"even"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"true"</span><span class="symbol">;</span>
<span class="normal">Secret</span><span class="symbol">.</span><span class="normal">password_clearv</span><span class="symbol">.</span><span class="function">begin</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">example_schema</span><span class="symbol">,</span><span class="normal"> attributes</span><span class="symbol">,</span><span class="normal"> null</span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">obj</span><span class="symbol">,</span><span class="normal"> async_res</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">=></span><span class="normal"> </span><span class="cbracket">{</span>
<span class="normal"> </span><span class="type">bool</span><span class="normal"> removed </span><span class="symbol">=</span><span class="normal"> Secret</span><span class="symbol">.</span><span class="normal">password_clearv</span><span class="symbol">.</span><span class="function">end</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">async_res</span><span class="symbol">);</span>
<span class="cbracket">}</span><span class="symbol">);</span></pre></td>
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<p>This next example removes a password synchronously. The function
call will block until the removal completes. So this is appropriate for
non GUI applications.</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="usertype">var</span><span class="normal"> attributes </span><span class="symbol">=</span><span class="normal"> </span><span class="usertype">new</span><span class="normal"> GLib</span><span class="symbol">.</span><span class="normal">HashTable</span><span class="symbol"><</span><span class="normal">string</span><span class="symbol">,</span><span class="normal">string</span><span class="symbol">></span><span class="normal"> </span><span class="symbol">();</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"number"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"8"</span><span class="symbol">;</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"string"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"eight"</span><span class="symbol">;</span>
<span class="normal">attributes</span><span class="symbol">[</span><span class="string">"even"</span><span class="symbol">]</span><span class="normal"> </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"true"</span><span class="symbol">;</span>
<span class="type">bool</span><span class="normal"> removed </span><span class="symbol">=</span><span class="normal"> Secret</span><span class="symbol">.</span><span class="function">password_clear_sync</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">example_schema</span><span class="symbol">,</span><span class="normal"> null</span><span class="symbol">,</span>
<span class="normal"> </span><span class="string">"number"</span><span class="symbol">,</span><span class="normal"> </span><span class="number">8</span><span class="symbol">,</span><span class="normal"> </span><span class="string">"string"</span><span class="symbol">,</span><span class="normal"> </span><span class="string">"eight"</span><span class="symbol">,</span><span class="normal"> </span><span class="string">"even"</span><span class="symbol">,</span><span class="normal"> true</span><span class="symbol">);</span>
<span class="comment">/* removed will be true if the password was removed */</span></pre></td>
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