xref: /aoo41x/main/udkapi/com/sun/star/io/XPersistObject.idl (revision 408a4873)

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#ifndef __com_sun_star_io_XPersistObject_idl__
#define __com_sun_star_io_XPersistObject_idl__

#ifndef __com_sun_star_uno_XInterface_idl__
#include <com/sun/star/uno/XInterface.idl>
#endif

#ifndef __com_sun_star_io_IOException_idl__
#include <com/sun/star/io/IOException.idl>
#endif


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

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

 published interface XObjectInputStream;
 published interface XObjectOutputStream;

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

/** allows to make UNO objects persistent

  <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 <type scope="com::sun::star::io">ObjectInputStream</type>.

     <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.

     @see com::sun::star::io::XObjectOutputStream
     @see com::sun::star::io::XObjectInputStream
 */
published interface XPersistObject: com::sun::star::uno::XInterface
{
	//-------------------------------------------------------------------------

	/** gives the service name of the object

      @returns
			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>

		@see com::sun::star::lang::XServiceInfo::getAvailableServiceNames
	 */
	string getServiceName();

	//-------------------------------------------------------------------------

	// DocMerge from xml: method com::sun::star::io::XPersistObject::write
	/** writes all the persistent data of the object to the stream.
        <p>The implementation
        must write the data in the order documented in the service specification.
        @param OutStream the stream, the data shall be written to. The stream
               supports simple types and other XPersistObject implementations.
	 */
	void write( [in] com::sun::star::io::XObjectOutputStream OutStream )
			raises( com::sun::star::io::IOException );

	//-------------------------------------------------------------------------

	// DocMerge from xml: method com::sun::star::io::XPersistObject::read
	/** reads all the persistent data of the object from the stream.
        <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.
        @param InStream the stream, the data shall be read from.
	 */
	void read( [in] com::sun::star::io::XObjectInputStream InStream )
			raises( com::sun::star::io::IOException );

};

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

}; }; }; };

#endif