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Merge pull request #58 from Kerollmops/clean-up

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Clean up some database functions
This commit is contained in:
Clément Renault 2019-01-01 11:43:27 +01:00 committed by GitHub
commit 9dd68b4eaa
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1 changed files with 9 additions and 13 deletions
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22
src/database/mod.rs
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@ -38,29 +38,25 @@ where D: Deref<Target=DB>
fn retrieve_data_index<D>(snapshot: &Snapshot<D>) -> Result<Index, Box<Error>>
where D: Deref<Target=DB>
{
match snapshot.get(DATA_INDEX)? {
let index = match snapshot.get(DATA_INDEX)? {
Some(vector) => {
let bytes_len = vector.as_ref().len();
let bytes = Arc::new(vector.as_ref().to_vec());
Ok(Index::from_shared_bytes(bytes, 0, bytes_len)?)
let bytes = vector.as_ref().to_vec();
Index::from_bytes(bytes)?
},
None => Ok(Index::default()),
}
None => Index::default(),
};
Ok(index)
}
fn merge_indexes(key: &[u8], existing: Option<&[u8]>, operands: &mut MergeOperands) -> Vec<u8> {
assert_eq!(key, DATA_INDEX, "The merge operator only supports \"data-index\" merging");
let mut index: Option<Index> = None;
for bytes in existing.into_iter().chain(operands) {
let bytes_len = bytes.len();
let bytes = Arc::new(bytes.to_vec());
let operand = Index::from_shared_bytes(bytes, 0, bytes_len);
let operand = operand.expect("BUG: could not deserialize index");
let operand = Index::from_bytes(bytes.to_vec()).unwrap();
let merged = match index {
Some(ref index) => index.merge(&operand).expect("BUG: could not merge index"),
Some(ref index) => index.merge(&operand).unwrap(),
None => operand,
};