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76d5142bb8
* Rework Document serialisation * Make Document backward compatible * Fix InMemoryDocumentStore filters * Fix InMemoryDocumentStore.bm25_retrieval * Add release notes * Fix pylint failures * Enhance Document kwargs handling and docstrings * cosmetics --------- Co-authored-by: Massimiliano Pippi <mpippi@gmail.com>
21 lines
1.1 KiB
YAML
21 lines
1.1 KiB
YAML
---
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prelude: >
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The `Document` serialisation has been changed quite a bit, this will make it easier to implement
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new Document Stores.
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The most notable change is that the `Document.flatten()` method has been removed.
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`Document.to_dict()` now has a `flatten` parameter, that defaults to `True` for backward compatibility.
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It will flatten metadata keys at the same level of other `Document` fields when converting to `dict`.
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`to_json` and `from_json` have been removed, as `to_dict` and `from_dict` already handle serialisation
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of `dataframe` and `blob` fields.
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Now `metadata` must only contain primitives that can be serialised to JSON with no custom encoders.
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If any Document Store needs custom serialisation they can implement their own logic.
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`Document` has also been made backward compatible so that it can be created using dictionaries
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structured as the legacy 1.x `Document`. The legacy fields will be converted automatically to
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their new counterparts, or ignored if there's none.
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preview:
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- |
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Refactor Document serialisation and make it backward compatible with Haystack 1.x
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