Bug 1073: Added support to DOMBrokerImpl for Transaction Chaining

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

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMForwardedReadOnlyTransaction.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMForwardedReadOnlyTransaction.java
new file mode 100644 (file)
index 0000000..be55911
--- /dev/null
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMForwardedReadOnlyTransaction.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * 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.broker.impl;
+
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataReadTransaction;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
+import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.util.concurrent.ListenableFuture;
+
+/**
+ * 
+ * Read Only Transaction, which is composed of several
+ * {@link DOMStoreReadTransaction} transactions. Subtransaction is selected by
+ * {@link LogicalDatastoreType} type parameter in
+ * {@link #read(LogicalDatastoreType, InstanceIdentifier)}.
+ */
+class DOMForwardedReadOnlyTransaction extends
+        AbstractDOMForwardedCompositeTransaction<LogicalDatastoreType, DOMStoreReadTransaction> implements
+        DOMDataReadTransaction {
+
+    protected DOMForwardedReadOnlyTransaction(final Object identifier,
+            final ImmutableMap<LogicalDatastoreType, DOMStoreReadTransaction> backingTxs) {
+        super(identifier, backingTxs);
+    }
+
+    @Override
+    public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final LogicalDatastoreType store,
+            final InstanceIdentifier path) {
+        return getSubtransaction(store).read(path);
+    }
+
+}
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