tari_common_sqlite 5.6.0-pre.1

// Copyright 2021. The Tari Project
//
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// following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
// disclaimer.
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// following disclaimer in the documentation and/or other materials provided with the distribution.
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// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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use diesel::{QueryResult, result::Error as DieselError};

pub trait ExpectedRowsExtension {
    fn num_rows_affected_or_not_found(self, num_rows: usize) -> Result<usize, DieselError>;
}

impl ExpectedRowsExtension for QueryResult<usize> {
    fn num_rows_affected_or_not_found(self, num_rows: usize) -> Result<usize, DieselError> {
        match self {
            Ok(s) => {
                if s == num_rows {
                    Ok(s)
                } else {
                    Err(DieselError::NotFound)
                }
            },
            Err(e) => Err(e),
        }
    }
}