Examples¶

XML to JSON

XML to JSON ¶

Make class for reading document (documents.py)

from composite import Document, fields


class User(Document):
    id = fields.Field(name='id', type=int)
    sign = fields.Field(name='sign', type=str)

    def get_user_name(self):
        if self.get_attributes():
            return '%s %s' % (self.attributes.first_name,
                              self.attributes.last_name)
        return self.id

    def __str__(self):
        return '%s' % self.attributes.first_name

    class Attributes:
        first_name = fields.AttributeField(name='first_name', type=str)
        last_name = fields.AttributeField(name='last_name', type=str)
        age = fields.AttributeField(name='age', type=int)
        gender = fields.AttributeField(name='gender', type=str)
        phone = fields.AttributeField(name='phone', type=str)
        email = fields.AttributeField(name='email', type=str)

class Company(Document):
"""
Company document

:param str title: title
:param str address: address
:param str company_type: company type
:param User ceo: company CEO user profile
"""
title = Field('title', str)
address = Field('address', str)
company_type = Field('company_type', str)
ceo = Node('ceo', type=User)

def __str__(self):
    return self.ceo.get_user_name()

Implement XML document

<?xml version="1.0" encoding="utf-8"?>
<Company>
    <ceo first_name="Alexander" last_name="Pepyako" age="23"
          gender="male" phone="+79110010203" email="com@alexander.pepyako">
        <id>1</id>
        <sign>Pepyako inc.</sign>
    </ceo>
    <title>Pepyako industries</title>
    <address>Third Vydrokushskaya street, 7 building</address>
    <company_type>GHMb</company_type>
</Company>

Read XML document with help of implemented classes

>>> from documents import Company
>>> from composite.builders import LXMLDocumentBuilder
>>> from lxml import etree
>>> xml_document = etree.fromstring(open('company.xml', 'rb').read())
>>> company = Company.parse(LXMLDocumentBuilder, xml_document)
>>> company
<Company: Alexander Pepyako>
>>> company.ceo.get_user_name()
'Alexander Pepyako'

Convert company to JSON

>>> from composite.builders import PythonDocumentBuilder
>>> import json
>>> company_dict = company.build(PythonDocumentBuilder, company)
>>> company_dict
{'address': 'Third Vydrokushskaya street, 7 building',
 'ceo': {'_attributes': {'age': 23,
   'email': 'com@alexander.pepyako',
   'first_name': 'Alexander',
   'gender': 'male',
   'last_name': 'Pepyako',
   'phone': '+79110010203'},
  'id': 1,
  'sign': 'Pepyako inc.'},
 'company_type': 'GHMb',
 'title': 'Pepyako industries'}
>>> json.dumps(company_dict)
'{"ceo": {"_attributes": {"phone": "+79110010203", "first_name": "Alexander", "last_name": "Pepyako",
"gender": "male", "age": 23, "email": "com@alexander.pepyako"}, "id": 1,
"sign": "Pepyako inc."}, "title": "Pepyako industries",
"company_type": "GHMb", "address": "Third Vydrokushskaya street, 7 building"}'

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