2 * Copyright (c) 2017 Pantheon Technologies s.r.o. 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
9 package org.opendaylight.mdsal.binding.javav2.dom.codec.impl.value;
11 import com.google.common.annotations.Beta;
12 import com.google.common.base.Preconditions;
13 import com.google.common.base.Throwables;
14 import java.lang.invoke.MethodHandle;
15 import java.lang.invoke.MethodHandles;
16 import java.lang.invoke.MethodHandles.Lookup;
17 import java.lang.invoke.MethodType;
18 import java.lang.reflect.Method;
19 import java.util.concurrent.Callable;
20 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.value.ValueTypeCodec.SchemaUnawareCodec;
23 * Derived YANG types are just immutable value holders for simple value
24 * types, which are same as in NormalizedNode model.
27 public final class EncapsulatedValueCodec extends ReflectionBasedCodec implements SchemaUnawareCodec {
29 private static final Lookup LOOKUP = MethodHandles.publicLookup();
30 private static final MethodType OBJ_METHOD = MethodType.methodType(Object.class, Object.class);
31 private final MethodHandle constructor;
32 private final MethodHandle getter;
33 private final Class<?> valueType;
35 private EncapsulatedValueCodec(final Class<?> typeClz, final MethodHandle constructor, final MethodHandle getter,
36 final Class<?> valueType) {
39 this.constructor = Preconditions.checkNotNull(constructor);
40 this.getter = Preconditions.checkNotNull(getter);
41 this.valueType = Preconditions.checkNotNull(valueType);
44 static Callable<EncapsulatedValueCodec> loader(final Class<?> typeClz) {
46 final Method m = typeClz.getMethod("getValue");
47 final MethodHandle getter = LOOKUP.unreflect(m).asType(OBJ_METHOD);
48 final Class<?> valueType = m.getReturnType();
50 final MethodHandle constructor = LOOKUP.findConstructor(typeClz,
51 MethodType.methodType(void.class, valueType)).asType(OBJ_METHOD);
52 return new EncapsulatedValueCodec(typeClz, constructor, getter, valueType);
57 * Quick check if a value object has a chance to deserialize using {@link #deserialize(Object)}.
59 * @param value Value to be checked
60 * @return True if the value can be encapsulated
62 public boolean canAcceptObject(final Object value) {
63 return valueType.isInstance(value);
67 public Object deserialize(final Object input) {
69 return constructor.invokeExact(input);
70 } catch (final Throwable e) {
71 throw Throwables.propagate(e);
76 public Object serialize(final Object input) {
78 return getter.invokeExact(input);
79 } catch (final Throwable e) {
80 throw Throwables.propagate(e);