refactor!: use namespace models directly for namespace operations (#2806)

1. Use generated models in lance-namespace for request response models
to avoid multiple layers of conversions
2. Make sure the API is consistent with the namespace spec
3. Deprecate the table_names API in favor of the list_tables API in
namespace that allows full pagination support without the need to have
sorted table names
4. Add describe_namespace API which was a miss in the original
implementation

rust/lancedb/src/connection.rs

@@ -9,6 +9,11 @@ use std::sync::Arc;
 use arrow_array::RecordBatchReader;
 use arrow_schema::{Field, SchemaRef};
 use lance::dataset::ReadParams;
+use lance_namespace::models::{
+    CreateNamespaceRequest, CreateNamespaceResponse, DescribeNamespaceRequest,
+    DescribeNamespaceResponse, DropNamespaceRequest, DropNamespaceResponse, ListNamespacesRequest,
+    ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
+};
 #[cfg(feature = "aws")]
 use object_store::aws::AwsCredential;
 
@@ -17,9 +22,8 @@ use crate::database::listing::{
     ListingDatabase, OPT_NEW_TABLE_STORAGE_VERSION, OPT_NEW_TABLE_V2_MANIFEST_PATHS,
 };
 use crate::database::{
-    CloneTableRequest, CreateNamespaceRequest, CreateTableData, CreateTableMode,
-    CreateTableRequest, Database, DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest,
-    OpenTableRequest, ReadConsistency, TableNamesRequest,
+    CloneTableRequest, CreateTableData, CreateTableMode, CreateTableRequest, Database,
+    DatabaseOptions, OpenTableRequest, ReadConsistency, TableNamesRequest,
 };
 use crate::embeddings::{
     EmbeddingDefinition, EmbeddingFunction, EmbeddingRegistry, MemoryRegistry, WithEmbeddings,
@@ -74,6 +78,7 @@ impl TableNamesBuilder {
     }
 
     /// Execute the table names operation
+    #[allow(deprecated)]
     pub async fn execute(self) -> Result<Vec<String>> {
         self.parent.clone().table_names(self.request).await
     }
@@ -768,20 +773,42 @@ impl Connection {
     }
 
     /// List immediate child namespace names in the given namespace
-    pub async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>> {
+    pub async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> Result<ListNamespacesResponse> {
         self.internal.list_namespaces(request).await
     }
 
     /// Create a new namespace
-    pub async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()> {
+    pub async fn create_namespace(
+        &self,
+        request: CreateNamespaceRequest,
+    ) -> Result<CreateNamespaceResponse> {
         self.internal.create_namespace(request).await
     }
 
     /// Drop a namespace
-    pub async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()> {
+    pub async fn drop_namespace(
+        &self,
+        request: DropNamespaceRequest,
+    ) -> Result<DropNamespaceResponse> {
         self.internal.drop_namespace(request).await
     }
 
+    /// Describe a namespace
+    pub async fn describe_namespace(
+        &self,
+        request: DescribeNamespaceRequest,
+    ) -> Result<DescribeNamespaceResponse> {
+        self.internal.describe_namespace(request).await
+    }
+
+    /// List tables with pagination support
+    pub async fn list_tables(&self, request: ListTablesRequest) -> Result<ListTablesResponse> {
+        self.internal.list_tables(request).await
+    }
+
     /// Get the in-memory embedding registry.
     /// It's important to note that the embedding registry is not persisted across connections.
     /// So if a table contains embeddings, you will need to make sure that you are using a connection that has the same embedding functions registered

rust/lancedb/src/database.rs

@@ -24,6 +24,11 @@ use datafusion_physical_plan::stream::RecordBatchStreamAdapter;
 use futures::stream;
 use lance::dataset::ReadParams;
 use lance_datafusion::utils::StreamingWriteSource;
+use lance_namespace::models::{
+    CreateNamespaceRequest, CreateNamespaceResponse, DescribeNamespaceRequest,
+    DescribeNamespaceResponse, DropNamespaceRequest, DropNamespaceResponse, ListNamespacesRequest,
+    ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
+};
 use lance_namespace::LanceNamespace;
 
 use crate::arrow::{SendableRecordBatchStream, SendableRecordBatchStreamExt};
@@ -37,32 +42,7 @@ pub trait DatabaseOptions {
     fn serialize_into_map(&self, map: &mut HashMap<String, String>);
 }
 
