Introduce ReadTransaction.exists()

[controller.git] / opendaylight / md-sal / sal-binding-broker / src / main / java / org / opendaylight / controller / md / sal / binding / impl / AbstractForwardedTransaction.java

diff --git a/opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/AbstractForwardedTransaction.java b/opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/AbstractForwardedTransaction.java
index 3d337d879d88e9d9ff07bb8b18a3b9589b7efcac..24b7ff03cee1557869508a0345e88f066485cd2b 100644 (file)
--- a/opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/AbstractForwardedTransaction.java
+++ b/opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/AbstractForwardedTransaction.java
@@ -11,13 +11,14 @@ 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 com.google.common.util.concurrent.MoreExecutors;
+import org.opendaylight.controller.md.sal.common.api.MappingCheckedFuture;
 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadTransaction;
 import org.opendaylight.yangtools.concepts.Delegator;
 import org.opendaylight.yangtools.concepts.Identifiable;
-import org.opendaylight.yangtools.util.concurrent.MappingCheckedFuture;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
@@ -29,7 +30,7 @@ abstract class AbstractForwardedTransaction<T extends AsyncTransaction<YangInsta
     private final T delegate;
     private final BindingToNormalizedNodeCodec codec;
 
-    public AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
+    AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
         this.delegate = Preconditions.checkNotNull(delegateTx, "Delegate must not be null");
         this.codec = Preconditions.checkNotNull(codec, "Codec must not be null");
     }
@@ -46,7 +47,8 @@ abstract class AbstractForwardedTransaction<T extends AsyncTransaction<YangInsta
     }
 
     @SuppressWarnings("unchecked")
-    protected final <S extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>> S getDelegateChecked(final Class<S> txType) {
+    protected final <S extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>>
+            S getDelegateChecked(final Class<S> txType) {
         Preconditions.checkState(txType.isInstance(delegate));
         return (S) delegate;
     }
@@ -55,14 +57,24 @@ abstract class AbstractForwardedTransaction<T extends AsyncTransaction<YangInsta
         return codec;
     }
 
-    protected final <D extends DataObject> CheckedFuture<Optional<D>,ReadFailedException> doRead(
+    protected final <D extends DataObject> CheckedFuture<Optional<D>, ReadFailedException> doRead(
             final DOMDataReadTransaction readTx, final LogicalDatastoreType store,
             final InstanceIdentifier<D> path) {
         Preconditions.checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
 
         return MappingCheckedFuture.create(
-                    Futures.transform(readTx.read(store, codec.toYangInstanceIdentifierBlocking(path)),
-                                      codec.deserializeFunction(path)),
-                    ReadFailedException.MAPPER);
+            Futures.transform(readTx.read(store, codec.toYangInstanceIdentifierBlocking(path)),
+                result -> Optional.fromJavaUtil(codec.deserializeFunction(path).apply(result.toJavaUtil())),
+                MoreExecutors.directExecutor()),
+            ReadFailedException.MAPPER);
+    }
+
+    protected final CheckedFuture<Boolean, ReadFailedException> doExists(
+            final DOMDataReadTransaction readTx, final LogicalDatastoreType store,
+            final InstanceIdentifier<?> path) {
+        Preconditions.checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
+
+        return MappingCheckedFuture.create(readTx.exists(store, codec.toYangInstanceIdentifierBlocking(path)),
+            ReadFailedException.MAPPER);
     }
 }