X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-dom-broker%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fdom%2Fstore%2Fimpl%2Ftree%2Fdata%2FInMemoryDataTreeModification.java;h=39ff4f0aa03f9b0ad1d3ccdce080b4cf7c7989a2;hp=c05ed4b442d0fa964fa94d88fb9526a5c88673c6;hb=2c4a9be1a89caa93f4f2697401771dcb0fa67c5a;hpb=f2b0b8646e5e8060dbb1a8278ddaf0f4b2a422c0

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/InMemoryDataTreeModification.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/InMemoryDataTreeModification.java
index c05ed4b442..39ff4f0aa0 100644
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/InMemoryDataTreeModification.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/InMemoryDataTreeModification.java
@@ -12,6 +12,7 @@ import java.util.Map.Entry;
 import javax.annotation.concurrent.GuardedBy;
 
 import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTreeModification;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.ModificationType;
 import org.opendaylight.controller.md.sal.dom.store.impl.tree.TreeNodeUtils;
 import org.opendaylight.controller.md.sal.dom.store.impl.tree.spi.TreeNode;
 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
@@ -131,7 +132,7 @@ final class InMemoryDataTreeModification implements DataTreeModification {
     }
 
     @Override
-    public synchronized void seal() {
+    public synchronized void ready() {
         Preconditions.checkState(!sealed, "Attempted to seal an already-sealed Data Tree.");
         sealed = true;
         rootNode.seal();
@@ -151,7 +152,27 @@ final class InMemoryDataTreeModification implements DataTreeModification {
     public synchronized DataTreeModification newModification() {
         Preconditions.checkState(sealed, "Attempted to chain on an unsealed modification");
 
-        // FIXME: transaction chaining
-        throw new UnsupportedOperationException("Implement this as part of transaction chaining");
+        if(rootNode.getType() == ModificationType.UNMODIFIED) {
+            return snapshot.newModification();
+        }
+
+        /*
+         *  FIXME: Add advanced transaction chaining for modification of not rebased
+         *  modification.
+         *
+         *  Current computation of tempRoot may yeld incorrect subtree versions
+         *  if there are multiple concurrent transactions, which may break
+         *  versioning preconditions for modification of previously occured write,
+         *  directly nested under parent node, since node version is derived from
+         *  subtree version.
+         *
+         *  For deeper nodes subtree version is derived from their respective metadata
+         *  nodes, so this incorrect root subtree version is not affecting us.
+         */
+        TreeNode originalSnapshotRoot = snapshot.getRootNode();
+        Optional<TreeNode> tempRoot = strategyTree.apply(rootNode, Optional.of(originalSnapshotRoot), originalSnapshotRoot.getSubtreeVersion().next());
+
+        InMemoryDataTreeSnapshot tempTree = new InMemoryDataTreeSnapshot(snapshot.getSchemaContext(), tempRoot.get(), strategyTree);
+        return tempTree.newModification();
     }
 }