Fwd: [Biococoa-dev] Sequence Structure

[Philipp Seibel]

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> Am 11.07.2005 um 01:54 schrieb Charles Parnot:
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>>>> I don't understand the BCSymbolAnnotation part of the picture.  
>>>> Is this additional or replacing some of the current classes?
>>>>
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>>>>
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>>> This is to replace BCSymbol and BCSymbolSet classes, following  
>>> the Flyweight-Pattern. It's hard to explain, perhaps you look at  
>>> the links i sent.
>>>
>>>
>>
>> It seems that BCSymbolSet are more flexible that  
>> BCSymbolAnnotation, as there is only one BCSymbolAnnotation per  
>> sequence type, based on the factory method you show in your graph.  
>> Is that right?
>>
>
> :-) i don't think so, because the BCSymbolAnnotation provides as  
> much functionality as the current BCSymbol and BCSymbolSet classes  
> and allows the user to add more info in the property dictionary for  
> symbols. Espacially this isn't possible with the BCSymbol class,  
> where currently all properties get accessor methods.
> The flyweight pattern is just a suggestion, because it's build  
> exactly for our problem.
>
> cheers,
>
> Phil
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