xref: /aoo42x/main/udkapi/com/sun/star/io/ObjectOutputStream.idl (revision 86e1cf34)

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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#ifndef __com_sun_star_io_ObjectOutputStream_idl__
#define __com_sun_star_io_ObjectOutputStream_idl__

#ifndef __com_sun_star_io_XObjectOutputStream_idl__
#include <com/sun/star/io/XObjectOutputStream.idl>
#endif

#ifndef __com_sun_star_io_XActiveDataSource_idl__
#include <com/sun/star/io/XActiveDataSource.idl>
#endif

#ifndef __com_sun_star_io_XConnectable_idl__
#include <com/sun/star/io/XConnectable.idl>
#endif


//=============================================================================

module com {  module sun {  module star {  module io {

//=============================================================================

// DocMerge from xml: service com::sun::star::io::ObjectOutputStream
/** is a stream which allows writing the data of persistent objects.

	<p>Implementations of this service must fulfill the specifications of the
	<type>DataOutputStream</type> service; furthermore, the stream needs to be chained to a
	<type>XMarkableStream</type>. Therefore, it also provides the <type>XMarkableStream</type>
	interface, but it delegates the calls to the chained object.
	The written objects are held until this instance is destroyed.
	The references to the objects are written as four-byte integers
	and begin at 1. Data format is written: </p>
	<pre>
	short   InfoLength
	long    ObjectReference // 0 indicates no object
	UTF     ServiceName     // length of 0 indicates this is only a reference
	long    ObjectLength    // 0 if it is a reference or no object, otherwise the len of the object data
	Object  ObjectData      // the data of the object
	</pre>

	@guarantees
	<ul>
		<li>-thread safe </li>
		<li>-allow buffer size is 2 ^ 31 -1 </li>
		<li>-maximum object reference identifier is the number of objects.  </li>
		<li>-object reference identifier 0 indicates no object </li>
	</ul>
 */
published service ObjectOutputStream
{
    /** allows to write the data to the stream.
     */
	interface com::sun::star::io::XObjectOutputStream;

	/** allows to set the underlying outputstream */
	interface com::sun::star::io::XActiveDataSource;

	/** allows to navigate via a chain of streams */
	interface com::sun::star::io::XConnectable;

};

//=============================================================================

}; }; }; };

/*=============================================================================

=============================================================================*/
#endif