-/// A request to list namespaces in the database
-#[derive(Clone, Debug, Default)]
-pub struct ListNamespacesRequest {
-    /// The parent namespace to list namespaces in. Empty list represents root namespace.
-    pub namespace: Vec<String>,
-    /// If present, only return names that come lexicographically after the supplied value.
-    pub page_token: Option<String>,
-    /// The maximum number of namespace names to return
-    pub limit: Option<u32>,
-}
-
-/// A request to create a namespace
-#[derive(Clone, Debug)]
-pub struct CreateNamespaceRequest {
-    /// The namespace identifier to create
-    pub namespace: Vec<String>,
-}
-
-/// A request to drop a namespace
-#[derive(Clone, Debug)]
-pub struct DropNamespaceRequest {
-    /// The namespace identifier to drop
-    pub namespace: Vec<String>,
-}
-
-/// A request to list names of tables in the database
+/// A request to list names of tables in the database (deprecated, use ListTablesRequest)
 #[derive(Clone, Debug, Default)]
 pub struct TableNamesRequest {
     /// The namespace to list tables in. Empty list represents root namespace.
@@ -268,13 +248,30 @@ pub trait Database:
     /// Get the read consistency of the database
     async fn read_consistency(&self) -> Result<ReadConsistency>;
     /// List immediate child namespace names in the given namespace
-    async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>>;
+    async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> Result<ListNamespacesResponse>;
     /// Create a new namespace
-    async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()>;
+    async fn create_namespace(
+        &self,
+        request: CreateNamespaceRequest,
+    ) -> Result<CreateNamespaceResponse>;
     /// Drop a namespace
-    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()>;
+    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<DropNamespaceResponse>;
+    /// Describe a namespace (get its properties)
+    async fn describe_namespace(
+        &self,
+        request: DescribeNamespaceRequest,
+    ) -> Result<DescribeNamespaceResponse>;
     /// List the names of tables in the database
+    ///
+    /// # Deprecated
+    /// Use `list_tables` instead for pagination support
+    #[deprecated(note = "Use list_tables instead")]
     async fn table_names(&self, request: TableNamesRequest) -> Result<Vec<String>>;
+    /// List tables in the database with pagination support
+    async fn list_tables(&self, request: ListTablesRequest) -> Result<ListTablesResponse>;
     /// Create a table in the database
     async fn create_table(&self, request: CreateTableRequest) -> Result<Arc<dyn BaseTable>>;
     /// Clone a table in the database.

rust/lancedb/src/database/listing.rs

@@ -24,10 +24,15 @@ use crate::io::object_store::MirroringObjectStoreWrapper;
 use crate::table::NativeTable;
 use crate::utils::validate_table_name;
 
+use lance_namespace::models::{
+    CreateNamespaceRequest, CreateNamespaceResponse, DescribeNamespaceRequest,
+    DescribeNamespaceResponse, DropNamespaceRequest, DropNamespaceResponse, ListNamespacesRequest,
+    ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
+};
+
 use super::{
-    BaseTable, CloneTableRequest, CreateNamespaceRequest, CreateTableMode, CreateTableRequest,
-    Database, DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest, OpenTableRequest,
-    TableNamesRequest,
+    BaseTable, CloneTableRequest, CreateTableMode, CreateTableRequest, Database, DatabaseOptions,
+    OpenTableRequest, TableNamesRequest,
 };
 
 /// File extension to indicate a lance table
@@ -663,14 +668,20 @@ impl ListingDatabase {
 
 #[async_trait::async_trait]
 impl Database for ListingDatabase {
-    async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>> {
-        if !request.namespace.is_empty() {
+    async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> Result<ListNamespacesResponse> {
+        if request.id.as_ref().map(|v| !v.is_empty()).unwrap_or(false) {
             return Err(Error::NotSupported {
                 message: "Namespace operations are not supported for listing database".into(),
             });
         }
 
-        Ok(Vec::new())
+        Ok(ListNamespacesResponse {
+            namespaces: Vec::new(),
+            page_token: None,
+        })
     }
 
     fn uri(&self) -> &str {
@@ -689,13 +700,28 @@ impl Database for ListingDatabase {
         }
     }
 
-    async fn create_namespace(&self, _request: CreateNamespaceRequest) -> Result<()> {
+    async fn create_namespace(
+        &self,
+        _request: CreateNamespaceRequest,
+    ) -> Result<CreateNamespaceResponse> {
         Err(Error::NotSupported {
             message: "Namespace operations are not supported for listing database".into(),
         })
     }
 
