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[Cloves Almeida <cjalmeida@xxxxxxxxx>]

About the improvements in XML, I'd like to propose a obj-to-vals (the 
list/dict format suitable for write/create osv methods) and vals-to-xml 
methods to osv.osv objects. The code developed by me with Dukai's help 
is below.

http://paste-it.net/public/s29b2ca/

The methods are somewhat documented. Basically it converts the an 
osv.osv object into a simple and human-friendly xml format.
For example, a res_partner object should give the expected output:
<customer>
<id>100</id>
<name>Cliente Teste</name>
<active>True</active>
<credit_limit>1000.00</credit_limit>
<address>
<item>
<id>150</id>
<name>José da Silva</name>
<type>default</type>
<stree1>Av. Goiás, 100, Ap 10</stree1>
<street2>Setor Central</street2>
<city>Goiânia</city>
<state_code>GO</state_code>
<country_code>BR</country_code>
<zip>74351018</zip>
<email>joao_silva@xxxxxxxxx</email>
<phone>62-5555-0000</phone>
<fax>62-5555-0001</fax>
<mobile>62-5555-0002</mobile>
</item>
</address>
</customer>


All you need is a very simple binding declaring what you want in your 
xml. For the example above, you should provide:

        binding = [
                'id',
                'name',
                'active',
                'credit_limit',
                ('address','address', [
                        'id',
                        'name',
                        'type',
                        'street',
                        'street2',
                        'city',
                        ('state_id', 'state_code', 'code'),
                        ('country_id', 'country_code', 'code'),
                        'zip',
                        'email',
                        'phone',
                        'fax',
                        'mobile'
                    ]
                )
        ]

By default, the serialization return a lxml object that can be further 
customized in code. The deserialization method accepts either a xml 
string or a lxml object so you can customize it prior to parsing.