nostrdb-rs

commit 8de35b0fcd3e3a2056b82f710939d6128f3a46be
parent 1a09eed077919f3cdef6d1faef60f0f88678c912
Author: William Casarin <jb55@jb55.com>
Date:   Wed,  7 Feb 2024 17:31:26 -0800

add get_note_by_key

Signed-off-by: William Casarin <jb55@jb55.com>

Diffstat:
M
src/filter.rs
 | 
1
-
M
src/lib.rs
 | 
2
+-
M
src/ndb.rs
 | 
36
+++++++++++++++++++++++++++++++++---
M
src/note.rs
 | 
21
+++++++++++++++++----
M
src/query.rs
 | 
8
++++----

5 files changed, 55 insertions(+), 13 deletions(-)
diff --git a/src/filter.rs b/src/filter.rs
@@ -3,7 +3,6 @@ use crate::Note;
 use std::ffi::CString;
 use std::os::raw::c_char;
 use std::ptr::null_mut;
-use tracing::debug;
 
 #[derive(Debug, Clone)]
 pub struct Filter {
diff --git a/src/lib.rs b/src/lib.rs
@@ -25,7 +25,7 @@ pub use config::Config;
 pub use error::Error;
 pub use filter::Filter;
 pub use ndb::Ndb;
-pub use note::Note;
+pub use note::{Note, NoteKey};
 pub use profile::ProfileRecord;
 pub use query::QueryResult;
 pub use result::Result;
diff --git a/src/ndb.rs b/src/ndb.rs
@@ -3,7 +3,7 @@ use std::ffi::CString;
 use std::ptr;
 
 use crate::{
-    bindings, Blocks, Config, Error, Filter, Note, ProfileRecord, QueryResult, Result,
+    bindings, Blocks, Config, Error, Filter, Note, NoteKey, ProfileRecord, QueryResult, Result,
     Subscription, Transaction,
 };
 use std::fs;
@@ -235,6 +235,31 @@ impl Ndb {
         Ok(Blocks::new_transactional(blocks_ptr, txn))
     }
 
+    pub fn get_note_by_key<'a>(
+        &self,
+        transaction: &'a Transaction,
+        note_key: NoteKey,
+    ) -> Result<Note<'a>> {
+        let mut len: usize = 0;
+
+        let note_ptr = unsafe {
+            bindings::ndb_get_note_by_key(transaction.as_mut_ptr(), note_key.as_u64(), &mut len)
+        };
+
+        if note_ptr.is_null() {
+            // Handle null pointer (e.g., note not found or error occurred)
+            return Err(Error::NotFound);
+        }
+
+        // Convert the raw pointer to a Note instance
+        Ok(Note::new_transactional(
+            note_ptr,
+            len,
+            note_key,
+            transaction,
+        ))
+    }
+
     /// Get a note from the database. Takes a [Transaction] and a 32-byte [Note] Id
     pub fn get_note_by_id<'a>(
         &self,
@@ -246,7 +271,7 @@ impl Ndb {
 
         let note_ptr = unsafe {
             bindings::ndb_get_note_by_id(
-                transaction.as_ptr() as *mut bindings::ndb_txn,
+                transaction.as_mut_ptr(),
                 id.as_ptr(),
                 &mut len,
                 &mut primkey,
@@ -259,7 +284,12 @@ impl Ndb {
         }
 
         // Convert the raw pointer to a Note instance
-        Ok(Note::new_transactional(note_ptr, len, primkey, transaction))
+        Ok(Note::new_transactional(
+            note_ptr,
+            len,
+            NoteKey::new(primkey),
+            transaction,
+        ))
     }
 
     /// Get the underlying pointer to the context in C
diff --git a/src/note.rs b/src/note.rs
@@ -1,6 +1,19 @@
 use crate::bindings;
 use crate::transaction::Transaction;
 
+#[derive(Debug, Eq, Ord, PartialEq, PartialOrd)]
+pub struct NoteKey(u64);
+
+impl NoteKey {
+    pub fn as_u64(&self) -> u64 {
+        self.0
+    }
+
+    pub fn new(key: u64) -> Self {
+        NoteKey(key)
+    }
+}
+
 #[derive(Debug)]
 pub enum Note<'a> {
     /// A note in-memory outside of nostrdb. This note is a pointer to a note in
@@ -19,7 +32,7 @@ pub enum Note<'a> {
     Transactional {
         ptr: *mut bindings::ndb_note,
         size: usize,
-        key: u64,
+        key: NoteKey,
         transaction: &'a Transaction,
     },
 }
@@ -42,7 +55,7 @@ impl<'a> Note<'a> {
     pub(crate) fn new_transactional(
         ptr: *mut bindings::ndb_note,
         size: usize,
-        key: u64,
+        key: NoteKey,
         transaction: &'a Transaction,
     ) -> Note<'a> {
         Note::Transactional {
@@ -53,9 +66,9 @@ impl<'a> Note<'a> {
         }
     }
 
-    pub fn key(&self) -> Option<u64> {
+    pub fn key(&self) -> Option<NoteKey> {
         match self {
-            Note::Transactional { key, .. } => Some(*key),
+            Note::Transactional { key, .. } => Some(NoteKey::new(key.as_u64())),
             _ => None,
         }
     }
diff --git a/src/query.rs b/src/query.rs
@@ -1,10 +1,10 @@
-use crate::{bindings, Note, Transaction};
+use crate::{bindings, Note, NoteKey, Transaction};
 
 #[derive(Debug)]
 pub struct QueryResult<'a> {
     pub note: Note<'a>,
     pub note_size: u64,
-    pub note_key: u64,
+    pub note_key: NoteKey,
 }
 
 impl<'a> QueryResult<'a> {
@@ -13,11 +13,11 @@ impl<'a> QueryResult<'a> {
             note: Note::new_transactional(
                 result.note,
                 result.note_size as usize,
-                result.note_id,
+                NoteKey::new(result.note_id),
                 txn,
             ),
             note_size: result.note_size,
-            note_key: result.note_id,
+            note_key: NoteKey::new(result.note_id),
         }
     }
 }