Publish SnapshotBacked transactions

[controller.git] / opendaylight / md-sal / sal-dom-spi / src / main / java / org / opendaylight / controller / sal / core / spi / data / SnapshotBackedReadTransaction.java

diff --git a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadTransaction.java b/opendaylight/md-sal/sal-dom-spi/src/main/java/org/opendaylight/controller/sal/core/spi/data/SnapshotBackedReadTransaction.java
similarity index 80%
rename from opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadTransaction.java
rename to opendaylight/md-sal/sal-dom-spi/src/main/java/org/opendaylight/controller/sal/core/spi/data/SnapshotBackedReadTransaction.java
index 8b18be432a4b42aa422526ca432596ecec68911c..8e5957c71a3f76e6f7a62ac146cce8bfbe4e6159 100644 (file)
--- a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedReadTransaction.java
+++ b/opendaylight/md-sal/sal-dom-spi/src/main/java/org/opendaylight/controller/sal/core/spi/data/SnapshotBackedReadTransaction.java
@@ -5,16 +5,15 @@
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
  */
-package org.opendaylight.controller.md.sal.dom.store.impl;
+package org.opendaylight.controller.sal.core.spi.data;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import com.google.common.annotations.Beta;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 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.AbstractDOMStoreTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
 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;
@@ -28,14 +27,21 @@ import org.slf4j.LoggerFactory;
  * Implementation of read-only transaction backed by {@link DataTreeSnapshot}
  * which delegates most of its calls to similar methods provided by underlying snapshot.
  *
+ * <T> identifier type
  */
-final class SnapshotBackedReadTransaction extends AbstractDOMStoreTransaction<Object>
-                                          implements DOMStoreReadTransaction {
-
+@Beta
+public final class SnapshotBackedReadTransaction<T> extends AbstractDOMStoreTransaction<T> implements DOMStoreReadTransaction {
     private static final Logger LOG = LoggerFactory.getLogger(SnapshotBackedReadTransaction.class);
     private volatile DataTreeSnapshot stableSnapshot;
 
-    public SnapshotBackedReadTransaction(final Object identifier, final boolean debug, final DataTreeSnapshot snapshot) {
+    /**
+     * Creates a new read-only transaction.
+     *
+     * @param identifier Transaction Identifier
+     * @param debug Enable transaction debugging
+     * @param snapshot Snapshot which will be modified.
+     */
+    SnapshotBackedReadTransaction(final T identifier, final boolean debug, final DataTreeSnapshot snapshot) {
         super(identifier, debug);
         this.stableSnapshot = Preconditions.checkNotNull(snapshot);
         LOG.debug("ReadOnly Tx: {} allocated with snapshot {}", identifier, snapshot);
@@ -71,8 +77,7 @@ final class SnapshotBackedReadTransaction extends AbstractDOMStoreTransaction<Ob
         checkNotNull(path, "Path must not be null.");
 
         try {
-            return Futures.immediateCheckedFuture(
-                read(path).checkedGet().isPresent());
+            return Futures.immediateCheckedFuture(read(path).checkedGet().isPresent());
         } catch (ReadFailedException e) {
             return Futures.immediateFailedCheckedFuture(e);
         }