Add Handle suffix to DataChunk and LogicalType

crates/duckdb/examples/hello-ext/main.rs

@@ -3,7 +3,7 @@ extern crate duckdb_loadable_macros;
 extern crate libduckdb_sys;
 
 use duckdb::{
-    core::{DataChunk, Inserter, LogicalType, LogicalTypeId},
+    core::{DataChunkHandle, Inserter, LogicalTypeHandle, LogicalTypeId},
     vtab::{BindInfo, Free, FunctionInfo, InitInfo, VTab},
     Connection, Result,
 };
@@ -44,7 +44,7 @@ impl VTab for HelloVTab {
     type BindData = HelloBindData;
 
     unsafe fn bind(bind: &BindInfo, data: *mut HelloBindData) -> Result<(), Box<dyn std::error::Error>> {
-        bind.add_result_column("column0", LogicalType::new(LogicalTypeId::Varchar));
+        bind.add_result_column("column0", LogicalTypeHandle::from(LogicalTypeId::Varchar));
         let param = bind.get_parameter(0).to_string();
         unsafe {
             (*data).name = CString::new(param).unwrap().into_raw();
@@ -59,7 +59,7 @@ impl VTab for HelloVTab {
         Ok(())
     }
 
-    unsafe fn func(func: &FunctionInfo, output: &mut DataChunk) -> Result<(), Box<dyn std::error::Error>> {
+    unsafe fn func(func: &FunctionInfo, output: &mut DataChunkHandle) -> Result<(), Box<dyn std::error::Error>> {
         let init_info = func.get_init_data::<HelloInitData>();
         let bind_info = func.get_bind_data::<HelloBindData>();
 
@@ -80,8 +80,8 @@ impl VTab for HelloVTab {
         Ok(())
     }
 
-    fn parameters() -> Option<Vec<LogicalType>> {
-        Some(vec![LogicalType::new(LogicalTypeId::Varchar)])
+    fn parameters() -> Option<Vec<LogicalTypeHandle>> {
+        Some(vec![LogicalTypeHandle::from(LogicalTypeId::Varchar)])
     }
 }
 

crates/duckdb/src/appender/arrow.rs

@@ -1,6 +1,6 @@
 use super::{ffi, Appender, Result};
 use crate::{
-    core::{DataChunk, LogicalType},
+    core::{DataChunkHandle, LogicalTypeHandle},
     error::result_from_duckdb_appender,
     vtab::{record_batch_to_duckdb_data_chunk, to_duckdb_logical_type},
     Error,
@@ -29,14 +29,14 @@ impl Appender<'_> {
     #[inline]
     pub fn append_record_batch(&mut self, record_batch: RecordBatch) -> Result<()> {
         let schema = record_batch.schema();
-        let mut logical_type: Vec<LogicalType> = vec![];
+        let mut logical_type: Vec<LogicalTypeHandle> = vec![];
         for field in schema.fields() {
             let logical_t = to_duckdb_logical_type(field.data_type())
                 .map_err(|_op| Error::ArrowTypeToDuckdbType(field.to_string(), field.data_type().clone()))?;
             logical_type.push(logical_t);
         }
 
-        let mut data_chunk = DataChunk::new(&logical_type);
+        let mut data_chunk = DataChunkHandle::new(&logical_type);
         record_batch_to_duckdb_data_chunk(&record_batch, &mut data_chunk).map_err(|_op| Error::AppendError)?;
 
         let rc = unsafe { duckdb_append_data_chunk(self.app, data_chunk.get_ptr()) };

crates/duckdb/src/core/data_chunk.rs

@@ -1,28 +1,41 @@
 use super::{
-    logical_type::LogicalType,
+    logical_type::LogicalTypeHandle,
     vector::{ArrayVector, FlatVector, ListVector, StructVector},
 };
 use crate::ffi::{
     duckdb_create_data_chunk, duckdb_data_chunk, duckdb_data_chunk_get_column_count, duckdb_data_chunk_get_size,
     duckdb_data_chunk_get_vector, duckdb_data_chunk_set_size, duckdb_destroy_data_chunk,
 };
 
-/// DataChunk in DuckDB.
-pub struct DataChunk {
+/// Handle to the DataChunk in DuckDB.
+pub struct DataChunkHandle {
     /// Pointer to the DataChunk in duckdb C API.
     ptr: duckdb_data_chunk,
 
-    /// Whether this [DataChunk] own the [DataChunk::ptr].
+    /// Whether this [DataChunkHandle] own the [DataChunk::ptr].
     owned: bool,
 }
 