-    async fn drop_namespace(&self, _request: DropNamespaceRequest) -> Result<()> {
+    async fn drop_namespace(
+        &self,
+        _request: DropNamespaceRequest,
+    ) -> Result<DropNamespaceResponse> {
+        Err(Error::NotSupported {
+            message: "Namespace operations are not supported for listing database".into(),
+        })
+    }
+
+    async fn describe_namespace(
+        &self,
+        _request: DescribeNamespaceRequest,
+    ) -> Result<DescribeNamespaceResponse> {
         Err(Error::NotSupported {
             message: "Namespace operations are not supported for listing database".into(),
         })
@@ -736,6 +762,57 @@ impl Database for ListingDatabase {
         Ok(f)
     }
 
+    async fn list_tables(&self, request: ListTablesRequest) -> Result<ListTablesResponse> {
+        if request.id.as_ref().map(|v| !v.is_empty()).unwrap_or(false) {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database. Only root namespace is supported.".into(),
+            });
+        }
+        let mut f = self
+            .object_store
+            .read_dir(self.base_path.clone())
+            .await?
+            .iter()
+            .map(Path::new)
+            .filter(|path| {
+                let is_lance = path
+                    .extension()
+                    .and_then(|e| e.to_str())
+                    .map(|e| e == LANCE_EXTENSION);
+                is_lance.unwrap_or(false)
+            })
+            .filter_map(|p| p.file_stem().and_then(|s| s.to_str().map(String::from)))
+            .collect::<Vec<String>>();
+        f.sort();
+
+        // Handle pagination with page_token
+        if let Some(ref page_token) = request.page_token {
+            let index = f
+                .iter()
+                .position(|name| name.as_str() > page_token.as_str())
+                .unwrap_or(f.len());
+            f.drain(0..index);
+        }
+
+        // Determine if there's a next page
+        let next_page_token = if let Some(limit) = request.limit {
+            if f.len() > limit as usize {
+                let token = f[limit as usize].clone();
+                f.truncate(limit as usize);
+                Some(token)
+            } else {
+                None
+            }
+        } else {
+            None
+        };
+
+        Ok(ListTablesResponse {
+            tables: f,
+            page_token: next_page_token,
+        })
+    }
+
     async fn create_table(&self, request: CreateTableRequest) -> Result<Arc<dyn BaseTable>> {
         // When namespace is not empty, location must be provided
         if !request.namespace.is_empty() && request.location.is_none() {
@@ -951,6 +1028,7 @@ impl Database for ListingDatabase {
         self.drop_tables(vec![name.to_string()]).await
     }
 
+    #[allow(deprecated)]
     async fn drop_all_tables(&self, namespace: &[String]) -> Result<()> {
         // Check if namespace parameter is provided
         if !namespace.is_empty() {
@@ -1037,6 +1115,7 @@ mod tests {
             .unwrap();
 
         // Verify both tables exist
+        #[allow(deprecated)]
         let table_names = db.table_names(TableNamesRequest::default()).await.unwrap();
         assert!(table_names.contains(&"source_table".to_string()));
         assert!(table_names.contains(&"cloned_table".to_string()));
@@ -1733,6 +1812,7 @@ mod tests {
                 mode: CreateTableMode::Create,
                 write_options: Default::default(),
                 location: None,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1786,6 +1866,7 @@ mod tests {
                 mode: CreateTableMode::Create,
                 write_options,
                 location: None,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1859,6 +1940,7 @@ mod tests {
                 mode: CreateTableMode::Create,
                 write_options,
                 location: None,
+                namespace_client: None,
             })
             .await
             .unwrap();

rust/lancedb/src/database/namespace.rs

@@ -10,8 +10,10 @@ use async_trait::async_trait;
 use lance_io::object_store::{LanceNamespaceStorageOptionsProvider, StorageOptionsProvider};
 use lance_namespace::{
     models::{
-        CreateEmptyTableRequest, CreateNamespaceRequest, DescribeTableRequest,
-        DropNamespaceRequest, DropTableRequest, ListNamespacesRequest, ListTablesRequest,
+        CreateEmptyTableRequest, CreateNamespaceRequest, CreateNamespaceResponse,
+        DescribeNamespaceRequest, DescribeNamespaceResponse, DescribeTableRequest,
+        DropNamespaceRequest, DropNamespaceResponse, DropTableRequest, ListNamespacesRequest,
+        ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
     },
     LanceNamespace,
 };
@@ -22,11 +24,8 @@ use crate::database::ReadConsistency;
 use crate::error::{Error, Result};
 
