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use crate::column::ColumnIndex; use crate::error::Error; use crate::ext::ustr::UStr; use crate::mssql::{Mssql, MssqlArguments, MssqlColumn, MssqlTypeInfo}; use crate::statement::Statement; use crate::HashMap; use either::Either; use std::borrow::Cow; use std::sync::Arc; #[derive(Debug, Clone)] pub struct MssqlStatement<'q> { pub(crate) sql: Cow<'q, str>, pub(crate) metadata: Arc<MssqlStatementMetadata>, } #[derive(Debug, Default, Clone)] pub(crate) struct MssqlStatementMetadata { pub(crate) columns: Vec<MssqlColumn>, pub(crate) column_names: HashMap<UStr, usize>, } impl<'q> Statement<'q> for MssqlStatement<'q> { type Database = Mssql; fn to_owned(&self) -> MssqlStatement<'static> { MssqlStatement::<'static> { sql: Cow::Owned(self.sql.clone().into_owned()), metadata: self.metadata.clone(), } } fn sql(&self) -> &str { &self.sql } fn parameters(&self) -> Option<Either<&[MssqlTypeInfo], usize>> { None } fn columns(&self) -> &[MssqlColumn] { &self.metadata.columns } impl_statement_query!(MssqlArguments); } impl ColumnIndex<MssqlStatement<'_>> for &'_ str { fn index(&self, statement: &MssqlStatement<'_>) -> Result<usize, Error> { statement .metadata .column_names .get(*self) .ok_or_else(|| Error::ColumnNotFound((*self).into())) .map(|v| *v) } } #[cfg(feature = "any")] impl<'q> From<MssqlStatement<'q>> for crate::any::AnyStatement<'q> { #[inline] fn from(statement: MssqlStatement<'q>) -> Self { crate::any::AnyStatement::<'q> { columns: statement .metadata .columns .iter() .map(|col| col.clone().into()) .collect(), column_names: std::sync::Arc::new(statement.metadata.column_names.clone()), parameters: None, sql: statement.sql, } } }