def get_link(link_string, source, registry):
'''
Create a Link from a string rendering.
Also note that the link_id is set but is not yet registered as resource.
link_string -- A string rendering of a link.
source -- The source entity.
registry -- Registry used for this call.
'''
tmp = link_string.find('<') + 1
target_id = link_string[tmp:link_string.rfind('>', tmp)].strip()
try:
link_id = find_in_string(link_string, 'self')
except AttributeError:
link_id = None
try:
tmp_category = find_in_string(link_string, 'category')
except AttributeError:
raise AttributeError('Could not determine the Category of the Link.')
tempus = tmp_category.split('#')
link_category = get_category(
tempus[1].strip() + ';scheme="' + tempus[0].strip() + '#"',
registry.get_categories())
attributes = {}
attr_begin = link_string.find('category="') + 12 + len(tmp_category)
attributes_str = link_string[attr_begin:]
for attribute in attributes_str.split(';'):
tmp = attribute.strip().split('=')
if len(tmp) == 2:
attributes[tmp[0].strip()] = tmp[1].rstrip('"').lstrip('"').strip()
try:
if target_id.find(registry.get_hostname()) == 0:
target_id = target_id.replace(registry.get_hostname(), '')
target = registry.get_resource(target_id)
except KeyError:
raise AttributeError('The target for the link cannot be found: ' +
target_id)
link = Link(link_id, link_category, [], source, target)
link.attributes = attributes
return link
def get_link(link_string, source, registry):
'''
Create a Link from a string rendering.
Also note that the link_id is set but is not yet registered as resource.
link_string -- A string rendering of a link.
source -- The source entity.
registry -- Registry used for this call.
'''
tmp = link_string.find('<') + 1
target_id = link_string[tmp:link_string.rfind('>', tmp)].strip()
try:
link_id = find_in_string(link_string, 'self')
except AttributeError:
link_id = None
try:
tmp_category = find_in_string(link_string, 'category')
except AttributeError:
raise AttributeError('Could not determine the Category of the Link.')
tempus = tmp_category.split('#')
link_category = get_category(tempus[1].strip() + ';scheme="'
+ tempus[0].strip() + '#"',
registry.get_categories())
attributes = {}
attr_begin = link_string.find('category="') + 12 + len(tmp_category)
attributes_str = link_string[attr_begin:]
for attribute in attributes_str.split(';'):
tmp = attribute.strip().split('=')
if len(tmp) == 2:
attributes[tmp[0].strip()] = tmp[1].rstrip('"').lstrip('"').strip()
try:
if target_id.find(registry.get_hostname()) == 0:
target_id = target_id.replace(registry.get_hostname(), '')
target = registry.get_resource(target_id)
except KeyError:
raise AttributeError('The target for the link cannot be found: '
+ target_id)
link = Link(link_id, link_category, [], source, target)
link.attributes = attributes
return link
def setUp(self):
self.kind = Kind('http://example.com/foo#', 'bar')
self.link_kind = Kind('http://example.com/foo#', 'link')
self.mixin = Mixin('http://example.com/foo#', 'mixin')
target = Resource('/foo/target', self.kind, [], [])
source = Resource('/foo/src', self.kind, [self.mixin], [])
source.attributes = {'foo': 'bar'}
link = Link('/link/foo', self.link_kind, [], source, target)
link.attributes = {'foo': 'bar'}
source.links = [link]
self.resources = [source, target, link]
for item in self.resources:
self.registry.add_resource(item.identifier, item)
self.registry.set_backend(self.kind, KindBackend())
self.registry.set_backend(self.mixin, MixinBackend())
def setUp(self):
self.kind = Kind('http://example.com/foo#', 'bar')
self.link_kind = Kind('http://example.com/foo#', 'link')
self.mixin = Mixin('http://example.com/foo#', 'mixin')
target = Resource('/foo/target', self.kind, [], [])
source = Resource('/foo/src', self.kind, [self.mixin], [])
source.attributes = {'foo': 'bar'}
link = Link('/link/foo', self.link_kind, [], source, target)
link.attributes = {'foo': 'bar'}
source.links = [link]
self.resources = [source, target, link]
for item in self.resources:
self.registry.add_resource(item.identifier, item)
self.registry.set_backend(self.kind, KindBackend())
self.registry.set_backend(self.mixin, MixinBackend())
