2 * Copyright (c) 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.yangtools.yang.data.impl.codec;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import java.util.Base64;
15 import java.util.Optional;
16 import javax.xml.bind.DatatypeConverter;
17 import org.opendaylight.yangtools.yang.data.api.codec.BinaryCodec;
18 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
19 import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
22 * Do not use this class outside of yangtools, its presence does not fall into the API stability contract.
25 public abstract class BinaryStringCodec extends TypeDefinitionAwareCodec<byte[], BinaryTypeDefinition>
26 implements BinaryCodec<String> {
27 private static final class Restricted extends BinaryStringCodec {
28 private final LengthConstraint lengthConstraint;
30 Restricted(final BinaryTypeDefinition typeDef, final LengthConstraint lengthConstraint) {
32 this.lengthConstraint = requireNonNull(lengthConstraint);
36 void validate(final byte[] value) {
37 // FIXME: throw an exception capturing the constraint violation
38 checkArgument(lengthConstraint.getAllowedRanges().contains(value.length),
39 "Value length %s does not match constraint %s", value.length, lengthConstraint);
43 private static final class Unrestricted extends BinaryStringCodec {
44 Unrestricted(final BinaryTypeDefinition typeDef) {
49 void validate(final byte[] value) {
54 BinaryStringCodec(final BinaryTypeDefinition typeDef) {
55 super(Optional.of(typeDef), byte[].class);
58 public static BinaryStringCodec from(final BinaryTypeDefinition type) {
59 final java.util.Optional<LengthConstraint> optConstraint = type.getLengthConstraint();
60 return optConstraint.isPresent() ? new Restricted(type, optConstraint.get()) : new Unrestricted(type);
64 public String serialize(final byte[] data) {
65 return data == null ? "" : Base64.getEncoder().encodeToString(data);
69 public byte[] deserialize(final String stringRepresentation) {
70 if (stringRepresentation == null) {
74 final byte[] ret = DatatypeConverter.parseBase64Binary(stringRepresentation);
79 abstract void validate(byte[] value);