Removes unused StrLookup::contains_str

lib/oxigraph/src/sparql/dataset.rs

@@ -176,10 +176,6 @@ impl StrLookup for DatasetView {
             self.reader.get_str(key)?
         })
     }
-
-    fn contains_str(&self, key: &StrHash) -> Result<bool, StorageError> {
-        Ok(self.extra.borrow().contains_key(key) || self.reader.contains_str(key)?)
-    }
 }
 
 struct EncodedDatasetSpec {

lib/oxigraph/src/storage/binary_encoder.rs

@@ -650,10 +650,6 @@ mod tests {
         fn get_str(&self, key: &StrHash) -> Result<Option<String>, StorageError> {
             Ok(self.id2str.borrow().get(key).cloned())
         }
-
-        fn contains_str(&self, key: &StrHash) -> Result<bool, StorageError> {
-            Ok(self.id2str.borrow().contains_key(key))
-        }
     }
 
     impl MemoryStrStore {

lib/oxigraph/src/storage/mod.rs

@@ -864,10 +864,6 @@ impl StrLookup for StorageReader {
     fn get_str(&self, key: &StrHash) -> Result<Option<String>, StorageError> {
         self.get_str(key)
     }
-
-    fn contains_str(&self, key: &StrHash) -> Result<bool, StorageError> {
-        self.contains_str(key)
-    }
 }
 
 pub struct StorageWriter<'a> {

lib/oxigraph/src/storage/numeric_encoder.rs

@@ -701,8 +701,6 @@ impl From<QuadRef<'_>> for EncodedQuad {
 
 pub trait StrLookup {
     fn get_str(&self, key: &StrHash) -> Result<Option<String>, StorageError>;
-
-    fn contains_str(&self, key: &StrHash) -> Result<bool, StorageError>;
 }
 
 pub fn insert_term<F: FnMut(&StrHash, &str) -> Result<(), StorageError>>(