Package dev.langchain4j.store.embedding.qdrant

Class QdrantEmbeddingStore

java.lang.Object

dev.langchain4j.store.embedding.qdrant.QdrantEmbeddingStore

All Implemented Interfaces:

EmbeddingStore<TextSegment>

public class QdrantEmbeddingStore
extends Object
implements EmbeddingStore<TextSegment>

Represents a Qdrant collection as an embedding store. With support for storing Metadata.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	QdrantEmbeddingStore.Builder

Constructor Summary

Constructors

Constructor	Description
QdrantEmbeddingStore(io.qdrant.client.QdrantClient client, String collectionName, String payloadTextKey)
QdrantEmbeddingStore(String collectionName, String host, int port, boolean useTls, String payloadTextKey, String apiKey)

Method Summary

Modifier and Type	Method	Description
String	add(Embedding embedding)	Adds a given embedding to the store.
String	add(Embedding embedding, TextSegment textSegment)	Adds a given embedding and the corresponding content that has been embedded to the store.
void	add(String id, Embedding embedding)	Adds a given embedding to the store.
List<String>	addAll(List<Embedding> embeddings)	Adds multiple embeddings to the store.
void	addAll(List<String> ids, List<Embedding> embeddings, List<TextSegment> textSegments)	Adds multiple embeddings and their corresponding contents that have been embedded to the store.
static QdrantEmbeddingStore.Builder	builder()
void	clearStore()	Deletes all points from the Qdrant collection.
void	close()	Closes the underlying GRPC client.
void	remove(String id)	Removes a single embedding from the store by ID.
void	removeAll()	Removes all embeddings from the store.
void	removeAll(Filter filter)	Removes all embeddings that match the specified Filter from the store.
void	removeAll(Collection<String> ids)	Removes all embeddings that match the specified IDs from the store.
EmbeddingSearchResult<TextSegment>	search(EmbeddingSearchRequest request)	Searches for the most similar (closest in the embedding space) Embeddings.

Methods inherited from class java.lang.Object

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

Methods inherited from interface dev.langchain4j.store.embedding.EmbeddingStore

addAll, generateIds

Constructor Details

QdrantEmbeddingStore

public QdrantEmbeddingStore(String collectionName,
 String host,
 int port,
 boolean useTls,
 String payloadTextKey,
 @Nullable
 String apiKey)

Parameters:

collectionName - The name of the Qdrant collection.

host - The host of the Qdrant instance.

port - The GRPC port of the Qdrant instance.

useTls - Whether to use TLS(HTTPS).

payloadTextKey - The field name of the text segment in the Qdrant payload.

apiKey - The Qdrant API key to authenticate with.

QdrantEmbeddingStore

public QdrantEmbeddingStore(io.qdrant.client.QdrantClient client,
 String collectionName,
 String payloadTextKey)

Parameters:

client - A Qdrant client instance.

collectionName - The name of the Qdrant collection.

payloadTextKey - The field name of the text segment in the Qdrant payload.

Method Details

add

public String add(Embedding embedding)

Description copied from interface: EmbeddingStore

Adds a given embedding to the store.

Specified by:

add in interface EmbeddingStore<TextSegment>

Parameters:

embedding - The embedding to be added to the store.

Returns:

The auto-generated ID associated with the added embedding.

add

public void add(String id,
 Embedding embedding)

Description copied from interface: EmbeddingStore

Adds a given embedding to the store.

Specified by:

add in interface EmbeddingStore<TextSegment>

Parameters:

id - The unique identifier for the embedding to be added.

embedding - The embedding to be added to the store.

add

public String add(Embedding embedding,
 TextSegment textSegment)

Description copied from interface: EmbeddingStore

Adds a given embedding and the corresponding content that has been embedded to the store.

Specified by:

add in interface EmbeddingStore<TextSegment>

Parameters:

embedding - The embedding to be added to the store.

textSegment - Original content that was embedded.

Returns:

The auto-generated ID associated with the added embedding.

addAll

public List<String> addAll(List<Embedding> embeddings)

Description copied from interface: EmbeddingStore

Adds multiple embeddings to the store.

Specified by:

addAll in interface EmbeddingStore<TextSegment>

Parameters:

embeddings - A list of embeddings to be added to the store.

Returns:

A list of auto-generated IDs associated with the added embeddings.

addAll

public void addAll(List<String> ids,
 List<Embedding> embeddings,
 List<TextSegment> textSegments)
            throws RuntimeException

Description copied from interface: EmbeddingStore

Adds multiple embeddings and their corresponding contents that have been embedded to the store.

Specified by:

addAll in interface EmbeddingStore<TextSegment>

Parameters:

ids - A list of IDs associated with the added embeddings.

embeddings - A list of embeddings to be added to the store.

textSegments - A list of original contents that were embedded.

Throws:

RuntimeException

remove

public void remove(String id)

Description copied from interface: EmbeddingStore

Removes a single embedding from the store by ID.

Specified by:

remove in interface EmbeddingStore<TextSegment>

Parameters:

id - The unique ID of the embedding to be removed.

removeAll

public void removeAll(Collection<String> ids)

Description copied from interface: EmbeddingStore

Removes all embeddings that match the specified IDs from the store.

Specified by:

removeAll in interface EmbeddingStore<TextSegment>

Parameters:

ids - A collection of unique IDs of the embeddings to be removed.

removeAll

public void removeAll(Filter filter)

Description copied from interface: EmbeddingStore

Removes all embeddings that match the specified Filter from the store.

Specified by:

removeAll in interface EmbeddingStore<TextSegment>

Parameters:

filter - The filter to be applied to the Metadata of the TextSegment during removal. Only embeddings whose TextSegment's Metadata match the Filter will be removed.

removeAll

public void removeAll()

Description copied from interface: EmbeddingStore

Removes all embeddings from the store.

Specified by:

removeAll in interface EmbeddingStore<TextSegment>

search

public EmbeddingSearchResult<TextSegment> search(EmbeddingSearchRequest request)

Description copied from interface: EmbeddingStore

Searches for the most similar (closest in the embedding space) Embeddings.
All search criteria are defined inside the EmbeddingSearchRequest.
EmbeddingSearchRequest.filter() can be used to filter by various metadata entries (e.g., user/memory ID). Please note that not all EmbeddingStore implementations support Filtering.

Specified by:

search in interface EmbeddingStore<TextSegment>

Parameters:

request - A request to search in an EmbeddingStore. Contains all search criteria.

Returns:

An EmbeddingSearchResult containing all found Embeddings.

clearStore

public void clearStore()

Deletes all points from the Qdrant collection.

close

public void close()

Closes the underlying GRPC client.

builder

public static QdrantEmbeddingStore.Builder builder()