star/uno/XInterface.idl

35     <p> It provides lifetime control by reference counting and the
49     <p> The UNO object does not export the state of the reference count (acquire() and
51         should not make any assumption on the concrete value of the reference count
62         return with a interface reference of the requested type or with a void any.
67         1) If queryInterface on a specific object has once returned a valid interface reference
68           for a given type, it must return a valid reference for any successive queryInterface
71         2) If queryInterface on a specific object has once returned a null reference
72         for a given type, it must always return a null reference for the same type.
74         3) If queryInterface on a reference A returns reference B, queryInterface on
75         B for Type A must return interface reference A or calls made on the returned
76         reference must be equivalent to calls made on reference A.
78         4) If queryInterface on a reference A returns reference B, queryInterface on
79         A and B for XInterface must return the same interface reference (object identity).
89         @param aType a UNO interface type, for which an object reference shall be obtained.
90         @return an interface reference in case the requested interface is supported by the object,
96 	/** increases the reference counter by one.
99         UNO object, it is often said, that you have a reference or a hard reference
104         a hard reference to it.
114 	/** decreases the reference counter by one.
115 		<p>When the reference counter reaches 0, the object gets deleted.</p>
117         or clearing the reference to an object.