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This commit is contained in:
gwenn
2018-08-11 12:48:21 +02:00
parent 57df0ac3d5
commit c925d1aa97
26 changed files with 1214 additions and 970 deletions
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268
src/statement.rs
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@@ -1,11 +1,13 @@
use std::{convert, fmt, mem, ptr, result, str};
use std::ffi::CStr;
use std::os::raw::{c_char, c_int, c_void};
use std::slice::from_raw_parts;
use std::{convert, fmt, mem, ptr, result, str};
use super::ffi;
use super::{Connection, RawStatement, Result, Error, ValueRef, Row, Rows, AndThenRows, MappedRows};
use super::str_to_cstring;
use super::{
AndThenRows, Connection, Error, MappedRows, RawStatement, Result, Row, Rows, ValueRef,
};
use types::{ToSql, ToSqlOutput};
/// A prepared statement.
@@ -211,7 +213,8 @@ impl<'conn> Statement<'conn> {
///
/// Will return `Err` if binding parameters fails.
pub fn query_map<'a, T, F>(&'a mut self, params: &[&ToSql], f: F) -> Result<MappedRows<'a, F>>
where F: FnMut(&Row) -> T
where
F: FnMut(&Row) -> T,
{
let rows = self.query(params)?;
Ok(MappedRows::new(rows, f))
@@ -243,11 +246,13 @@ impl<'conn> Statement<'conn> {
/// ## Failure
///
/// Will return `Err` if binding parameters fails.
pub fn query_map_named<'a, T, F>(&'a mut self,
params: &[(&str, &ToSql)],
f: F)
-> Result<MappedRows<'a, F>>
where F: FnMut(&Row) -> T
pub fn query_map_named<'a, T, F>(
&'a mut self,
params: &[(&str, &ToSql)],
f: F,
) -> Result<MappedRows<'a, F>>
where
F: FnMut(&Row) -> T,
{
let rows = self.query_named(params)?;
Ok(MappedRows::new(rows, f))
@@ -260,12 +265,14 @@ impl<'conn> Statement<'conn> {
/// # Failure
///
/// Will return `Err` if binding parameters fails.
pub fn query_and_then<'a, T, E, F>(&'a mut self,
params: &[&ToSql],
f: F)
-> Result<AndThenRows<'a, F>>
where E: convert::From<Error>,
F: FnMut(&Row) -> result::Result<T, E>
pub fn query_and_then<'a, T, E, F>(
&'a mut self,
params: &[&ToSql],
f: F,
) -> Result<AndThenRows<'a, F>>
where
E: convert::From<Error>,
F: FnMut(&Row) -> result::Result<T, E>,
{
let rows = self.query(params)?;
Ok(AndThenRows::new(rows, f))
@@ -306,12 +313,14 @@ impl<'conn> Statement<'conn> {
/// ## Failure
///
/// Will return `Err` if binding parameters fails.
pub fn query_and_then_named<'a, T, E, F>(&'a mut self,
params: &[(&str, &ToSql)],
f: F)
-> Result<AndThenRows<'a, F>>
where E: convert::From<Error>,
F: FnMut(&Row) -> result::Result<T, E>
pub fn query_and_then_named<'a, T, E, F>(
&'a mut self,
params: &[(&str, &ToSql)],
f: F,
) -> Result<AndThenRows<'a, F>>
where
E: convert::From<Error>,
F: FnMut(&Row) -> result::Result<T, E>,
{
let rows = self.query_named(params)?;
Ok(AndThenRows::new(rows, f))
@@ -338,7 +347,8 @@ impl<'conn> Statement<'conn> {
///
/// Will return `Err` if the underlying SQLite call fails.
