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BUGFIX: Support for elastic indices that don't return 'metadata' in '_source' (#13903)

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Description: Some Elastic indexes do not return a 'metadata' field in
'_source'. However, prior to this PR, the code assumed there always is a
'metadata' field. This PR adds support for cases where the field is
missing by adding it manually.

Issue: #13869
This commit is contained in:
Assaf Toledo 2023-11-27 22:52:57 +02:00 committed by GitHub
parent c156d0281a
commit ba62ff89cc
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libs/langchain/langchain/vectorstores/elasticsearch.py
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@ -798,6 +798,8 @@ class ElasticsearchStore(VectorStore):
"metadata", "metadata",
self.query_field, self.query_field,
]: ]:
if "metadata" not in hit["_source"]:
hit["_source"]["metadata"] = {}
hit["_source"]["metadata"][field] = hit["_source"][field] hit["_source"]["metadata"][field] = hit["_source"][field]
docs_and_scores.append( docs_and_scores.append(