Add into_owned for obtaining a 'static transaction

src/lib.rs

@@ -1,4 +1,5 @@
 use persy::{Config, IndexId, IndexType, Persy, PersyError, SegmentId, TxIndexIter, ValueMode, PE};
+use std::borrow::Cow;
 use std::marker::PhantomData;
 use std::ops::RangeBounds;
 use std::path::Path;
@@ -30,7 +31,7 @@ pub struct Tree<K, V> {
 }
 
 pub struct Transaction<'a, K, V> {
-    tree: &'a Tree<K, V>,
+    tree: Cow<'a, Tree<K, V>>,
     tx: persy::Transaction,
 }
 
@@ -91,7 +92,10 @@ impl<K, V> Tree<K, V> {
     pub fn transaction(&self) -> Result<Transaction<'_, K, V>, Error> {
         let tx = self.persy.begin()?;
 
-        Ok(Transaction { tree: self, tx })
+        Ok(Transaction {
+            tree: Cow::Borrowed(self),
+            tx,
+        })
     }
 }
 
@@ -127,6 +131,13 @@ where
         self.tx.rollback()?;
         Ok(())
     }
+
+    pub fn into_owned(self) -> Transaction<'static, K, V> {
+        Transaction {
+            tree: Cow::Owned(self.tree.into_owned()),
+            tx: self.tx,
+        }
+    }
 }
 
 impl<'a, K, V> Iter<'a, K, V>