+/*
+ * 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.cluster.datastore.node.utils.stream;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.collect.ImmutableMap;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import org.opendaylight.yangtools.yang.common.Empty;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.QNameModule;
+import org.opendaylight.yangtools.yang.common.Revision;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+
+/**
+ * "original" type mapping. Baseline is Lithium but it really was introduced in Oxygen, where {@code type empty} was
+ * remapped from null.
+ *
+ * <p>
+ * {@code uint8}, {@code uint16}, {@code uint32} use java.lang types with widening, hence their value types overlap with
+ * mapping of {@code int16}, {@code int32} and {@code int64}, making that difference indiscernible without YANG schema
+ * knowledge.
+ */
+abstract class AbstractLithiumDataOutput extends AbstractNormalizedNodeDataOutput {
+ private static final ImmutableMap<Class<?>, Byte> KNOWN_TYPES = ImmutableMap.<Class<?>, Byte>builder()
+ .put(String.class, ValueTypes.STRING_TYPE)
+ .put(Byte.class, ValueTypes.BYTE_TYPE)
+ .put(Integer.class, ValueTypes.INT_TYPE)
+ .put(Long.class, ValueTypes.LONG_TYPE)
+ .put(Boolean.class, ValueTypes.BOOL_TYPE)
+ .put(QName.class, ValueTypes.QNAME_TYPE)
+ .put(Short.class, ValueTypes.SHORT_TYPE)
+ .put(BigInteger.class, ValueTypes.BIG_INTEGER_TYPE)
+ .put(BigDecimal.class, ValueTypes.BIG_DECIMAL_TYPE)
+ .put(byte[].class, ValueTypes.BINARY_TYPE)
+ .put(Empty.class, ValueTypes.EMPTY_TYPE)
+ .build();
+
+
+ private final Map<String, Integer> stringCodeMap = new HashMap<>();
+
+ AbstractLithiumDataOutput(final DataOutput output) {
+ super(output);
+ }
+
+ @Override
+ final void writeObject(final DataOutput rawOuput, final Object value) throws IOException {
+ byte type = getSerializableType(value);
+ // Write object type first
+ rawOuput.writeByte(type);
+
+ switch (type) {
+ case ValueTypes.BOOL_TYPE:
+ rawOuput.writeBoolean((Boolean) value);
+ break;
+ case ValueTypes.QNAME_TYPE:
+ writeQName((QName) value);
+ break;
+ case ValueTypes.INT_TYPE:
+ rawOuput.writeInt((Integer) value);
+ break;
+ case ValueTypes.BYTE_TYPE:
+ rawOuput.writeByte((Byte) value);
+ break;
+ case ValueTypes.LONG_TYPE:
+ rawOuput.writeLong((Long) value);
+ break;
+ case ValueTypes.SHORT_TYPE:
+ rawOuput.writeShort((Short) value);
+ break;
+ case ValueTypes.BITS_TYPE:
+ writeObjSet((Set<?>) value);
+ break;
+ case ValueTypes.BINARY_TYPE:
+ byte[] bytes = (byte[]) value;
+ rawOuput.writeInt(bytes.length);
+ rawOuput.write(bytes);
+ break;
+ case ValueTypes.YANG_IDENTIFIER_TYPE:
+ writeYangInstanceIdentifierInternal((YangInstanceIdentifier) value);
+ break;
+ case ValueTypes.EMPTY_TYPE:
+ break;
+ case ValueTypes.STRING_BYTES_TYPE:
+ final byte[] valueBytes = value.toString().getBytes(StandardCharsets.UTF_8);
+ rawOuput.writeInt(valueBytes.length);
+ rawOuput.write(valueBytes);
+ break;
+ default:
+ rawOuput.writeUTF(value.toString());
+ break;
+ }
+ }
+
+ final void defaultWriteQName(final QName qname) throws IOException {
+ writeString(qname.getLocalName());
+ writeModule(qname.getModule());
+ }
+
+ final void defaultWriteModule(final QNameModule module) throws IOException {
+ writeString(module.getNamespace().toString());
+ writeString(module.getRevision().map(Revision::toString).orElse(null));
+ }
+
+ @Override
+ protected final void writeString(final String string) throws IOException {
+ if (string != null) {
+ final Integer value = stringCodeMap.get(string);
+ if (value == null) {
+ stringCodeMap.put(string, stringCodeMap.size());
+ writeByte(TokenTypes.IS_STRING_VALUE);
+ writeUTF(string);
+ } else {
+ writeByte(TokenTypes.IS_CODE_VALUE);
+ writeInt(value);
+ }
+ } else {
+ writeByte(TokenTypes.IS_NULL_VALUE);
+ }
+ }
+
+ abstract void writeModule(QNameModule module) throws IOException;
+
+ @VisibleForTesting
+ static final byte getSerializableType(final Object node) {
+ final Byte type = KNOWN_TYPES.get(requireNonNull(node).getClass());
+ if (type != null) {
+ if (type == ValueTypes.STRING_TYPE
+ && ((String) node).length() >= ValueTypes.STRING_BYTES_LENGTH_THRESHOLD) {
+ return ValueTypes.STRING_BYTES_TYPE;
+ }
+ return type;
+ }
+
+ if (node instanceof Set) {
+ return ValueTypes.BITS_TYPE;
+ }
+
+ if (node instanceof YangInstanceIdentifier) {
+ return ValueTypes.YANG_IDENTIFIER_TYPE;
+ }
+
+ throw new IllegalArgumentException("Unknown value type " + node.getClass().getSimpleName());
+ }
+}