pub fn query_row<T, F>(&mut self, params: &[&ToSql], f: F) -> Result<T>
where F: FnOnce(&Row) -> T
where
F: FnOnce(&Row) -> T,
{
let mut rows = try!(self.query(params));
@@ -369,10 +379,13 @@ impl<'conn> Statement<'conn> {
}
fn bind_parameters(&mut self, params: &[&ToSql]) -> Result<()> {
assert_eq!(params.len(), self.stmt.bind_parameter_count(),
"incorrect number of parameters to query(): expected {}, got {}",
self.stmt.bind_parameter_count(),
params.len());
assert_eq!(
params.len(),
self.stmt.bind_parameter_count(),
"incorrect number of parameters to query(): expected {}, got {}",
self.stmt.bind_parameter_count(),
params.len()
);
for (i, p) in params.iter().enumerate() {
try!(self.bind_parameter(*p, i + 1));
@@ -402,20 +415,16 @@ impl<'conn> Statement<'conn> {
#[cfg(feature = "blob")]
ToSqlOutput::ZeroBlob(len) => {
return self.conn
.decode_result(unsafe { ffi::sqlite3_bind_zeroblob(ptr, col as c_int, len) });
return self
.conn
.decode_result(unsafe { ffi::sqlite3_bind_zeroblob(ptr, col as c_int, len) });
}
};
self.conn
.decode_result(match value {
ValueRef::Null => unsafe { ffi::sqlite3_bind_null(ptr, col as c_int) },
ValueRef::Integer(i) => unsafe {
ffi::sqlite3_bind_int64(ptr, col as c_int, i)
},
ValueRef::Real(r) => unsafe {
ffi::sqlite3_bind_double(ptr, col as c_int, r)
},
ValueRef::Text(s) => unsafe {
self.conn.decode_result(match value {
ValueRef::Null => unsafe { ffi::sqlite3_bind_null(ptr, col as c_int) },
ValueRef::Integer(i) => unsafe { ffi::sqlite3_bind_int64(ptr, col as c_int, i) },
ValueRef::Real(r) => unsafe { ffi::sqlite3_bind_double(ptr, col as c_int, r) },
ValueRef::Text(s) => unsafe {
let length = s.len();
if length > ::std::i32::MAX as usize {
ffi::SQLITE_TOOBIG
@@ -426,24 +435,32 @@ impl<'conn> Statement<'conn> {
} else {
ffi::SQLITE_STATIC()
};
ffi::sqlite3_bind_text(ptr, col as c_int, c_str.as_ptr(), length as c_int, destructor)
ffi::sqlite3_bind_text(
ptr,
col as c_int,
c_str.as_ptr(),
length as c_int,
destructor,
)
}
},
ValueRef::Blob(b) => unsafe {
ValueRef::Blob(b) => unsafe {
let length = b.len();
if length > ::std::i32::MAX as usize {
ffi::SQLITE_TOOBIG
} else if length == 0 {
ffi::sqlite3_bind_zeroblob(ptr, col as c_int, 0)
} else {
ffi::sqlite3_bind_blob(ptr,
col as c_int,
b.as_ptr() as *const c_void,
length as c_int,
ffi::SQLITE_TRANSIENT())
ffi::sqlite3_bind_blob(
ptr,
col as c_int,
b.as_ptr() as *const c_void,
length as c_int,
ffi::SQLITE_TRANSIENT(),
)
}
},
})
})
}
fn execute_with_bound_parameters(&mut self) -> Result<usize> {
@@ -485,7 +502,9 @@ impl<'conn> Statement<'conn> {
#[cfg(feature = "bundled")]
pub fn expanded_sql(&self) -> Option<&str> {
unsafe {
self.stmt.expanded_sql().map(|s| str::from_utf8_unchecked(s.to_bytes()))
self.stmt
.expanded_sql()
.map(|s| str::from_utf8_unchecked(s.to_bytes()))
}
}
}
@@ -518,10 +537,7 @@ impl<'conn> Drop for Statement<'conn> {
impl<'conn> Statement<'conn> {
pub(crate) fn new(conn: &Connection, stmt: RawStatement) -> Statement {
Statement {
conn,
stmt,
}
Statement { conn, stmt }
}
pub(crate) fn value_ref(&self, col: usize) -> ValueRef {
@@ -532,30 +548,42 @@ impl<'conn> Statement<'conn> {
ffi::SQLITE_INTEGER => {
ValueRef::Integer(unsafe { ffi::sqlite3_column_int64(raw, col as c_int) })
}
ffi::SQLITE_FLOAT => ValueRef::Real(unsafe { ffi::sqlite3_column_double(raw, col as c_int) }),
ffi::SQLITE_FLOAT => {
ValueRef::Real(unsafe { ffi::sqlite3_column_double(raw, col as c_int) })
}
ffi::SQLITE_TEXT => {
let s = unsafe {
let text = ffi::sqlite3_column_text(raw, col as c_int);
assert!(!text.is_null(),
"unexpected SQLITE_TEXT column type with NULL data");
assert!(
!text.is_null(),
"unexpected SQLITE_TEXT column type with NULL data"
);
CStr::from_ptr(text as *const c_char)
};
// sqlite3_column_text returns UTF8 data, so our unwrap here should be fine.
