duckdb-extension-framework 0.2.0

Purely experimental DuckDB extension framework
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

use crate::duckly::{
    duckdb_bind_add_result_column, duckdb_bind_get_parameter, duckdb_bind_get_parameter_count,
    duckdb_bind_info, duckdb_bind_set_bind_data, duckdb_bind_set_error,
};
use crate::{as_string, LogicalType, Value};
use std::ffi::c_void;
use std::os::raw::c_char;

#[derive(Debug)]
pub struct BindInfo {
    ptr: *mut c_void,
}

impl BindInfo {
    pub fn add_result_column(&self, column_name: &str, column_type: LogicalType) {
        unsafe {
            duckdb_bind_add_result_column(self.ptr, as_string!(column_name), column_type.typ);
        }
    }
    pub fn set_error(&self, error: &str) {
        unsafe {
            duckdb_bind_set_error(self.ptr, as_string!(error));
        }
    }
    /// # Safety
    pub unsafe fn set_bind_data(
        &self,
        data: *mut c_void,
        free_function: Option<unsafe extern "C" fn(*mut c_void)>,
    ) {
        duckdb_bind_set_bind_data(self.ptr, data, free_function);
    }
    pub fn get_parameter_count(&self) -> u64 {
        unsafe { duckdb_bind_get_parameter_count(self.ptr) }
    }
    pub fn get_parameter(&self, param_index: u64) -> Value {
        unsafe { Value::from(duckdb_bind_get_parameter(self.ptr, param_index)) }
    }
}

impl From<duckdb_bind_info> for BindInfo {
    fn from(ptr: duckdb_bind_info) -> Self {
        Self { ptr }
    }
}