Oracle Embedding Store

Overview

This module adds support for the Oracle embedding store.

Maven Coordinates

In addition to the Helidon integration with LangChain4j core dependencies, you must add the following:

pom.xml

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

OracleEmbeddingStore

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

application.yaml

# Oracle UCP datasource
data:
  sources:
    sql:
      - name: "foo-bar-data-source"1
        provider.ucp:
          username: "vector"
          password: "vector"
          url: "jdbc:oracle:thin:@localhost:1521/freepdb1"
          connection-factory-class-name: oracle.jdbc.pool.OracleDataSource

langchain4j:
  providers:
    oracle:
      # Configuration of a datasource default for all oracle embedding stores
      data-source: "foo-bar-data-source"

  embedding-stores:
    foo-bar-oracle-db-embedding-store:
      provider: oracle
      embedding-table:
        name: "foo-bar-embeddings"

Configured with io.helidon.data.sql.datasource:helidon-data-sql-datasource-ucp see Helidon Data Repository for more info

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

Configuration options

Key	Type	Description
`data-source`	string	The name of Helidon service containing a data source for connecting to the Oracle embedding store. If not present, the default unnamed service is used.
`embedding-table`	OracleEmbeddingTable	Root configuration key for `OracleEmbeddingTable` configuration. Contains properties of the embedding table associated with the Oracle embedding store.
`enabled`	boolean	If set to `true`, Oracle embedding store will be enabled.
`exact-search`	boolean	Specifies whether exact matching is used in searches.
`vector-index-create-option`	string	The vector index creation option, which defines behavior when creating the vector index. Options are `CREATE_NONE` (default), `CREATE_IF_NOT_EXISTS`, `CREATE_OR_REPLACE`.

OracleEmbeddingTable

Configuration options

Key	Type	Description
`create-option`	string	Defines the behavior when creating the embedding table. Options are: `CREATE_NONE` (default), `CREATE_IF_NOT_EXISTS`, `CREATE_OR_REPLACE`.
`embedding-column`	string	Name of the embedding column in the embedding table. Default is "embedding".
`id-column`	string	Name of the ID column in the embedding table. Default is "id".
`metadata-column`	string	Name of the metadata column in the embedding table. default is "metadata".
`name`	string	Required. Name of the embedding table.
`text-column`	string	Name of the text column in the embedding table. Default is "text".

Additional Information

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Cohere

LangChain4j Cohere

Coherence Embedding Store

LangChain4J Coherence