2 // Open Service Platform
3 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 // Licensed under the Apache License, Version 2.0 (the License);
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
19 * @file FBaseColIMapEnumeratorT.h
20 * @brief This is the header file for the %IMapEnumeratorT interface.
22 * This header file contains the declarations of the %IMapEnumeratorT interface.
24 #ifndef _FBASE_COL_IMAP_ENUMERATOR_T_H_
25 #define _FBASE_COL_IMAP_ENUMERATOR_T_H_
27 #include <FBaseColIEnumeratorT.h>
28 #include <FBaseColMapEntryT.h>
31 namespace Tizen { namespace Base { namespace Collection
35 * @interface IMapEnumeratorT
36 * @brief This interface supports simple iteration over a template-based map. @n
37 * Using this method, you can only access the elements in the map. You cannot modify the elements.
42 * An enumerator remains valid as long as the map remains unchanged.
43 * If changes are made to the map, such as adding, modifying, or
44 * deleting elements, the enumerator is irrecoverably invalidated. The next call to any method returns an @c E_INVALID_OPERATION message.
46 * The %IMapEnumeratorT interface supports simple iteration over a template-based map.
47 * Using this method, you can only access the elements in the map. You cannot modify the elements.
49 * For more information on the class features, see <a href="../org.tizen.native.appprogramming/html/guide/base/hashmap_multihashmap.htm">HashMap and MultiHashMap</a>.
52 template< class KeyType, class ValueType >
54 : public virtual IEnumeratorT< MapEntryT< KeyType, ValueType > >
58 * This polymorphic destructor should be overridden if required. @n
59 * This way, the destructors of the derived classes are called when the destructor of this interface is called.
63 virtual ~IMapEnumeratorT(void) {}
66 * Gets the current key in the map.
70 * @return An error code
71 * @param[out] key The current key
72 * @exception E_INVALID_OPERATION The current state of the instance prohibits the execution of the specified operation. @n
73 * The enumerator is currently positioned before the first element or after the last element or the collection is modified after the enumerator is created.
74 * @exception E_SUCCESS The method is successful.
76 virtual result GetKey(KeyType& key) const = 0;
79 * Gets the current value in the map.
83 * @return An error code
84 * @param[out] value The current value
85 * @exception E_INVALID_OPERATION The current state of the instance prohibits the execution of the specified operation. @n
86 * The enumerator is currently positioned before the first element or after the last element or the collection is modified after the enumerator is created.
87 * @exception E_SUCCESS The method is successful.
89 virtual result GetValue(ValueType& value) const = 0;
93 }}} // Tizen::Base::Collection
95 #endif // _FBASE_COL_IMAP_ENUMERATOR_H_