Package dev.langchain4j.store.embedding.oracle

Class EmbeddingTable

java.lang.Object

dev.langchain4j.store.embedding.oracle.EmbeddingTable

public final class EmbeddingTable
extends Object

Represents a database table where embeddings, text, and metadata are stored. The columns of this table are listed below.

Table Columns

Name	Type	Description
id	VARCHAR(36)	Primary key. Used to store UUID strings which are generated by OracleEmbeddingStore.add(Embedding), OracleEmbeddingStore.add(Embedding, TextSegment), OracleEmbeddingStore.addAll(List), and OracleEmbeddingStore.add(Embedding, TextSegment)
embedding	VECTOR(*, FLOAT32)	Stores the Embedding.vector() passed to OracleEmbeddingStore.add(Embedding), OracleEmbeddingStore.add(Embedding, TextSegment), OracleEmbeddingStore.addAll(List), and OracleEmbeddingStore.add(Embedding, TextSegment). Never stores NULL.
text	CLOB	Stores the TextSegment.text() passed to OracleEmbeddingStore.add(Embedding, TextSegment) and OracleEmbeddingStore.addAll(List, List). Stores NULL when OracleEmbeddingStore.add(Embedding) and OracleEmbeddingStore.addAll(List) are called.
metadata	JSON	Stores the TextSegment.metadata() passed to OracleEmbeddingStore.add(Embedding, TextSegment) and OracleEmbeddingStore.addAll(List, List). Stores NULL when OracleEmbeddingStore.add(Embedding) and OracleEmbeddingStore.addAll(List) are called.

The column names listed above are used by default, but alternative names may be configured using EmbeddingTable.Builder methods.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EmbeddingTable.Builder	A builder that configures and builds an EmbeddingTable.

Method Summary

Modifier and Type	Method	Description
static EmbeddingTable.Builder	builder()	Returns a builder that configures a new EmbeddingTable.
String	embeddingColumn()	Returns the name of this table's embedding column.
String	idColumn()	Returns the name of this table's ID column.
String	metadataColumn()	Returns the name of this table's metadata column.
String	name()	Returns the name of this table.
String	textColumn()	Returns the name of this table's text column.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

name

public String name()

Returns the name of this table.

Returns:

The name of this table. Not null.

idColumn

public String idColumn()

Returns the name of this table's ID column.

Returns:

The name of this table's ID column. Not null.

embeddingColumn

public String embeddingColumn()

Returns the name of this table's embedding column.

Returns:

The name of this table's embedding column. Not null.

textColumn

public String textColumn()

Returns the name of this table's text column.

Returns:

The name of this table's text column. Not null.

metadataColumn

public String metadataColumn()

Returns the name of this table's metadata column.

Returns:

The name of this table's text column. Not null.

builder

public static EmbeddingTable.Builder builder()

Returns a builder that configures a new EmbeddingTable.

Returns:

An EmbeddingTable builder. Not null.