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add abstract fallbacks for kv batch methods.

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk 2024-03-19 04:31:57 -07:00 • committed by June
parent 10e2eb5e08
commit af605a03b7
1 changed files with 20 additions and 5 deletions
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25
src/database/abstraction.rs
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@ -39,20 +39,35 @@ pub(crate) trait KvTree: Send + Sync {
}
fn insert(&self, key: &[u8], value: &[u8]) -> Result<()>;
fn insert_batch(&self, iter: &mut dyn Iterator<Item = (Vec<u8>, Vec<u8>)>) -> Result<()>;
fn insert_batch(&self, iter: &mut dyn Iterator<Item = (Vec<u8>, Vec<u8>)>) -> Result<()> {
for (key, value) in iter {
self.insert(&key, &value)?;
}
Ok(())
}
fn remove(&self, key: &[u8]) -> Result<()>;
fn remove_batch(&self, iter: &mut dyn Iterator<Item = Vec<u8>>) -> Result<()> {
for key in iter {
self.remove(&key)?;
}
#[allow(dead_code)]
#[cfg(feature = "rocksdb")]
fn remove_batch(&self, _iter: &mut dyn Iterator<Item = Vec<u8>>) -> Result<()> { unimplemented!() }
Ok(())
}
fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (Vec<u8>, Vec<u8>)> + 'a>;
fn iter_from<'a>(&'a self, from: &[u8], backwards: bool) -> Box<dyn Iterator<Item = (Vec<u8>, Vec<u8>)> + 'a>;
fn increment(&self, key: &[u8]) -> Result<Vec<u8>>;
fn increment_batch(&self, iter: &mut dyn Iterator<Item = Vec<u8>>) -> Result<()>;
fn increment_batch(&self, iter: &mut dyn Iterator<Item = Vec<u8>>) -> Result<()> {
for key in iter {
self.increment(&key)?;
}
Ok(())
}
fn scan_prefix<'a>(&'a self, prefix: Vec<u8>) -> Box<dyn Iterator<Item = (Vec<u8>, Vec<u8>)> + 'a>;