Coherence Embedding Store

Overview

This module adds support for the Coherence embedding store.

Maven Coordinates

In addition to the Helidon integration with LangChain4J core dependencies, you must add the following:

<dependency>
    <groupId>io.helidon.integrations.langchain4j.providers</groupId>
    <artifactId>helidon-integrations-langchain4j-providers-coherence</artifactId>
</dependency>

Components

CoherenceEmbeddingStore

To automatically create and add CoherenceEmbeddingStore to the service registry add the following lines to application.yaml:

langchain4j:
  providers:
    coherence:
      session: "session"

  embedding-stores:
    coherence-embedding-store:
      provider: coherence
      name: "namedMap"
      normalize-embeddings: false
      index: "hnsw"
      dimension: 768
      embedding-model: beanName

If enabled is set to false, the configuration is ignored, and the component is not created.

Full list of configuration properties:

Key	Type	Description
embedding-model	string	Allows to configure embedding model by specifying named bean using embeddingModel.service-registry.named: beanName.
dimension	integer	The number of dimensions in the embeddings that will be stored in vector store.
enabled	boolean	If set to true, Coherence embedding store will be enabled.
index	string	Specifies vector index type use to create a vector index used to query embeddings. Only hnsw is supported.
name	string	Specifies name of the Coherence com.tangosol.net.NamedMap use to store embeddings.
normalize-embeddings	boolean	A flag that when true, forces normalization of embeddings on adding and searching.
session	string	The name of the com.tangosol.net.Session use to obtain the com.tangosol.net.NamedMap as specified with name.

Additional Information

• LangChain4J Integration
• langChain4J Coherence Embedding Store Documentation