 use super::{
-    listing::ListingDatabase, BaseTable, CloneTableRequest,
-    CreateNamespaceRequest as DbCreateNamespaceRequest, CreateTableMode,
-    CreateTableRequest as DbCreateTableRequest, Database,
-    DropNamespaceRequest as DbDropNamespaceRequest,
-    ListNamespacesRequest as DbListNamespacesRequest, OpenTableRequest, TableNamesRequest,
+    listing::ListingDatabase, BaseTable, CloneTableRequest, CreateTableMode,
+    CreateTableRequest as DbCreateTableRequest, Database, OpenTableRequest, TableNamesRequest,
 };
 
 /// A database implementation that uses lance-namespace for table management
@@ -154,68 +153,29 @@ impl Database for LanceNamespaceDatabase {
         }
     }
 
-    async fn list_namespaces(&self, request: DbListNamespacesRequest) -> Result<Vec<String>> {
-        let ns_request = ListNamespacesRequest {
-            id: if request.namespace.is_empty() {
-                None
-            } else {
-                Some(request.namespace)
-            },
-            page_token: request.page_token,
-            limit: request.limit.map(|l| l as i32),
-        };
-
-        let response = self
-            .namespace
-            .list_namespaces(ns_request)
-            .await
-            .map_err(|e| Error::Runtime {
-                message: format!("Failed to list namespaces: {}", e),
-            })?;
-
-        Ok(response.namespaces)
+    async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> Result<ListNamespacesResponse> {
+        Ok(self.namespace.list_namespaces(request).await?)
     }
 
-    async fn create_namespace(&self, request: DbCreateNamespaceRequest) -> Result<()> {
-        let ns_request = CreateNamespaceRequest {
-            id: if request.namespace.is_empty() {
-                None
-            } else {
-                Some(request.namespace)
-            },
-            mode: None,
-            properties: None,
-        };
-
-        self.namespace
-            .create_namespace(ns_request)
-            .await
-            .map_err(|e| Error::Runtime {
-                message: format!("Failed to create namespace: {}", e),
-            })?;
-
-        Ok(())
+    async fn create_namespace(
+        &self,
+        request: CreateNamespaceRequest,
+    ) -> Result<CreateNamespaceResponse> {
+        Ok(self.namespace.create_namespace(request).await?)
     }
 
-    async fn drop_namespace(&self, request: DbDropNamespaceRequest) -> Result<()> {
-        let ns_request = DropNamespaceRequest {
-            id: if request.namespace.is_empty() {
-                None
-            } else {
-                Some(request.namespace)
-            },
-            mode: None,
-            behavior: None,
-        };
+    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<DropNamespaceResponse> {
+        Ok(self.namespace.drop_namespace(request).await?)
+    }
 
-        self.namespace
-            .drop_namespace(ns_request)
-            .await
-            .map_err(|e| Error::Runtime {
-                message: format!("Failed to drop namespace: {}", e),
-            })?;
-
-        Ok(())
+    async fn describe_namespace(
+        &self,
+        request: DescribeNamespaceRequest,
+    ) -> Result<DescribeNamespaceResponse> {
+        Ok(self.namespace.describe_namespace(request).await?)
     }
 
     async fn table_names(&self, request: TableNamesRequest) -> Result<Vec<String>> {
@@ -229,17 +189,15 @@ impl Database for LanceNamespaceDatabase {
             limit: request.limit.map(|l| l as i32),
         };
 
-        let response =
-            self.namespace
-                .list_tables(ns_request)
-                .await
-                .map_err(|e| Error::Runtime {
-                    message: format!("Failed to list tables: {}", e),
-                })?;
+        let response = self.namespace.list_tables(ns_request).await?;
 
         Ok(response.tables)
     }
 
+    async fn list_tables(&self, request: ListTablesRequest) -> Result<ListTablesResponse> {
+        Ok(self.namespace.list_tables(request).await?)
+    }
+
     async fn create_table(&self, request: DbCreateTableRequest) -> Result<Arc<dyn BaseTable>> {
         // Extract user-provided storage options from request
         let user_storage_options = request
@@ -451,6 +409,7 @@ impl Database for LanceNamespaceDatabase {
         Ok(())
     }
 
