thin-client/include/ignite/thin/cache/cache_entry.h

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/*
 * Copyright 2022 GridGain Systems, Inc. and Contributors.
 *
 * Licensed under the GridGain Community Edition License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.gridgain.com/products/software/community-edition/gridgain-community-edition-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _IGNITE_THIN_CACHE_CACHE_ENTRY
#define _IGNITE_THIN_CACHE_CACHE_ENTRY
 
#include <utility>
#include <ignite/common/common.h>
 
namespace ignite
{
    namespace impl
    {
        namespace thin
        {
            template<typename T>
            class ReadableImpl;
        }
    }
    namespace thin
    {
        namespace cache
        {
            template<typename K, typename V>
            class CacheEntry
            {
                friend class ignite::impl::thin::ReadableImpl< ignite::thin::cache::CacheEntry<K, V> >;
            public:
                CacheEntry() :
                    key(),
                    val(),
                    hasValue(false)
                {
                    // No-op.
                }
 
                CacheEntry(const K& key, const V& val) :
                    key(key),
                    val(val),
                    hasValue(true)
                {
                    // No-op.
                }
 
                CacheEntry(const CacheEntry& other) :
                    key(other.key),
                    val(other.val),
                    hasValue(other.hasValue)
                {
                    // No-op.
                }
 
                CacheEntry(const std::pair<K, V>& p) :
                    key(p.first),
                    val(p.second),
                    hasValue(true)
                {
                    // No-op.
                }
 
 
                virtual ~CacheEntry()
                {
                    // No-op.
                }
 
                CacheEntry& operator=(const CacheEntry& other)
                {
                    if (this != &other)
                    {
                        key = other.key;
                        val = other.val;
                        hasValue = other.hasValue;
                    }
 
                    return *this;
                }
 
                const K& GetKey() const
                {
                    return key;
                }
 
                const V& GetValue() const
                {
                    return val;
                }
 
                bool HasValue() const
                {
                    return hasValue;
                }
 
            protected:
                K key;
 
                V val;
 
                bool hasValue;
            };
        }
    }
}
 
#endif //_IGNITE_THIN_CACHE_CACHE_ENTRY