Hi Karim,
it's difficult to comment as to me the problem is not quite clear.
But I try ;-)
You have a complex xml and need to read different data types. For each
type you have certain rules, how to extract them from the xml (docrules).
You could create a DocRule class, that do nothing but hold instructions
of how to read and write the xml for each data, e.g. xpathes. For each
data type you create an instance of that class.
Then, in your main xml Reader class you define a method, that accepts a
doc rule instance as argument.
doc_rule_1 = DocRule("some_pattern")
doc_rule_2 = DocRule("another_pattern")
class Reader(object):
def __init__(self, filename):
... # create the etree
def get_data_by_doc_rule(self, doc_rule):
... # search the tree based on the doc_rule
... # you can use any type here if it has the correct mehtods
In your "get_data_by_doc_rule" method you can use any type for the
doc_rule, that has corresponding attributes and methods ("duck typing").
So you have a lot of flexibility of how to create your doc_rules.
Is that what you're looking for?
Jan
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