2 * Copyright (c) 2014 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.mdsal.binding.dom.codec.impl;
10 import com.google.common.cache.Cache;
11 import com.google.common.cache.CacheBuilder;
12 import java.util.concurrent.Callable;
13 import java.util.concurrent.ExecutionException;
14 import org.opendaylight.yangtools.concepts.Codec;
15 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
16 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
17 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
18 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
19 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
22 * Value codec, which serializes / deserializes values from DOM simple values.
24 abstract class ValueTypeCodec implements Codec<Object, Object> {
26 private static final Cache<Class<?>, SchemaUnawareCodec> STATIC_CODECS = CacheBuilder.newBuilder().weakKeys()
30 * Marker interface for codecs, which functionality will not be affected by schema change (introduction of new YANG
31 * modules) they may have one static instance generated when first time needed.
33 interface SchemaUnawareCodec extends Codec<Object,Object> {
38 * No-op Codec, Java YANG Binding uses same types as NormalizedNode model for base YANG types, representing numbers,
41 public static final SchemaUnawareCodec NOOP_CODEC = new SchemaUnawareCodec() {
44 public Object serialize(final Object input) {
49 public Object deserialize(final Object input) {
54 public static final SchemaUnawareCodec EMPTY_CODEC = new SchemaUnawareCodec() {
57 public Object serialize(final Object input) {
58 // Empty type has null value in NormalizedNode and Composite Node representation
63 public Object deserialize(final Object input) {
64 /* Empty type has boolean.TRUE representation in Binding-aware world otherwise it is null / false.
65 * So when codec is triggered, empty leaf is present, that means we are safe to return true.
71 private static final Callable<? extends SchemaUnawareCodec> EMPTY_LOADER = () -> EMPTY_CODEC;
74 public static SchemaUnawareCodec getCodecFor(final Class<?> typeClz, final TypeDefinition<?> def) {
75 if (BindingReflections.isBindingClass(typeClz)) {
76 return getCachedSchemaUnawareCodec(typeClz, getCodecLoader(typeClz, def));
78 return def instanceof EmptyTypeDefinition ? EMPTY_CODEC : NOOP_CODEC;
81 private static SchemaUnawareCodec getCachedSchemaUnawareCodec(final Class<?> typeClz,
82 final Callable<? extends SchemaUnawareCodec> loader) {
84 return STATIC_CODECS.get(typeClz, loader);
85 } catch (ExecutionException e) {
86 throw new IllegalStateException(e);
90 private static Callable<? extends SchemaUnawareCodec> getCodecLoader(final Class<?> typeClz,
91 final TypeDefinition<?> def) {
93 TypeDefinition<?> rootType = def;
94 while (rootType.getBaseType() != null) {
95 rootType = rootType.getBaseType();
97 if (rootType instanceof EnumTypeDefinition) {
98 return EnumerationCodec.loader(typeClz, (EnumTypeDefinition) rootType);
99 } else if (rootType instanceof BitsTypeDefinition) {
100 return BitsCodec.loader(typeClz, (BitsTypeDefinition) rootType);
101 } else if (rootType instanceof EmptyTypeDefinition) {
104 return EncapsulatedValueCodec.loader(typeClz);
107 @SuppressWarnings("rawtypes")
108 static ValueTypeCodec encapsulatedValueCodecFor(final Class<?> typeClz, final Codec delegate) {
109 SchemaUnawareCodec extractor = getCachedSchemaUnawareCodec(typeClz, EncapsulatedValueCodec.loader(typeClz));
110 return new CompositeValueCodec(extractor, delegate);