+    #[allow(deprecated)]
     async fn drop_all_tables(&self, namespace: &[String]) -> Result<()> {
         let tables = self
             .table_names(TableNamesRequest {
@@ -477,7 +436,6 @@ impl Database for LanceNamespaceDatabase {
 mod tests {
     use super::*;
     use crate::connect_namespace;
-    use crate::database::CreateNamespaceRequest;
     use crate::query::ExecutableQuery;
     use arrow_array::{Int32Array, RecordBatch, RecordBatchIterator, StringArray};
     use arrow_schema::{DataType, Field, Schema};
@@ -590,7 +548,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -649,7 +609,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -711,7 +673,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -793,7 +757,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -847,7 +813,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -926,7 +894,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");
@@ -958,7 +928,9 @@ mod tests {
 
         // Create a child namespace first
         conn.create_namespace(CreateNamespaceRequest {
-            namespace: vec!["test_ns".into()],
+            id: Some(vec!["test_ns".into()]),
+            mode: None,
+            properties: None,
         })
         .await
         .expect("Failed to create namespace");

rust/lancedb/src/remote/db.rs

@@ -10,13 +10,17 @@ use http::StatusCode;
 use lance_io::object_store::StorageOptions;
 use moka::future::Cache;
 use reqwest::header::CONTENT_TYPE;
-use serde::Deserialize;
 use tokio::task::spawn_blocking;
 
+use lance_namespace::models::{
+    CreateNamespaceRequest, CreateNamespaceResponse, DescribeNamespaceRequest,
+    DescribeNamespaceResponse, DropNamespaceRequest, DropNamespaceResponse, ListNamespacesRequest,
+    ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
+};
+
 use crate::database::{
-    CloneTableRequest, CreateNamespaceRequest, CreateTableData, CreateTableMode,
-    CreateTableRequest, Database, DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest,
-    OpenTableRequest, ReadConsistency, TableNamesRequest,
+    CloneTableRequest, CreateTableData, CreateTableMode, CreateTableRequest, Database,
+    DatabaseOptions, OpenTableRequest, ReadConsistency, TableNamesRequest,
 };
 use crate::error::Result;
 use crate::table::BaseTable;
@@ -180,11 +184,6 @@ impl RemoteDatabaseOptionsBuilder {
     }
 }
 
-#[derive(Deserialize)]
-struct ListTablesResponse {
-    tables: Vec<String>,
-}
-
 #[derive(Debug)]
 pub struct RemoteDatabase<S: HttpSend = Sender> {
     client: RestfulLanceDbClient<S>,
@@ -337,7 +336,6 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
             self.client
                 .get(&format!("/v1/namespace/{}/table/list", namespace_id))
         } else {
-            // TODO: use new API for all listing operations once stable
             self.client.get("/v1/table/")
         };
 
@@ -371,6 +369,44 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
         Ok(tables)
     }
 
+    async fn list_tables(&self, request: ListTablesRequest) -> Result<ListTablesResponse> {
+        let namespace_parts = request.id.as_deref().unwrap_or(&[]);
+        let namespace_id = build_namespace_identifier(namespace_parts, &self.client.id_delimiter);
+        let mut req = self
+            .client
+            .get(&format!("/v1/namespace/{}/table/list", namespace_id));
+
+        if let Some(limit) = request.limit {
+            req = req.query(&[("limit", limit)]);
+        }
+        if let Some(ref page_token) = request.page_token {
+            req = req.query(&[("page_token", page_token)]);
+        }
+
+        let (request_id, rsp) = self.client.send_with_retry(req, None, true).await?;
+        let rsp = self.client.check_response(&request_id, rsp).await?;
+        let version = parse_server_version(&request_id, &rsp)?;
+        let response: ListTablesResponse = rsp.json().await.err_to_http(request_id)?;
+
+        // Cache the tables for future use
+        let namespace_vec = namespace_parts.to_vec();
+        for table in &response.tables {
+            let table_identifier =
+                build_table_identifier(table, &namespace_vec, &self.client.id_delimiter);
+            let cache_key = build_cache_key(table, &namespace_vec);
+            let remote_table = Arc::new(RemoteTable::new(
+                self.client.clone(),
+                table.clone(),
+                namespace_vec.clone(),
+                table_identifier.clone(),
+                version.clone(),
+            ));
+            self.table_cache.insert(cache_key, remote_table).await;
+        }
+
+        Ok(response)
+    }
+
     async fn create_table(&self, request: CreateTableRequest) -> Result<Arc<dyn BaseTable>> {
         let data = match request.data {
             CreateTableData::Data(data) => data,
@@ -591,53 +627,101 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
         })
     }
 
