Oracle Coherence for C++ API
Release 3.6.0.0
E15728-01

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# coherence/lang/SubscriptHolder.hpp

    00001 /*
    00002 * SubscriptHolder.hpp
    00003 *
    00004 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
    00005 *
    00006 * Oracle is a registered trademarks of Oracle Corporation and/or its
    00007 * affiliates.
    00008 *
    00009 * This software is the confidential and proprietary information of Oracle
    00010 * Corporation. You shall not disclose such confidential and proprietary
    00011 * information and shall use it only in accordance with the terms of the
    00012 * license agreement you entered into with Oracle.
    00013 *
    00014 * This notice may not be removed or altered.
    00015 */
    00016 #ifndef COH_SUBSCRIPT_HOLDER_HPP
    00017 #define COH_SUBSCRIPT_HOLDER_HPP
    00018
    00019 #include "coherence/lang/compatibility.hpp"
    00020
    00021 #include "coherence/lang/TypedHandle.hpp"
    00022 #include "coherence/lang/TypedHolder.hpp"
    00023
    00024 COH_OPEN_NAMESPACE2(coherence,lang)
    00025
    00026
    00027 /**
    00028 * A TypedHolder implementation which supports automatic delegation of the
    00029 * subscript operator.
    00030 *
    00031 * @author mf  2009.03.10
    00032 */
    00033 template<class T, class ET, class IT = size32_t>
    00034 class SubscriptHolder
    00035     : public TypedHolder<T>
    00036     {
    00037     // ----- typedefs -------------------------------------------------------
    00038
    00039     typedef ET ElementType;
    00040
    00041
    00042     // ----- constructors ---------------------------------------------------
    00043
    00044     public:
    00045         /**
    00046         * Create an empty SubscriptHolder.
    00047         */
    00048         SubscriptHolder()
    00049             : TypedHolder<T>()
    00050             {
    00051             }
    00052
    00053         /**
    00054         * Create a new SubscriptHolder from the TypedHandle with a type
    00055         * conversion.
    00056         */
    00057         template<class DT> SubscriptHolder<T, ET, IT>(const TypedHandle<DT>& that)
    00058             : TypedHolder<T>(that)
    00059             {
    00060             }
    00061
    00062         /**
    00063         * Create a new SubscriptHolder from the TypedHolder with a type
    00064         * conversion.
    00065         */
    00066         template<class DT> SubscriptHolder<T, ET, IT>(const TypedHolder<DT>& that)
    00067             : TypedHolder<T>(that)
    00068             {
    00069             }
    00070
    00071         /**
    00072         * Create a new SubscriptHolder from the raw pointer.
    00073         */
    00074         SubscriptHolder(T* o)
    00075             : TypedHolder<T>(o)
    00076             {
    00077             }
    00078
    00079         /**
    00080         * The copy constructor.
    00081         */
    00082         SubscriptHolder<T, ET, IT>(const SubscriptHolder<T, ET, IT>& that)
    00083             : TypedHolder<T>(that)
    00084             {
    00085             }
    00086
    00087         /**
    00088         * The subscript operator.
    00089         */
    00090         ElementType& operator[](IT i) const
    00091             {
    00092             const T* cpo = TypedHolder<T>::m_cpo;
    00093             if (NULL == cpo)
    00094                 {
    00095                 coh_throw_npe(typeid(T));
    00096                 }
    00097             return (*cpo)[i];
    00098             }
    00099     };
    00100
    00101 COH_CLOSE_NAMESPACE2
    00102
    00103 #endif // COH_SUBSCRIPT_HOLDER_HPP

Copyright © 2000, 2010, Oracle and/or its affiliates. All rights reserved.