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Ensure that ActiveContextCache only enters a given combination of (activeCtx, localCtx) once in its internal FIFO #44

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Ensure that ActiveContextCache only enters a given combination of (activeCtx, localCtx) once in its internal FIFO #44

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7 changes: 6 additions & 1 deletion lib/pyld/jsonld.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5089,7 +5089,12 @@ def set(self, active_ctx, local_ctx, result):
del self.cache[entry['activeCtx']][entry['localCtx']]
key1 = json.dumps(active_ctx)
key2 = json.dumps(local_ctx)
self.order.append({'activeCtx': key1, 'localCtx': key2})
# if we haven't seen this key combination before, add it to the deque.
# (if it already exists -- i.e., if we're overwriting an existing
# value -- then it's already contained in the deque, and we shouldn't
# do anything)
if key1 not in self.cache or key2 not in self.cache[key1]:
self.order.append({'activeCtx': key1, 'localCtx': key2})
self.cache.setdefault(key1, {})[key2] = json.loads(json.dumps(result))


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