-impl DataChunk {
-    /// Create a new [DataChunk] with the given [LogicalType]s.
-    pub fn new(logical_types: &[LogicalType]) -> Self {
+impl Drop for DataChunkHandle {
+    fn drop(&mut self) {
+        if self.owned && !self.ptr.is_null() {
+            unsafe { duckdb_destroy_data_chunk(&mut self.ptr) }
+            self.ptr = std::ptr::null_mut();
+        }
+    }
+}
+
+impl DataChunkHandle {
+    pub(crate) unsafe fn new_unowned(ptr: duckdb_data_chunk) -> Self {
+        Self { ptr, owned: false }
+    }
+
+    /// Create a new [DataChunkHandle] with the given [LogicalTypeHandle]s.
+    pub fn new(logical_types: &[LogicalTypeHandle]) -> Self {
         let num_columns = logical_types.len();
         let mut c_types = logical_types.iter().map(|t| t.ptr).collect::<Vec<_>>();
         let ptr = unsafe { duckdb_create_data_chunk(c_types.as_mut_ptr(), num_columns as u64) };
-        DataChunk { ptr, owned: true }
+        DataChunkHandle { ptr, owned: true }
     }
 
     /// Get the vector at the specific column index: `idx`.
@@ -50,49 +63,34 @@ impl DataChunk {
         unsafe { duckdb_data_chunk_set_size(self.ptr, new_len as u64) };
     }
 
-    /// Get the length / the number of rows in this [DataChunk].
+    /// Get the length / the number of rows in this [DataChunkHandle].
     pub fn len(&self) -> usize {
         unsafe { duckdb_data_chunk_get_size(self.ptr) as usize }
     }
 
-    /// Check whether this [DataChunk] is empty.
+    /// Check whether this [DataChunkHandle] is empty.
     pub fn is_empty(&self) -> bool {
         self.len() == 0
     }
 
-    /// Get the number of columns in this [DataChunk].
+    /// Get the number of columns in this [DataChunkHandle].
     pub fn num_columns(&self) -> usize {
         unsafe { duckdb_data_chunk_get_column_count(self.ptr) as usize }
     }
 
-    /// Get the ptr of duckdb_data_chunk in this [DataChunk].
+    /// Get the ptr of duckdb_data_chunk in this [DataChunkHandle].
     pub fn get_ptr(&self) -> duckdb_data_chunk {
         self.ptr
     }
 }
 
-impl From<duckdb_data_chunk> for DataChunk {
-    fn from(ptr: duckdb_data_chunk) -> Self {
-        Self { ptr, owned: false }
-    }
-}
-
-impl Drop for DataChunk {
-    fn drop(&mut self) {
-        if self.owned && !self.ptr.is_null() {
-            unsafe { duckdb_destroy_data_chunk(&mut self.ptr) }
-            self.ptr = std::ptr::null_mut();
-        }
-    }
-}
-
 #[cfg(test)]
 mod test {
     use super::{super::logical_type::LogicalTypeId, *};
 
     #[test]
     fn test_data_chunk_construction() {
-        let dc = DataChunk::new(&[LogicalType::new(LogicalTypeId::Integer)]);
+        let dc = DataChunkHandle::new(&[LogicalTypeHandle::from(LogicalTypeId::Integer)]);
 
         assert_eq!(dc.num_columns(), 1);
 
@@ -101,7 +99,7 @@ mod test {
 
     #[test]
     fn test_vector() {
-        let datachunk = DataChunk::new(&[LogicalType::new(LogicalTypeId::Bigint)]);
+        let datachunk = DataChunkHandle::new(&[LogicalTypeHandle::from(LogicalTypeId::Bigint)]);
         let mut vector = datachunk.flat_vector(0);
         let data = vector.as_mut_slice::<i64>();
 
@@ -110,11 +108,11 @@ mod test {
 
     #[test]
     fn test_logi() {
-        let key = LogicalType::new(LogicalTypeId::Varchar);
+        let key = LogicalTypeHandle::from(LogicalTypeId::Varchar);
 
-        let value = LogicalType::new(LogicalTypeId::UTinyint);
+        let value = LogicalTypeHandle::from(LogicalTypeId::UTinyint);
 
-        let map = LogicalType::map(&key, &value);
+        let map = LogicalTypeHandle::map(&key, &value);
 
         assert_eq!(map.id(), LogicalTypeId::Map);
 

crates/duckdb/src/core/logical_type.rs

@@ -110,11 +110,11 @@ impl From<u32> for LogicalTypeId {
 
 /// DuckDB Logical Type.
 /// <https://duckdb.org/docs/sql/data_types/overview>
-pub struct LogicalType {
+pub struct LogicalTypeHandle {
     pub(crate) ptr: duckdb_logical_type,
 }
 
