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import xml.etree.ElementTree as et
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from django.db import models
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ATTR_KEY = 'key'
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ATTR_KEY_TYPE = 'type'
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ATTR_LOCAL_ID = 'local-id'
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class GlobalId(models.Model):
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class Meta:
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app_label = 'boards'
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def __init__(self, *args, **kwargs):
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models.Model.__init__(self, *args, **kwargs)
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if 'key' in kwargs and 'key_type' in kwargs and 'local_id' in kwargs:
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self.key = kwargs['key']
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self.key_type = kwargs['key_type']
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self.local_id = kwargs['local_id']
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key = models.TextField()
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key_type = models.TextField()
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local_id = models.IntegerField()
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def __str__(self):
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return '%s | %s | %d' % (self.key_type, self.key, self.local_id)
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def to_xml_element(self, element: et.Element):
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"""
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Exports global id to an XML element.
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"""
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element.set(ATTR_KEY, self.key)
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element.set(ATTR_KEY_TYPE, self.key_type)
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element.set(ATTR_LOCAL_ID, str(self.local_id))
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@staticmethod
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def from_xml_element(element: et.Element, existing=False):
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"""
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Parses XML id tag and gets global id from it.
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Arguments:
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element -- the XML 'id' element
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existing -- if this is False, a new instance of GlobalId will be
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created. Otherwise, we will search for an existing GlobalId instance
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and throw DoesNotExist if there isn't one.
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"""
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if existing:
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return GlobalId.objects.get(key=element.get(ATTR_KEY),
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key_type=element.get(ATTR_KEY_TYPE),
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local_id=int(element.get(
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ATTR_LOCAL_ID)))
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else:
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return GlobalId(key=element.get(ATTR_KEY),
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key_type=element.get(ATTR_KEY_TYPE),
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local_id=int(element.get(ATTR_LOCAL_ID)))
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class Signature(models.Model):
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class Meta:
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app_label = 'boards'
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key_type = models.TextField()
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key = models.TextField()
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signature = models.TextField()
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