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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: IQueryInterface.java,v $
* $Revision: 1.5 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.uno;
/**
* This is the delegator interface for Java objects implementing interfaces of
* an underlying UNO object.
*
* <p>Calls are delegated through the <code>UnoRuntime</code> to this
* interface. Implement this interface in case you want to customize the
* behaviour of <code>UnoRuntime.queryInterface</code>.</p>
*
* @see com.sun.star.uno.UnoRuntime
*/
public interface IQueryInterface {
/**
* Returns the unique object identifier (OID) of the underlying UNO object.
*
* @return the OID of the underlying object
*/
String getOid();
/**
* Returns an object implementing the requested interface type.
*
* @param type the requested UNO interface type; must be a <code>Type</code>
* object representing a UNO interface type
* @return a reference to the requested UNO interface type if available,
* otherwise <code>null</code>
* @see com.sun.star.uno.UnoRuntime
*/
Object queryInterface(Type type);
/**
* Tests if the given reference represents a facet of the underlying UNO
* object.
*
* @param object a reference to any Java object representing (a facet of) a
* UNO object; may be <code>null</code>
* @return <code>true</code> if and only if <code>object</code> is not
* <code>null</code> and represents the same UNO object as this object
*/
boolean isSame(Object object);
}
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