Summary of entries of Methods for langchain-google-alloydb-pg.
langchain_google_alloydb_pg.engine._get_iam_principal_email
_get_iam_principal_email
(
credentials
:
google
.
auth
.
credentials
.
Credentials
)
-
> str
Get email address associated with current authenticated IAM principal.
See more: langchain_google_alloydb_pg.engine._get_iam_principal_email
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory
AlloyDBChatMessageHistory
(
key
:
object
,
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
history
:
langchain_google_alloydb_pg
.
async_chat_message_history
.
AsyncAlloyDBChatMessageHistory
,
)
AlloyDBChatMessageHistory constructor.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aadd_message
aadd_message
(
message
:
langchain_core
.
messages
.
base
.
BaseMessage
)
-
> None
Append the message to the record in AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aadd_message
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aadd_messages
aadd_messages
(
messages
:
typing
.
Sequence
[
langchain_core
.
messages
.
base
.
BaseMessage
],
)
-
> None
Append a list of messages to the record in AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aadd_messages
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aclear
aclear
()
-
> None
Clear session memory from AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.aclear
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.add_message
add_message
(
message
:
langchain_core
.
messages
.
base
.
BaseMessage
)
-
> None
Append the message to the record in AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.add_message
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.add_messages
add_messages
(
messages
:
typing
.
Sequence
[
langchain_core
.
messages
.
base
.
BaseMessage
],
)
-
> None
Append a list of messages to the record in AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.add_messages
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.clear
clear
()
-
> None
Clear session memory from AlloyDB.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.clear
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.create
create
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
session_id
:
str
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
)
-
> langchain_google_alloydb_pg
.
chat_message_history
.
AlloyDBChatMessageHistory
Create a new AlloyDBChatMessageHistory instance.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.create
langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.create_sync
create_sync
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
session_id
:
str
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
)
-
> langchain_google_alloydb_pg
.
chat_message_history
.
AlloyDBChatMessageHistory
Create a new AlloyDBChatMessageHistory instance.
See more: langchain_google_alloydb_pg.chat_message_history.AlloyDBChatMessageHistory.create_sync
langchain_google_alloydb_pg.engine.AlloyDBEngine
AlloyDBEngine
(
key
:
object
,
pool
:
sqlalchemy
.
ext
.
asyncio
.
engine
.
AsyncEngine
,
loop
:
typing
.
Optional
[
asyncio
.
events
.
AbstractEventLoop
],
thread
:
typing
.
Optional
[
threading
.
Thread
],
)
PGEngine constructor.
langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_chat_history_table
_ainit_chat_history_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
)
-
> None
Create an AlloyDB table to save chat history messages.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_chat_history_table
langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_checkpoint_table
_ainit_checkpoint_table
(
table_name
:
str
=
"checkpoints"
,
schema_name
:
str
=
"public"
)
-
> None
Create AlloyDB tables to save checkpoints.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_checkpoint_table
langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_document_table
_ainit_document_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"page_content"
,
metadata_columns
:
typing
.
Optional
[
list
[
langchain_postgres
.
v2
.
engine
.
Column
]]
=
None
,
metadata_json_column
:
str
=
"langchain_metadata"
,
store_metadata
:
bool
=
True
,
)
-
> None
Creates a table for storing LangChain documents.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine._ainit_document_table
langchain_google_alloydb_pg.engine.AlloyDBEngine._aload_table_schema
_aload_table_schema
(
table_name
:
str
,
schema_name
:
str
=
"public"
)
-
> sqlalchemy
.
sql
.
schema
.
Table
Load table schema from an existing table in a PgSQL database, potentially from a specific database schema.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine._aload_table_schema
langchain_google_alloydb_pg.engine.AlloyDBEngine._create
_create
(
project_id
:
str
,
region
:
str
,
cluster
:
str
,
instance
:
str
,
database
:
str
,
ip_type
:
typing
.
Union
[
str
,
google
.
cloud
.
alloydbconnector
.
enums
.
IPTypes
],
user
:
typing
.
Optional
[
str
]
=
None
,
password
:
typing
.
Optional
[
str
]
=
None
,
loop
:
typing
.
Optional
[
asyncio
.
events
.
AbstractEventLoop
]
=
None
,
thread
:
typing
.
Optional
[
threading
.
Thread
]
=
None
,
iam_account_email
:
typing
.
Optional
[
str
]
=
None
,
engine_args
:
typing
.
Mapping
=
{},
)
-
> langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
Create an AlloyDBEngine from an AlloyDB instance.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine._create
langchain_google_alloydb_pg.engine.AlloyDBEngine.afrom_instance
afrom_instance
(
project_id
:
str
,
region
:
str
,
cluster
:
str
,
instance
:
str
,
database
:
str
,
user
:
typing
.
