From 7b11744dea26fe1d6d051fd68e7701a8b54f9d84 Mon Sep 17 00:00:00 2001
From: Matthew Swift <matthew.swift@forgerock.com>
Date: Wed, 17 Dec 2014 10:53:46 +0000
Subject: [PATCH] OPENDJ-1602 (CR-5566) New pluggable storage based backend

---
 opendj3-server-dev/src/server/org/opends/server/backends/persistit/PersistItStorage.java |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/opendj3-server-dev/src/server/org/opends/server/backends/persistit/PersistItStorage.java b/opendj3-server-dev/src/server/org/opends/server/backends/persistit/PersistItStorage.java
index 6e4377a..8c680b1 100644
--- a/opendj3-server-dev/src/server/org/opends/server/backends/persistit/PersistItStorage.java
+++ b/opendj3-server-dev/src/server/org/opends/server/backends/persistit/PersistItStorage.java
@@ -43,6 +43,7 @@
 import org.opends.server.backends.pluggable.spi.Storage;
 import org.opends.server.backends.pluggable.spi.StorageRuntimeException;
 import org.opends.server.backends.pluggable.spi.TreeName;
+import org.opends.server.backends.pluggable.spi.UpdateFunction;
 import org.opends.server.backends.pluggable.spi.WriteOperation;
 import org.opends.server.backends.pluggable.spi.WriteableStorage;
 import org.opends.server.types.DN;
@@ -171,6 +172,27 @@
                 throw new StorageRuntimeException(e);
             }
         }
+        
+        @Override
+        public void update(TreeName treeName, ByteSequence key, UpdateFunction f)
+        {
+          try
+          {
+            final Exchange ex = getExchange(treeName);
+            ex.getKey().clear().append(key.toByteArray());
+            ex.fetch();
+            final Value value = ex.getValue();
+            final ByteSequence oldValue = value.isDefined() ? ByteString.wrap(value
+                .getByteArray()) : null;
+            final ByteSequence newValue = f.computeNewValue(oldValue);
+            ex.getValue().clear().putByteArray(newValue.toByteArray());
+            ex.store();
+          }
+          catch (Exception e)
+          {
+            throw new StorageRuntimeException(e);
+          }
+        }
 
         @Override
         public boolean delete(TreeName treeName, ByteSequence key) {

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