-impl Debug for LogicalType {
+impl Debug for LogicalTypeHandle {
     /// Debug implementation for LogicalType
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
         let id = self.id();
@@ -134,7 +134,7 @@ impl Debug for LogicalType {
     }
 }
 
-impl Drop for LogicalType {
+impl Drop for LogicalTypeHandle {
     /// Drop implementation for LogicalType
     fn drop(&mut self) {
         if !self.ptr.is_null() {
@@ -147,25 +147,25 @@ impl Drop for LogicalType {
     }
 }
 
-impl From<duckdb_logical_type> for LogicalType {
-    /// Wrap a DuckDB logical type from C API
-    fn from(ptr: duckdb_logical_type) -> Self {
-        Self { ptr }
-    }
-}
-
-impl LogicalType {
-    /// Create a new [LogicalType] from [LogicalTypeId]
-    pub fn new(id: LogicalTypeId) -> Self {
+impl From<LogicalTypeId> for LogicalTypeHandle {
+    /// Create a new [LogicalTypeHandle] from [LogicalTypeId]
+    fn from(id: LogicalTypeId) -> Self {
         unsafe {
             Self {
                 ptr: duckdb_create_logical_type(id as u32),
             }
         }
     }
+}
+
+impl LogicalTypeHandle {
+    /// Create a DuckDB logical type from C API
+    pub(crate) unsafe fn new(ptr: duckdb_logical_type) -> Self {
+        Self { ptr }
+    }
 
     /// Creates a map type from its child type.
-    pub fn map(key: &LogicalType, value: &LogicalType) -> Self {
+    pub fn map(key: &LogicalTypeHandle, value: &LogicalTypeHandle) -> Self {
         unsafe {
             Self {
                 ptr: duckdb_create_map_type(key.ptr, value.ptr),
@@ -174,7 +174,7 @@ impl LogicalType {
     }
 
     /// Creates a list type from its child type.
-    pub fn list(child_type: &LogicalType) -> Self {
+    pub fn list(child_type: &LogicalTypeHandle) -> Self {
         unsafe {
             Self {
                 ptr: duckdb_create_list_type(child_type.ptr),
@@ -183,7 +183,7 @@ impl LogicalType {
     }
 
     /// Creates an array type from its child type.
-    pub fn array(child_type: &LogicalType, array_size: u64) -> Self {
+    pub fn array(child_type: &LogicalTypeHandle, array_size: u64) -> Self {
         unsafe {
             Self {
                 ptr: duckdb_create_array_type(child_type.ptr, array_size),
@@ -213,7 +213,7 @@ impl LogicalType {
     }
 
     /// Make a `LogicalType` for `struct`
-    pub fn struct_type(fields: &[(&str, LogicalType)]) -> Self {
+    pub fn struct_type(fields: &[(&str, LogicalTypeHandle)]) -> Self {
         let keys: Vec<CString> = fields.iter().map(|f| CString::new(f.0).unwrap()).collect();
         let values: Vec<duckdb_logical_type> = fields.iter().map(|it| it.1.ptr).collect();
         let name_ptrs = keys.iter().map(|it| it.as_ptr()).collect::<Vec<*const c_char>>();
@@ -230,7 +230,7 @@ impl LogicalType {
     }
 
     /// Make a `LogicalType` for `union`
-    pub fn union_type(fields: &[(&str, LogicalType)]) -> Self {
+    pub fn union_type(fields: &[(&str, LogicalTypeHandle)]) -> Self {
         let keys: Vec<CString> = fields.iter().map(|f| CString::new(f.0).unwrap()).collect();
         let values: Vec<duckdb_logical_type> = fields.iter().map(|it| it.1.ptr).collect();
         let name_ptrs = keys.iter().map(|it| it.as_ptr()).collect::<Vec<*const c_char>>();
@@ -287,18 +287,18 @@ impl LogicalType {
                 _ => panic!("not a struct or union"),
             }
         };
-        Self::from(c_logical_type)
+        unsafe { Self::new(c_logical_type) }
     }
 }
 
 #[cfg(test)]
 mod test {
-    use crate::core::{LogicalType, LogicalTypeId};
+    use crate::core::{LogicalTypeHandle, LogicalTypeId};
 
