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Object Serialization in C Using the Factory Pattern
In C , serialization involves converting an object's state into a stream for storage or transmission and later reconstructing the object from the stream. A common approach is using class IDs for serialization and deserialization, but this can be considered an antipattern.
Boost Serialization
One alternative is to use a library like Boost Serialization. This library provides a comprehensive framework for object serialization, handling the low-level details and offering a user-friendly interface.
Factory Pattern with Registered Classes
Another approach is to use the factory pattern with registered classes. Here's how it works:
Code Example
The following C code demonstrates an implementation of the object factory:
<code class="cpp">template<typename K, typename T> class Factory { typedef T *(*CreateObjectFunc)(); std::map<K, CreateObjectFunc> mObjectCreator; template<typename S> static T* createObject(){ return new S(); } public: template<typename S> void registerClass(K id){ mObjectCreator.insert( std::make_pair<K,CreateObjectFunc>(id, &createObject<S> ) ); } bool hasClass(K id){ return mObjectCreator.find(id) != mObjectCreator.end(); } T* createObject(K id){ return ((*mObjectCreator[id])(); } };</code>
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