Optional
[
str
]
=
None
,
password
:
typing
.
Optional
[
str
]
=
None
,
ip_type
:
typing
.
Union
[
str
,
google
.
cloud
.
alloydbconnector
.
enums
.
IPTypes
]
=
IPTypes
.
PUBLIC
,
iam_account_email
:
typing
.
Optional
[
str
]
=
None
,
engine_args
:
typing
.
Mapping
=
{},
)
-
> langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
Create an AlloyDBEngine from an AlloyDB instance.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.afrom_instance
langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_chat_history_table
ainit_chat_history_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
)
-
> None
Create an AlloyDB table to save chat history messages.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_chat_history_table
langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_checkpoint_table
ainit_checkpoint_table
(
table_name
:
str
=
"checkpoints"
,
schema_name
:
str
=
"public"
)
-
> None
Create an AlloyDB table to save checkpoint messages.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_checkpoint_table
langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_document_table
ainit_document_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"page_content"
,
metadata_columns
:
typing
.
Optional
[
list
[
langchain_postgres
.
v2
.
engine
.
Column
]]
=
None
,
metadata_json_column
:
str
=
"langchain_metadata"
,
store_metadata
:
bool
=
True
,
)
-
> None
Creates a table for storing LangChain documents.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.ainit_document_table
langchain_google_alloydb_pg.engine.AlloyDBEngine.from_connection_string
from_connection_string
(
url
:
str
|
sqlalchemy
.
engine
.
url
.
URL
,
**
kwargs
:
typing
.
Any
)
-
> langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
Create an AlloyDBEngine instance from arguments.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.from_connection_string
langchain_google_alloydb_pg.engine.AlloyDBEngine.from_engine_args
from_engine_args
(
url
:
str
|
sqlalchemy
.
engine
.
url
.
URL
,
**
kwargs
:
typing
.
Any
)
-
> langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
Create an AlloyDBEngine instance from arguments .
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.from_engine_args
langchain_google_alloydb_pg.engine.AlloyDBEngine.from_instance
from_instance
(
project_id
:
str
,
region
:
str
,
cluster
:
str
,
instance
:
str
,
database
:
str
,
user
:
typing
.
Optional
[
str
]
=
None
,
password
:
typing
.
Optional
[
str
]
=
None
,
ip_type
:
typing
.
Union
[
str
,
google
.
cloud
.
alloydbconnector
.
enums
.
IPTypes
]
=
IPTypes
.
PUBLIC
,
iam_account_email
:
typing
.
Optional
[
str
]
=
None
,
engine_args
:
typing
.
Mapping
=
{},
)
-
> langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
Create an AlloyDBEngine from an AlloyDB instance.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.from_instance
langchain_google_alloydb_pg.engine.AlloyDBEngine.init_chat_history_table
init_chat_history_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
)
-
> None
Create a Cloud SQL table to store chat history.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.init_chat_history_table
langchain_google_alloydb_pg.engine.AlloyDBEngine.init_checkpoint_table
init_checkpoint_table
(
table_name
:
str
=
"checkpoints"
,
schema_name
:
str
=
"public"
)
-
> None
Create Cloud SQL tables to store checkpoints.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.init_checkpoint_table
langchain_google_alloydb_pg.engine.AlloyDBEngine.init_document_table
init_document_table
(
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"page_content"
,
metadata_columns
:
typing
.
Optional
[
list
[
langchain_postgres
.
v2
.
engine
.
Column
]]
=
None
,
metadata_json_column
:
str
=
"langchain_metadata"
,
store_metadata
:
bool
=
True
,
)
-
> None
Creates a table for storing LangChain documents.
See more: langchain_google_alloydb_pg.engine.AlloyDBEngine.init_document_table
langchain_google_alloydb_pg.indexes.IVFIndex.index_options
index_options
()
-
> str
Set index query options for vector store initialization.
See more: langchain_google_alloydb_pg.indexes.IVFIndex.index_options
langchain_google_alloydb_pg.indexes.IVFQueryOptions.to_parameter
to_parameter
()
-
> list
[
str
]
Convert index attributes to list of configurations.
See more: langchain_google_alloydb_pg.indexes.IVFQueryOptions.to_parameter
langchain_google_alloydb_pg.indexes.IVFQueryOptions.to_string
to_string
()
-
> str
Convert index attributes to string.
See more: langchain_google_alloydb_pg.indexes.IVFQueryOptions.to_string
langchain_google_alloydb_pg.indexes.ScaNNIndex.index_options
index_options
()
-
> str
Set index query options for vector store initialization.
See more: langchain_google_alloydb_pg.indexes.ScaNNIndex.index_options
langchain_google_alloydb_pg.indexes.ScaNNQueryOptions.to_parameter
to_parameter
()
-
> list
[
str
]
Convert index attributes to list of configurations.
