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.mdsal.binding.dom.codec.impl;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.base.Throwables;
13 import com.google.common.cache.CacheBuilder;
14 import com.google.common.cache.CacheLoader;
15 import com.google.common.cache.LoadingCache;
16 import java.lang.reflect.Field;
17 import java.lang.reflect.Modifier;
18 import java.util.concurrent.ExecutionException;
19 import org.eclipse.jdt.annotation.NonNull;
20 import org.opendaylight.mdsal.binding.dom.codec.api.BindingIdentityCodec;
21 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
22 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
23 import org.opendaylight.yangtools.yang.binding.BaseIdentity;
24 import org.opendaylight.yangtools.yang.binding.contract.Naming;
25 import org.opendaylight.yangtools.yang.common.QName;
27 final class IdentityCodec extends AbstractValueCodec<QName, BaseIdentity> implements BindingIdentityCodec {
28 private final LoadingCache<@NonNull QName, @NonNull BaseIdentity> values = CacheBuilder.newBuilder()
29 .build(new CacheLoader<>() {
31 public BaseIdentity load(final QName key) {
32 final var clazz = context.getIdentityClass(key);
35 field = clazz.getField(Naming.VALUE_STATIC_FIELD_NAME);
36 } catch (NoSuchFieldException e) {
37 throw new LinkageError(clazz + " does not define required field " + Naming.VALUE_STATIC_FIELD_NAME,
40 if (!Modifier.isStatic(field.getModifiers())) {
41 throw new LinkageError(field + " is not static");
46 value = clazz.cast(field.get(null));
47 } catch (IllegalAccessException e) {
48 throw new LinkageError(field + " is not accesssible", e);
51 throw new LinkageError(field + " is null");
54 return clazz.cast(value);
55 } catch (ClassCastException e) {
56 throw new LinkageError(field + " value " + value + " has illegal type", e);
61 private final BindingRuntimeContext context;
63 IdentityCodec(final BindingRuntimeContext context) {
64 this.context = requireNonNull(context);
68 protected BaseIdentity deserializeImpl(final QName input) {
69 return toBinding(input);
73 protected QName serializeImpl(final BaseIdentity input) {
74 return fromBinding(input);
78 @SuppressWarnings("unchecked")
79 public <T extends BaseIdentity> T toBinding(final QName qname) {
81 return (T) values.get(requireNonNull(qname));
82 } catch (ExecutionException e) {
83 Throwables.throwIfUnchecked(e.getCause());
84 throw new IllegalStateException("Unexpected error translating " + qname, e);
89 public QName fromBinding(final BaseIdentity bindingValue) {
90 return BindingReflections.getQName(bindingValue);