udkapi/com/sun/star/container/XEnumerableMap.idl

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  25
  26 #ifndef __com_sun_star_container_XEnumerableMap_idl__
  27 #define __com_sun_star_container_XEnumerableMap_idl__
  28
  29 #include <com/sun/star/container/XMap.idl>
  30 #include <com/sun/star/container/XEnumeration.idl>
  31 #include <com/sun/star/lang/NoSupportException.idl>
  32
  33 //=============================================================================
  34
  35 module com { module sun { module star { module container {
  36
  37 //=============================================================================
  38
  39 /** extends <type>XMap</type> with enumeration capabilities.
  40
  41     <p>No assumption should be made about the ordering of the elements returned by the various enumerators.
  42     In particular, you cannot assume the elements are returned in the same order as they were inserted. Also,
  43     you should not expect the <code>XMap</code> implementation to make use of a possibly existing strict ordering
  44     defined on the domain of all possible key values.</p>
  45
  46     <p>You can create enumerators for the keys of the map, its values, and its key-value pairs.</p>
  47
  48     <p>In all cases, you can create an <em>isolated</em> enumerator, which works on a copy of the
  49     map's content. Such an iterator is not affected by changes done to the map after creation of
  50     the enumerator.</p>
  51
  52     <p>On the contrary, an enumerator which is <em>non-isolated</em> works directly on the map data.
  53     This is less expensive than an <em>isolated</em> enumerator, but means that changes to the map while
  54     an enumeration is running potentially invalidate your enumerator. The concrete behavior in this
  55     case is undefined, it's up to the service implementing the <code>XEnumerableMap</code> interface
  56     to specify it in more detail.</p>
  57
  58     <p>Implementations of this interface might decide to support only <em>isolated</em> enumerators, or
  59     only <em>non-isolated</em> enumerators. Again, it's up to the service to specify this. Requesting an
  60     enumerator type which is not supported will generally result in an <type scope="com::sun::star::lang">NoSupportException</type>
  61     being thrown.</p>
  62  */
  63 interface XEnumerableMap : XMap
  64 {
  65     /** creates a enumerator for the keys of the map
  66
  67         @param Isolated
  68             controls whether the newly create enumerator should be isolated from the map.
  69
  70         @throws ::com::sun::star::lang::NoSupportException
  71             if the specified enumerator method is not supported by the implementation.
  72     */
  73     XEnumeration createKeyEnumeration( [in] boolean Isolated )
  74         raises ( ::com::sun::star::lang::NoSupportException );
  75
  76     /** creates a enumerator for the values of the map
  77
  78         @param Isolated
  79             controls whether the newly create enumerator should be isolated from the map.
  80
  81         @throws ::com::sun::star::lang::NoSupportException
  82             if the specified enumerator method is not supported by the implementation.
  83     */
  84     XEnumeration createValueEnumeration( [in] boolean Isolated )
  85         raises ( ::com::sun::star::lang::NoSupportException );
  86
  87     /** creates a enumerator for the key-value pairs of the map
  88
  89         <p>The elements returned by the enumerator are instances of <type scope="com::sun::star::beans">Pair</type>,
  90         holding the key-value-pairs which are part of the map.</p>
  91
  92         @param Isolated
  93             controls whether the newly create enumerator should be isolated from the map.
  94
  95         @throws ::com::sun::star::lang::NoSupportException
  96             if the specified enumerator method is not supported by the implementation.
  97     */
  98     XEnumeration createElementEnumeration( [in] boolean Isolated )
  99         raises ( ::com::sun::star::lang::NoSupportException );
 100 };
 101
 102 //=============================================================================
 103
 104 }; }; }; };
 105
 106 //=============================================================================
 107
 108 #endif