Hello All,
I want to build some classes by optimizing their design.
But I want to keep quite 'simples'. I have a XML document
which represents let's say some rules (id, description, value).
My first idea is to create an *docrules* class which holds my document.
This class will use 2 other instances from 2 respectives classes
reader and writer. The main method of reader is get().
The main method of writer is write(). To resume I have:
------------------------------
-----------------------
- docrules
----------------------------------- reader -
------------------------------
-----------------------
- filename
- - file -
-
----------------------------
-----------------------
-
- - get() -
-
------- -----------------------
------------------------------ -
-
- ------------------------
------------------------------- writer -
------------------------
- file -
------------------------
- write() -
------------------------
The *docrules* will do the parsing (*xml.etree* very effective)
and create the reader and the writer instance.
I want to create 2 others classes (or more) more specific which have
more the knowledge about the XML documents structures.
*SpecificRuleReader*, *SpecificRuleWriter* which are deriving resp.
from Reader and Writer which hold resp. *getSpecificRules*() (use of
get('/tag1/tag2/tag3/specificTagRules') and a* writeSpecificRules*():
-----------------------------
---------------------------------
reader writer
-----------------------------
---------------------------------
^ ^
| |
-------------------------------
-----------------------------------
*SpecificRuleReader* *SpecificRulesWriter*
-------------------------------
-----------------------------------
*getSpecificRules*() *writeSpecificRules()*
--------------------------------
--------------------------------------
My purpose is to separate as far as possible XML representation from
core classes. I will have certainly more SpecificrulesReader/Writer
classes becauses the document is huge and several discipline rules
will be adressed. I don't want necessarily have 2 big classes which
know everything about XML document because I will have too many
methods.
So, for if anybody has this kind of experience or any design pattern idea,
I will be enchanté.
Regards
Karim
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