Add the remainder of sqlite/query.rs functions to the data API.

zcash_client_backend/src/data_api/mod.rs

@@ -61,6 +61,8 @@ pub trait DBOps {
         id_note: Self::NoteId,
     ) -> Result<Option<String>, Self::Error>;
 
+    fn get_sent_memo_as_utf8(&self, id_note: Self::NoteId) -> Result<Option<String>, Self::Error>;
+
     fn get_extended_full_viewing_keys<P: consensus::Parameters>(
         &self,
         params: &P,

zcash_client_sqlite/src/lib.rs

@@ -129,6 +129,10 @@ impl DBOps for DataConnection {
         query::get_received_memo_as_utf8(self, id_note)
     }
 
+    fn get_sent_memo_as_utf8(&self, id_note: Self::NoteId) -> Result<Option<String>, Self::Error> {
+        query::get_sent_memo_as_utf8(self, id_note)
+    }
+
     fn get_extended_full_viewing_keys<P: consensus::Parameters>(
         &self,
         params: &P,

zcash_client_sqlite/src/query.rs

@@ -233,7 +233,7 @@ pub fn get_extended_full_viewing_keys<P: consensus::Parameters>(
                 .map_err(SqliteClientError)
             })
         })
-        .map_err(|e| SqliteClientError(Error::Database(e)))?;
+        .map_err(SqliteClientError::from)?;
 
     rows.collect::<Result<Result<_, _>, _>>()?
 }