sqlx_rqlite/connection/
executor.rs

1use crate::error::RqliteError;
2use crate::type_info::DataType;
3use crate::RqliteColumn;
4use crate::{
5    Rqlite, RqliteConnection, RqliteQueryResult, RqliteRow, RqliteStatement, RqliteTypeInfo,
6    RqliteValue,
7};
8use futures_core::future::BoxFuture;
9use futures_core::stream::BoxStream;
10use futures_util::pin_mut;
11use futures_util::TryStreamExt;
12use sqlx_core::describe::Describe;
13use sqlx_core::error::Error;
14use sqlx_core::executor::{Execute, Executor};
15use sqlx_core::ext::ustr::UStr;
16use sqlx_core::try_stream;
17use sqlx_core::Either;
18
19impl<'c> Executor<'c> for &'c mut RqliteConnection {
20    type Database = Rqlite;
21
22    fn fetch_many<'e, 'q: 'e, E: 'q>(
23        self,
24        mut query: E,
25    ) -> BoxStream<'e, Result<Either<RqliteQueryResult, RqliteRow>, Error>>
26    where
27        'c: 'e,
28        E: Execute<'q, Self::Database>,
29    {
30        let sql = query.sql();
31        let arguments = query.take_arguments();
32        //let persistent = query.persistent() && arguments.is_some();
33
34        //let args = Vec::with_capacity(arguments.len());
35
36        Box::pin(try_stream! {
37          let cursor = self.inner.execute(sql, match arguments {
38            Some(arguments)=>arguments.values,
39            _=>vec![],
40          }).await;
41          match cursor {
42            Ok(cursor)=> {
43              //println!("{}:({})",file!(),line!());
44
45              pin_mut!(cursor);
46
47              while let Some(row) = cursor.next_row() {
48                let size = row.column_count();
49                let mut values = Vec::with_capacity(size);
50                let mut columns = Vec::with_capacity(size);
51                //let mut column_names = Vec::with_capacity(size);
52                  for (i,value) in row.row.into_iter().enumerate() {
53                    values.push(RqliteValue::new(value,RqliteTypeInfo(DataType::Null)));
54                    columns.push(RqliteColumn{
55                      name : UStr::from(""),
56                      ordinal: i,
57                      type_info: RqliteTypeInfo(DataType::Null),
58                    });
59                  }
60                  let row=Either::Right(RqliteRow {
61                    values: values.into_boxed_slice(),
62                    columns: columns.into(),
63                    column_names : Default::default(),
64                  });
65                  r#yield!(row);
66              }
67              Ok(())
68            }
69            Err(err)=> {
70              Err(RqliteError{
71                inner: err,
72              }.into())
73            }
74          }
75        })
76    }
77
78    fn fetch_optional<'e, 'q: 'e, E: 'q>(
79        self,
80        query: E,
81    ) -> BoxFuture<'e, Result<Option<RqliteRow>, Error>>
82    where
83        'c: 'e,
84        E: Execute<'q, Self::Database>,
85    {
86        let mut s = self.fetch_many(query);
87
88        Box::pin(async move {
89            while let Some(v) = s.try_next().await? {
90                if let Either::Right(r) = v {
91                    return Ok(Some(r));
92                }
93            }
94
95            Ok(None)
96        })
97    }
98
99    fn prepare_with<'e, 'q: 'e>(
100        self,
101        _sql: &'q str,
102        _parameters: &[RqliteTypeInfo],
103    ) -> BoxFuture<'e, Result<RqliteStatement<'q>, Error>>
104    where
105        'c: 'e,
106    {
107        Box::pin(async {
108            Err(Error::Io(std::io::Error::new(
109                std::io::ErrorKind::Other,
110                "prepare_with not supported",
111            )))
112        })
113    }
114    #[doc(hidden)]
115    fn describe<'e, 'q: 'e>(self, _sql: &'q str) -> BoxFuture<'e, Result<Describe<Rqlite>, Error>>
116    where
117        'c: 'e,
118    {
119        Box::pin(async {
120            Err(Error::Io(std::io::Error::new(
121                std::io::ErrorKind::Other,
122                "describe not supported",
123            )))
124        })
125    }
126}
sqlx_rqlite/connection/executor.rs

sqlx_rqlite/connection/
executor.rs
