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a little database cleanup (#5394)

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Darren Schroeder 2022-05-01 07:44:29 -05:00 committed by GitHub
parent 8dc199d817
commit 80d57d70cd
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 7 additions and 69 deletions
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4
crates/nu-command/src/database/mod.rs
View File

@ -6,8 +6,8 @@ pub use commands::add_commands_decls;
pub use expressions::add_expression_decls;
use nu_protocol::engine::StateWorkingSet;
pub use values::{
convert_sqlite_row_to_nu_value, convert_sqlite_value_to_nu_value, open_and_read_sqlite_db,
open_connection_in_memory, read_sqlite_db, SQLiteDatabase,
convert_sqlite_row_to_nu_value, convert_sqlite_value_to_nu_value, open_connection_in_memory,
SQLiteDatabase,
};
pub fn add_database_decls(working_set: &mut StateWorkingSet) {

4
crates/nu-command/src/database/values/mod.rs
View File

@ -3,6 +3,6 @@ pub mod dsl;
pub mod sqlite;
pub use sqlite::{
convert_sqlite_row_to_nu_value, convert_sqlite_value_to_nu_value, open_and_read_sqlite_db,
open_connection_in_memory, read_sqlite_db, SQLiteDatabase,
convert_sqlite_row_to_nu_value, convert_sqlite_value_to_nu_value, open_connection_in_memory,
SQLiteDatabase,
};

68
crates/nu-command/src/database/values/sqlite.rs
View File

@ -541,7 +541,7 @@ mod test {
#[test]
fn can_read_empty_db() {
let db = Connection::open_in_memory().unwrap();
let db = open_connection_in_memory().unwrap();
let converted_db = read_entire_sqlite_db(db, Span::test_data()).unwrap();
let expected = Value::Record {
@ -555,7 +555,7 @@ mod test {
#[test]
fn can_read_empty_table() {
let db = Connection::open_in_memory().unwrap();
let db = open_connection_in_memory().unwrap();
db.execute(
"CREATE TABLE person (
@ -583,7 +583,7 @@ mod test {
#[test]
fn can_read_null_and_non_null_data() {
let span = Span::test_data();
let db = Connection::open_in_memory().unwrap();
let db = open_connection_in_memory().unwrap();
db.execute(
"CREATE TABLE item (
@ -632,7 +632,6 @@ mod test {
}
}
//----------------------------------------------------
pub fn open_connection_in_memory() -> Result<Connection, ShellError> {
let db = match Connection::open_in_memory() {
Ok(conn) => conn,
@ -649,64 +648,3 @@ pub fn open_connection_in_memory() -> Result<Connection, ShellError> {
Ok(db)
}
pub fn open_and_read_sqlite_db(
path: &Path,
call_span: Span,
) -> Result<Value, nu_protocol::ShellError> {
let path = path.to_string_lossy().to_string();
match Connection::open(path) {
Ok(conn) => match read_sqlite_db(conn, call_span) {
Ok(data) => Ok(data),
Err(err) => Err(ShellError::GenericError(
"Failed to read from SQLite database".into(),
err.to_string(),
Some(call_span),
None,
Vec::new(),
)),
},
Err(err) => Err(ShellError::GenericError(
"Failed to open SQLite database".into(),
err.to_string(),
Some(call_span),
None,
Vec::new(),
)),
}
}
pub fn read_sqlite_db(conn: Connection, call_span: Span) -> Result<Value, rusqlite::Error> {
let mut table_names: Vec<String> = Vec::new();
let mut tables: Vec<Value> = Vec::new();
let mut get_table_names =
conn.prepare("SELECT name from sqlite_master where type = 'table'")?;
let rows = get_table_names.query_map([], |row| row.get(0))?;
for row in rows {
let table_name: String = row?;
table_names.push(table_name.clone());
let mut rows = Vec::new();
let mut table_stmt = conn.prepare(&format!("select * from [{}]", table_name))?;
let mut table_rows = table_stmt.query([])?;
while let Some(table_row) = table_rows.next()? {
rows.push(convert_sqlite_row_to_nu_value(table_row, call_span))
}
let table_record = Value::List {
vals: rows,
span: call_span,
};
tables.push(table_record);
}
Ok(Value::Record {
cols: table_names,
vals: tables,
span: call_span,
})
}