office-gobmx/udkapi/com/sun/star/io/ObjectOutputStream.idl

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#ifndef __com_sun_star_io_ObjectOutputStream_idl__
#define __com_sun_star_io_ObjectOutputStream_idl__

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

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

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



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

/** 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; futhermore, 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>

    @garantees
    <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

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