let s = s.to_str()
let s = s
.to_str()
.expect("sqlite3_column_text returned invalid UTF-8");
ValueRef::Text(s)
}
ffi::SQLITE_BLOB => {
let (blob, len) = unsafe {
(ffi::sqlite3_column_blob(raw, col as c_int), ffi::sqlite3_column_bytes(raw, col as c_int))
(
ffi::sqlite3_column_blob(raw, col as c_int),
ffi::sqlite3_column_bytes(raw, col as c_int),
)
};
assert!(len >= 0,
"unexpected negative return from sqlite3_column_bytes");
assert!(
len >= 0,
"unexpected negative return from sqlite3_column_bytes"
);
if len > 0 {
assert!(!blob.is_null(),
"unexpected SQLITE_BLOB column type with NULL data");
assert!(
!blob.is_null(),
"unexpected SQLITE_BLOB column type with NULL data"
);
ValueRef::Blob(unsafe { from_raw_parts(blob as *const u8, len as usize) })
} else {
// The return value from sqlite3_column_blob() for a zero-length BLOB
@@ -589,18 +617,25 @@ mod test {
let db = Connection::open_in_memory().unwrap();
db.execute_batch("CREATE TABLE foo(x INTEGER)").unwrap();
assert_eq!(db.execute_named("INSERT INTO foo(x) VALUES (:x)", &[(":x", &1i32)])
.unwrap(),
1);
assert_eq!(db.execute_named("INSERT INTO foo(x) VALUES (:x)", &[(":x", &2i32)])
.unwrap(),
1);
assert_eq!(
db.execute_named("INSERT INTO foo(x) VALUES (:x)", &[(":x", &1i32)])
.unwrap(),
1
);
assert_eq!(
db.execute_named("INSERT INTO foo(x) VALUES (:x)", &[(":x", &2i32)])
.unwrap(),
1
);
assert_eq!(3i32,
db.query_row_named::<i32, _>("SELECT SUM(x) FROM foo WHERE x > :x",
&[(":x", &0i32)],
|r| r.get(0))
.unwrap());
assert_eq!(
3i32,
db.query_row_named::<i32, _>(
"SELECT SUM(x) FROM foo WHERE x > :x",
&[(":x", &0i32)],
|r| r.get(0)
).unwrap()
);
}
#[test]
@@ -610,15 +645,19 @@ mod test {
INTEGER)";
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("INSERT INTO test (name) VALUES (:name)")
let mut stmt = db
.prepare("INSERT INTO test (name) VALUES (:name)")
.unwrap();
stmt.execute_named(&[(":name", &"one")]).unwrap();
assert_eq!(1i32,
db.query_row_named::<i32, _>("SELECT COUNT(*) FROM test WHERE name = :name",
&[(":name", &"one")],
|r| r.get(0))
.unwrap());
assert_eq!(
1i32,
db.query_row_named::<i32, _>(
"SELECT COUNT(*) FROM test WHERE name = :name",
&[(":name", &"one")],
|r| r.get(0)
).unwrap()
);
}
#[test]
@@ -630,7 +669,8 @@ mod test {
"#;
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("SELECT id FROM test where name = :name")
let mut stmt = db
.prepare("SELECT id FROM test where name = :name")
.unwrap();
let mut rows = stmt.query_named(&[(":name", &"one")]).unwrap();
@@ -647,13 +687,14 @@ mod test {
"#;
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("SELECT id FROM test where name = :name")
let mut stmt = db
.prepare("SELECT id FROM test where name = :name")
.unwrap();
let mut rows = stmt.query_map_named(&[(":name", &"one")], |row| {
let mut rows = stmt
.query_map_named(&[(":name", &"one")], |row| {
let id: i32 = row.get(0);
2 * id
})
.unwrap();
}).unwrap();
let doubled_id: i32 = rows.next().unwrap().unwrap();
assert_eq!(2, doubled_id);
@@ -661,7 +702,6 @@ mod test {
#[test]
fn test_query_and_then_named() {
let db = Connection::open_in_memory().unwrap();
let sql = r#"
CREATE TABLE test (id INTEGER PRIMARY KEY NOT NULL, name TEXT NOT NULL, flag INTEGER);
