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KDE 4.9 PyKDE API Reference
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<h1>Service Class Reference</h1>
<code>from PyKDE4.nepomuk import *</code>
<p>
Inherits: QObject<br />
Namespace: <a href="../nepomuk/Nepomuk.html">Nepomuk</a><br />
<h2>Detailed Description</h2>
<p>\class Service nepomukservice.h Nepomuk/Service
</p>
<p>
Base class for all Nepomuk services.
</p>
<p>
A %Nepomuk service is intended to perform some kind of
operation on the %Nepomuk data storage. This can include
data gathering, data enrichment, or enhanced data query.
</p>
<p>
%Nepomuk services are started and managed by the %Nepomuk
server. Very much like KDED modules a %Nepomuk service
has autostart and start-on-demand properties. In addition
a %Nepomuk service can define an arbitrary number of
dependencies which are necessary to run the service. These
dependencies name other services.
</p>
<p>
To create a new %Nepomuk service one derives a new class from
Nepomuk.Service and exports it as a standard KDE module, i.e.
plugin.
</p>
<p>
<pre class="fragment">
class MyService : public Nepomuk.Service
{
// do fancy stuff
};
</pre>
</p>
<p>
Export it as a %Nepomuk service plugin:
</p>
<p>
<pre class="fragment">
NEPOMUK_EXPORT_SERVICE(MyService, "mynepomukservice")
</pre>
</p>
<p>
A desktop file describes the service's properties:
</p>
<p>
<pre class="fragment">
[Desktop Entry]
Type=Service
X-KDE-ServiceTypes=NepomukService
X-KDE-Library=mynepomukservice
X-KDE-Nepomuk-autostart=true
X-KDE-Nepomuk-start-on-demand=false
# Dependencies default to 'nepomukstorage'
X-KDE-Nepomuk-dependencies=nepomukfoobar
Name=My fancy Nepomuk Service
Comment=A Nepomuk service that does fancy things
</pre>
</p>
<p>
The %Nepomuk server will automatically export all D-Bus
interfaces defined on the service instance. Thus, the
simplest way to export methods via D-Bus is by marking
them with .
</p>
<p>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Sebastian Trueg <trueg@kde.org> </dd></dl>
</p>
<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.1
</dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Service">__init__</a> (self, QObject parent=0, bool delayedInitialization=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Model.html">Soprano.Model</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#mainModel">mainModel</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setServiceInitialized">setServiceInitialized</a> (self, bool success)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="Service"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>delayedInitialization=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Create a new Service.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>parent</em> </td><td> The parent object
</td></tr> </table></dl>
<p> </p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>delayedInitialization</em> </td><td> If <b>true</b> the service will not
be usable until setServiceInitialized has been called.
This allows to design services that need to perform
long initialization tasks.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="mainModel"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../soprano/Soprano.Model.html">Soprano.Model</a> mainModel</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> A wrapper model which provides
a connection to the %Nepomuk server.
</dd></dl>
</p></div></div><a class="anchor" name="setServiceInitialized"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setServiceInitialized</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>success</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>A %Nepomuk service can make use of a warmup phase in which
it is not usable yet. Call this method once your service
is fully initialized.
</p>
<p>
Most services do not need to call this method.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>success</em> </td><td> Set to true if initialization was
successful, false otherwise.
</td></tr>
</table></dl>
<p> \sa Service.Service
</p></div></div>
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