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 FBaseColIComparer.h
20 * @brief This is the header file for the %IComparer interface.
22 * This header file contains the declarations of the %IComparer interface.
24 #ifndef _FBASE_COL_ICOMPARER_H_
25 #define _FBASE_COL_ICOMPARER_H_
27 #include <FBaseTypes.h>
28 #include <FBaseObject.h>
31 namespace Tizen { namespace Base { namespace Collection
34 * @interface IComparer
35 * @brief This interface allows a derived class to compare 2 objects of the same type.
39 * The %IComparer interface allows a derived class to compare 2 objects of the same type.
41 class _OSP_EXPORT_ IComparer
45 * This polymorphic destructor should be overridden if required. @n
46 * This way, the destructors of the derived classes are called when the destructor of this interface is called.
50 virtual ~IComparer(void) { }
54 * Compares two given instances of the same type.
58 * @return An error code
59 * @param[in] obj1 The first object to compare
60 * @param[in] obj2 The second object to compare
61 * @param[out] cmp The result of comparison
62 * @exception E_SUCCESS The method is successful.
63 * @exception E_INVALID_ARG The specified object instances are not of the expected type.
64 * @remarks The value of @c cmp can be:
67 * < 0 if the value of @c obj1 is less than the value of @c obj2
68 * == 0 if the value of @c obj1 is equal to the value of @c obj2
69 * > 0 if the value of @c obj1 is greater than the value of @c obj2
72 virtual result Compare(const Tizen::Base::Object& obj1, const Tizen::Base::Object& obj2, int& cmp) const = 0;
76 // This method is for internal use only. Using this method can cause behavioral, security-related,
77 // and consistency-related issues in the application.
78 // This method is reserved and may change its name at any time without prior notice.
82 virtual void IComparer_Reserved1(void) { }
85 // This method is for internal use only. Using this method can cause behavioral, security-related,
86 // and consistency-related issues in the application.
87 // This method is reserved and may change its name at any time without prior notice.
91 virtual void IComparer_Reserved2(void) { }
94 }}} // Tizen::Base::Collection
96 #endif // _FBASE_COL_ICOMPARER_H_