X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-binding-api%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fbinding%2Fapi%2FReadTransaction.java;h=b0c93734e09dba7f964701f4875f10a6f69d297f;hp=cc85d4337b93d5b1a2322af009052b7c26091bd8;hb=11e16facd8ba32e307d634b6da13160d57597cce;hpb=c46e223995956f1f759c551163c212947c1e2fb7

diff --git a/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/ReadTransaction.java b/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/ReadTransaction.java
index cc85d4337b..b0c93734e0 100644
--- a/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/ReadTransaction.java
+++ b/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/ReadTransaction.java
@@ -9,11 +9,12 @@ package org.opendaylight.controller.md.sal.binding.api;
 
 import org.opendaylight.controller.md.sal.common.api.data.AsyncReadTransaction;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 
 import com.google.common.base.Optional;
-import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.CheckedFuture;
 
 /**
  * A transaction that provides read access to a logical data store.
@@ -33,14 +34,17 @@ public interface ReadTransaction extends AsyncReadTransaction<InstanceIdentifier
      * @param path
      *            Path which uniquely identifies subtree which client want to
      *            read
-     * @return Listenable Future which contains read result
+     * @return a CheckFuture containing the result of the read. The Future blocks until the
+     *         commit operation is complete. Once complete:
      *         <ul>
-     *         <li>If data at supplied path exists the
-     *         {@link ListeblaFuture#get()} returns Optional object containing
-     *         data once read is done.
-     *         <li>If data at supplied path does not exists the
-     *         {@link ListenbleFuture#get()} returns {@link Optional#absent()}.
+     *         <li>If the data at the supplied path exists, the Future returns an Optional object
+     *         containing the data.</li>
+     *         <li>If the data at the supplied path does not exist, the Future returns
+     *         Optional#absent().</li>
+     *         <li>If the read of the data fails, the Future will fail with a
+     *         {@link ReadFailedException} or an exception derived from ReadFailedException.</li>
      *         </ul>
      */
-    <T extends DataObject> ListenableFuture<Optional<T>> read(LogicalDatastoreType store, InstanceIdentifier<T> path);
+    <T extends DataObject> CheckedFuture<Optional<T>,ReadFailedException> read(
+            LogicalDatastoreType store, InstanceIdentifier<T> path);
 }