     #[test]
     fn test_struct() {
-        let fields = &[("hello", LogicalType::new(crate::core::LogicalTypeId::Boolean))];
-        let typ = LogicalType::struct_type(fields);
+        let fields = &[("hello", LogicalTypeHandle::from(crate::core::LogicalTypeId::Boolean))];
+        let typ = LogicalTypeHandle::struct_type(fields);
 
         assert_eq!(typ.num_children(), 1);
         assert_eq!(typ.child_name(0), "hello");
@@ -307,7 +307,7 @@ mod test {
 
     #[test]
     fn test_decimal() {
-        let typ = LogicalType::decimal(10, 2);
+        let typ = LogicalTypeHandle::decimal(10, 2);
 
         assert_eq!(typ.id(), crate::core::LogicalTypeId::Decimal);
         assert_eq!(typ.decimal_width(), 10);
@@ -316,7 +316,7 @@ mod test {
 
     #[test]
     fn test_decimal_methods() {
-        let typ = LogicalType::new(crate::core::LogicalTypeId::Varchar);
+        let typ = LogicalTypeHandle::from(crate::core::LogicalTypeId::Varchar);
 
         assert_eq!(typ.decimal_width(), 0);
         assert_eq!(typ.decimal_scale(), 0);
@@ -325,10 +325,10 @@ mod test {
     #[test]
     fn test_union_type() {
         let fields = &[
-            ("hello", LogicalType::new(LogicalTypeId::Boolean)),
-            ("world", LogicalType::new(LogicalTypeId::Integer)),
+            ("hello", LogicalTypeHandle::from(LogicalTypeId::Boolean)),
+            ("world", LogicalTypeHandle::from(LogicalTypeId::Integer)),
         ];
-        let typ = LogicalType::union_type(fields);
+        let typ = LogicalTypeHandle::union_type(fields);
 
         assert_eq!(typ.num_children(), 2);
 

crates/duckdb/src/core/mod.rs

@@ -2,6 +2,6 @@ mod data_chunk;
 mod logical_type;
 mod vector;
 
-pub use data_chunk::DataChunk;
-pub use logical_type::{LogicalType, LogicalTypeId};
+pub use data_chunk::DataChunkHandle;
+pub use logical_type::{LogicalTypeHandle, LogicalTypeId};
 pub use vector::*;

crates/duckdb/src/core/vector.rs

@@ -1,8 +1,8 @@
 use std::{any::Any, ffi::CString, slice};
 
-use libduckdb_sys::{duckdb_array_type_array_size, duckdb_array_vector_get_child};
+use libduckdb_sys::{duckdb_array_type_array_size, duckdb_array_vector_get_child, DuckDbString};
 
-use super::LogicalType;
+use super::LogicalTypeHandle;
 use crate::ffi::{
     duckdb_list_entry, duckdb_list_vector_get_child, duckdb_list_vector_get_size, duckdb_list_vector_reserve,
     duckdb_list_vector_set_size, duckdb_struct_type_child_count, duckdb_struct_type_child_name,
@@ -71,8 +71,8 @@ impl FlatVector {
     }
 
     /// Returns the logical type of the vector
-    pub fn logical_type(&self) -> LogicalType {
-        LogicalType::from(unsafe { duckdb_vector_get_column_type(self.ptr) })
+    pub fn logical_type(&self) -> LogicalTypeHandle {
+        unsafe { LogicalTypeHandle::new(duckdb_vector_get_column_type(self.ptr)) }
     }
 
     /// Set row as null
@@ -202,8 +202,8 @@ impl From<duckdb_vector> for ArrayVector {
 
 impl ArrayVector {
     /// Get the logical type of this ArrayVector.
-    pub fn logical_type(&self) -> LogicalType {
-        LogicalType::from(unsafe { duckdb_vector_get_column_type(self.ptr) })
+    pub fn logical_type(&self) -> LogicalTypeHandle {
+        unsafe { LogicalTypeHandle::new(duckdb_vector_get_column_type(self.ptr)) }
     }
 
     /// Returns the size of the array type.
@@ -259,8 +259,8 @@ impl StructVector {
     }
 
     /// Get the logical type of this struct vector.
-    pub fn logical_type(&self) -> LogicalType {
-        LogicalType::from(unsafe { duckdb_vector_get_column_type(self.ptr) })
+    pub fn logical_type(&self) -> LogicalTypeHandle {
+        unsafe { LogicalTypeHandle::new(duckdb_vector_get_column_type(self.ptr)) }
     }
 
     /// Get the name of the child by idx.