Support vector search on Cosmos DB #33991
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@roji I added a JSON fragment expression, as we discussed. |
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Looks pretty good! See mainly nits.
Probably a good idea for @AndriySvyryd to take a look for the metadata/model and CosmosClientWrapper stuff.
src/EFCore.Cosmos/Extensions/CosmosPropertyBuilderExtensions.cs
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@Pilchie What is the new guidance here given that the latest SDK has made all the code to configure vector indexes and embeddings internal? |
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This has been updated to the latest SDK and the container configuration has been made to throw. Verified that all the tests pass if the container has already been created. |
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@roji This is now constrained. |
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LGTM.
As discussed offline, we really should deliver this feature with support for arrays as well (e.g. float[]). Maybe the best way forward is to build in support for it in this PR for the type mapping side and have failing tests for the query translation, which I'd work on fixing after rc1 (given feature work stops in a few days).
BTW at what level is Half (float16) not supported? Is the Cosmos SDK the blocking one here? If the intention is for it to be supported soon, it may be worth just implementing it on our side and letting Cosmos/the SDK fail, since it'll be harder to add it in later.
src/EFCore.Cosmos/Extensions/CosmosPropertyBuilderExtensions.cs
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| /// <param name="property">The property.</param> | ||
| /// <param name="vectorType">The type of vector stored in the property.</param> | ||
| [Experimental(EFDiagnostics.CosmosVectorSearchExperimental)] | ||
| public static void SetVectorType(this IMutableProperty property, CosmosVectorType? vectorType) |
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BTW does Cosmos actually support nullable vector properties? Might be worth checking
| @@ -126,12 +126,18 @@ | |||
| <data name="BadDictionaryType" xml:space="preserve"> | |||
| <value>The type '{givenType}' cannot be mapped as a dictionary because it does not implement '{dictionaryType}'.</value> | |||
| </data> | |||
| <data name="BadVectorDataType" xml:space="preserve"> | |||
| <value>The type '{clrType}' is being used as a vector, but the vector data type cannot be inferred. Only 'ReadOnlyMemory<byte>, ReadOnlyMemory<sbyte>, and ReadOnlyMemory<float> are supported.</value> | |||
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As discussed offline, arrays should also work.
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Fixes #33783
This PR introduces:
IsVector()to configure a property to be configured as a vector (embedding) in the document.HasIndex().ForVectors()to configure a vector index over a vector property.VectorDistance()which translates to the CosmosVectorDistancefunctionKnown issues: