langchain.js
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    Class QdrantTranslator<T>

    A class that translates or converts StructuredQuery to equivalent Qdrant filters.

    const selfQueryRetriever = new SelfQueryRetriever({
      llm: new ChatOpenAI({ model: "gpt-4o-mini" }),
      vectorStore: new QdrantVectorStore(...),
      documentContents: "Brief summary of a movie",
      attributeInfo: [],
      structuredQueryTranslator: new QdrantTranslator(),
    });

    const relevantDocuments = await selfQueryRetriever.getRelevantDocuments(
      "Which movies are rated higher than 8.5?",
    );

    Type Parameters

    Hierarchy (View Summary)

    Index

    Constructors

    constructor

    Properties

    allowedComparators allowedOperators VisitComparisonOutput VisitOperationOutput

    Methods

    formatFunction mergeFilters visitComparison visitOperation visitStructuredQuery

    Constructors

    Properties

    allowedComparators: Comparator[] = ...
    allowedOperators: Operator[] = ...
    VisitComparisonOutput: {}
    VisitOperationOutput: {}

    Methods

    • Returns string

    • Merges two filters into one. If both filters are empty, returns undefined. If one filter is empty or the merge type is 'replace', returns the other filter. If the merge type is 'and' or 'or', returns a new filter with the merged results. Throws an error for unknown merge types.

      Parameters

      • defaultFilter: undefined | {}

        The default filter to merge.

      • generatedFilter: undefined | {}

        The generated filter to merge.

      • mergeType: string = "and"

        The type of merge to perform. Can be 'and', 'or', or 'replace'. Defaults to 'and'.

      • forceDefaultFilter: boolean = false

        If true, the default filter is always returned if the generated filter is empty. Defaults to false.

      Returns undefined | {}

      A merged QdrantFilter, or undefined if both filters are empty.

    • Visits a comparison and returns a QdrantCondition. The value is casted to the correct type. The attribute is prefixed with "metadata.", since metadata is nested in the Qdrant payload.

      Parameters

      • comparison: Comparison

        The comparison to visit.

      Returns {}

      A QdrantCondition.

    • Visits an operation and returns a QdrantFilter.

      Parameters

      • operation: Operation

        The operation to visit.

      Returns {}

      A QdrantFilter.

    • Visits a structured query and returns a VisitStructuredQueryOutput. If the query has a filter, it is visited.

      Parameters

      • query: StructuredQuery

        The structured query to visit.

      Returns unknown

      An instance of VisitStructuredQueryOutput.

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