@@ -670,17 +710,18 @@ mod test {
"#;
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("SELECT id FROM test where name = :name ORDER BY id ASC")
let mut stmt = db
.prepare("SELECT id FROM test where name = :name ORDER BY id ASC")
.unwrap();
let mut rows = stmt.query_and_then_named(&[(":name", &"one")], |row| {
let mut rows = stmt
.query_and_then_named(&[(":name", &"one")], |row| {
let id: i32 = row.get(0);
if id == 1 {
Ok(id)
} else {
Err(Error::SqliteSingleThreadedMode)
}
})
.unwrap();
}).unwrap();
// first row should be Ok
let doubled_id: i32 = rows.next().unwrap().unwrap();
@@ -700,13 +741,14 @@ mod test {
let sql = "CREATE TABLE test (x TEXT, y TEXT)";
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("INSERT INTO test (x, y) VALUES (:x, :y)")
let mut stmt = db
.prepare("INSERT INTO test (x, y) VALUES (:x, :y)")
.unwrap();
stmt.execute_named(&[(":x", &"one")]).unwrap();
let result: Option<String> =
db.query_row("SELECT y FROM test WHERE x = 'one'", &[], |row| row.get(0))
.unwrap();
let result: Option<String> = db
.query_row("SELECT y FROM test WHERE x = 'one'", &[], |row| row.get(0))
.unwrap();
assert!(result.is_none());
}
@@ -716,14 +758,15 @@ mod test {
let sql = "CREATE TABLE test (x TEXT, y TEXT)";
db.execute_batch(sql).unwrap();
let mut stmt = db.prepare("INSERT INTO test (x, y) VALUES (:x, :y)")
let mut stmt = db
.prepare("INSERT INTO test (x, y) VALUES (:x, :y)")
.unwrap();
stmt.execute_named(&[(":x", &"one")]).unwrap();
stmt.execute_named(&[(":y", &"two")]).unwrap();
let result: String =
db.query_row("SELECT x FROM test WHERE y = 'two'", &[], |row| row.get(0))
.unwrap();
let result: String = db
.query_row("SELECT x FROM test WHERE y = 'two'", &[], |row| row.get(0))
.unwrap();
assert_eq!(result, "one");
}
@@ -732,7 +775,8 @@ mod test {
let db = Connection::open_in_memory().unwrap();
db.execute_batch("CREATE TABLE foo(x INTEGER UNIQUE)")
.unwrap();
let mut stmt = db.prepare("INSERT OR IGNORE INTO foo (x) VALUES (?)")
let mut stmt = db
.prepare("INSERT OR IGNORE INTO foo (x) VALUES (?)")
.unwrap();
assert_eq!(stmt.insert(&[&1i32]).unwrap(), 1);
assert_eq!(stmt.insert(&[&2i32]).unwrap(), 2);
@@ -740,7 +784,8 @@ mod test {
Error::StatementChangedRows(0) => (),
err => panic!("Unexpected error {}", err),
}
let mut multi = db.prepare("INSERT INTO foo (x) SELECT 3 UNION ALL SELECT 4")
let mut multi = db
.prepare("INSERT INTO foo (x) SELECT 3 UNION ALL SELECT 4")
.unwrap();
match multi.insert(&[]).unwrap_err() {
Error::StatementChangedRows(2) => (),
@@ -752,22 +797,27 @@ mod test {
fn test_insert_different_tables() {
// Test for https://github.com/jgallagher/rusqlite/issues/171
let db = Connection::open_in_memory().unwrap();
db.execute_batch(r"
db.execute_batch(
r"
CREATE TABLE foo(x INTEGER);
CREATE TABLE bar(x INTEGER);
")
.unwrap();
",
).unwrap();
assert_eq!(db.prepare("INSERT INTO foo VALUES (10)")
.unwrap()
.insert(&[])
.unwrap(),
1);
assert_eq!(db.prepare("INSERT INTO bar VALUES (10)")
.unwrap()
.insert(&[])
.unwrap(),
1);
assert_eq!(
db.prepare("INSERT INTO foo VALUES (10)")
.unwrap()
.insert(&[])
.unwrap(),
1
);
assert_eq!(
db.prepare("INSERT INTO bar VALUES (10)")
.unwrap()
.insert(&[])
.unwrap(),
1
);
}
#[test]