Quelle IQueryInterface.java Sprache: JAVA

/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
*   Licensed to the Apache Software Foundation (ASF) under one or more
*   contributor license agreements. See the NOTICE file distributed
*   with this work for additional information regarding copyright
*   ownership. The ASF licenses this file to you under the Apache
*   License, Version 2.0 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/

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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