toasty_core/error/
read_only_transaction.rs

1use super::Error;
2
3/// Error when a write operation is attempted inside a read-only transaction.
4///
5/// This maps to database-specific errors such as PostgreSQL SQLSTATE 25006
6/// or MySQL error 1792.
7#[derive(Debug)]
8pub(super) struct ReadOnlyTransaction {
9    message: Box<str>,
10}
11
12impl std::error::Error for ReadOnlyTransaction {}
13
14impl core::fmt::Display for ReadOnlyTransaction {
15    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
16        write!(f, "read-only transaction: {}", self.message)
17    }
18}
19
20impl Error {
21    /// Creates a read-only transaction error.
22    ///
23    /// Returned when a write operation is attempted inside a read-only
24    /// transaction (e.g. PostgreSQL SQLSTATE 25006, MySQL error 1792).
25    ///
26    /// # Examples
27    ///
28    /// ```
29    /// use toasty_core::Error;
30    ///
31    /// let err = Error::read_only_transaction("INSERT not allowed");
32    /// assert!(err.is_read_only_transaction());
33    /// assert_eq!(
34    ///     err.to_string(),
35    ///     "read-only transaction: INSERT not allowed"
36    /// );
37    /// ```
38    pub fn read_only_transaction(message: impl Into<String>) -> Error {
39        Error::from(super::ErrorKind::ReadOnlyTransaction(ReadOnlyTransaction {
40            message: message.into().into(),
41        }))
42    }
43
44    /// Returns `true` if this error is a read-only transaction error.
45    pub fn is_read_only_transaction(&self) -> bool {
46        matches!(self.kind(), super::ErrorKind::ReadOnlyTransaction(_))
47    }
48}
toasty_core/error/read_only_transaction.rs

toasty_core/error/
read_only_transaction.rs
