2 * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.cluster.datastore.node.utils.stream;
10 import com.google.common.annotations.Beta;
11 import java.io.DataInput;
12 import java.io.IOException;
13 import java.util.Optional;
14 import org.eclipse.jdt.annotation.NonNull;
15 import org.opendaylight.yangtools.yang.common.QName;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
19 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
22 * Interface for reading {@link NormalizedNode}s, {@link YangInstanceIdentifier}s, {@link PathArgument}s
23 * and {@link SchemaPath}s.
26 public interface NormalizedNodeDataInput extends DataInput {
28 * Read a normalized node from the reader.
30 * @return Next node from the stream, or null if end of stream has been reached.
31 * @throws IOException if an error occurs
32 * @throws IllegalStateException if the dictionary has been detached
34 NormalizedNode<?, ?> readNormalizedNode() throws IOException;
36 YangInstanceIdentifier readYangInstanceIdentifier() throws IOException;
38 @NonNull QName readQName() throws IOException;
40 PathArgument readPathArgument() throws IOException;
42 SchemaPath readSchemaPath() throws IOException;
45 * Return the version of the underlying input stream.
47 * @return Stream version
48 * @throws IOException if the version cannot be ascertained
50 NormalizedNodeStreamVersion getVersion() throws IOException;
52 default Optional<NormalizedNode<?, ?>> readOptionalNormalizedNode() throws IOException {
53 return readBoolean() ? Optional.of(readNormalizedNode()) : Optional.empty();