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Fix for Issue #543 (Namespace unbind required) including trie and other modification #1094

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Fix for Issue #543 (Namespace unbind required) including trie and other modification #1094

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b9446fa
issue543
abhivickyvyas May 28, 2020
616819d
trie_and_other_modification
abhivickyvyas May 29, 2020
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6 changes: 6 additions & 0 deletions rdflib/namespace.py
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Original file line number Diff line number Diff line change
Expand Up @@ -694,6 +694,12 @@ def compute_qname_strict(self, uri, generate=True):

return self.__cache_strict[uri]

def unbind(self, prefix):
for ns in self.namespaces():
if (ns[0] == prefix):
del self.__trie[str(ns[1])]
self.store.unbind(prefix)

def bind(self, prefix, namespace, override=True, replace=False):
"""bind a given namespace to the prefix

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5 changes: 5 additions & 0 deletions rdflib/plugins/memory.py
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Expand Up @@ -156,6 +156,11 @@ def bind(self, prefix, namespace):
self.__prefix[namespace] = prefix
self.__namespace[prefix] = namespace

def unbind(self, prefix):
temp_prefix = {x: y for x, y in self.__prefix.items() if y != prefix}
self.__prefix = temp_prefix
del self.__namespace[prefix]

def namespace(self, prefix):
return self.__namespace.get(prefix, None)

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