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.naming.BindingMapping;
23 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
24 import org.opendaylight.yangtools.concepts.AbstractIllegalArgumentCodec;
25 import org.opendaylight.yangtools.yang.binding.BaseIdentity;
26 import org.opendaylight.yangtools.yang.common.QName;
28 final class IdentityCodec extends AbstractIllegalArgumentCodec<QName, BaseIdentity> implements BindingIdentityCodec {
29 private final LoadingCache<@NonNull QName, @NonNull BaseIdentity> values = CacheBuilder.newBuilder()
30 .build(new CacheLoader<>() {
32 public BaseIdentity load(final QName key) {
33 final var clazz = context.getIdentityClass(key);
36 field = clazz.getField(BindingMapping.VALUE_STATIC_FIELD_NAME);
37 } catch (NoSuchFieldException e) {
38 throw new LinkageError(clazz + " does not define required field "
39 + BindingMapping.VALUE_STATIC_FIELD_NAME, e);
41 if (!Modifier.isStatic(field.getModifiers())) {
42 throw new LinkageError(field + " is not static");
47 value = clazz.cast(field.get(null));
48 } catch (IllegalAccessException e) {
49 throw new LinkageError(field + " is not accesssible", e);
52 throw new LinkageError(field + " is null");
55 return clazz.cast(value);
56 } catch (ClassCastException e) {
57 throw new LinkageError(field + " value " + value + " has illegal type", e);
62 private final BindingRuntimeContext context;
64 IdentityCodec(final BindingRuntimeContext context) {
65 this.context = requireNonNull(context);
69 protected BaseIdentity deserializeImpl(final QName input) {
70 return toBinding(input);
74 protected QName serializeImpl(final BaseIdentity input) {
75 return fromBinding(input);
79 @SuppressWarnings("unchecked")
80 public <T extends BaseIdentity> T toBinding(final QName qname) {
82 return (T) values.get(requireNonNull(qname));
83 } catch (ExecutionException e) {
84 Throwables.throwIfUnchecked(e.getCause());
85 throw new IllegalStateException("Unexpected error translating " + qname, e);
90 public QName fromBinding(final BaseIdentity bindingValue) {
91 return BindingReflections.getQName(bindingValue.implementedInterface());