def inject_context(self, entity, metadata=None):
"""
Args:
entity(object):
format {'data': 'Entity tag as <str>',
'key': 'entity proper name as <str>',
'confidence': <float>'
}
metadata(object): dict, arbitrary metadata about the entity being
added
"""
metadata = metadata or {}
try:
if len(self.frame_stack) > 0:
top_frame = self.frame_stack[0]
else:
top_frame = None
if top_frame and top_frame[0].metadata_matches(metadata):
top_frame[0].merge_context(entity, metadata)
else:
frame = ContextManagerFrame(entities=[entity],
metadata=metadata.copy())
self.frame_stack.insert(0, (frame, time.time()))
except (IndexError, KeyError):
pass
def testMergeContext(self):
frame1 = ContextManagerFrame(entities=['foo'],
metadata={
'domain': 'music',
'foo': 'test'
})
self.assertFalse(frame1.metadata_matches({'bar': 'test'}),
"Should not match before merging context")
frame1.merge_context('bar', {'domain': 'music', 'bar': 'test'})
self.assertTrue(frame1.metadata_matches({'domain': 'music'}),
"Should continue to match subset of metadata")
self.assertTrue(frame1.metadata_matches({'bar': 'test'}),
"Should match after merging context")
def testMetadataMatches(self):
frame1 = ContextManagerFrame(entities=['foo'],
metadata={
'domain': 'music',
'foo': 'test'
})
self.assertTrue(frame1.metadata_matches({'domain': 'music'}),
"Should match subset of metadata")
self.assertFalse(frame1.metadata_matches({'domain': 'weather'}),
"Should not match metadata value mismatch")
self.assertTrue(
frame1.metadata_matches({
'domain': 'music',
'foo': 'test'
}), "Should match exact metadata")
self.assertFalse(
frame1.metadata_matches({
'domain': 'music',
'foo': 'test',
'bar': 'test'
}), "Should not match superset of metadata")