3 files changed, 29 insertions, 5 deletions

diff --git a/ndb/include/ndbapi/NdbIndexScanOperation.hpp b/ndb/include/ndbapi/NdbIndexScanOperation.hpp
index 7cd2daea6a6..e96f46e0f32 100644
--- a/ndb/include/ndbapi/NdbIndexScanOperation.hpp
+++ b/ndb/include/ndbapi/NdbIndexScanOperation.hpp
@@ -45,14 +45,15 @@ public:
   NdbResultSet* readTuples(LockMode = LM_Read,
 			   Uint32 batch = 0, 
 			   Uint32 parallel = 0,
-			   bool order_by = false);
+			   bool order_by = false,
+			   bool keyinfo = false);
   
   inline NdbResultSet* readTuples(int parallell){
-    return readTuples(LM_Read, 0, parallell, false);
+    return readTuples(LM_Read, 0, parallell);
   }
   
   inline NdbResultSet* readTuplesExclusive(int parallell = 0){
-    return readTuples(LM_Exclusive, 0, parallell, false);
+    return readTuples(LM_Exclusive, 0, parallell);
   }
 
   /**
diff --git a/ndb/include/ndbapi/NdbResultSet.hpp b/ndb/include/ndbapi/NdbResultSet.hpp
index dc0288a380c..2a196b1c6ae 100644
--- a/ndb/include/ndbapi/NdbResultSet.hpp
+++ b/ndb/include/ndbapi/NdbResultSet.hpp
@@ -102,6 +102,27 @@ public:
   int restart(bool forceSend = false);
   
   /**
+   * Lock current row by transfering scan operation to a locking transaction. 
+   * Use this function 
+   * when a scan has found a record that you want to lock. 
+   * 1. Start a new transaction.
+   * 2. Call the function takeOverForUpdate using your new transaction 
+   *    as parameter, all the properties of the found record will be copied 
+   *    to the new transaction.
+   * 3. When you execute the new transaction, the lock held by the scan will 
+   *    be transferred to the new transaction(it's taken over).
+   *
+   * @note You must have started the scan with openScanExclusive
+   *       or explictly have requested keyinfo to be able to lock 
+   *       the found tuple.
+   *
+   * @param lockingTrans the locking transaction connection.
+   * @return an NdbOperation or NULL.
+   */
+  NdbOperation* lockTuple();
+  NdbOperation*	lockTuple(NdbConnection* lockingTrans);
+
+  /**
    * Transfer scan operation to an updating transaction. Use this function 
    * when a scan has found a record that you want to update. 
    * 1. Start a new transaction.
diff --git a/ndb/include/ndbapi/NdbScanOperation.hpp b/ndb/include/ndbapi/NdbScanOperation.hpp
index f6e68dd4abe..af656720efb 100644
--- a/ndb/include/ndbapi/NdbScanOperation.hpp
+++ b/ndb/include/ndbapi/NdbScanOperation.hpp
@@ -64,14 +64,16 @@ public:
    * Tuples are not stored in NdbResultSet until execute(NoCommit) 
    * has been executed and nextResult has been called.
    * 
+   * @param keyinfo   Return primary key, needed to be able to call lockTuple
    * @param parallel  Scan parallelism
    * @param batch No of rows to fetch from each fragment at a time
    * @param LockMode  Scan lock handling   
    * @returns NdbResultSet.
-   * @note specifying 0 for batch and parallall means max performance
+   * @note specifying 0 for batch and parallell means max performance
    */ 
   NdbResultSet* readTuples(LockMode = LM_Read, 
-			   Uint32 batch = 0, Uint32 parallel = 0);
+			   Uint32 batch = 0, Uint32 parallel = 0, 
+			   bool keyinfo = false);
   
   inline NdbResultSet* readTuples(int parallell){
     return readTuples(LM_Read, 0, parallell);