Only renew txn if txn has changed.

Philip Stutz · Philip Stutz · commit 50f9fdad431a · 2016-12-30T23:44:17.000+01:00
diff --git a/src/main/java/org/lmdbjava/Cursor.java b/src/main/java/org/lmdbjava/Cursor.java
@@ -279,8 +279,10 @@ public void renew(final Txn<T> newTxn) {
       newTxn.checkReadOnly();
       newTxn.checkReady();
     }
-    checkRc(LIB.mdb_cursor_renew(newTxn.pointer(), ptrCursor));
-    this.txn = newTxn;
+    if (this.txn != newTxn) {
+      checkRc(LIB.mdb_cursor_renew(newTxn.pointer(), ptrCursor));
+      this.txn = newTxn;
+    }
   }
 
   /**

Original file line number	Diff line number	Diff line change
`@@ -279,8 +279,10 @@ public void renew(final Txn<T> newTxn) {`
`279`	`279`	`newTxn.checkReadOnly();`
`280`	`280`	`newTxn.checkReady();`
`281`	`281`	`}`
`282`		`- checkRc(LIB.mdb_cursor_renew(newTxn.pointer(), ptrCursor));`
`283`		`- this.txn = newTxn;`
	`282`	`+ if (this.txn != newTxn) {`
	`283`	`+ checkRc(LIB.mdb_cursor_renew(newTxn.pointer(), ptrCursor));`
	`284`	`+ this.txn = newTxn;`
	`285`	`+ }`
`284`	`286`	`}`
`285`	`287`
`286`	`288`	`/**`