See more: langchain_google_alloydb_pg.indexes.ScaNNQueryOptions.to_parameter
langchain_google_alloydb_pg.indexes.ScaNNQueryOptions.to_string
to_string
()
-
> str
Convert index attributes to string.
See more: langchain_google_alloydb_pg.indexes.ScaNNQueryOptions.to_string
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver
AlloyDBDocumentSaver
(
key
:
object
,
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
saver
:
langchain_google_alloydb_pg
.
async_loader
.
AsyncAlloyDBDocumentSaver
,
)
AlloyDBDocumentSaver constructor.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.aadd_documents
aadd_documents
(
docs
:
list
[
langchain_core
.
documents
.
base
.
Document
])
-
> None
Save documents in the DocumentSaver table.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.aadd_documents
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.add_documents
add_documents
(
docs
:
list
[
langchain_core
.
documents
.
base
.
Document
])
-
> None
Save documents in the DocumentSaver table.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.add_documents
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.adelete
adelete
(
docs
:
list
[
langchain_core
.
documents
.
base
.
Document
])
-
> None
Delete all instances of a document from the DocumentSaver table by matching the entire Document object.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.adelete
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.create
create
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"page_content"
,
metadata_columns
:
list
[
str
]
=
[],
metadata_json_column
:
typing
.
Optional
[
str
]
=
"langchain_metadata"
,
)
-
> langchain_google_alloydb_pg
.
loader
.
AlloyDBDocumentSaver
Create an AlloyDBDocumentSaver instance.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.create
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.create_sync
create_sync
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"page_content"
,
metadata_columns
:
list
[
str
]
=
[],
metadata_json_column
:
str
=
"langchain_metadata"
,
)
-
> langchain_google_alloydb_pg
.
loader
.
AlloyDBDocumentSaver
Create an AlloyDBDocumentSaver instance.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.create_sync
langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.delete
delete
(
docs
:
list
[
langchain_core
.
documents
.
base
.
Document
])
-
> None
Delete all instances of a document from the DocumentSaver table by matching the entire Document object.
See more: langchain_google_alloydb_pg.loader.AlloyDBDocumentSaver.delete
langchain_google_alloydb_pg.loader.AlloyDBLoader
AlloyDBLoader
(
key
:
object
,
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
loader
:
langchain_google_alloydb_pg
.
async_loader
.
AsyncAlloyDBLoader
,
)
AlloyDBLoader constructor.
langchain_google_alloydb_pg.loader.AlloyDBLoader.alazy_load
alazy_load
()
-
> typing
.
AsyncIterator
[
langchain_core
.
documents
.
base
.
Document
]
Load PostgreSQL data into Document objects lazily.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.alazy_load
langchain_google_alloydb_pg.loader.AlloyDBLoader.aload
aload
()
-
> list
[
langchain_core
.
documents
.
base
.
Document
]
Load PostgreSQL data into Document objects.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.aload
langchain_google_alloydb_pg.loader.AlloyDBLoader.create
create
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
query
:
typing
.
Optional
[
str
]
=
None
,
table_name
:
typing
.
Optional
[
str
]
=
None
,
schema_name
:
str
=
"public"
,
content_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
metadata_json_column
:
typing
.
Optional
[
str
]
=
None
,
format
:
typing
.
Optional
[
str
]
=
None
,
formatter
:
typing
.
Optional
[
typing
.
Callable
]
=
None
,
)
-
> langchain_google_alloydb_pg
.
loader
.
AlloyDBLoader
Create a new AlloyDBLoader instance.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.create
langchain_google_alloydb_pg.loader.AlloyDBLoader.create_sync
create_sync
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
query
:
typing
.
Optional
[
str
]
=
None
,
table_name
:
typing
.
Optional
[
str
]
=
None
,
schema_name
:
str
=
"public"
,
content_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
metadata_json_column
:
typing
.
Optional
[
str
]
=
None
,
format
:
typing
.
Optional
[
str
]
=
None
,
formatter
:
typing
.
Optional
[
typing
.
Callable
]
=
None
,
)
-
> langchain_google_alloydb_pg
.
loader
.
AlloyDBLoader
Create a new AlloyDBLoader instance.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.create_sync
langchain_google_alloydb_pg.loader.AlloyDBLoader.lazy_load
lazy_load
()
-
> typing
.
Iterator
[
langchain_core
.
documents
.
base
.
Document
]
Load PostgreSQL data into Document objects lazily.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.lazy_load
langchain_google_alloydb_pg.loader.AlloyDBLoader.load
load
()
-
> list
[
langchain_core
.
documents
.
base
.
Document
]
Load PostgreSQL data into Document objects.
See more: langchain_google_alloydb_pg.loader.AlloyDBLoader.load
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore
AlloyDBVectorStore
(
key
:
object
,
engine
:
langchain_postgres
.
v2
.
engine
.
