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use lmdb::{
Database,
WriteFlags,
};
use std::marker::PhantomData;
use crate::error::StoreError;
use crate::readwrite::{
Readable,
Writer,
};
use crate::value::Value;
use crate::store::multi::{
Iter,
MultiStore,
};
use crate::store::integer::{
Key,
PrimitiveInt,
};
pub struct MultiIntegerStore<K>
where
K: PrimitiveInt,
{
inner: MultiStore,
phantom: PhantomData<K>,
}
impl<K> MultiIntegerStore<K>
where
K: PrimitiveInt,
{
pub(crate) fn new(db: Database) -> MultiIntegerStore<K> {
MultiIntegerStore {
inner: MultiStore::new(db),
phantom: PhantomData,
}
}
pub fn get<'env, T: Readable>(&self, reader: &'env T, k: K) -> Result<Iter<'env>, StoreError> {
self.inner.get(reader, Key::new(&k)?)
}
pub fn get_first<'env, T: Readable>(&self, reader: &'env T, k: K) -> Result<Option<Value<'env>>, StoreError> {
self.inner.get_first(reader, Key::new(&k)?)
}
pub fn put(&self, writer: &mut Writer, k: K, v: &Value) -> Result<(), StoreError> {
self.inner.put(writer, Key::new(&k)?, v)
}
pub fn put_with_flags(&self, writer: &mut Writer, k: K, v: &Value, flags: WriteFlags) -> Result<(), StoreError> {
self.inner.put_with_flags(writer, Key::new(&k)?, v, flags)
}
pub fn delete_all(&self, writer: &mut Writer, k: K) -> Result<(), StoreError> {
self.inner.delete_all(writer, Key::new(&k)?)
}
pub fn delete(&self, writer: &mut Writer, k: K, v: &Value) -> Result<(), StoreError> {
self.inner.delete(writer, Key::new(&k)?, v)
}
pub fn clear(&self, writer: &mut Writer) -> Result<(), StoreError> {
self.inner.clear(writer)
}
}
#[cfg(test)]
mod tests {
extern crate tempfile;
use self::tempfile::Builder;
use std::fs;
use super::*;
use crate::*;
#[test]
fn test_integer_keys() {
let root = Builder::new().prefix("test_integer_keys").tempdir().expect("tempdir");
fs::create_dir_all(root.path()).expect("dir created");
let k = Rkv::new(root.path()).expect("new succeeded");
let s = k.open_multi_integer("s", StoreOptions::create()).expect("open");
macro_rules! test_integer_keys {
($type:ty, $key:expr) => {{
let mut writer = k.write().expect("writer");
s.put(&mut writer, $key, &Value::Str("hello!")).expect("write");
assert_eq!(s.get_first(&writer, $key).expect("read"), Some(Value::Str("hello!")));
writer.commit().expect("committed");
let reader = k.read().expect("reader");
assert_eq!(s.get_first(&reader, $key).expect("read"), Some(Value::Str("hello!")));
}};
}
test_integer_keys!(u32, std::u32::MIN);
test_integer_keys!(u32, std::u32::MAX);
}
#[test]
fn test_clear() {
let root = Builder::new().prefix("test_multi_integer_clear").tempdir().expect("tempdir");
fs::create_dir_all(root.path()).expect("dir created");
let k = Rkv::new(root.path()).expect("new succeeded");
let s = k.open_multi_integer("s", StoreOptions::create()).expect("open");
{
let mut writer = k.write().expect("writer");
s.put(&mut writer, 1, &Value::Str("hello!")).expect("write");
s.put(&mut writer, 1, &Value::Str("hello1!")).expect("write");
s.put(&mut writer, 2, &Value::Str("hello!")).expect("write");
writer.commit().expect("committed");
}
{
let mut writer = k.write().expect("writer");
s.clear(&mut writer).expect("cleared");
writer.commit().expect("committed");
let reader = k.read().expect("reader");
assert_eq!(s.get_first(&reader, 1).expect("read"), None);
assert_eq!(s.get_first(&reader, 2).expect("read"), None);
}
}
}