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use {
super::types::{ColumnInfo, ComplexTableName},
crate::{result::Result, Column, StorageInner},
serde::Serialize,
thiserror::Error as ThisError,
};
#[derive(ThisError, Serialize, Debug, PartialEq)]
pub enum FetchError {
#[error("table not found: {0}")]
TableNotFound(String),
}
pub async fn fetch_columns(
storage: &StorageInner,
table: ComplexTableName,
) -> Result<Vec<ColumnInfo>> {
let schema = storage
.fetch_schema(&table.name)
.await?
.ok_or_else(|| FetchError::TableNotFound(table.name.clone()))?;
let columns = schema
.column_defs
.iter()
.map(|Column { name, .. }| {
let index = schema
.indexes
.iter()
.find_map(|index| (&index.column == name).then(|| index.name.clone()));
ColumnInfo {
table: table.clone(),
name: name.clone(),
index,
}
})
.collect();
Ok(columns)
}