PGEngine
,
vs
:
langchain_postgres
.
v2
.
async_vectorstore
.
AsyncPGVectorStore
,
)
PGVectorStore constructor.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.aadd_images
aadd_images
(
uris
:
list
[
str
],
metadatas
:
typing
.
Optional
[
list
[
dict
]]
=
None
,
ids
:
typing
.
Optional
[
list
[
str
]]
=
None
,
store_uri_only
:
bool
=
False
,
**
kwargs
:
typing
.
Any
)
-
> list
[
str
]
Embed images and add to the table.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.aadd_images
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.add_images
add_images
(
uris
:
list
[
str
],
metadatas
:
typing
.
Optional
[
list
[
dict
]]
=
None
,
ids
:
typing
.
Optional
[
list
[
str
]]
=
None
,
store_uri_only
:
bool
=
False
,
**
kwargs
:
typing
.
Any
)
-
> list
[
str
]
Embed images and add to the table.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.add_images
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.aset_maintenance_work_mem
aset_maintenance_work_mem
(
num_leaves
:
int
,
vector_size
:
int
)
-
> None
Set database maintenance work memory (for ScaNN index creation).
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.aset_maintenance_work_mem
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.asimilarity_search_image
asimilarity_search_image
(
image_uri
:
str
,
k
:
typing
.
Optional
[
int
]
=
None
,
filter
:
typing
.
Optional
[
dict
]
=
None
,
**
kwargs
:
typing
.
Any
)
-
> list
[
langchain_core
.
documents
.
base
.
Document
]
Return docs selected by similarity search on image_uri.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.asimilarity_search_image
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.create
create
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
embedding_service
:
langchain_core
.
embeddings
.
embeddings
.
Embeddings
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"content"
,
embedding_column
:
str
=
"embedding"
,
metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
ignore_metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
id_column
:
str
=
"langchain_id"
,
metadata_json_column
:
typing
.
Optional
[
str
]
=
"langchain_metadata"
,
distance_strategy
:
langchain_postgres
.
v2
.
indexes
.
DistanceStrategy
=
DistanceStrategy
.
COSINE_DISTANCE
,
k
:
int
=
4
,
fetch_k
:
int
=
20
,
lambda_mult
:
float
=
0.5
,
index_query_options
:
typing
.
Optional
[
langchain_postgres
.
v2
.
indexes
.
QueryOptions
]
=
None
,
hybrid_search_config
:
typing
.
Optional
[
langchain_postgres
.
v2
.
hybrid_search_config
.
HybridSearchConfig
]
=
None
,
)
-
> langchain_google_alloydb_pg
.
vectorstore
.
AlloyDBVectorStore
Create an PGVectorStore instance.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.create
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.create_sync
create_sync
(
engine
:
langchain_google_alloydb_pg
.
engine
.
AlloyDBEngine
,
embedding_service
:
langchain_core
.
embeddings
.
embeddings
.
Embeddings
,
table_name
:
str
,
schema_name
:
str
=
"public"
,
content_column
:
str
=
"content"
,
embedding_column
:
str
=
"embedding"
,
metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
ignore_metadata_columns
:
typing
.
Optional
[
list
[
str
]]
=
None
,
id_column
:
str
=
"langchain_id"
,
metadata_json_column
:
str
=
"langchain_metadata"
,
distance_strategy
:
langchain_postgres
.
v2
.
indexes
.
DistanceStrategy
=
DistanceStrategy
.
COSINE_DISTANCE
,
k
:
int
=
4
,
fetch_k
:
int
=
20
,
lambda_mult
:
float
=
0.5
,
index_query_options
:
typing
.
Optional
[
langchain_postgres
.
v2
.
indexes
.
QueryOptions
]
=
None
,
hybrid_search_config
:
typing
.
Optional
[
langchain_postgres
.
v2
.
hybrid_search_config
.
HybridSearchConfig
]
=
None
,
)
-
> langchain_google_alloydb_pg
.
vectorstore
.
AlloyDBVectorStore
Create an AlloyDBVectorStore instance.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.create_sync
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.set_maintenance_work_mem
set_maintenance_work_mem
(
num_leaves
:
int
,
vector_size
:
int
)
-
> None
Set database maintenance work memory (for ScaNN index creation).
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.set_maintenance_work_mem
langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.similarity_search_image
similarity_search_image
(
image_uri
:
str
,
k
:
typing
.
Optional
[
int
]
=
None
,
filter
:
typing
.
Optional
[
dict
]
=
None
,
**
kwargs
:
typing
.
Any
)
-
> list
[
langchain_core
.
documents
.
base
.
Document
]
Return docs selected by similarity search on image.
See more: langchain_google_alloydb_pg.vectorstore.AlloyDBVectorStore.similarity_search_image