-    async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>> {
-        let namespace_id =
-            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
+    async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> Result<ListNamespacesResponse> {
+        let namespace_parts = request.id.as_deref().unwrap_or(&[]);
+        let namespace_id = build_namespace_identifier(namespace_parts, &self.client.id_delimiter);
         let mut req = self
             .client
             .get(&format!("/v1/namespace/{}/list", namespace_id));
         if let Some(limit) = request.limit {
             req = req.query(&[("limit", limit)]);
         }
-        if let Some(page_token) = request.page_token {
+        if let Some(ref page_token) = request.page_token {
             req = req.query(&[("page_token", page_token)]);
         }
 
         let (request_id, resp) = self.client.send(req).await?;
         let resp = self.client.check_response(&request_id, resp).await?;
 
-        #[derive(Deserialize)]
-        struct ListNamespacesResponse {
-            namespaces: Vec<String>,
-        }
-
-        let parsed: ListNamespacesResponse = resp.json().await.map_err(|e| Error::Runtime {
-            message: format!("Failed to parse namespace response: {}", e),
-        })?;
-        Ok(parsed.namespaces)
+        resp.json().await.err_to_http(request_id)
     }
 
-    async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()> {
-        let namespace_id =
-            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
-        let req = self
+    async fn create_namespace(
+        &self,
+        request: CreateNamespaceRequest,
+    ) -> Result<CreateNamespaceResponse> {
+        let namespace_parts = request.id.as_deref().unwrap_or(&[]);
+        let namespace_id = build_namespace_identifier(namespace_parts, &self.client.id_delimiter);
+        let mut req = self
             .client
             .post(&format!("/v1/namespace/{}/create", namespace_id));
+
+        // Build request body with mode and properties if present
+        #[derive(serde::Serialize)]
+        struct CreateNamespaceRequestBody {
+            #[serde(skip_serializing_if = "Option::is_none")]
+            mode: Option<String>,
+            #[serde(skip_serializing_if = "Option::is_none")]
+            properties: Option<HashMap<String, String>>,
+        }
+
+        let body = CreateNamespaceRequestBody {
+            mode: request.mode.as_ref().map(|m| format!("{:?}", m)),
+            properties: request.properties,
+        };
+
+        req = req.json(&body);
         let (request_id, resp) = self.client.send(req).await?;
-        self.client.check_response(&request_id, resp).await?;
-        Ok(())
+        let resp = self.client.check_response(&request_id, resp).await?;
+
+        resp.json().await.err_to_http(request_id)
     }
 
-    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()> {
-        let namespace_id =
-            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
-        let req = self
+    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<DropNamespaceResponse> {
+        let namespace_parts = request.id.as_deref().unwrap_or(&[]);
+        let namespace_id = build_namespace_identifier(namespace_parts, &self.client.id_delimiter);
+        let mut req = self
             .client
             .post(&format!("/v1/namespace/{}/drop", namespace_id));
+
+        // Build request body with mode and behavior if present
+        #[derive(serde::Serialize)]
+        struct DropNamespaceRequestBody {
+            #[serde(skip_serializing_if = "Option::is_none")]
+            mode: Option<String>,
+            #[serde(skip_serializing_if = "Option::is_none")]
+            behavior: Option<String>,
+        }
+
+        let body = DropNamespaceRequestBody {
+            mode: request.mode.as_ref().map(|m| format!("{:?}", m)),
+            behavior: request.behavior.as_ref().map(|b| format!("{:?}", b)),
+        };
+
+        req = req.json(&body);
         let (request_id, resp) = self.client.send(req).await?;
-        self.client.check_response(&request_id, resp).await?;
-        Ok(())
+        let resp = self.client.check_response(&request_id, resp).await?;
+
+        resp.json().await.err_to_http(request_id)
+    }
+
+    async fn describe_namespace(
+        &self,
+        request: DescribeNamespaceRequest,
+    ) -> Result<DescribeNamespaceResponse> {
+        let namespace_parts = request.id.as_deref().unwrap_or(&[]);
+        let namespace_id = build_namespace_identifier(namespace_parts, &self.client.id_delimiter);
+        let req = self
+            .client
+            .get(&format!("/v1/namespace/{}/describe", namespace_id));
+
+        let (request_id, resp) = self.client.send(req).await?;
+        let resp = self.client.check_response(&request_id, resp).await?;
+
+        resp.json().await.err_to_http(request_id)
     }
 
     fn as_any(&self) -> &dyn std::any::Any {