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<title>Interface XPersistObject</title>
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<td class="title">interface XPersistObject</td>
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<td/></tr>
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<td><dl>
<dt><b>Description</b></dt>
<dd>allows to make UNO objects persistent

 </dd>
<dd><p>Every UNO object, that wants to be serializable, should implement
 this interface. The object stores stores itself, when the
 write method is called.
 <p>
 The object needs to be created before it deserializes
 itself again (by using the read method). Therefor it must be
 createable by name via a factory, which is in general
 the global service manager. The create and read mechanism
 is implemented by the <a href="ObjectInputStream.html">ObjectInputStream</a>.

 <p>The serialization format (the series of strings, integers, objects) must
 be specified at the specification of the concrete service.

 <p>The interface does not support any special versioning mechanism.

 </dd>
<dt><b>See also</b></dt>
<dd><a href="XObjectOutputStream.html">XObjectOutputStream</a>, <a href="XObjectInputStream.html">XObjectInputStream</a></dd>
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<td class="imsum_left"><a href="#getServiceName">getServiceName</a></td>
<td class="imsum_right">gives the service name of the object

 &nbsp;</td>
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<td class="imsum_left"><a href="#write">write</a></td>
<td class="imsum_right">writes all the persistent data of the object to the stream.
 &nbsp;</td>
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<td class="imsum_left"><a href="#read">read</a></td>
<td class="imsum_right">reads all the persistent data of the object from the stream.
 &nbsp;</td>
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<td class="imdetail"><a name="getServiceName" class="membertitle">getServiceName</a><table border="0" width="96%" cellpadding="5" cellspacing="0" class="table-in-method" bgcolor="#ffffff" align="center">
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<td><table class="table-in-method" border="0">
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<td valign="top" colspan="3">string</td>
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<td valign="top"><b>getServiceName</b>();</td>
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<dl>
<dt><b>Description</b></dt>
<dd>gives the service name of the object

 </dd>
<dt><b>Returns</b></dt>
<dd>the service name that specifies the behavior and the
 persistent data format of this implementation.

 <p>This name is used to create such an object by a factory
 during deserialization. </p>

 </dd>
<dt><b>See also</b></dt>
<dd>::com::sun::star::<a href="../lang/module-ix.html">lang</a>::<a href="../lang/XServiceInfo.html">XServiceInfo</a>::<a href="../lang/XServiceInfo.html#getAvailableServiceNames">getAvailableServiceNames</a></dd>
</dl>
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<td class="imdetail"><a name="write" class="membertitle">write</a><table border="0" width="96%" cellpadding="5" cellspacing="0" class="table-in-method" bgcolor="#ffffff" align="center">
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<td><table class="table-in-method" border="0">
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<td valign="top" colspan="3">void</td>
</tr>
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<td valign="top"><b>write</b>(</td>
<td valign="top">[in] <a href="XObjectOutputStream.html">XObjectOutputStream</a></td>
<td valign="bottom">&nbsp;OutStream )</td>
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<td valign="top" align="right">raises( </td>
<td valign="top" colspan="2"><a href="IOException.html">IOException</a> );</td>
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<hr>
<dl>
<dt><b>Description</b></dt>
<dd>writes all the persistent data of the object to the stream.
 </dd>
<dd><p>The implementation
 must write the data in the order documented in the service specification.
 </dd>
<dt><b>Parameter OutStream</b></dt>
<dd>the stream, the data shall be written to. The stream
 supports simple types and other XPersistObject implementations.
 </dd>
</dl>
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<td class="imdetail"><a name="read" class="membertitle">read</a><table border="0" width="96%" cellpadding="5" cellspacing="0" class="table-in-method" bgcolor="#ffffff" align="center">
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<td><table class="table-in-method" border="0">
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<td valign="top" colspan="3">void</td>
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<td valign="top"><b>read</b>(</td>
<td valign="top">[in] <a href="XObjectInputStream.html">XObjectInputStream</a></td>
<td valign="bottom">&nbsp;InStream )</td>
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<td valign="top" align="right">raises( </td>
<td valign="top" colspan="2"><a href="IOException.html">IOException</a> );</td>
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<hr>
<dl>
<dt><b>Description</b></dt>
<dd>reads all the persistent data of the object from the stream.
 </dd>
<dd><p>In case
 other XPersistObjects are read from the stream, the implementation uses a factory
 to create these objects (in general the global service manager).
 <p> The implementation must read the data in the order documented at
 the service specification.
 </dd>
<dt><b>Parameter InStream</b></dt>
<dd>the stream, the data shall be read from.
 </dd>
</dl>
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