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 a6d20c5c34cb06457ccaf8727c40980164fdefe4..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
@@ -7,28 +7,30 @@
  */
 package org.opendaylight.controller.md.sal.binding.impl;
 
+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.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.ListenableFuture;
-
-
-abstract class AbstractForwardedTransaction<T extends AsyncTransaction<InstanceIdentifier, NormalizedNode<?, ?>>>
+abstract class AbstractForwardedTransaction<T extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>>
         implements Delegator<T>, Identifiable<Object> {
 
     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");
     }
@@ -45,7 +47,8 @@ abstract class AbstractForwardedTransaction<T extends AsyncTransaction<InstanceI
     }
 
     @SuppressWarnings("unchecked")
-    protected final <S extends AsyncTransaction<InstanceIdentifier, 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;
     }
@@ -54,8 +57,24 @@ abstract class AbstractForwardedTransaction<T extends AsyncTransaction<InstanceI
         return codec;
     }
 
-    protected final <T extends DataObject> ListenableFuture<Optional<T>> doRead(final DOMDataReadTransaction readTx,
-            final LogicalDatastoreType store, final org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> path) {
-        return Futures.transform(readTx.read(store, codec.toNormalized(path)), codec.deserializeFunction(path));
+    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)),
+                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);
     }
 }