@langchain/community/dist/structured_query/chroma.js

Third-party integrations for LangChain.js

import { BasicTranslator, Comparators, Operators, } from "@langchain/core/structured_query";
/**
 * Specialized translator for the Chroma vector database. It extends the
 * BasicTranslator class and translates internal query language elements
 * to valid filters. The class defines a subset of allowed logical
 * operators and comparators that can be used in the translation process.
 * @example
 * ```typescript
 * const chromaTranslator = new ChromaTranslator();
 * const selfQueryRetriever = new SelfQueryRetriever({
 *   llm: new ChatOpenAI(),
 *   vectorStore: new Chroma(),
 *   documentContents: "Brief summary of a movie",
 *   attributeInfo: [],
 *   structuredQueryTranslator: chromaTranslator,
 * });
 *
 * const relevantDocuments = await selfQueryRetriever.getRelevantDocuments(
 *   "Which movies are directed by Greta Gerwig?",
 * );
 * ```
 */
export class ChromaTranslator extends BasicTranslator {
    constructor() {
        super({
            allowedOperators: [Operators.and, Operators.or],
            allowedComparators: [
                Comparators.eq,
                Comparators.ne,
                Comparators.gt,
                Comparators.gte,
                Comparators.lt,
                Comparators.lte,
            ],
        });
    }
}