X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-inmemory-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fdom%2Fstore%2Fimpl%2FSnapshotBackedReadWriteTransaction.java;h=30fa6da58bf99bd47f92758500adb8c317733d57;hb=ccfab2e4f9599c13c58d9fa62a3275b17d3d6caa;hp=5c5e9c6b6d82f4263959c6f8e137cc0bf1af25ad;hpb=10948fbda7e6d997525cce5b4929a1e426045c52;p=controller.git

diff --git a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadWriteTransaction.java b/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadWriteTransaction.java
index 5c5e9c6b6d..30fa6da58b 100644
--- a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadWriteTransaction.java
+++ b/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadWriteTransaction.java
@@ -8,28 +8,23 @@
 package org.opendaylight.controller.md.sal.dom.store.impl;
 
 import static com.google.common.base.Preconditions.checkNotNull;
-
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Optional;
-import com.google.common.util.concurrent.CheckedFuture;
-import com.google.common.util.concurrent.Futures;
-
 /**
  * Implementation of Read-Write transaction which is backed by {@link DataTreeSnapshot}
  * and executed according to {@link TransactionReadyPrototype}.
  *
  */
-class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction
-                                         implements DOMStoreReadWriteTransaction {
-
+final class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction implements DOMStoreReadWriteTransaction {
     private static final Logger LOG = LoggerFactory.getLogger(SnapshotBackedReadWriteTransaction.class);
 
     /**
@@ -39,9 +34,9 @@ class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction
      * @param snapshot Snapshot which will be modified.
      * @param readyImpl Implementation of ready method.
      */
-    protected SnapshotBackedReadWriteTransaction(final Object identifier, final DataTreeSnapshot snapshot,
-            final TransactionReadyPrototype store) {
-        super(identifier, snapshot, store);
+    protected SnapshotBackedReadWriteTransaction(final Object identifier, final boolean debug,
+            final DataTreeSnapshot snapshot, final TransactionReadyPrototype store) {
+        super(identifier, debug, snapshot, store);
     }
 
     @Override
@@ -49,16 +44,28 @@ class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction
         LOG.debug("Tx: {} Read: {}", getIdentifier(), path);
         checkNotNull(path, "Path must not be null.");
 
-        DataTreeModification dataView = getMutatedView();
-        if(dataView == null) {
+        final Optional<NormalizedNode<?, ?>> result;
+        try {
+            result = readSnapshotNode(path);
+        } catch (Exception e) {
+            LOG.error("Tx: {} Failed Read of {}", getIdentifier(), path, e);
+            return Futures.immediateFailedCheckedFuture(new ReadFailedException("Read failed", e));
+        }
+
+        if (result == null) {
             return Futures.immediateFailedCheckedFuture(new ReadFailedException("Transaction is closed"));
+        } else {
+            return Futures.immediateCheckedFuture(result);
         }
+    }
 
+    @Override
+    public CheckedFuture<Boolean, ReadFailedException> exists(final YangInstanceIdentifier path) {
         try {
-            return Futures.immediateCheckedFuture(dataView.readNode(path));
-        } catch (Exception e) {
-            LOG.error("Tx: {} Failed Read of {}", getIdentifier(), path, e);
-            return Futures.immediateFailedCheckedFuture(new ReadFailedException("Read failed",e));
+            return Futures.immediateCheckedFuture(
+                read(path).checkedGet().isPresent());
+        } catch (ReadFailedException e) {
+            return Futures.immediateFailedCheckedFuture(e);
         }
     }
-}
\ No newline at end of file
+}